Comparison of Radeon HD 7870 XT and Radeon HD 6950

Attribute	Radeon HD 7870 XT ×	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	Tahiti LE	Cayman PRO
Market	Desktop	Desktop
Clock speed (MHz)	925	880
Turbo clock speed (MHz)	975	-
Is dual GPU	-	-
Model	Radeon HD 7870 XT	Radeon HD 6950
Memory
Memory (MB)	2,048	2,048
Memory bandwidth (GB/s)	192	166.4
Memory bus (bit)	256	256
Memory type	GDDR5	GDDR5
Memory clock speed (MHz)	1,500	1,300
Effective memory clock speed (MHz)	6,000	5,200
Noise and power
TDP (W)	185	200
Load power consumption (W)	-	326
Idle power consumption (W)	-	117
Load noise level (dB)	-	48.2
Idle noise level (dB)	-	42.7
Raw performance
Pixel rate (GPixel/s)	31.2	28.16
Render output processors	32	32
Texture mapping units	96	88
Shading units	1,536	1,408
Floating-point performance (GFLOPS)	2,995	2,478
Compute units	24	22
Texture rate (GTexel/s)	93.6	77.44
Benchmarks
Metro: Last Light	79.5	7.5
Battlefield 3	72	30
Face detection (mPixels/s)	65.4	17.01
T-Rex (GFXBench 3.0)	3350.68	3358.26
Manhattan (GFXBench 3.0)	3705.76	3714.44
Bitcoin mining (mHash/s)	345.79	251.55
Sky Diver Factor	314	242.26
Fire Strike Factor	47.56	35.2