Comparison of Radeon HD 8490 and Radeon HD 7650A

Attribute	Radeon HD 7650A ×	Radeon HD 8490 ×
GPU
Release year (year)	2012	2013
GPU brand	AMD	AMD
GPU name	Onega	Caicos XTX
Market	Laptop	Desktop
Clock speed (MHz)	600	875
Is dual GPU	-	-
Model	Radeon HD 7650A	Radeon HD 8490
Memory
Memory (MB)	1,024	1,024
Memory bandwidth (GB/s)	28.8	14.4
Memory bus (bit)	128	64
Memory type	DDR3	DDR3
Memory clock speed (MHz)	900	900
Effective memory clock speed (MHz)	1,800	1,800
Noise and power
TDP (W)	33	35
Raw performance
Pixel rate (GPixel/s)	4.8	3.5
Render output processors	8	4
Texture mapping units	24	8
Shading units	480	160
Floating-point performance (GFLOPS)	576	280
Compute units	6	2
Texture rate (GTexel/s)	14.4	7
Benchmarks
Particle simulation (mInteraction/s)	90.53	-
T-Rex (Compubench 1.5) (frames/s)	0.43	-
Video composition (frames/s)	13.3	-
Cloud Gate Factor	-	6.58
Face detection (mPixels/s)	4.43	2.02
T-Rex (GFXBench 3.0)	1342.64	1776.24
Manhattan (GFXBench 3.0)	945.04	1074.06
Bitcoin mining (mHash/s)	53.84	13.08
Sky Diver Factor	-	36.55
Fire Strike Factor	-	4.53
Ocean surface simulation (frames/s)	259.83	126.59