Core i7 820Q vs Core i7 640M
1st gen Core i7 CPU comparison


Core i7 820Q: 

	Processor: Intel Core i7 820Q @ 1.73GHz (4 Cores / 8 Threads), Motherboard: Dell 041WH1 (A16 BIOS), Chipset: Intel Core DMI, Memory: 8GB, Disk: T-FORCE 256GB, Graphics: NVIDIA Quadro FX 1800M 1GB, Audio: IDT 92HD81B1C5, Network: Intel 82577LM + Intel Centrino Ultimate-N 6300

	OS: Fedora Linux 37, Kernel: 6.1.14-200.fc37.x86_64 (x86_64), Desktop: GNOME Shell 43.3, Display Server: X Server, Compiler: GCC 12.2.1 20221121, File-System: ext4, Screen Resolution: 1920x1080

Core i7 640M: 

	Processor: Intel Core i7 640M @ 2.80GHz (2 Cores / 4 Threads), Motherboard: Dell 041WH1 (A16 BIOS), Chipset: Intel Core DRAM, Memory: 8GB, Disk: T-FORCE 256GB, Graphics: NVIDIA Quadro FX 1800M 1GB, Audio: IDT 92HD81B1C5, Network: Intel 82577LM + Intel Centrino Ultimate-N 6300

	OS: Fedora Linux 37, Kernel: 6.2.12-200.fc37.x86_64 (x86_64), Desktop: GNOME Shell 43.4, Display Server: X Server, Compiler: GCC 12.2.1 20221121, File-System: ext4, Screen Resolution: 1920x1080

Core i5 6200U: 

	Processor: Intel Core i5-6200U @ 2.80GHz (2 Cores / 4 Threads), Motherboard: LENOVO 20FU001QGE (R08ET67W 1.41 BIOS), Chipset: Intel Xeon E3-1200 v5/E3-1500, Memory: 8GB, Disk: 256GB SAMSUNG MZ7LN256, Graphics: Intel HD 520 SKL GT2 7GB (1000MHz), Audio: Realtek ALC293, Network: Intel I219-V + Intel 8260

	OS: EndeavourOS rolling, Kernel: 6.3.4-arch1-1 (x86_64), Desktop: GNOME Shell 44.1, Display Server: X Server + Wayland, OpenGL: 4.6 Mesa 23.1.0, Compiler: GCC 13.1.1 20230429, File-System: ext4, Screen Resolution: 1920x1080

Core i5 4210M: 

	Processor: Intel Core i5-4210M @ 3.20GHz (2 Cores / 4 Threads), Motherboard: LENOVO 20BFS34A00 (GMET82WW 2.30 BIOS), Chipset: Intel Xeon E3-1200 v3/4th, Memory: 16GB, Disk: 250GB Crucial CT250MX2, Graphics: Intel HD 4600 HSW GT2 2GB (1150MHz), Audio: Intel Xeon E3-1200 v3/4th, Network: Intel I217-LM + Intel 7260

	OS: ManjaroLinux 22.1.2, Kernel: 6.3.3-1-MANJARO (x86_64), Desktop: GNOME Shell 43.5, Display Server: X Server + Wayland, OpenGL: 4.6 Mesa 23.0.3, Compiler: GCC 12.2.1 20230201 + Clang 15.0.7 + LLVM 15.0.7, File-System: ext4, Screen Resolution: 1920x1080


Sample Pi Program

Seconds < Lower Is Better
Core i7 820Q .. 18.659 |=======================================================
Core i7 640M .. 16.104 |===============================================
Core i5 6200U . 10.931 |================================
Core i5 4210M . 9.863  |=============================


RAR Compression 6.0.2
Linux Source Tree Archiving To RAR
Seconds < Lower Is Better
Core i7 820Q .. 164.61 |=======================================================
Core i7 640M .. 137.06 |==============================================
Core i5 6200U . 118.65 |========================================
Core i5 4210M . 93.56  |===============================


FLAC Audio Encoding 1.4
WAV To FLAC
Seconds < Lower Is Better
Core i7 820Q .. 53.78 |========================================================
Core i7 640M .. 47.43 |=================================================
Core i5 6200U . 28.25 |=============================
Core i5 4210M . 30.26 |================================


LAME MP3 Encoding 3.100
WAV To MP3
Seconds < Lower Is Better
Core i7 820Q .. 64.37 |========================================================
Core i7 640M .. 50.66 |============================================
Core i5 6200U . 13.26 |============
Core i5 4210M . 11.83 |==========


Timed MPlayer Compilation 1.5
Time To Compile
Seconds < Lower Is Better
Core i7 820Q .. 262.87 |========================================
Core i7 640M .. 358.75 |=======================================================


Timed Apache Compilation 2.4.41
Time To Compile
Seconds < Lower Is Better
Core i7 820Q .. 84.73  |==============================================
Core i7 640M .. 98.49  |=====================================================
Core i5 6200U . 102.10 |=======================================================
Core i5 4210M . 88.70  |================================================


7-Zip Compression 22.01
Test: Compression Rating
MIPS > Higher Is Better
Core i7 820Q .. 12782 |========================================================
Core i7 640M .. 9230  |========================================
Core i5 6200U . 11188 |=================================================
Core i5 4210M . 12614 |=======================================================


7-Zip Compression 22.01
Test: Decompression Rating
MIPS > Higher Is Better
Core i7 820Q .. 10928 |========================================================
Core i7 640M .. 8659  |============================================
Core i5 6200U . 7970  |=========================================
Core i5 4210M . 9123  |===============================================


Sysbench 1.0.20
Test: RAM / Memory
MiB/sec > Higher Is Better
Core i7 820Q .. 11147.96 |==================================================
Core i7 640M .. 11131.98 |=================================================
Core i5 6200U . 10995.29 |=================================================
Core i5 4210M . 11930.12 |=====================================================


Sysbench 1.0.20
Test: CPU
Events Per Second > Higher Is Better
Core i7 820Q .. 3306.57 |======================================================
Core i7 640M .. 2540.16 |=========================================
Core i5 6200U . 3009.31 |=================================================
Core i5 4210M . 3228.12 |=====================================================


Smallpt 1.0
Global Illumination Renderer; 128 Samples
Seconds < Lower Is Better
Core i7 820Q .. 87.56  |=============================================
Core i7 640M .. 108.21 |=======================================================
Core i5 6200U . 65.06  |=================================
Core i5 4210M . 66.78  |==================================


Sudokut 0.4
Total Time
Seconds < Lower Is Better
Core i7 820Q .. 27.38 |========================================================
Core i7 640M .. 23.29 |================================================
Core i5 6200U . 17.23 |===================================
Core i5 4210M . 15.23 |===============================


PyBench 2018-02-16
Total For Average Test Times
Milliseconds < Lower Is Better
Core i7 820Q .. 2700 |=========================================================
Core i7 640M .. 2000 |==========================================
Core i5 6200U . 1419 |==============================
Core i5 4210M . 1446 |===============================