Comparison of Mobility Radeon HD 3850 X2 and Radeon HD 6830M

Attribute	Radeon HD 6830M ×	Mobility Radeon HD 3850 X2 ×
GPU
Release year (year)	2011	2008
GPU brand	AMD	ATI
GPU name	Granville	M88
Market	Laptop	Laptop
Clock speed (MHz)	575	580
Is dual GPU	-	+
Model	Radeon HD 6830M	Mobility Radeon HD 3850 X2
Memory
Memory (MB)	1,024	1,024
Memory bandwidth (GB/s)	25.6	96
Memory bus (bit)	128	512
Memory type	DDR3	GDDR3
Memory clock speed (MHz)	800	750
Effective memory clock speed (MHz)	1,600	1,500
Noise and power
TDP (W)	39	70
Raw performance
Pixel rate (GPixel/s)	9.2	18.56
Render output processors	16	32
Texture mapping units	40	32
Shading units	800	640
Floating-point performance (GFLOPS)	920	742
Compute units	10	8
Texture rate (GTexel/s)	23	18.56