I've just built an i7 PC based on the Gigabyte EX58-UD5 motherboard and I'm finding that in my video capture applications, timing is inaccurate compared to my previous QX6850/P45 combination.

I'm wondering whether this is unique to my motherboard or a problem with i7 and X58 in general?

There's a simple test that I hope those with X58 boards can help me with.

1. Download VirtualDub from www.virtualdub.org - it's spyware free, doesn't require installation etc... just unzip into a standalone folder
2. Run VirtualDub.exe, go to File -> Capture AVI
3. Under Devices, select Screen Capture, and at the bottom right, next to the frame rate, select 48.00KHz, 16-bit, Stereo
4. Press F7 to do a test capture
5. Make a note of the average rate and relative rate under audio on the right and post it here

Average rate and relative rate should be at 48000Hz, 48050Hz tops. On my Gigabyte board I'm getting 48470Hz. That 1% variance ruins any attempt at precision video capture. Can any one - specifically ASUS users - try the test?