Comparison of Radeon HD 7850 and Sapphire Radeon HD 7770

Attribute	Radeon HD 7850 ×	Sapphire Radeon HD 7770 ×
GPU
Release year (year)	2012	2012
Reference card	-	AMD Radeon HD 7770 GHz Edition 1 GHz 1 GB
GPU brand	AMD	AMD
GPU name	Pitcairn PRO	Cape Verde XT
Market	Desktop	Desktop
Clock speed (MHz)	860	1,150
Is dual GPU	-	-
Model	Radeon HD 7850	Sapphire Radeon HD 7770
Memory
Memory (MB)	2,048	1,024
Memory bandwidth (GB/s)	153.6	80
Memory bus (bit)	256	128
Memory type	GDDR5	GDDR5
Memory clock speed (MHz)	1,200	1,250
Effective memory clock speed (MHz)	4,800	5,000
Noise and power
TDP (W)	130	80
Load power consumption (W)	271	242
Idle power consumption (W)	107	106
Load noise level (dB)	46.7	41.4
Idle noise level (dB)	41.5	40
Raw performance
Pixel rate (GPixel/s)	27.52	18.4
Render output processors	32	16
Texture mapping units	64	40
Shading units	1,024	640
Floating-point performance (GFLOPS)	1,761	1,472
Compute units	16	10
Texture rate (GTexel/s)	55	46
Benchmarks
Crysis 3	35	48
Battlefield 4	-	45
Face detection (mPixels/s)	47.04	32.42
T-Rex (GFXBench 3.0)	3355.2	3355.14
Manhattan (GFXBench 3.0)	3466.99	3701.57
Bitcoin mining (mHash/s)	249.48	153.66
Sky Diver Factor	293.45	221.64
Thief	28	-
Fire Strike Factor	43.94	30.64