The OFFICIAL MSI K8N Neo2-939 tips and tricks guide thread

[Raillex]

ok well what happens when you lower the cpu multi to 7x ?

I didn't try 7X mainly because I'd never be able to run anywhere near the 330 MHz I'd need to reach my 2.69 GHz goal on the CPU.

I would consider myself VERY lucky to have tccd ram that runs that high on such low volts, its not very often you see ram like that.

Yeah, I was pleasantly surprised to see it run so well with so little juice, which is exactly the opposite of my SD. I have a feeling this RAM would absolutely fly if the mobo would only let it.

1)
raise your vdimm.

I did, all the way to 2.85v. The more volts I pump into it, the more errors I get in Memtest. Like I say, the RAM works just fine with 2.65v @ 9X285, so I don't think it's a voltage issue.

2)
lower your cpu multiplier.

I'll check it out and see what happens, but I think it will defeat the purpose since I just can't see this RAM running the 330 MHz it will take to get my SD back to my 2.69 GHz goal.

3)
lower the HTT Multi to 2.5x.

Tried that, no help.

4)
raise your vcore slightly to help stabalize the cpu/memcontroller.

Tried that too, no help.

5)
raise your AGP voltages to 1.6 or 1.65.

Yep, that too.

6)
lower the ram to 183 or 166 depending on whaqt bios your using, then lower the cpu multi far enough that you can raise the HTT high enough to go higher then where you are right now.

I thought about that, but decided against it since I would never be able to run the RAM anywhere near its potential due to my low CPU ceiling.

... alot of AMD64's have pretty flakey Memory controllers and there is no fix.. no matter what you do, it wont get higher but running the memory on a divider can sometimes help but usually not.

It could be the memory controller, but I have a sneaking suspicion it's the Neo2 itself. When I first put this rig together, I had an awful time cold booting at anything over 250 MHz as described in this thread. NFM's 1.36 and 1.8 SD bioses fixed that problem and I haven't had an issue since. My point is that this problem appeared after reaching a nice, round 250 MHz figure, not 249, not 247, not 253, but 250 right on the nose. This, plus the fact that MSI's core center overclocking software also just happened to max out at 250 MHz, made me suspect that a this was an artificial ceiling set by MSI's bios writers when they wrote the 1.9 series bios. I'm seeing the same pattern here with this nice, round 285 MHz RAM limit and since other NF3 boards don't seem to have this "feature" at 285 MHz, something tells me I'm dealing with yet another arbitrary MSI-imposed ceiling.

Sideeffect also has a TCCD bios that has memory settings made up for TCCD ram. look for one of his posts on this page or the last page and he has a link in his sig for his bios's. Grab the 1.B3 TCCD version and give it a try. it might help.

Tried that one too, no help.