Comparison of Sapphire Radeon HD 7770 and Radeon HD 5770 Engineering Sample

Attribute	Sapphire Radeon HD 7770 ×	Radeon HD 5770 Engineering Sample ×
GPU
Release year (year)	2012	2009
Reference card	AMD Radeon HD 7770 GHz Edition 1 GHz 1 GB	ATi Radeon HD 5770 850 MHz 1 GB
GPU brand	AMD	ATI
GPU name	Cape Verde XT	Juniper
Market	Desktop	Desktop
Clock speed (MHz)	1,150	850
Is dual GPU	-	-
Model	Sapphire Radeon HD 7770	Radeon HD 5770 Engineering Sample
Memory
Memory (MB)	1,024	1,024
Memory bandwidth (GB/s)	80	76.8
Memory bus (bit)	128	128
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)	80	108
Load power consumption (W)	242	258
Idle power consumption (W)	106	113
Load noise level (dB)	41.4	41
Idle noise level (dB)	40	40.4
Raw performance
Pixel rate (GPixel/s)	18.4	13.6
Render output processors	16	16
Texture mapping units	40	40
Shading units	640	800
Floating-point performance (GFLOPS)	1,472	1,360
Compute units	10	10
Texture rate (GTexel/s)	46	34
Benchmarks
Crysis 3	48	40
Battlefield 4	45	-
Face detection (mPixels/s)	32.42	9.96
T-Rex (GFXBench 3.0)	3355.14	3353.2
Manhattan (GFXBench 3.0)	3701.57	3507.76
Bitcoin mining (mHash/s)	153.66	122.81
Sky Diver Factor	221.64	140.24
Fire Strike Factor	30.64	19.74
Ocean surface simulation (frames/s)	-	461.22