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/ Comparison of Radeon HD 6990 and Radeon HD 7990
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Comparison of Radeon HD 6990 and Radeon HD 7990
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Attribute
Radeon HD 6990
×
Radeon HD 7990
×
GPU
Release year (year)
2011
2013
Reference card
AMD Radeon HD 6990 830 MHz 4 GB
AMD Radeon HD 7990 950 MHz 6 GB
GPU brand
AMD
AMD
GPU name
Antilles
Malta
Market
Desktop
Desktop
Clock speed (MHz)
830
950
Turbo clock speed (MHz)
-
1,000
Is dual GPU
+
+
Model
Radeon HD 6990
Radeon HD 7990
Memory
Memory (MB)
4,096
6,144
Memory bandwidth (GB/s)
320
576
Memory bus (bit)
512
768
Memory type
GDDR5
GDDR5
Memory clock speed (MHz)
1,250
1,500
Effective memory clock speed (MHz)
5,000
6,000
Noise and power
TDP (W)
375
375
Load power consumption (W)
545
573
Idle power consumption (W)
140
135
Load noise level (dB)
66
60
Idle noise level (dB)
45.5
43
Raw performance
Pixel rate (GPixel/s)
53.12
64
1
↑
Render output processors
64
64
Texture mapping units
192
256
Shading units
3,072
4,096
Floating-point performance (GFLOPS)
5,100
8,192
Compute units
48
64
Texture rate (GTexel/s)
159.4
256
Benchmarks
Cloud Gate Factor
21.43
23
Face detection (mPixels/s)
17.28
90.43
T-Rex (GFXBench 3.0)
3356.28
3356.38
Manhattan (GFXBench 3.0)
3713.7
3716.14
Bitcoin mining (mHash/s)
265.3
458.53
Sky Diver Factor
340.31
393.8
Fire Strike Factor
45.35
75.52
Ocean surface simulation (frames/s)
840.45
1833.02
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