Comparison of Radeon HD 6770 and Radeon HD 5770 Engineering Sample

Attribute	Radeon HD 5770 Engineering Sample ×	Radeon HD 6770 ×
GPU
Release year (year)	2009	2011
Reference card	ATi Radeon HD 5770 850 MHz 1 GB	-
GPU brand	ATI	AMD
GPU name	Juniper	Juniper XT
Market	Desktop	Desktop
Clock speed (MHz)	850	850
Is dual GPU	-	-
Model	Radeon HD 5770 Engineering Sample	Radeon HD 6770
Memory
Memory (MB)	1,024	1,024
Memory bandwidth (GB/s)	76.8	76.8
Memory bus (bit)	128	128
Memory type	GDDR5	GDDR5
Memory clock speed (MHz)	1,200	1,200
Effective memory clock speed (MHz)	4,800	4,800
Noise and power
TDP (W)	108	108
Load power consumption (W)	258	-
Idle power consumption (W)	113	-
Load noise level (dB)	41	-
Idle noise level (dB)	40.4	-
Raw performance
Pixel rate (GPixel/s)	13.6	13.6
Render output processors	16	16
Texture mapping units	40	40
Shading units	800	800
Floating-point performance (GFLOPS)	1,360	1,360
Compute units	10	10
Texture rate (GTexel/s)	34	34
Benchmarks
Crysis 3	40	-
Cloud Gate Factor	-	13.4
Face detection (mPixels/s)	9.96	9.78
T-Rex (GFXBench 3.0)	3353.2	3359.32
Manhattan (GFXBench 3.0)	3507.76	3454.38
Bitcoin mining (mHash/s)	122.81	118.06
Sky Diver Factor	140.24	122.24
Fire Strike Factor	19.74	15.87
Ocean surface simulation (frames/s)	461.22	599.48