Comparison of Radeon HD 5770 Engineering Sample and Radeon R7 250E

Attribute	Radeon HD 5770 Engineering Sample ×	Radeon R7 250E ×
GPU
Release year (year)	2009	2013
Reference card	ATi Radeon HD 5770 850 MHz 1 GB	AMD Radeon R7 250E 800 MHz 1 GB
GPU brand	ATI	AMD
GPU name	Juniper	Cape Verde
Market	Desktop	Desktop
Clock speed (MHz)	850	800
Is dual GPU	-	-
Model	Radeon HD 5770 Engineering Sample	Radeon R7 250E
Memory
Memory (MB)	1,024	1,024
Memory bandwidth (GB/s)	76.8	72
Memory bus (bit)	128	128
Memory type	GDDR5	GDDR5
Memory clock speed (MHz)	1,200	1,125
Effective memory clock speed (MHz)	4,800	4,500
Noise and power
TDP (W)	108	55
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	12.8
Render output processors	16	16
Texture mapping units	40	32
Shading units	800	512
Floating-point performance (GFLOPS)	1,360	819
Compute units	10	8
Texture rate (GTexel/s)	34	25.6
Benchmarks
Crysis 3	40	-
Cloud Gate Factor	-	12.88
Face detection (mPixels/s)	9.96	21.57
T-Rex (GFXBench 3.0)	3353.2	3357.64
Manhattan (GFXBench 3.0)	3507.76	3602.72
Bitcoin mining (mHash/s)	122.81	98.3
Sky Diver Factor	140.24	167.17
Fire Strike Factor	19.74	16.82
Ocean surface simulation (frames/s)	461.22	582.96