Last Updated on Sunday, 27 January 2008 21:48 Sunday, 27 January 2008 20:08
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Radeon HD3870X2 |
Radeon HD3870 |
Radeon HD2900XT |
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Core Code |
R680 |
RV670 |
R600 |
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Process |
55nm |
55nm |
80nm |
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Core Transistors |
1,300,000,000 |
666,000,000 |
700,000,000 |
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Clock Frequency |
825MHz |
775MHz |
740MHz |
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Memory |
GDDR3 |
GDDR4 |
GDDR3 |
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Memory Interface |
256-bit X2 |
256-bit |
256-bit |
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Total Memory |
512MB X2 |
512MB |
256MB/512MB |
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Memory Frequency |
1800MHz |
2252MHz |
740MHz |
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Texture Units |
32 |
16 |
16 |
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Render Back-Ends |
32 |
16 |
16 |
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Stream Processors |
640 |
320 |
320 |
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Processing Power |
1 Teraflop |
497Gigaflops |
495Gigaflops |
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Shader model |
4.1 |
4.1 |
4 |
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DirectX |
10.1 |
10.1 |
10.0 |
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Multi-GPU |
CrossfireX |
CrossfireX |
Crossfire |
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UVD(HD) |
Yes |
Yes |
No |
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ATi PowerPlay |
Yes |
Yes |
No |
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