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/ Comparison of Radeon HD 7870 and Radeon R9 270
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Comparison of Radeon HD 7870 and Radeon R9 270
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Attribute
Radeon R9 270
×
Radeon HD 7870
×
GPU
Release year (year)
2013
2012
GPU brand
AMD
AMD
GPU name
Curacao
Pitcairn XT
Market
Desktop
Desktop
Clock speed (MHz)
900
1,000
Turbo clock speed (MHz)
925
-
Is dual GPU
-
-
Model
Radeon R9 270
Radeon HD 7870
Memory
Memory (MB)
2,048
2,048
Memory bandwidth (GB/s)
179.2
153.6
Memory bus (bit)
256
256
Memory type
GDDR5
GDDR5
Memory clock speed (MHz)
1,400
1,200
Effective memory clock speed (MHz)
5,600
4,800
Noise and power
TDP (W)
150
175
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)
29.6
32
Render output processors
32
32
Texture mapping units
80
80
Shading units
1,280
1,280
Floating-point performance (GFLOPS)
2,368
2,560
Compute units
20
20
Texture rate (GTexel/s)
74
80
Benchmarks
Crysis 3
74
25.8
Battlefield 4
65
43
Face detection (mPixels/s)
57.24
55.45
T-Rex (GFXBench 3.0)
3359.76
3352.76
Manhattan (GFXBench 3.0)
3717.7
3714.8
Bitcoin mining (mHash/s)
251.26
294.21
Sky Diver Factor
312.65
324.89
1
↑
Fire Strike Factor
49.6
50.19
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