DFI nForce4 LanParty UT Ultra-D + Corsair Value Select RAM -- problem?

[WhipperSnapper]

I'm interested in the DFI nForce4 Ultra (939) LanParty UT Ultra-D board that's going for $115 shipped at NewEgg and that can be modified into SLI (in case I stumble across a 7800 GT clearance which won't happen, but who knows).

Anyway, what happens if I try to put 2 x 512 MB PC 3200 Corsair Value Select RAM (CAS 2.5) into that board? I know that Corsair RAM and the DFI boards don't get along real well, but what would happen? How hard would it be to get it to work properly? Would it post? What's the problem with it anyway?

 

[the cobbler]

be aware that some people have problems with any Corsair RAM, though it's very hit and miss. actually seems that Corsair Value Select is generally more compatible than the XMS line strangely enough.

I recommend first flashing to BigToe's mod bios 704-2BTa via TMOD's Bios Flashing and Utility CD. If you are uncomfortable with the modded bios, go with the 623-3 official beta. also, use the orange slots if possible.

once you flash and do a full 15-minute CMOS clear, the sticks should boot fine (mine did) at SPD timings. Mine were stable basically right off the bat, but using dividers and overclocking makes Corsair VS extremely finicky on the DFIs, be patient. But once you've got timings all worked out, they really perform well for what they are.

use the following settings in bios if your sticks don't boot at first or are unstable @200mhz:

vdimm=2.70v
".03v over"=disabled
should show in bios on reboot as ~2.77v. VS don't seem to like anything over 2.8v.

DRAM configuration:
2.5
enable
3
7
3
14
17
3
3
2
4
auto
twcl=1
enabled
auto
0
level 8/normal 4
level 3
auto
normal
auto
auto
enabled
auto or 8x
auto or 4x
disabled

if you want some tighter timings to tinker with, my VS1GBKIT400 cas 2.5 are good up to ~225mhz with these timings:

2.5
enabled
3
5
3
10
12
2
2
1
2
2048
twcl=1
increase
150
level 8/normal 4
level 3
8ns
any setting, or "fastest" if Max Async and Read Preamble are both set to "auto"
5.0ns
16 clocks
enabled
16x
7x
disabled