Comparison of Radeon HD 7950 and Radeon R9 280

Attribute	Radeon HD 7950 ×	Radeon R9 280 ×
GPU
Release year (year)	2012	2014
GPU brand	AMD	AMD
GPU name	Tahiti PRO	Tahiti
Market	Desktop	Desktop
Clock speed (MHz)	800	827
Turbo clock speed (MHz)	-	933
Is dual GPU	-	-
Model	Radeon HD 7950	Radeon R9 280
Memory
Memory (MB)	3,072	3,072
Memory bandwidth (GB/s)	240	240
Memory bus (bit)	384	384
Memory type	GDDR5	GDDR5
Memory clock speed (MHz)	1,250	1,250
Effective memory clock speed (MHz)	5,000	5,000
Noise and power
TDP (W)	200	200
Load power consumption (W)	321	-
Idle power consumption (W)	112	-
Load noise level (dB)	53.1	-
Idle noise level (dB)	40.7	-
Raw performance
Pixel rate (GPixel/s)	25.6	29.86
Render output processors	32	32
Texture mapping units	112	112
Shading units	1,792	1,792
Floating-point performance (GFLOPS)	2,867	3,344
Compute units	28	28
Texture rate (GTexel/s)	89.6	104.5
Benchmarks
Crysis 3	45	-
Dirt3	-	92
Battlefield 4	33.5	-
Face detection (mPixels/s)	77.81	80.47
T-Rex (GFXBench 3.0)	3359.66	3356.46
Manhattan (GFXBench 3.0)	3712.14	3713.26
Bitcoin mining (mHash/s)	382.11	365.38
Sky Diver Factor	355.06	336.33
Fire Strike Factor	57.91	55.14
Ocean surface simulation (frames/s)	-	1687.03