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ECS PF22 Extreme (Intel 955X Express + CrossFire)

By Zachary Chan - 2 Feb 2006

Results - CrossFire Testing

Results - CrossFire Testing

Unlike our previous CrossFire motherboard operational tests, the ECS PF22 Extreme and Gigabyte GA-G1975X are actually closely comparable. Both motherboards are tested on an Intel Pentium 4 Extreme Edition 3.46GHz processor and an ATI Radeon X850 XT CrossFire configuration. Since our previous reviews have shows chipset level performance differences to be negligible between the 955X and 975X Express chipsets, we can more accurately gauge the impact of using an imbalanced PCIe x16/x4 setup from the PF22 Extreme to that of a flexible PCI Express chipset running PCIe x8/x8 for CrossFire (Gigabtye GA-G1975X).

Looking at our scores, the PF22 Extreme trails behind the Gigabyte GA-G1975X roughly 2-3% in all resolutions, whether AA and AF are enabled or not. The lowered performance is to be expected, but these numbers are actually very promising.

Using CrossFire, users can expect performance increases of around 30-64% from 1024x768 to 1600x1200 and achieve a 50-79% boost in the same resolutions with AA and AF enabled. However, if you look at CrossFire scalability though, the PF22 Extreme doesn't seem to provide as high a benefit as the Gigabyte GA-G1975X, which managed up to 70% and 82% gains in the same test categories respectively.

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