Program Crash when oc. Why?

[Cyclone_Chris]

Just a quick question. I tried overclocking my 3.06ghz dual xeon to 3.46ghz and max crashes after it renders one frame from this one scene. Other scenes render fine and my cpu temps don't change much maybe 1-3degrees increase.

These are the render times.

3.06ghz(133x23) = 30sec a frame
3.33ghz(145x23) = 28sec a frame
3.46ghz(152x23) = 27sec a frame then program crashes

System specs
2x3.06GHZ Xeon 533FSB 512K cache
Asus PC-DL DELUXE motherboard
KINGSTON HYPERX 2048MB DUAL CHANNEL KIT PC3700 2X1024MB DDR 466MHZ(timings =3-4-4-8-1T at +2.6V)
BFG GEFORCE 6800 ULTRA OC
Antec 550W Power Supply

Any Ideas on why i get this crash? Thanks.

 

[RichPLS]

It sounds like memory errors. You can try clocking it down in 5mhz increments till you get stable. Or try raising the memory timings

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So I got me a pen and paper And I made up my own little sign</pre><p></font color=red>

 

[Cyclone_Chris]

Raise the memory timings? Won’t that make my ram slow? My ram is already faster then my motherboard can handle so i don't know why my mem can't handle the oc.

Which of these settings would I change?

1. Cas Latency Time (2.5)
2. Active to Precharge Delay (7)
3. Dram RAS# to CAS# Delay (3)
4. Dram RAS# Precharge (3)

sorry for the dumb questions i'm new to this.

 

[Crashman]

Program Crash when oc? I'm sorry, it's been tried, but in the end I have always had a mind of my own.

Oh, your RAM could be the problem, but it's unlikely. Still, it's probably rated at 2.7v or more, you might want to check into that just to be safe.

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[Cybercraig]

You will probably need to stick more voltage to those CPU's. You could try the HyperX at 3,4,4,8 timings which is stock at PC3700 speeds and work down from there. You shouldn't need more Vdimm as they are already slowed down from stock.

Abit IS7 - 3.0C @ 3.6ghz - Mushkin PC4000 (2 X 512) - Sapphire 9800Pro - TT 420 watt Pure Power
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Sony DRU-510A - Yellowtail Merlot

 

[Vapor]

I don't think that board has an AGP/PCI lock...and running them at 76/38 respectively would certainly put at tax on some of your components.

Maxtor disgraces the six letters that make Matrox.

 

[jammydodger]

It could be a number of things
1) Northbridge might not be able to handle that bus speed...bear in mind it has to controll 2 CPU's aswell.
2) 1 or more PCI/AGP devices may not be able to handle that speed.
3)The CPU may not have a high enough voltage to work at those clock speeds.

 

[addiarmadar]

Could use more juice to the CPU. If you CPU:RAM are at 1:1 ration make sure you are not going over the rated FSB for it. Could also just need more juice too.

<i><font color=red>Only an overclocker can make a computer into a convectional oven.</i></font color=red>

 

[Cyclone_Chris]

hmmm. Sounds like the problem could be anything. I know for sure that my board doesn't have an agp lock. But if that was the problem wouldn't my computer refuse to boot and not display anything?

I tried higher/lower timmings for my ram but that didn't solve the problem. I think I heard somewhere on the pc-dl forums that the motherboard undervolts the dimms.

hmm this sucks I thought I could get 3.6ghz outa this 3.06ghz cpu.

 

[addiarmadar]

Oh yeah thats news to my ears. There is a great deal of mobos out there that wont dish out the voltage setting you set in the bios and noramlly you have to go 1 or 2 settings higher. True for AGP voltages and CPU voltages. Take ASUS and Abit boards for example.

<i><font color=red>Only an overclocker can make a computer into a convectional oven.</i></font color=red>