May 7th, 2003 Update: Before we go on we should mention a few BIOS issues we ran into that we have been unable to confirm until recent hours. These issues are well documented over the Internet by various users of MSI 875P Neo-FIS2R and MSI 875P Neo-LSR motherboards that ship with BIOS versions 1.1 and 1.2. These problems are two-fold (so far):
1. Overclocking via the BIOS using BIOS version 1.1 or 1.2 with MSI 875P motherboards is broken, you must use MSI's Windows CoreCell overclocking utility bundled with your motherboard.
And
2. High voltage and temperature variation.
The first issue does not seem to affect MSI 875P motherboards using BIOS version 1.0, which we used for this review during 800MHz FSB overclocking. The second issue seems to be related to MSI's new CoreCell technology. CoreCell is very aggressive with how it regulates voltages during idle and heavy loads, and apparently this is what has caused such large variance.
We are currently working with MSI to see if they can remedy these issues immediately, as this is not acceptable for enthusiasts that like to push their motherboard to the limit. We will report our findings in our 875P roundup later this month.