Comparison of Radeon HD 7870 and AMD Radeon HD

Attribute	Radeon HD 7870 ×	AMD Radeon HD - FirePro D300 Compute Engine ×
GPU
Release year (year)	2012	2014
GPU brand	AMD	AMD
GPU name	Pitcairn XT	Pitcairn
Market	Desktop	-
Clock speed (MHz)	1,000	850
Is dual GPU	-	-
Model	Radeon HD 7870	AMD Radeon HD - FirePro D300 Compute Engine
Memory
Memory (MB)	2,048	2,048
Memory bandwidth (GB/s)	153.6	162.6
Memory bus (bit)	256	256
Memory type	GDDR5	GDDR5
Memory clock speed (MHz)	1,200	1,270
Effective memory clock speed (MHz)	4,800	5,080
Noise and power
TDP (W)	175	150
Load power consumption (W)	295	-
Idle power consumption (W)	108	-
Load noise level (dB)	48.8	-
Idle noise level (dB)	39.5	-
Raw performance
Pixel rate (GPixel/s)	32	27.2
Render output processors	32	32
Texture mapping units	80	80
Shading units	1,280	1,280
Floating-point performance (GFLOPS)	2,560	2,176
Compute units	20	20
Texture rate (GTexel/s)	80	68
Benchmarks
Particle simulation (mInteraction/s)	-	307
T-Rex (Compubench 1.5) (frames/s)	-	1
Video composition (frames/s)	-	70.69
Crysis 3	25.8	-
Battlefield 4	43	-
Face detection (mPixels/s)	55.45	48.05
T-Rex (GFXBench 3.0)	3352.76	3351.76
Manhattan (GFXBench 3.0)	3714.8	3712.58
Bitcoin mining (mHash/s)	294.21	242.18
Sky Diver Factor	324.89	-
Fire Strike Factor	50.19	-
Ocean surface simulation (frames/s)	-	1192.55