Comparison of Radeon HD 5770 X2 and Radeon HD 7970

Attribute	Radeon HD 7970 ×	Radeon HD 5770 X2 ×
GPU
Release year (year)	2011	2010
Reference card	-	ATi Radeon HD 5770 X2 850 MHz 2 GB
GPU brand	AMD	ATI
GPU name	Tahiti XT	Juniper
Market	Desktop	Desktop
Clock speed (MHz)	925	850
Is dual GPU	-	+
Model	Radeon HD 7970	Radeon HD 5770 X2
Memory
Memory (MB)	3,072	2,048
Memory bandwidth (GB/s)	264	153.6
Memory bus (bit)	384	256
Memory type	GDDR5	GDDR5
Memory clock speed (MHz)	1,375	1,200
Effective memory clock speed (MHz)	5,500	4,800
Noise and power
TDP (W)	250	-
Load power consumption (W)	391	-
Idle power consumption (W)	113	-
Load noise level (dB)	55.2	-
Idle noise level (dB)	40.2	-
Raw performance
Pixel rate (GPixel/s)	29.6	27.2
Render output processors	32	32
Texture mapping units	128	80
Shading units	2,048	1,600
Floating-point performance (GFLOPS)	3,789	2,720
Compute units	32	20
Texture rate (GTexel/s)	118.4	68
Benchmarks
Bioshock Infinite	78	-
Hitman: Absolution	73	-
Cloud Gate Factor	21.46	-
Face detection (mPixels/s)	49.05	-
Bitcoin mining (mHash/s)	447.28	-
Sky Diver Factor	380.04	-
Fire Strike Factor	62.9	-
Ocean surface simulation (frames/s)	261.64	-