Comparison of Radeon HD 8850 and Radeon HD 5770 X2

Attribute	Radeon HD 8850 ×	Radeon HD 5770 X2 ×
GPU
Release year (year)	2013	2010
Reference card	-	ATi Radeon HD 5770 X2 850 MHz 2 GB
GPU brand	AMD	ATI
GPU name	Hainan PRO	Juniper
Market	Desktop	Desktop
Clock speed (MHz)	1,000	850
Is dual GPU	-	+
Model	Radeon HD 8850	Radeon HD 5770 X2
Memory
Memory (MB)	2,048	2,048
Memory bandwidth (GB/s)	153.6	153.6
Memory bus (bit)	256	256
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)	150	-
Raw performance
Pixel rate (GPixel/s)	32	27.2
Render output processors	32	32
Texture mapping units	96	80
Shading units	1,536	1,600
Floating-point performance (GFLOPS)	3,072	2,720
Compute units	24	20
Texture rate (GTexel/s)	96	68