Comparison of NVIDIA Quadro K4000 and AMD Radeon HD

Attribute	AMD Radeon HD - FirePro D500 Compute Engine ×	NVIDIA Quadro K4000 ×
GPU
Release year (year)	2014	2013
GPU brand	AMD	Nvidia
GPU name	Tahiti	GK106
Clock speed (MHz)	725	810
Is dual GPU	-	-
Model	AMD Radeon HD - FirePro D500 Compute Engine	NVIDIA Quadro K4000
Memory
Memory (MB)	3,072	3,072
Memory bandwidth (GB/s)	243.8	134.8
Memory bus (bit)	384	192
Memory type	GDDR5	GDDR5
Memory clock speed (MHz)	1,270	1,404
Effective memory clock speed (MHz)	5,080	5,616
Noise and power
TDP (W)	274	80
Raw performance
Pixel rate (GPixel/s)	23.2	12.96
Render output processors	32	24
Texture mapping units	96	64
Shading units	1,536	768
Floating-point performance (GFLOPS)	2,227	1,244
Compute units	24	-
Texture rate (GTexel/s)	69.6	51.8
Benchmarks
Particle simulation (mInteraction/s)	423.04	234.15
T-Rex (Compubench 1.5) (frames/s)	4.57	1.9
Video composition (frames/s)	70.94	34.28
Face detection (mPixels/s)	47.2	18.41
T-Rex (GFXBench 3.0)	3349.52	3109.95
Manhattan (GFXBench 3.0)	3632.24	3712.8
Bitcoin mining (mHash/s)	259.37	61.83
Ocean surface simulation (frames/s)	1045.53	659.32