Triple-CrossfireX with 1 x Radeon HD 6870 X2 and 1 x Radeon HD 6870
Let’s use the advantage of connecting three mid-range GPUs for the first time despite only one bridge. So how do 3 medium-priced hearts perform in practice? Our test candidates for the tests with 2-4 GPUs. 2 x Radeon HD 6870 X2 from Powercolor and a HD 6870 as reference card from AMD:
The total value of the test cards is already around 480 euros. However, this is still almost 100 Euros below the cost of a Geforce GTX 590 and also about 20 Euros below the price of the cheapest, roughly equally fast Radeon HD 6990. Looking at the curves, pure astonishment spreads:
The converted fps (y-axis) for each of the 50 individual frames is shown. We repeated this test with different games and medium frame rates. As long as the average range is above 30 fps, the picture is almost smooth and balanced. These small differences in the delivery time of the single frames are hardly noticeable and do not bother. The course is almost similar to that of a single card. We didn’t really expect that.
Interim summary
Extreme optical advantage for the triple combination over the dual-crossfire, which is also cheaper than the high-end cards with pure dual GPUs! The average frame rate could also be increased by about 20%. Only the power consumption of 420 watts is not bad and is only topped by the Radeon HD 6990 in OC mode.
- 1 - Einführung und Übersicht
- 2 - Wir funktionieren Crossfire und SLI?
- 3 - Mikroruckler - so klein und doch so ärgerlich
- 4 - Stufe 1: CrossfireX mit 2 GPUs
- 5 - Stufe 1: CrossfireX mit 2 GPUs versus SLI
- 6 - Stufe 2: CrossfireX mit 3 GPUs
- 7 - Stufe 3: CrossfireX mit 4 GPUs versus SLI
- 8 - Testsystem und Benchmarkauswahl
- 9 - Benchmarks: 3DMark11 und Sanctuary
- 10 - Benchmarks: DirectX 11 Spiele
- 11 - Benchmarks: DirectX 10 Spiele
- 12 - Benchmarks: DirectX 9 Spiele
- 13 - Leistungsindex und Leistungsaufnahme
- 14 - Zusammenfassung und Fazit
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