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Radeon HD 4870 X2
Manufacturer:AMD
Series:HD 4xxx (Radeon R700)
Codename:R700
Release date:2008. August 12.
Die count:2
Die size:2x 256 mm2
Fab:55 nm
Transistors:2x 956 millions
Bus interface:PCI-E 2.0 x16
Clock rates
Core clock:700 MHz
Memory clock:900 MHz
Effective memory clock (DDR):
http://gamesystemrequirements.com/
3600 MHz
Memory
Memory size:2x 1024 MB
Memory bus type:
http://gamesystemrequirements.com/
GDDR5
Memory bus width:2x 256 bit
Memory bandwidth (maximum):2x 115 GB/s
Core units
Unified shader units:
(Stream processors)
2x 800
Texture mapping units (TMU):
http://gamesystemrequirements.com/
2x 40
Render output units (ROP):2x 16
Compute units:2x 10
Performance
Pixel fillrate:2x 11.2 (GP/s)
Texture fillrate:
http://gamesystemrequirements.com/
2x 28 (GT/s)
Single Precision (peak):2400 GFLOPS
Double Precision (peak):480 GFLOPS
Supported Technologies:
DirectX:10.1OpenGL:3.3
Pixel shader:4.1OpenCL:1.0
Mantle:No
Thermal Design Power (TDP,Max):286 W
Energy efficiency:
- Single Precision / TDP:8.39 GFLOPS/W
- Double Precision / TDP:1.68 GFLOPS/W
Release price (USD):550 USD
Performance/price ratio:4.36 GFLOPS/$
Performance
(Benchmark):
2 / 10
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Recommended CPUs:
Pentium G2030T
Phenom X4 9700
Pentium G632
Pentium G630
Pentium G645T
Pentium G620
Athlon II X3 425
Core 2 Duo E8290
Core 2 Duo E8500
Celeron G1610T
A4-6320
Phenom X4 9350e
Phenom X4 9600 BE
Celeron G550
Phenom X4 9600
Pentium G6951
Athlon X2 370K
Pentium G622
Athlon II X3 420e
Celeron G1620T
A6-6400K
A6-6420K
Athlon II X3 415e
Athlon II X3 425e
Phenom II X3 705e
Phenom II X3 700e
Celeron G540
Core 2 Duo E8400
Phenom X3 8850
Phenom X4 9500
A4-6300
A6-5400B
Core i5-750S
A4-7300
Phenom II X2 565
Athlon II X2 280
Pentium G630T
Phenom II X2 521
A6-6400B
Celeron G530
Celeron G550T
Pentium G6960
A6-5400K
Phenom II X2 B59
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