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Radeon HD 7990 - 1
Radeon HD 7970 - 1
Manufacturer:
AMD
AMD
Series:
HD 7xxx (Southern Islands)
HD 7xxx (Southern Islands)
Codename:
Malta
Tahiti XT
Release date:
2013. April 23.
2012. January 08.
Die count:
2
http://gamesystemrequirements.com/
1
http://gamesystemrequirements.com/
Die size:
2x 352 mm2
352 mm2
Fab:
28 nm
28 nm
Transistors:
2x 4313 millions
4313 millions
Bus interface:
PCI-E 3.0 x16
PCI-E 3.0 x16
Clock rates
Core clock:
950 MHz
925 MHz
Core clock (Boost):
1000 MHz
Memory clock:
1500 MHz
1375 MHz
Effective memory clock (DDR):
http://gamesystemrequirements.com/
12000 MHz
http://gamesystemrequirements.com/
11000 MHz
Memory
Memory size:
2x 3072 MB
6144, 3072 MB
Memory bus type:
http://gamesystemrequirements.com/
GDDR5
http://gamesystemrequirements.com/
GDDR5
Memory bus width:
2x 384 bit
384 bit
Memory bandwidth (maximum):
2x 288 GB/s
264 GB/s
Core units
Unified shader units:
2x 2048
2048
Texture mapping units (TMU):
http://gamesystemrequirements.com/
2x 128
http://gamesystemrequirements.com/
128
Render output units (ROP):
2x 32
32
Compute units:
2x 32
32
Performance
Pixel fillrate:
2x 32 (GP/s)
29.6 (GP/s)
Texture fillrate:
http://gamesystemrequirements.com/
2x 128 (GT/s)
http://gamesystemrequirements.com/
118.4 (GT/s)
Single Precision (peak):
8200 GFLOPS
3788.8 GFLOPS
Double Precision (peak):
1894 GFLOPS
947.2 GFLOPS
Supported Technologies:
DirectX:
12
12
Pixel shader:
http://gamesystemrequirements.com/
5.0
http://gamesystemrequirements.com/
5.0
OpenGL:
4.4
4.4
OpenCL:
1.2
1.2
AMD Eyefinity, AMD CrossFire™
AMD Eyefinity, AMD CrossFire™
Thermal Design Power (TDP,Max):
375 W
250 W
Energy efficiency:
- Single Precision / TDP:
21.87 GFLOPS/W
15.16 GFLOPS/W
- Double Precision / TDP:
5.05 GFLOPS/W
3.79 GFLOPS/W
Release price (USD):
1000 USD
550 USD
Performance/price ratio:
8.2 GFLOPS/$
6.89 GFLOPS/$
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