PCIe 2.0 vrs 1.0 Benchmarks?

[sswilson]

Has anybody come across a reputable benchmark comparison between the two yet?

I've seen quite a few "this is what the tech is" reviews, and most of those suggest that there will be no benefit to PCIe 2.0 over 1.0 with current vid cards, but I've yet to see actual #s.

[mr_plow_king]

Did you check that article on Tom's Hardware ?

Crossfire Meets PCI Express 2.0 | Tom's Hardware

[sswilson]

Nope, hadn't seen that. Thanks for the link.

1 - 2% increase in FPS..... not only is that statistically negligable, it could also be suggested that it would come from an improved chipset without any benefit coming from the PCIe 2.0 slot......

[3oh6]

Originally Posted by sswilson

1 - 2% increase in FPS..... not only is that statistically negligable, it could also be suggested that it would come from an improved chipset without any benefit coming from the PCIe 2.0 slot......

exactly. i did some benching the other night on the P5K3-Dlx with both an 8800GTS 512 and an 3870X2 and there was nothing about my scores that would suggest i was on a PCI-E 1.0 motherboard compared to any of the scores on HWBot with similar CPU clocks. heck, my scores were above average if anything. obviously not a direct head to head but from my 'seat of the pants' feel based on 3DMark scores, there is no difference.

if i get a chance i will do a direct comparison on the P5K3-Dlx/Maximus Extreme but my plate is pretty full so i doubt it will ever happen.

[sswilson]

Thanks for the hands on testimony.

Head to head comparisons are obviously going to be impossible as the chipset performance will vary (unless there's a board out there with a bios setting to revert to PCIe 1.0a for compatibility) but it's good to see at least an attempt to demonstrate the differences.

IMO, considering the differences between chipset performance, I wouldn't consider anything less than 10 - 15% improvements to be statistically significant.

The only place I'm thinking PCIe 2.0 might provide an improvement with current tech would be pumping HDMI out to a TV. I'd think that the extra bandwith might show a performance boost although I'm not even convinced on that.