Comparison of Radeon HD 7950 and Radeon HD 7870

Attribute	Radeon HD 7950 ×	Radeon HD 7870 ×
GPU
Release year (year)	2012	2012
GPU brand	AMD	AMD
GPU name	Tahiti PRO	Pitcairn XT
Market	Desktop	Desktop
Clock speed (MHz)	800	1,000
Is dual GPU	-	-
Model	Radeon HD 7950	Radeon HD 7870
Memory
Memory (MB)	3,072	2,048
Memory bandwidth (GB/s)	240	153.6
Memory bus (bit)	384	256
Memory type	GDDR5	GDDR5
Memory clock speed (MHz)	1,250	1,200
Effective memory clock speed (MHz)	5,000	4,800
Noise and power
TDP (W)	200	175
Load power consumption (W)	321	295
Idle power consumption (W)	112	108
Load noise level (dB)	53.1	48.8
Idle noise level (dB)	40.7	39.5
Raw performance
Pixel rate (GPixel/s)	25.6	32
Render output processors	32	32
Texture mapping units	112	80
Shading units	1,792	1,280
Floating-point performance (GFLOPS)	2,867	2,560
Compute units	28	20
Texture rate (GTexel/s)	89.6	80
Benchmarks
Crysis 3	45	25.8
Battlefield 4	33.5	43
Face detection (mPixels/s)	77.81	55.45
T-Rex (GFXBench 3.0)	3359.66	3352.76
Manhattan (GFXBench 3.0)	3712.14	3714.8
Bitcoin mining (mHash/s)	382.11	294.21
Sky Diver Factor	355.06	324.89
Fire Strike Factor	57.91	50.19