My friend has problems with OC'ing his X2 3800+

Dialamo

Dialamo

New Member
My friend is trying to overclock his X2 3800+. He succeded to getting an overclock of 2.2Ghz just by raising the bus speed by 20MHz. (All in one shot, which I don't think was the best idea.) It was stable for benchmarking, but when he runs Super Pi, as soon as he finishes doing a calculation of 32M, the computer freezes and has to be rebooted. Now he brought the processor back to stock values, and Super Pi did not crash while doing32M and stayed perfectly stable.

Does this mean that the overclock is not stable? What does my friend need to do? I showed my friend OC'ing 101, but he did not really understand it too well and prefers it if someone experienced with OC'ing here would explain him what to do.

My friends system specs:
CPU:AMD X2 3800+
Motherboard:ASUS A8N-SLI
GPU:Leadtek 7600GT
RAM:OCZ Value RAM 1024x2 (Dual Channel) DDR 400MHz (2.5-4-4-8)
 
i would step the voltage up a notch or two. Bear in mind that the HTT speed should be backed off a bit by reducing the multiplier to 4x or maybe lower when the bus speed is high enough
 
Hairy_Lee said:
i would step the voltage up a notch or two. Bear in mind that the HTT speed should be backed off a bit by reducing the multiplier to 4x or maybe lower when the bus speed is high enough
Click to expand...
Very true, normally though you can OC it much farther before you need to do that. But it all depends on his hardware.
 
use a ram divider and a 4x multiplier for the hypertransport. then raise fsb to 240 and it should run fine.
ive got mine running as follows :D
fsb = 266
cpu multi = 9 (2394mhz reports 2.4ghz)
ddr ratio = 1:1 (ddr532 3-3-3-6)
hypertransport = 3x (798mhz... not that it matters)

most peoples ram can't handle those settings though. im very happy with how well my ram is doing... cant wait for my 7900gtx :D
ive actually had my hypertransport at 1.2ghz before but that was unstable... it was accidental lol but windows did boot!

the settings i suggest he runs his system at would be these:
fsb at 240
hypertransport multi at 4x
cpu at default multi
ddr at 166mhz divider (this is like running ddr400 at its default settings)
this ought to be perfectly stable. if not then lower fsb to 238 and test that.
you can test if its stable using dual prime95.
 
Last edited:
fade2green514 said:
use a ram divider and a 4x multiplier for the hypertransport. then raise fsb to 240 and it should run fine.
ive got mine running as follows :D
fsb = 266
cpu multi = 9 (2394mhz reports 2.4ghz)
ddr ratio = 1:1 (ddr532 3-3-3-6)
hypertransport = 3x (798mhz... not that it matters)

most peoples ram can't handle those settings though. im very happy with how well my ram is doing... cant wait for my 7900gtx :D
ive actually had my hypertransport at 1.2ghz before but that was unstable... it was accidental lol but windows did boot!

the settings i suggest he runs his system at would be these:
fsb at 240
hypertransport multi at 4x
cpu at default multi
ddr at 166mhz divider (this is like running ddr400 at its default settings)
this ought to be perfectly stable. if not then lower fsb to 238 and test that.
you can test if its stable using dual prime95.
Click to expand...
Holy Crapola Batman! You got lucky with that hypertransport speed.

My friend cannot find the option to set up a memory divider in his BIOS. I have a feeling he missed something, but can you guys give me a list of what different names the option can be called to see if my friend sees anything? I am fairly certain that some mobos lable settings differently! :D
 
Dialamo said:
Holy Crapola Batman! You got lucky with that hypertransport speed.

My friend cannot find the option to set up a memory divider in his BIOS. I have a feeling he missed something, but can you guys give me a list of what different names the option can be called to see if my friend sees anything? I am fairly certain that some mobos lable settings differently! :D
Click to expand...
One of the most common is DRAM Config/Configuration.
 
different for every motherboard. look for 5x and change it to 4x. he can o/c the fsb... thats all well but he needs to change the ddr divider from 200mhz to 166mhz...
 
My friend suceeded to overclock his CPU to 2.4GHz and its perfectly stable. Thanks a lot people!
 
:D yep thats what were here for!
i need a new psu lol im stable with all default clocks but if i o/c my cpu my psu dies really quickly... this began yesterday when i went from my 7800gt to my 7900gtx lol obviously.
at least i know how to fix the problem! :D
 
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