Comparison of Radeon R9 M270X and AMD Radeon HD

Attribute	Radeon R9 M270X ×	AMD Radeon HD - FirePro D300 Compute Engine ×
GPU
Release year (year)	2015	2014
Reference card	AMD Radeon R9 M270X 725 MHz 2 GB	-
GPU brand	AMD	AMD
GPU name	Saturn	Pitcairn
Market	Laptop	-
Clock speed (MHz)	900	850
Turbo clock speed (MHz)	1,000	-
Is dual GPU	-	-
Model	Radeon R9 M270X	AMD Radeon HD - FirePro D300 Compute Engine
Memory
Memory (MB)	2,048	2,048
Memory bandwidth (GB/s)	88	162.6
Memory bus (bit)	128	256
Memory type	GDDR5	GDDR5
Memory clock speed (MHz)	1,375	1,270
Effective memory clock speed (MHz)	5,500	5,080
Noise and power
TDP (W)	-	150
Raw performance
Pixel rate (GPixel/s)	16	27.2
Render output processors	16	32
Texture mapping units	48	80
Shading units	768	1,280
Floating-point performance (GFLOPS)	1,536	2,176
Compute units	12	20
Texture rate (GTexel/s)	48	68
Benchmarks
Particle simulation (mInteraction/s)	377.8	307
T-Rex (Compubench 1.5) (frames/s)	6.37	1
Video composition (frames/s)	85.21	70.69
Face detection (mPixels/s)	63.98	48.05
T-Rex (GFXBench 3.0)	3361.82	3351.76
Manhattan (GFXBench 3.0)	3717.76	3712.58
Bitcoin mining (mHash/s)	314.57	242.18
Ocean surface simulation (frames/s)	1314.72	1192.55