Raspberry Pi 4 Thermals Raspberry Pi 4 thermal benchmarks by Michael Larabel for a future article No Heatsink: Processor: ARMv7 Cortex-A72 @ 1.50GHz (4 Cores), Motherboard: BCM2835 Raspberry Pi 4 Model B Rev 1.1, Memory: 2048MB, Disk: 16GB SC16G, Graphics: V3D 4.2 2GB, Monitor: DELL P2415Q OS: Raspbian 10, Kernel: 4.19.50-v7l+ (armv7l), Desktop: LXDE 0.10.0, Display Server: X Server 1.20.4, Display Driver: modesetting 1.20.4, OpenGL: 2.1 Mesa 19.1.0-devel, Compiler: GCC 8.3.0, File-System: ext4, Screen Resolution: 1024x768 Basic Heatsink: Processor: ARMv7 Cortex-A72 @ 1.50GHz (4 Cores), Motherboard: BCM2835 Raspberry Pi 4 Model B Rev 1.1, Memory: 2048MB, Disk: 16GB SC16G, Graphics: V3D 4.2 2GB, Monitor: DELL P2415Q OS: Raspbian 10, Kernel: 4.19.50-v7l+ (armv7l), Desktop: LXDE 0.10.0, Display Server: X Server 1.20.4, Display Driver: modesetting 1.20.4, OpenGL: 2.1 Mesa 19.1.0-devel, Compiler: GCC 8.3.0, File-System: ext4, Screen Resolution: 1024x768 Fan SHIM: Processor: ARMv7 Cortex-A72 @ 1.50GHz (4 Cores), Motherboard: BCM2835 Raspberry Pi 4 Model B Rev 1.1, Memory: 2048MB, Disk: 16GB SC16G, Graphics: V3D 4.2 2GB, Monitor: DELL P2415Q OS: Raspbian 10, Kernel: 4.19.50-v7l+ (armv7l), Desktop: LXDE 0.10.0, Display Server: X Server 1.20.4, Display Driver: modesetting 1.20.4, OpenGL: 2.1 Mesa 19.1.0-devel, Compiler: GCC 8.3.0, File-System: ext4, Screen Resolution: 3840x2160 FLIRC: Processor: ARMv7 Cortex-A72 @ 1.50GHz (4 Cores), Motherboard: BCM2835 Raspberry Pi 4 Model B Rev 1.1, Memory: 2048MB, Disk: 16GB SC16G, Graphics: V3D 4.2 2GB, Monitor: DELL P2415Q OS: Raspbian 10, Kernel: 4.19.50-v7l+ (armv7l), Desktop: LXDE 0.10.0, Display Server: X Server 1.20.4, Display Driver: modesetting 1.20.4, OpenGL: 2.1 Mesa 19.1.0-devel, Compiler: GCC 8.3.0, File-System: ext4, Screen Resolution: 3840x2160 John The Ripper 1.9.0-jumbo-1 Test: Blowfish Real C/S > Higher Is Better No Heatsink .... 524 |=================================== Basic Heatsink . 578 |====================================== Fan SHIM ....... 861 |========================================================= FLIRC .......... 864 |========================================================= John The Ripper 1.9.0-jumbo-1 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 61 AVG: 84 MAX: 87 Basic Heatsink . MIN: 62 AVG: 83 MAX: 87 Fan SHIM ....... MIN: 39 AVG: 52 MAX: 57 FLIRC .......... MIN: 34 AVG: 44 MAX: 49 libjpeg-turbo tjbench 2.0.2 Test: Decompression Throughput Megapixels/sec > Higher Is Better No Heatsink .... 49.49 |======================================================= Basic Heatsink . 49.39 |======================================================= Fan SHIM ....... 48.71 |====================================================== FLIRC .......... 49.14 |======================================================= libjpeg-turbo tjbench 2.0.2 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 76 AVG: 79 MAX: 81 Basic Heatsink . MIN: 76 AVG: 78 MAX: 79 Fan SHIM ....... MIN: 43 AVG: 45 MAX: 48 FLIRC .......... MIN: 41 AVG: 42 MAX: 44 x264 2018-09-25 H.264 Video Encoding Frames Per Second > Higher Is Better No Heatsink .... 2.99 |=================================== Basic Heatsink . 3.06 |==================================== Fan SHIM ....... 4.82 |======================================================== FLIRC .......... 4.75 |======================================================= x264 2018-09-25 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 73 AVG: 85 MAX: 87 Basic Heatsink . MIN: 72 AVG: 85 MAX: 87 Fan SHIM ....... MIN: 41 AVG: 55 MAX: 58 FLIRC .......... MIN: 41 AVG: 54 MAX: 61 GIMP 2.10.8 Test: unsharp-mask Seconds < Lower Is Better No Heatsink .... 4.34 |========================= Basic Heatsink . 7.98 |============================================= Fan SHIM ....... 9.84 |======================================================== FLIRC .......... 6.97 |======================================== GIMP System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 71 AVG: 75 MAX: 79 Basic Heatsink . MIN: 71 AVG: 74 MAX: 79 Fan SHIM ....... MIN: 41 AVG: 44 MAX: 48 FLIRC .......... MIN: 52 AVG: 54 MAX: 56 GIMP 2.10.8 Test: resize Seconds < Lower Is Better No Heatsink .... 7.49 |======================================================== Basic Heatsink . 6.46 |================================================ Fan SHIM ....... 4.73 |=================================== FLIRC .......... 5.46 |========================================= GIMP System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 68.7 AVG: 71.8 MAX: 74.5 Basic Heatsink . MIN: 68.7 AVG: 71.8 MAX: 74.5 Fan SHIM ....... MIN: 40.9 AVG: 43.9 MAX: 46.3 FLIRC .......... MIN: 51.6 AVG: 53.8 MAX: 56.0 GIMP 2.10.8 Test: rotate Seconds < Lower Is Better No Heatsink .... 5.17 |==================================================== Basic Heatsink . 5.61 |======================================================== Fan SHIM ....... 4.19 |========================================== FLIRC .......... 5.46 |======================================================= GIMP System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 68.2 AVG: 71.7 MAX: 74.5 Basic Heatsink . MIN: 68.2 AVG: 71.0 MAX: 73.5 Fan SHIM ....... MIN: 39.9 AVG: 43.5 MAX: 45.8 FLIRC .......... MIN: 52.1 AVG: 54.2 MAX: 56.0 GIMP 2.10.8 Test: auto-levels Seconds < Lower Is Better No Heatsink .... 5.67 |======================================================== Basic Heatsink . 5.48 |====================================================== Fan SHIM ....... 4.54 |============================================= FLIRC .......... 5.40 |===================================================== GIMP System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 67.7 AVG: 71.1 MAX: 74.0 Basic Heatsink . MIN: 67.2 AVG: 70.6 MAX: 73.5 Fan SHIM ....... MIN: 39.9 AVG: 43.3 MAX: 45.3 FLIRC .......... MIN: 51.6 AVG: 54.4 MAX: 57.0 Zstd Compression 1.3.4 Compressing ubuntu-16.04.3-server-i386.img, Compression Level 19 Seconds < Lower Is Better No Heatsink .... 306.34 |====================================================== Basic Heatsink . 294.12 |==================================================== Fan SHIM ....... 288.77 |=================================================== FLIRC .......... 291.03 |=================================================== Zstd Compression 1.3.4 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 68 AVG: 83 MAX: 85 Basic Heatsink . MIN: 67 AVG: 82 MAX: 84 Fan SHIM ....... MIN: 40 AVG: 50 MAX: 52 FLIRC .......... MIN: 53 AVG: 63 MAX: 66 7-Zip Compression 16.02 Compress Speed Test MIPS > Higher Is Better No Heatsink .... 2623 |======================================== Basic Heatsink . 2706 |========================================== Fan SHIM ....... 3629 |======================================================== FLIRC .......... 3635 |======================================================== 7-Zip Compression 16.02 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 74 AVG: 85 MAX: 87 Basic Heatsink . MIN: 74 AVG: 85 MAX: 87 Fan SHIM ....... MIN: 42 AVG: 54 MAX: 57 FLIRC .......... MIN: 58 AVG: 66 MAX: 70 XZ Compression 5.2.4 Compressing ubuntu-16.04.3-server-i386.img, Compression Level 9 Seconds < Lower Is Better No Heatsink .... 464.71 |==================================================== Basic Heatsink . 458.86 |==================================================== Fan SHIM ....... 425.41 |================================================ FLIRC .......... 480.90 |====================================================== XZ Compression 5.2.4 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 75 AVG: 84 MAX: 87 Basic Heatsink . MIN: 76 AVG: 84 MAX: 86 Fan SHIM ....... MIN: 42 AVG: 51 MAX: 54 FLIRC .......... MIN: 57 AVG: 64 MAX: 67 LAME MP3 Encoding 3.100 WAV To MP3 Seconds < Lower Is Better No Heatsink .... 124.97 |====================================================== Basic Heatsink . 125.16 |====================================================== Fan SHIM ....... 125.15 |====================================================== FLIRC .......... 125.34 |====================================================== LAME MP3 Encoding 3.100 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 74 AVG: 78 MAX: 80 Basic Heatsink . MIN: 74 AVG: 77 MAX: 79 Fan SHIM ....... MIN: 41 AVG: 45 MAX: 47 FLIRC .......... MIN: 56 AVG: 59 MAX: 61 FLAC Audio Encoding 1.3.2 WAV To FLAC Seconds < Lower Is Better No Heatsink .... 113.75 |===================================================== Basic Heatsink . 113.60 |===================================================== Fan SHIM ....... 113.88 |===================================================== FLIRC .......... 116.36 |====================================================== FLAC Audio Encoding 1.3.2 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 71 AVG: 77 MAX: 80 Basic Heatsink . MIN: 70 AVG: 77 MAX: 80 Fan SHIM ....... MIN: 40 AVG: 45 MAX: 48 FLIRC .......... MIN: 53 AVG: 56 MAX: 59 GraphicsMagick 1.3.30 Operation: HWB Color Space Iterations Per Minute > Higher Is Better No Heatsink .... 71 |======================================================== Basic Heatsink . 73 |========================================================== Fan SHIM ....... 73 |========================================================== FLIRC .......... 73 |========================================================== GraphicsMagick 1.3.30 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 71 AVG: 79 MAX: 83 Basic Heatsink . MIN: 71 AVG: 78 MAX: 81 Fan SHIM ....... MIN: 40 AVG: 46 MAX: 49 FLIRC .......... MIN: 53 AVG: 57 MAX: 59 GraphicsMagick 1.3.30 Operation: Noise-Gaussian Iterations Per Minute > Higher Is Better No Heatsink .... 11 |============================== Basic Heatsink . 12 |================================= Fan SHIM ....... 21 |========================================================== FLIRC .......... 21 |========================================================== GraphicsMagick 1.3.30 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 74 AVG: 85 MAX: 87 Basic Heatsink . MIN: 73 AVG: 85 MAX: 87 Fan SHIM ....... MIN: 40 AVG: 55 MAX: 58 FLIRC .......... MIN: 53 AVG: 62 MAX: 66 GraphicsMagick 1.3.30 Operation: Enhanced Iterations Per Minute > Higher Is Better No Heatsink .... 16 |================================== Basic Heatsink . 17 |===================================== Fan SHIM ....... 27 |========================================================== FLIRC .......... 27 |========================================================== GraphicsMagick 1.3.30 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 76 AVG: 84 MAX: 87 Basic Heatsink . MIN: 77 AVG: 84 MAX: 87 Fan SHIM ....... MIN: 43 AVG: 54 MAX: 56 FLIRC .......... MIN: 57 AVG: 64 MAX: 67 GraphicsMagick 1.3.30 Operation: Resizing Iterations Per Minute > Higher Is Better No Heatsink .... 43 |=============================================== Basic Heatsink . 44 |================================================ Fan SHIM ....... 53 |========================================================== FLIRC .......... 53 |========================================================== GraphicsMagick 1.3.30 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 76 AVG: 83 MAX: 85 Basic Heatsink . MIN: 76 AVG: 82 MAX: 84 Fan SHIM ....... MIN: 43 AVG: 49 MAX: 51 FLIRC .......... MIN: 58 AVG: 62 MAX: 64 GraphicsMagick 1.3.30 Operation: Rotate Iterations Per Minute > Higher Is Better No Heatsink .... 67 |========================================================== Basic Heatsink . 65 |======================================================== Fan SHIM ....... 65 |======================================================== FLIRC .......... 66 |========================================================= GraphicsMagick 1.3.30 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 75 AVG: 78 MAX: 80 Basic Heatsink . MIN: 74 AVG: 77 MAX: 79 Fan SHIM ....... MIN: 41 AVG: 44 MAX: 46 FLIRC .......... MIN: 57 AVG: 59 MAX: 60 GraphicsMagick 1.3.30 Operation: Sharpen Iterations Per Minute > Higher Is Better No Heatsink .... 14 |=============================== Basic Heatsink . 15 |================================= Fan SHIM ....... 26 |========================================================== FLIRC .......... 25 |======================================================== GraphicsMagick 1.3.30 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 71 AVG: 85 MAX: 88 Basic Heatsink . MIN: 71 AVG: 85 MAX: 87 Fan SHIM ....... MIN: 40 AVG: 56 MAX: 60 FLIRC .......... MIN: 57 AVG: 66 MAX: 70 GraphicsMagick 1.3.30 Operation: Swirl Iterations Per Minute > Higher Is Better No Heatsink .... 29 |===================================== Basic Heatsink . 31 |======================================== Fan SHIM ....... 45 |========================================================== FLIRC .......... 45 |========================================================== GraphicsMagick 1.3.30 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 77 AVG: 84 MAX: 86 Basic Heatsink . MIN: 77 AVG: 83 MAX: 86 Fan SHIM ....... MIN: 45 AVG: 52 MAX: 56 FLIRC .......... MIN: 60 AVG: 65 MAX: 68 MBW 2018-09-08 Test: Memory Copy - Array Size: 128 MiB MiB/s > Higher Is Better No Heatsink .... 2343.22 |==================================================== Basic Heatsink . 2370.75 |===================================================== Fan SHIM ....... 2335.99 |==================================================== FLIRC .......... 2347.70 |==================================================== MBW 2018-09-08 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 76 AVG: 78 MAX: 79 Basic Heatsink . MIN: 75 AVG: 77 MAX: 79 Fan SHIM ....... MIN: 43 AVG: 44 MAX: 46 FLIRC .......... MIN: 59 AVG: 61 MAX: 63 MBW 2018-09-08 Test: Memory Copy, Fixed Block Size - Array Size: 128 MiB MiB/s > Higher Is Better No Heatsink .... 2363.95 |===================================================== Basic Heatsink . 2363.64 |===================================================== Fan SHIM ....... 2360.32 |===================================================== FLIRC .......... 2359.23 |===================================================== MBW 2018-09-08 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 73 AVG: 75 MAX: 77 Basic Heatsink . MIN: 73 AVG: 74 MAX: 76 Fan SHIM ....... MIN: 41 AVG: 43 MAX: 44 FLIRC .......... MIN: 58 AVG: 60 MAX: 61 Perl Benchmarks Test: Pod2html Seconds < Lower Is Better No Heatsink .... 0.61703693 |================================================== Basic Heatsink . 0.61673666 |================================================== Fan SHIM ....... 0.60858085 |================================================= FLIRC .......... 0.61440717 |================================================== Perl Benchmarks System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 71 AVG: 77 MAX: 79 Basic Heatsink . MIN: 71 AVG: 75 MAX: 77 Fan SHIM ....... MIN: 40 AVG: 45 MAX: 47 FLIRC .......... MIN: 58 AVG: 59 MAX: 61 Perl Benchmarks Test: Interpreter Seconds < Lower Is Better No Heatsink .... 0.00747203 |================================================ Basic Heatsink . 0.00783094 |================================================== Fan SHIM ....... 0.00774121 |================================================= FLIRC .......... 0.00745145 |================================================ Perl Benchmarks System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 69.1 AVG: 72.4 MAX: 75.0 Basic Heatsink . MIN: 68.2 AVG: 70.3 MAX: 73.5 Fan SHIM ....... MIN: 40.4 AVG: 42.9 MAX: 44.8 FLIRC .......... MIN: 51.6 AVG: 55.0 MAX: 58.9 PHPBench 0.8.1 PHP Benchmark Suite Score > Higher Is Better No Heatsink .... 101730 |====================================================== Basic Heatsink . 101143 |====================================================== Fan SHIM ....... 100428 |===================================================== FLIRC .......... 101368 |====================================================== PHPBench 0.8.1 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 68 AVG: 76 MAX: 80 Basic Heatsink . MIN: 66 AVG: 73 MAX: 76 Fan SHIM ....... MIN: 39 AVG: 45 MAX: 47 FLIRC .......... MIN: 52 AVG: 55 MAX: 57 PyBench 2018-02-16 Total For Average Test Times Milliseconds < Lower Is Better No Heatsink .... 5245 |======================================================== Basic Heatsink . 5248 |======================================================== Fan SHIM ....... 5251 |======================================================== FLIRC .......... 5258 |======================================================== PyBench 2018-02-16 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 71 AVG: 79 MAX: 81 Basic Heatsink . MIN: 70 AVG: 75 MAX: 77 Fan SHIM ....... MIN: 41 AVG: 46 MAX: 47 FLIRC .......... MIN: 51 AVG: 55 MAX: 58 RAMspeed SMP 3.5.0 Type: Copy - Benchmark: Integer MB/s > Higher Is Better No Heatsink .... 4597.69 |================================================ Basic Heatsink . 5025.90 |===================================================== Fan SHIM ....... 4966.20 |==================================================== FLIRC .......... 4453.97 |=============================================== RAMspeed SMP 3.5.0 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 73 AVG: 81 MAX: 83 Basic Heatsink . MIN: 71 AVG: 78 MAX: 80 Fan SHIM ....... MIN: 41 AVG: 47 MAX: 49 FLIRC .......... MIN: 53 AVG: 57 MAX: 59 RAMspeed SMP 3.5.0 Type: Scale - Benchmark: Integer MB/s > Higher Is Better No Heatsink .... 4612.19 |==================================================== Basic Heatsink . 4610.96 |==================================================== Fan SHIM ....... 4725.65 |===================================================== FLIRC .......... 4717.37 |===================================================== RAMspeed SMP 3.5.0 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 75 AVG: 82 MAX: 83 Basic Heatsink . MIN: 72 AVG: 79 MAX: 81 Fan SHIM ....... MIN: 42 AVG: 48 MAX: 50 FLIRC .......... MIN: 54 AVG: 58 MAX: 60 RAMspeed SMP 3.5.0 Type: Add - Benchmark: Integer MB/s > Higher Is Better No Heatsink .... 3749.20 |============================================== Basic Heatsink . 4325.21 |===================================================== Fan SHIM ....... 4359.46 |===================================================== FLIRC .......... 3994.09 |================================================= RAMspeed SMP 3.5.0 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 74 AVG: 82 MAX: 83 Basic Heatsink . MIN: 73 AVG: 79 MAX: 81 Fan SHIM ....... MIN: 42 AVG: 48 MAX: 50 FLIRC .......... MIN: 55 AVG: 58 MAX: 60 RAMspeed SMP 3.5.0 Type: Triad - Benchmark: Integer MB/s > Higher Is Better No Heatsink .... 4188.78 |=================================================== Basic Heatsink . 4356.70 |===================================================== Fan SHIM ....... 4255.84 |==================================================== FLIRC .......... 4304.95 |==================================================== RAMspeed SMP 3.5.0 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 75 AVG: 81 MAX: 83 Basic Heatsink . MIN: 73 AVG: 79 MAX: 81 Fan SHIM ....... MIN: 42 AVG: 48 MAX: 49 FLIRC .......... MIN: 55 AVG: 59 MAX: 60 RAMspeed SMP 3.5.0 Type: Average - Benchmark: Integer MB/s > Higher Is Better No Heatsink .... 4272.66 |================================================= Basic Heatsink . 4614.75 |===================================================== Fan SHIM ....... 4579.59 |===================================================== FLIRC .......... 4616.27 |===================================================== RAMspeed SMP 3.5.0 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 75 AVG: 82 MAX: 84 Basic Heatsink . MIN: 73 AVG: 80 MAX: 82 Fan SHIM ....... MIN: 43 AVG: 48 MAX: 49 FLIRC .......... MIN: 55 AVG: 58 MAX: 60 Rust Prime Benchmark Prime Number Test To 200,000,000 Seconds < Lower Is Better No Heatsink .... 1145.16 |===================================================== Basic Heatsink . 1017.12 |=============================================== Fan SHIM ....... 657.76 |============================== FLIRC .......... 657.62 |============================== Rust Prime Benchmark System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 75 AVG: 85 MAX: 87 Basic Heatsink . MIN: 74 AVG: 84 MAX: 87 Fan SHIM ....... MIN: 43 AVG: 55 MAX: 58 FLIRC .......... MIN: 55 AVG: 66 MAX: 69 DaCapo Benchmark 9.12-MR1 Java Test: H2 msec < Lower Is Better No Heatsink .... 17770 |======================================================= Basic Heatsink . 15617 |================================================ Fan SHIM ....... 14201 |============================================ FLIRC .......... 14209 |============================================ DaCapo Benchmark 9.12-MR1 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 76 AVG: 82 MAX: 85 Basic Heatsink . MIN: 76 AVG: 81 MAX: 84 Fan SHIM ....... MIN: 44 AVG: 49 MAX: 53 FLIRC .......... MIN: 59 AVG: 63 MAX: 65 DaCapo Benchmark 9.12-MR1 Java Test: Jython msec < Lower Is Better No Heatsink .... 40493 |======================================================= Basic Heatsink . 34023 |============================================== Fan SHIM ....... 32799 |============================================= FLIRC .......... 32876 |============================================= DaCapo Benchmark 9.12-MR1 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 75 AVG: 82 MAX: 85 Basic Heatsink . MIN: 74 AVG: 80 MAX: 83 Fan SHIM ....... MIN: 42 AVG: 48 MAX: 52 FLIRC .......... MIN: 58 AVG: 61 MAX: 64 DaCapo Benchmark 9.12-MR1 Java Test: Tradebeans msec < Lower Is Better No Heatsink .... 31441 |======================================================= Basic Heatsink . 28877 |=================================================== Fan SHIM ....... 23160 |========================================= FLIRC .......... 23189 |========================================= DaCapo Benchmark 9.12-MR1 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 75 AVG: 83 MAX: 86 Basic Heatsink . MIN: 74 AVG: 81 MAX: 85 Fan SHIM ....... MIN: 42 AVG: 49 MAX: 54 FLIRC .......... MIN: 57 AVG: 61 MAX: 64 DaCapo Benchmark 9.12-MR1 Java Test: Tradesoap msec < Lower Is Better No Heatsink .... 118920 |====================================================== Basic Heatsink . 108112 |================================================= Fan SHIM ....... 87325 |======================================== FLIRC .......... 88018 |======================================== DaCapo Benchmark 9.12-MR1 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 75 AVG: 84 MAX: 87 Basic Heatsink . MIN: 75 AVG: 83 MAX: 86 Fan SHIM ....... MIN: 43 AVG: 52 MAX: 56 FLIRC .......... MIN: 57 AVG: 63 MAX: 66 Smallpt 1.0 Global Illumination Renderer; 128 Samples Seconds < Lower Is Better No Heatsink .... 282.09 |====================================================== Basic Heatsink . 250.15 |================================================ Fan SHIM ....... 128.84 |========================= FLIRC .......... 128.64 |========================= Smallpt 1.0 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 76 AVG: 86 MAX: 88 Basic Heatsink . MIN: 76 AVG: 85 MAX: 87 Fan SHIM ....... MIN: 43 AVG: 58 MAX: 61 FLIRC .......... MIN: 59 AVG: 69 MAX: 72 SciMark 2.0 Computational Test: Composite Mflops > Higher Is Better No Heatsink .... 143.47 |===================================================== Basic Heatsink . 144.03 |====================================================== Fan SHIM ....... 144.27 |====================================================== FLIRC .......... 144.93 |====================================================== SciMark 2.0 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 76 AVG: 80 MAX: 82 Basic Heatsink . MIN: 75 AVG: 78 MAX: 81 Fan SHIM ....... MIN: 43 AVG: 46 MAX: 48 FLIRC .......... MIN: 60 AVG: 63 MAX: 65 SciMark 2.0 Computational Test: Fast Fourier Transform Mflops > Higher Is Better No Heatsink .... 27.97 |======================================================= Basic Heatsink . 27.69 |====================================================== Fan SHIM ....... 24.21 |================================================ FLIRC .......... 24.49 |================================================ SciMark 2.0 Computational Test: Jacobi Successive Over-Relaxation Mflops > Higher Is Better No Heatsink .... 350.56 |===================================================== Basic Heatsink . 348.23 |===================================================== Fan SHIM ....... 353.49 |===================================================== FLIRC .......... 357.07 |====================================================== SciMark 2.0 Computational Test: Monte Carlo Mflops > Higher Is Better No Heatsink .... 41.97 |======================================================= Basic Heatsink . 41.92 |======================================================= Fan SHIM ....... 41.86 |======================================================= FLIRC .......... 41.87 |======================================================= SciMark 2.0 Computational Test: Sparse Matrix Multiply Mflops > Higher Is Better No Heatsink .... 141.28 |===================================================== Basic Heatsink . 144.87 |====================================================== Fan SHIM ....... 144.04 |====================================================== FLIRC .......... 144.27 |====================================================== SciMark 2.0 Computational Test: Dense LU Matrix Factorization Mflops > Higher Is Better No Heatsink .... 155.55 |===================================================== Basic Heatsink . 157.41 |====================================================== Fan SHIM ....... 157.74 |====================================================== FLIRC .......... 156.96 |====================================================== Tinymembench 2018-05-28 Standard Memcpy MB/s > Higher Is Better No Heatsink .... 2743.13 |==================================================== Basic Heatsink . 2778.37 |===================================================== Fan SHIM ....... 2794.27 |===================================================== FLIRC .......... 2789.83 |===================================================== Tinymembench 2018-05-28 Standard Memset MB/s > Higher Is Better No Heatsink .... 3922.23 |===================================================== Basic Heatsink . 3906.70 |===================================================== Fan SHIM ....... 3850.73 |==================================================== FLIRC .......... 3850.73 |==================================================== Tinymembench 2018-05-28 System Temperature Monitor Celsius < Lower Is Better No Heatsink .... MIN: 71 AVG: 76 MAX: 80 Basic Heatsink . MIN: 69 AVG: 73 MAX: 78 Fan SHIM ....... MIN: 40 AVG: 44 MAX: 47 FLIRC .......... MIN: 53 AVG: 57 MAX: 61 System Temperature Monitor Phoronix Test Suite System Monitoring Celsius No Heatsink .... MIN: 61 AVG: 82 MAX: 88 Basic Heatsink . MIN: 62 AVG: 81 MAX: 87 Fan SHIM ....... MIN: 39 AVG: 49 MAX: 61 FLIRC .......... MIN: 34 AVG: 60 MAX: 72 Geometric Mean Of All Test Results Result Composite - Raspberry Pi 4 Thermals Geometric Mean > Higher Is Better No Heatsink .... 28.35 |=============================================== Basic Heatsink . 29.04 |================================================= Fan SHIM ....... 32.88 |======================================================= FLIRC .......... 32.48 |======================================================