APITest NVIDIA + AMD Linux Perf Updated APITest Linux graphics benchmark results by Michael Larabel for a future article on Phoronix.com... Using latest Linux graphics drivers from AMD and NVIDIA at time of testing plus newer APITest test profile that's a recent Git snapshot from upstream. NVIDIA GeForce GT 740: Processor: Intel Core i7-4790K @ 4.40GHz (8 Cores), Motherboard: ASRock Z97 Extreme6, Chipset: Intel 4th Gen Core DRAM, Memory: 16384MB, Disk: 128GB Crucial_CT128MX1, Graphics: eVGA NVIDIA GeForce GT 740 1024MB (1084/2500MHz), Audio: Realtek ALC1150, Monitor: MX279, Network: Intel Connection OS: Ubuntu 14.04, Kernel: 3.14.13-031413-generic (x86_64), Desktop: Unity 7.2.2, Display Server: X Server 1.15.1, Display Driver: NVIDIA 340.24, OpenGL: 4.3.0, Compiler: GCC 4.8.2, File-System: ext4, Screen Resolution: 1920x1080 NVIDIA GeForce GTX 750: Processor: Intel Core i7-4790K @ 4.40GHz (8 Cores), Motherboard: ASRock Z97 Extreme6, Chipset: Intel 4th Gen Core DRAM, Memory: 16384MB, Disk: 128GB Crucial_CT128MX1, Graphics: eVGA NVIDIA GeForce GTX 750 1024MB (1019/2505MHz), Audio: Realtek ALC1150, Monitor: MX279, Network: Intel Connection OS: Ubuntu 14.04, Kernel: 3.14.13-031413-generic (x86_64), Desktop: Unity 7.2.2, Display Server: X Server 1.15.1, Display Driver: NVIDIA 340.24, OpenGL: 4.3.0, Compiler: GCC 4.8.2, File-System: ext4, Screen Resolution: 1920x1080 NVIDIA GeForce GTX 750 Ti: Processor: Intel Core i7-4790K @ 4.40GHz (8 Cores), Motherboard: ASRock Z97 Extreme6, Chipset: Intel 4th Gen Core DRAM, Memory: 16384MB, Disk: 128GB Crucial_CT128MX1, Graphics: NVIDIA GeForce GTX 750 Ti 2048MB (1150/2700MHz), Audio: Realtek ALC1150, Monitor: MX279, Network: Intel Connection OS: Ubuntu 14.04, Kernel: 3.14.13-031413-generic (x86_64), Desktop: Unity 7.2.2, Display Server: X Server 1.15.1, Display Driver: NVIDIA 340.24, OpenGL: 4.3.0, Compiler: GCC 4.8.2, File-System: ext4, Screen Resolution: 1920x1080 NVIDIA GeForce GTX 760: Processor: Intel Core i7-4790K @ 4.40GHz (8 Cores), Motherboard: ASRock Z97 Extreme6, Chipset: Intel 4th Gen Core DRAM, Memory: 16384MB, Disk: 128GB Crucial_CT128MX1, Graphics: NVIDIA GeForce GTX 760 2048MB (980/3004MHz), Audio: Realtek ALC1150, Monitor: MX279, Network: Intel Connection OS: Ubuntu 14.04, Kernel: 3.14.13-031413-generic (x86_64), Desktop: Unity 7.2.2, Display Server: X Server 1.15.1, Display Driver: NVIDIA 340.24, OpenGL: 4.3.0, Compiler: GCC 4.8.2, File-System: ext4, Screen Resolution: 1920x1080 NVIDIA GeForce GTX 770: Processor: Intel Core i7-4790K @ 4.40GHz (8 Cores), Motherboard: ASRock Z97 Extreme6, Chipset: Intel 4th Gen Core DRAM, Memory: 16384MB, Disk: 128GB Crucial_CT128MX1, Graphics: NVIDIA GeForce GTX 770 2048MB (1045/3505MHz), Audio: Realtek ALC1150, Monitor: MX279, Network: Intel Connection OS: Ubuntu 14.04, Kernel: 3.14.13-031413-generic (x86_64), Desktop: Unity 7.2.2, Display Server: X Server 1.15.1, Display Driver: NVIDIA 340.24, OpenGL: 4.3.0, Compiler: GCC 4.8.2, File-System: ext4, Screen Resolution: 1920x1080 NVIDIA GeForce GTX TITAN: Processor: Intel Core i7-4790K @ 4.40GHz (8 Cores), Motherboard: ASRock Z97 Extreme6, Chipset: Intel 4th Gen Core DRAM, Memory: 16384MB, Disk: 128GB Crucial_CT128MX1, Graphics: NVIDIA GeForce GTX TITAN 6144MB (836/3004MHz), Audio: Realtek ALC1150, Monitor: MX279, Network: Intel Connection OS: Ubuntu 14.04, Kernel: 3.14.13-031413-generic (x86_64), Desktop: Unity 7.2.2, Display Server: X Server 1.15.1, Display Driver: NVIDIA 340.24, OpenGL: 4.3.0, Compiler: GCC 4.8.2, File-System: ext4, Screen Resolution: 1920x1080 NVIDIA GeForce GTX 780 Ti: Processor: Intel Core i7-4790K @ 4.40GHz (8 Cores), Motherboard: ASRock Z97 Extreme6, Chipset: Intel 4th Gen Core DRAM, Memory: 16384MB, Disk: 128GB Crucial_CT128MX1, Graphics: NVIDIA GeForce GTX 780 Ti 3072MB (875/3500MHz), Audio: Realtek ALC1150, Monitor: MX279, Network: Intel Connection OS: Ubuntu 14.04, Kernel: 3.14.13-031413-generic (x86_64), Desktop: Unity 7.2.2, Display Server: X Server 1.15.1, Display Driver: NVIDIA 340.24, OpenGL: 4.3.0, Compiler: GCC 4.8.2, File-System: ext4, Screen Resolution: 1920x1080 AMD Radeon R7 260X: Processor: Intel Core i7-4790K @ 4.40GHz (8 Cores), Motherboard: ASRock Z97 Extreme6, Chipset: Intel 4th Gen Core DRAM, Memory: 16384MB, Disk: 128GB Crucial_CT128MX1, Graphics: Sapphire AMD Radeon R7 200 2048MB, Audio: Realtek ALC1150, Monitor: MX279, Network: Intel Connection OS: Ubuntu 14.04, Kernel: 3.14.13-031413-generic (x86_64), Desktop: Unity 7.2.2, Display Server: X Server 1.15.1, Display Driver: fglrx 14.20.7, OpenGL: 4.3.12967, Compiler: GCC 4.8.2, File-System: ext4, Screen Resolution: 1920x1080 AMD Radeon R9 270X: Processor: Intel Core i7-4790K @ 4.40GHz (8 Cores), Motherboard: ASRock Z97 Extreme6, Chipset: Intel 4th Gen Core DRAM, Memory: 16384MB, Disk: 128GB Crucial_CT128MX1, Graphics: Supported device 6810 2048MB, Audio: Realtek ALC1150, Monitor: MX279, Network: Intel Connection OS: Ubuntu 14.04, Kernel: 3.14.13-031413-generic (x86_64), Desktop: Unity 7.2.2, Display Server: X Server 1.15.1, Display Driver: fglrx 14.20.7, OpenGL: 4.3.12967, Compiler: GCC 4.8.2, File-System: ext4, Screen Resolution: 1920x1080 AMD Radeon R9 290: Processor: Intel Core i7-4790K @ 4.40GHz (8 Cores), Motherboard: ASRock Z97 Extreme6, Chipset: Intel 4th Gen Core DRAM, Memory: 16384MB, Disk: 128GB Crucial_CT128MX1, Graphics: Supported device 67B1 4096MB, Audio: Realtek ALC1150, Monitor: MX279, Network: Intel Connection OS: Ubuntu 14.04, Kernel: 3.14.13-031413-generic (x86_64), Desktop: Unity 7.2.2, Display Server: X Server 1.15.1, Display Driver: fglrx 14.20.7, OpenGL: 4.3.12967, Compiler: GCC 4.8.2, File-System: ext4, Screen Resolution: 1920x1080 APITest 2014-07-26 Resolution: 1920 x 1080 - Test: TexturedQuadsProblem GLSBTA Frames Per Second > Higher Is Better NVIDIA GeForce GT 740 ..... 1056.72 |==================================== NVIDIA GeForce GTX 750 .... 1241.42 |========================================== NVIDIA GeForce GTX 750 Ti . 1235.66 |========================================== NVIDIA GeForce GTX 760 .... 1224.05 |========================================= NVIDIA GeForce GTX 770 .... 1186.53 |======================================== NVIDIA GeForce GTX TITAN .. 1224.06 |========================================= NVIDIA GeForce GTX 780 Ti . 1226.79 |========================================== APITest 2014-07-26 Resolution: 1920 x 1080 - Test: UntexturedObjects GLUniform Frames Per Second > Higher Is Better NVIDIA GeForce GT 740 ..... 43.26 |=========================================== NVIDIA GeForce GTX 750 .... 43.23 |=========================================== NVIDIA GeForce GTX 750 Ti . 44.11 |============================================ NVIDIA GeForce GTX 760 .... 41.10 |========================================= NVIDIA GeForce GTX 770 .... 42.53 |========================================== NVIDIA GeForce GTX TITAN .. 43.82 |============================================ NVIDIA GeForce GTX 780 Ti . 43.59 |=========================================== AMD Radeon R7 260X ........ 11.94 |============ AMD Radeon R9 270X ........ 12.19 |============ AMD Radeon R9 290 ......... 12.46 |============ APITest 2014-07-26 Resolution: 1920 x 1080 - Test: TexturedQuadsProblem GLNaive Frames Per Second > Higher Is Better NVIDIA GeForce GT 740 ..... 453.83 |========================================= NVIDIA GeForce GTX 750 .... 471.47 |=========================================== NVIDIA GeForce GTX 750 Ti . 466.13 |=========================================== NVIDIA GeForce GTX 760 .... 455.00 |========================================= NVIDIA GeForce GTX 770 .... 451.35 |========================================= NVIDIA GeForce GTX TITAN .. 457.81 |========================================== NVIDIA GeForce GTX 780 Ti . 458.69 |========================================== AMD Radeon R7 260X ........ 76.15 |======= AMD Radeon R9 270X ........ 74.87 |======= AMD Radeon R9 290 ......... 74.90 |======= APITest 2014-07-26 Resolution: 1920 x 1080 - Test: TexturedQuadsProblem GLNoTex Frames Per Second > Higher Is Better NVIDIA GeForce GT 740 ..... 1423.82 |=================================== NVIDIA GeForce GTX 750 .... 1692.32 |========================================== NVIDIA GeForce GTX 750 Ti . 1643.00 |========================================= NVIDIA GeForce GTX 760 .... 1560.97 |======================================= NVIDIA GeForce GTX 770 .... 1553.43 |======================================= NVIDIA GeForce GTX TITAN .. 1614.30 |======================================== NVIDIA GeForce GTX 780 Ti . 1615.54 |======================================== AMD Radeon R7 260X ........ 512.08 |============= AMD Radeon R9 270X ........ 664.45 |================ AMD Radeon R9 290 ......... 554.22 |============== APITest 2014-07-26 Resolution: 1920 x 1080 - Test: UntexturedObjects GLDrawLoop Frames Per Second > Higher Is Better NVIDIA GeForce GT 740 ..... 59.29 |=========================================== NVIDIA GeForce GTX 750 .... 59.25 |=========================================== NVIDIA GeForce GTX 750 Ti . 60.25 |============================================ NVIDIA GeForce GTX 760 .... 58.96 |=========================================== NVIDIA GeForce GTX 770 .... 58.60 |=========================================== NVIDIA GeForce GTX TITAN .. 60.36 |============================================ NVIDIA GeForce GTX 780 Ti . 60.32 |============================================ AMD Radeon R7 260X ........ 26.25 |=================== AMD Radeon R9 270X ........ 26.92 |==================== AMD Radeon R9 290 ......... 25.15 |================== APITest 2014-07-26 Resolution: 1920 x 1080 - Test: UntexturedObjects GLTexCoord Frames Per Second > Higher Is Better NVIDIA GeForce GT 740 ..... 46.99 |============================================ NVIDIA GeForce GTX 750 .... 47.47 |============================================ NVIDIA GeForce GTX 750 Ti . 46.74 |=========================================== NVIDIA GeForce GTX 760 .... 46.54 |=========================================== NVIDIA GeForce GTX 770 .... 46.81 |=========================================== NVIDIA GeForce GTX TITAN .. 44.00 |========================================= NVIDIA GeForce GTX 780 Ti . 45.13 |========================================== AMD Radeon R7 260X ........ 11.36 |=========== AMD Radeon R9 270X ........ 11.47 |=========== AMD Radeon R9 290 ......... 11.38 |=========== APITest 2014-07-26 Resolution: 1920 x 1080 - Test: UntexturedObjects GLBufferRange Frames Per Second > Higher Is Better NVIDIA GeForce GT 740 ..... 26.88 |============================================ NVIDIA GeForce GTX 750 .... 26.89 |============================================ NVIDIA GeForce GTX 750 Ti . 27.02 |============================================ NVIDIA GeForce GTX 760 .... 26.81 |============================================ NVIDIA GeForce GTX 770 .... 26.76 |============================================ NVIDIA GeForce GTX TITAN .. 26.82 |============================================ NVIDIA GeForce GTX 780 Ti . 26.98 |============================================ AMD Radeon R7 260X ........ 9.45 |=============== AMD Radeon R9 270X ........ 9.70 |================ AMD Radeon R9 290 ......... 9.74 |================ APITest 2014-07-26 Resolution: 1920 x 1080 - Test: DynamicStreaming GLBufferSubData Frames Per Second > Higher Is Better NVIDIA GeForce GT 740 ..... 2.35 |============================================= NVIDIA GeForce GTX 750 .... 2.01 |====================================== NVIDIA GeForce GTX 750 Ti . 2.01 |====================================== NVIDIA GeForce GTX 760 .... 2.32 |============================================ NVIDIA GeForce GTX 770 .... 2.37 |============================================= NVIDIA GeForce GTX TITAN .. 1.95 |===================================== NVIDIA GeForce GTX 780 Ti . 1.95 |===================================== AMD Radeon R7 260X ........ 0.22 |==== AMD Radeon R9 270X ........ 1.20 |======================= AMD Radeon R9 290 ......... 0.71 |============= APITest 2014-07-26 Resolution: 1920 x 1080 - Test: DynamicStreaming GLMapPersistent Frames Per Second > Higher Is Better NVIDIA GeForce GT 740 ..... 139.60 |========================================== NVIDIA GeForce GTX 750 .... 135.36 |========================================= NVIDIA GeForce GTX 750 Ti . 141.83 |=========================================== NVIDIA GeForce GTX 760 .... 140.57 |=========================================== NVIDIA GeForce GTX 770 .... 137.23 |========================================== NVIDIA GeForce GTX TITAN .. 139.22 |========================================== NVIDIA GeForce GTX 780 Ti . 133.36 |======================================== AMD Radeon R7 260X ........ 25.18 |======== AMD Radeon R9 270X ........ 28.68 |========= AMD Radeon R9 290 ......... 22.64 |======= APITest 2014-07-26 Resolution: 1920 x 1080 - Test: UntexturedObjects GLBufferSubData Frames Per Second > Higher Is Better NVIDIA GeForce GT 740 ..... 2.35 |============================================= NVIDIA GeForce GTX 750 .... 2.01 |====================================== NVIDIA GeForce GTX 750 Ti . 2.01 |====================================== NVIDIA GeForce GTX 760 .... 2.31 |============================================ NVIDIA GeForce GTX 770 .... 2.37 |============================================= NVIDIA GeForce GTX TITAN .. 1.95 |===================================== NVIDIA GeForce GTX 780 Ti . 1.95 |===================================== AMD Radeon R7 260X ........ 0.24 |===== AMD Radeon R9 270X ........ 1.20 |======================= AMD Radeon R9 290 ......... 0.70 |============= APITest 2014-07-26 Resolution: 1920 x 1080 - Test: UntexturedObjects GLDynamicBuffer Frames Per Second > Higher Is Better NVIDIA GeForce GT 740 ..... 7.30 |========================================== NVIDIA GeForce GTX 750 .... 7.81 |============================================= NVIDIA GeForce GTX 750 Ti . 7.83 |============================================= NVIDIA GeForce GTX 760 .... 7.83 |============================================= NVIDIA GeForce GTX 770 .... 7.16 |========================================= NVIDIA GeForce GTX TITAN .. 7.21 |========================================= NVIDIA GeForce GTX 780 Ti . 7.79 |============================================= AMD Radeon R7 260X ........ 0.16 |= AMD Radeon R9 270X ........ 0.64 |==== AMD Radeon R9 290 ......... 0.36 |== APITest 2014-07-26 Resolution: 1920 x 1080 - Test: UntexturedObjects GLMapPersistent Frames Per Second > Higher Is Better NVIDIA GeForce GT 740 ..... 140.42 |=========================================== NVIDIA GeForce GTX 750 .... 131.77 |======================================== NVIDIA GeForce GTX 750 Ti . 138.71 |========================================== NVIDIA GeForce GTX 760 .... 138.74 |========================================== NVIDIA GeForce GTX 770 .... 137.26 |========================================== NVIDIA GeForce GTX TITAN .. 140.91 |=========================================== NVIDIA GeForce GTX 780 Ti . 135.97 |========================================= AMD Radeon R7 260X ........ 25.23 |======== AMD Radeon R9 270X ........ 28.67 |========= AMD Radeon R9 290 ......... 22.65 |======= APITest 2014-07-26 Resolution: 1920 x 1080 - Test: TexturedQuadsProblem GLNaiveUniform Frames Per Second > Higher Is Better NVIDIA GeForce GT 740 ..... 488.03 |========================================== NVIDIA GeForce GTX 750 .... 477.21 |========================================= NVIDIA GeForce GTX 750 Ti . 497.79 |========================================== NVIDIA GeForce GTX 760 .... 504.96 |=========================================== NVIDIA GeForce GTX 770 .... 492.55 |========================================== NVIDIA GeForce GTX TITAN .. 503.40 |=========================================== NVIDIA GeForce GTX 780 Ti . 505.27 |=========================================== AMD Radeon R7 260X ........ 81.75 |======= AMD Radeon R9 270X ........ 82.01 |======= AMD Radeon R9 290 ......... 82.48 |======= APITest 2014-07-26 Resolution: 1920 x 1080 - Test: TexturedQuadsProblem GLNoTexUniform Frames Per Second > Higher Is Better NVIDIA GeForce GT 740 ..... 1263.52 |========================================= NVIDIA GeForce GTX 750 .... 1286.65 |========================================= NVIDIA GeForce GTX 750 Ti . 1277.14 |========================================= NVIDIA GeForce GTX 760 .... 1227.66 |======================================== NVIDIA GeForce GTX 770 .... 1191.66 |====================================== NVIDIA GeForce GTX TITAN .. 1221.59 |======================================= NVIDIA GeForce GTX 780 Ti . 1303.69 |========================================== AMD Radeon R7 260X ........ 308.69 |========== AMD Radeon R9 270X ........ 303.95 |========== AMD Radeon R9 290 ......... 300.71 |========== APITest 2014-07-26 Resolution: 1920 x 1080 - Test: TexturedQuadsProblem GLTextureArray Frames Per Second > Higher Is Better NVIDIA GeForce GT 740 ..... 1134.05 |============================= NVIDIA GeForce GTX 750 .... 1590.09 |========================================= NVIDIA GeForce GTX 750 Ti . 1572.01 |========================================= NVIDIA GeForce GTX 760 .... 1522.26 |======================================== NVIDIA GeForce GTX 770 .... 1542.36 |======================================== NVIDIA GeForce GTX TITAN .. 1569.06 |========================================= NVIDIA GeForce GTX 780 Ti . 1615.80 |========================================== AMD Radeon R7 260X ........ 509.48 |============= AMD Radeon R9 270X ........ 658.86 |================= AMD Radeon R9 290 ......... 551.98 |============== APITest 2014-07-26 Resolution: 1920 x 1080 - Test: DynamicStreaming GLMapUnsynchronized Frames Per Second > Higher Is Better NVIDIA GeForce GT 740 ..... 1.45 |================================== NVIDIA GeForce GTX 750 .... 1.90 |============================================= NVIDIA GeForce GTX 750 Ti . 1.90 |============================================= NVIDIA GeForce GTX 760 .... 1.49 |=================================== NVIDIA GeForce GTX 770 .... 1.50 |==================================== NVIDIA GeForce GTX TITAN .. 1.31 |=============================== NVIDIA GeForce GTX 780 Ti . 1.34 |================================ AMD Radeon R7 260X ........ 1.33 |================================ AMD Radeon R9 270X ........ 1.32 |=============================== AMD Radeon R9 290 ......... 1.32 |=============================== APITest 2014-07-26 Resolution: 1920 x 1080 - Test: UntexturedObjects GLBufferStorage-SDP Frames Per Second > Higher Is Better NVIDIA GeForce GT 740 ..... 60.10 |==================================== NVIDIA GeForce GTX 750 .... 57.44 |================================== NVIDIA GeForce GTX 750 Ti . 56.39 |================================== NVIDIA GeForce GTX 760 .... 72.52 |=========================================== NVIDIA GeForce GTX 770 .... 73.93 |============================================ NVIDIA GeForce GTX TITAN .. 56.32 |================================== NVIDIA GeForce GTX 780 Ti . 52.47 |=============================== AMD Radeon R7 260X ........ 7.15 |==== AMD Radeon R9 270X ........ 8.86 |===== AMD Radeon R9 290 ......... 40.22 |======================== APITest 2014-07-26 Resolution: 1920 x 1080 - Test: UntexturedObjects GLMapUnsynchronized Frames Per Second > Higher Is Better NVIDIA GeForce GT 740 ..... 1.45 |================================== NVIDIA GeForce GTX 750 .... 1.90 |============================================= NVIDIA GeForce GTX 750 Ti . 1.90 |============================================= NVIDIA GeForce GTX 760 .... 1.49 |=================================== NVIDIA GeForce GTX 770 .... 1.50 |==================================== NVIDIA GeForce GTX TITAN .. 1.31 |=============================== NVIDIA GeForce GTX 780 Ti . 1.37 |================================ AMD Radeon R7 260X ........ 1.32 |=============================== AMD Radeon R9 270X ........ 1.32 |=============================== AMD Radeon R9 290 ......... 1.32 |=============================== APITest 2014-07-26 Resolution: 1920 x 1080 - Test: UntexturedObjects GLBufferStorage-NoSDP Frames Per Second > Higher Is Better NVIDIA GeForce GT 740 ..... 149.70 |============================== NVIDIA GeForce GTX 750 .... 179.56 |==================================== NVIDIA GeForce GTX 750 Ti . 179.87 |==================================== NVIDIA GeForce GTX 760 .... 207.76 |========================================== NVIDIA GeForce GTX 770 .... 213.90 |=========================================== NVIDIA GeForce GTX TITAN .. 177.52 |==================================== NVIDIA GeForce GTX 780 Ti . 183.44 |===================================== AMD Radeon R7 260X ........ 7.18 |= AMD Radeon R9 270X ........ 8.87 |== AMD Radeon R9 290 ......... 37.86 |======== APITest 2014-07-26 Resolution: 1920 x 1080 - Test: UntexturedObjects GLMultiDrawBuffer-SDP Frames Per Second > Higher Is Better NVIDIA GeForce GT 740 ..... 51.97 |===================================== NVIDIA GeForce GTX 750 .... 50.27 |=================================== NVIDIA GeForce GTX 750 Ti . 49.65 |=================================== NVIDIA GeForce GTX 760 .... 61.05 |=========================================== NVIDIA GeForce GTX 770 .... 62.35 |============================================ NVIDIA GeForce GTX TITAN .. 49.09 |=================================== NVIDIA GeForce GTX 780 Ti . 47.72 |================================== AMD Radeon R7 260X ........ 6.46 |===== AMD Radeon R9 270X ........ 11.12 |======== AMD Radeon R9 290 ......... 29.92 |===================== APITest 2014-07-26 Resolution: 1920 x 1080 - Test: UntexturedObjects GLMultiDrawBuffer-NoSDP Frames Per Second > Higher Is Better NVIDIA GeForce GT 740 ..... 107.25 |================================= NVIDIA GeForce GTX 750 .... 116.54 |==================================== NVIDIA GeForce GTX 750 Ti . 116.72 |==================================== NVIDIA GeForce GTX 760 .... 135.23 |========================================== NVIDIA GeForce GTX 770 .... 138.35 |=========================================== NVIDIA GeForce GTX TITAN .. 116.22 |==================================== NVIDIA GeForce GTX 780 Ti . 118.63 |===================================== AMD Radeon R7 260X ........ 6.61 |== AMD Radeon R9 270X ........ 11.11 |=== AMD Radeon R9 290 ......... 28.31 |=========