Comparison of Radeon HD 7870 and Radeon HD 6950

Attribute	Radeon HD 7870 ×	Radeon HD 6950 ×
GPU
Release year (year)	2012	2011
Reference card	-	AMD Radeon HD 6950 800 MHz 2 GB
GPU brand	AMD	AMD
GPU name	Pitcairn XT	Cayman PRO
Market	Desktop	Desktop
Clock speed (MHz)	1,000	880
Is dual GPU	-	-
Model	Radeon HD 7870	Radeon HD 6950
Memory
Memory (MB)	2,048	2,048
Memory bandwidth (GB/s)	153.6	166.4
Memory bus (bit)	256	256
Memory type	GDDR5	GDDR5
Memory clock speed (MHz)	1,200	1,300
Effective memory clock speed (MHz)	4,800	5,200
Noise and power
TDP (W)	175	200
Load power consumption (W)	295	326
Idle power consumption (W)	108	117
Load noise level (dB)	48.8	48.2
Idle noise level (dB)	39.5	42.7
Raw performance
Pixel rate (GPixel/s)	32	28.16
Render output processors	32	32
Texture mapping units	80	88
Shading units	1,280	1,408
Floating-point performance (GFLOPS)	2,560	2,478
Compute units	20	22
Texture rate (GTexel/s)	80	77.44
Benchmarks
Metro: Last Light	-	7.5
Battlefield 3	-	30
Crysis 3	25.8	-
Battlefield 4	43	-
Face detection (mPixels/s)	55.45	17.01
T-Rex (GFXBench 3.0)	3352.76	3358.26
Manhattan (GFXBench 3.0)	3714.8	3714.44
Bitcoin mining (mHash/s)	294.21	251.55
Sky Diver Factor	324.89	242.26
Fire Strike Factor	50.19	35.2