Comparison of Radeon HD 8870 and Radeon HD 5870 Eyefinity 6

Attribute	Radeon HD 8870 ×	Radeon HD 5870 Eyefinity 6 ×
GPU
Release year (year)	2013	2010
GPU brand	AMD	ATI
GPU name	Hainan XT	Cypress
Market	Desktop	Desktop
Clock speed (MHz)	925	850
Turbo clock speed (MHz)	975	-
Is dual GPU	-	-
Model	Radeon HD 8870	Radeon HD 5870 Eyefinity 6
Memory
Memory (MB)	2,048	2,048
Memory bandwidth (GB/s)	192	153.6
Memory bus (bit)	256	256
Memory type	GDDR5	GDDR5
Memory clock speed (MHz)	1,500	1,200
Effective memory clock speed (MHz)	6,000	4,800
Noise and power
TDP (W)	185	228
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