MSI K8N SLI Platinum O/C issues
I'm trying to overclock my Athlon64 3200+, but I need some help because I seem to be stuck...
My rig:
MSI K8N SLI Platinum
AMD Athlon 64 3200+ 0436MPM
2 x 512 MB PC 4400 G.Skill
2 x 250GB Hitachi 7K250 S-ATA 8 MB @ Raid0
Matrox Millennium II PCI videokaart (wating for X850XT)
NEC ND-3500 dual layer dvd-brander
Onboard soundblast en gigabit nic
TruePower 380 Watt ATX
I got my SLI Platinum yesterday and started to try to overclock my 3200+ on it, but I encounterd some problems. I tried to overclock in in the following manner:
1. Try to obtain the max speed of the CPU.
First I set my mem to the standard timings of 2.5-3-3-7-1T and chose a large mem divider to make sure that my memory is not going to be the bottleneck. Next I increased the Vcore and started up the HTT in small steps of 2/3 mhz at a time to check how high it would go. To my astonishment the max HTT at which it would boot was 225Mhz :( (10X225, which is 2250Mhz). Everything under a HTT of 225 is rock stable, but anything over it doesn't even allow the board to boot...
http://www.silent-simon.nl/hop/forum...36_1_klein.PNG
10x224Mhz (clickable screenshot)
2. Decrease the multiplier, increase the HTT and mem divider set to 1:1
So I thought I just had a bad CPU, but since my mem is garuanteed to run at 275Mhz 2.5-3-3-7-1T by G.Skill, can't I just decrease the multiplier and increase the HTT with the mem divider set to 1:1?
So I set the muliplier to 9x and the mem divider to 1:1 and again gently started to increase the HTT by steps of 2/3 mhz, but now I still got stuck at around 225 HTT.... (9x225= 2025Mhz) :mad:. I tried numerous Vcore and DDR voltages and also tried to set the HT multiplier to 4 and 5, but nothing seems to help. Again anything over a HTT of around 225 doesnt allow the system to boot and everything under is rock stable.
http://www.silent-simon.nl/hop/forum...25_2_klein.PNG
9x225Mhz (clickable screenshot)
Something weird that I noticed is that when I overclock it with Clockgen I can get it to do Pifast and Prime to around 2500Mhz. So the cpu doesn't seem to be the bottleneck. The PCI/SATA also seems to be working fine (according to Clockgen).
Another thing that seems equally as weird to me is that MSI Corecenter and the H/W Monitor in the bios always say that my Vcore is 0.10V to 0.15V lower then I set it to... Like in the screenshots shown above the Vcore is set to 1.67V, but Corecenter (and bios) say that it's running on 1.55V... :confused: The other rails are also showing a little bit of undervolting. Could my PSU perhaps be the cause of it not wanting to boot over a certain HTT? The Antec Truepower 380W is a pretty good PSU and besides I don't have a really heavy loaded system. Especially since my X850XT hasn't arrived yet and I'm using a cheap PCI videocard from 1997. :rolleyes:
Can anybody perhaps give me me some advise on this because I'm lost... (or am I missing something?)
