Monday, September 8th 2008
HD 4670 Crossfire Outperforms HD 4850
Pre-release 3DMark tests show that two Radeon HD 4670 graphics cards in Crossfire multi-GPU mode outperforms a single Radeon HD 4850 card. The HD 4670 cards score just a little above the HD 4850 in three tests that include 3DMark06 in Shader Model 2.0 mode, the same benchmark in SM 3.0 mode and 3DMark Vantage.
The cards scored 54xx 3DMarks in SM2.0 and 65xx 3DMarks in SM3.0 tests, a 4850 on the same test-bed produced 49xx and 57xx respectively. With 3DMark Vantage, the Crossfire setup churned out 7300, with the single HD 4850 just 100 points behind at 7200. These scores can be attributed to the raw texturing power the HD 4670 cards have despite memory bandwidth advantage staying with the single HD 4850. Indications are that the HD 4650 won't scale as well since (at least reference models) lack hardware Crossfire.
The cards scored 54xx 3DMarks in SM2.0 and 65xx 3DMarks in SM3.0 tests, a 4850 on the same test-bed produced 49xx and 57xx respectively. With 3DMark Vantage, the Crossfire setup churned out 7300, with the single HD 4850 just 100 points behind at 7200. These scores can be attributed to the raw texturing power the HD 4670 cards have despite memory bandwidth advantage staying with the single HD 4850. Indications are that the HD 4650 won't scale as well since (at least reference models) lack hardware Crossfire.