x2 3800 advice

Oliet_No1 · 27 Feb 2007 at 13:24

Currently got mine at 2400 (10 x 240), but for some reason even though it is rock solid at that i cant raise it any further (all or nothing scenario).

Geil Cas5 Value stuff at 800 (667 divider)
Abit KN9S nvidia MCP55S
Coolermaster Extreme HSF - temps at 42 under load
CPU at 1.4v

Its one of those boards thats a nightmare too - resetting bios,finding sata array etc.

ANy ideas

panthro · 28 Feb 2007 at 10:54

Try lowering your memory divider?

Im a bit of a n00b to OC but that seemed to work for me.

Oliet_No1 · 28 Feb 2007 at 11:34

But the problem is that with the divider i am using the memory is only running at its rated speed anyway?

Am happy with it anyway to be honest - but am a tad niggled by the thought that the chip could probably do 2.6?

steve258 · 28 Feb 2007 at 11:53

I assume you have tried increasing the vcore and lowering HTT multiplier??

gt_junkie · 28 Feb 2007 at 13:03

steve258 said:
I assume you have tried increasing the vcore and lowering HTT multiplier??

I agree - try that! HTT multi is 5 as standard and should be set to 4 now - 3 if you plan to clock higher! It multiplies your fsb and should total no more than 1000mhz (200mhz x 5 HTT... 250mhz x 4 HTT). Standard Vcore's about 1.35 for a 3800 so 1.375 or 1.4 would be a good start for overclocking... as long as your load temps don't suffer too much (shouldn't be much more than 52-55 degrees C)!

gt

Oliet_No1 · 28 Feb 2007 at 15:19

Both not an issue (already on 3x), and already on 1.425

Its just the non linear nature of the problems that annoys me.

Heaven Can Wait · 28 Feb 2007 at 20:40

Had the same problem, on a 3200+ though, got to 2390, and no matter what i did, would not go to 2400, nothing to do with temps or anything though.

steve258 · 28 Feb 2007 at 21:11

Oliet_No1 said:
Both not an issue (already on 3x), and already on 1.425

Its just the non linear nature of the problems that annoys me.

Just the way it is me afraid.

Mine will do 2-2.4Ghz at 1.35V, 2.5Ghz at 1.375V and 2.6Ghz at 1.4V but won't even do 2.65Ghz 100% stable at 1.46V (max my mobo will allow).

stigggeh · 28 Feb 2007 at 21:43

is your PCI-E frequency locked ?

Oliet_No1 · 28 Feb 2007 at 21:59

musicman53 · 2 Mar 2007 at 12:05

Hi,
here's my setup.

ABIT AN8 Ultra
AMD 64 X2 3800+ @1.35V giving me 2.4
Thermaltake SilentBoost K8
2X GeIL CL25-3-3DDR 400 PC3200 512MB(1Gig kit)

10x
HTT Multi=4X
HTT(FSB)=240
DDR=333
Ram settings
2.5 3 3 6 1T @1.65v

MoodyB · 2 Mar 2007 at 12:30

Raising the fsb higher than 240 will be overclocking the ram with a 166 divider, so you would possibly need to increase the ram voltage / lower memory timings to get it to go higher.

Put the ram divider at 266 so it's running under spec. Doing this should let you exclude the ram from holding your overclock back.

I've seen it posted by quite a few people on here that the cpu clock speed is much more important than ram speed on A64 systems ( unless you do a lot of encoding / benchmarking ) and it's worth reading this article if you have 10mins :

http://www.xbitlabs.com/articles/cpu/display/athlon64-e3-mem.html