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/ Comparison of AMD Radeon HD 7970 GHz Edition and Radeon HD 6990
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Comparison of AMD Radeon HD 7970 GHz Edition and Radeon HD 6990
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Attribute
AMD Radeon HD 7970 GHz Edition
×
Radeon HD 6990
×
GPU
Release year (year)
2012
2011
Reference card
AMD Radeon HD 7970 925 MHz 3 GB
AMD Radeon HD 6990 830 MHz 4 GB
GPU brand
AMD
AMD
GPU name
Tahiti XT2
Antilles
Market
Desktop
Desktop
Clock speed (MHz)
1,000
830
Turbo clock speed (MHz)
1,050
-
Is dual GPU
-
+
Model
AMD Radeon HD 7970 GHz Edition
Radeon HD 6990
Memory
Memory (MB)
3,072
4,096
Memory bandwidth (GB/s)
288
320
Memory bus (bit)
384
512
Memory type
GDDR5
GDDR5
Memory clock speed (MHz)
1,500
1,250
Effective memory clock speed (MHz)
6,000
5,000
Noise and power
TDP (W)
300
375
Load power consumption (W)
360
545
Idle power consumption (W)
112
140
Load noise level (dB)
53.1
66
Idle noise level (dB)
40.2
45.5
Raw performance
Pixel rate (GPixel/s)
33.6
53.12
Render output processors
32
64
Texture mapping units
128
192
Shading units
2,048
3,072
Floating-point performance (GFLOPS)
4,301
5,100
Compute units
32
48
Texture rate (GTexel/s)
134.4
159.4
Benchmarks
Crysis 3
28.3
-
1
↓
Bioshock Infinite
78
-
Cloud Gate Factor
-
21.43
Face detection (mPixels/s)
94.02
17.28
T-Rex (GFXBench 3.0)
2798.85
3356.28
Manhattan (GFXBench 3.0)
2984.22
3713.7
Bitcoin mining (mHash/s)
487.62
265.3
Sky Diver Factor
380.04
340.31
Fire Strike Factor
62.9
45.35
Ocean surface simulation (frames/s)
-
840.45
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