Overclocking: Fatal Error (Rounding)

Well acording to cpu-z they are currently at 5-3-3-15 so id change it to 5-5-5-15
CAS# Latency 5t
RAS to CAS R/W Delay 5t
Row Precharge Time 5t
Row Cycle Time 15t
 
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^^ Yup change them to that and then get the clocks on the CPU and RAM to a stable point. Once stable try tightening them (lower numbers mean tighter) until it's not stable. Then back off one. 4-4-4-12 is pretty good at higher clock speeds.
 
Thanks for that Info, just a bit confused though as there are lots of timing variables to set (about 7 or 8) and I went into my BIOS expecting to only see the numbers 5-3-3-15 then simply change them?
 
Yes I did mate, but it's all a bit confusing at first. :-S
I've reset the RAM timings now, the CPU FSB is at 218 and Clock speed is 3.281Ghz, with the core voltage still kept at 1.40v and ram voltage up by 0.25v at 5,5,5,15.

Im running Prime now and hoping to get past the 17min mark this time. If it's stable on Prime, I'll continue to increase FSB to a stable point, then start faffing with RAM timings as you suggest (lowering them, right?).

I know I may be annoying some peeps with the likes of this threade but as you say, all have to start somewhere. Have been doing a lot of reading about it but its a bit different when your on your own system setup and the life of the components rests at my hands. lol

Im also very glad I got the Arctic Freezer Pro from here - made a big difference to the CPU Coretemp over the stock fan. *thumbs up*

I'll let you know how I get on over next couple days, not rushing through the stepping up/stress testing.
Huge thanks to all so far. I'l be back at my next hurdle. lol
 
Tim said:
Don't worry, this is what the forum's for. Try Alt + PrintScrn next time too:)
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Ha, never knew that (just tried it), though I generally use my 1337 paint skillzorz to cut out the bits I need and re paste them. Anyway, off topic enough.

OP, good luck. Don't worry too much about frying your components, as long as you don't do massive increases then your system will just become unstable. If you tried 1.8 volts and 4GHz then you'd have problems :D

Good luck.
 
Cool, noted :)
And yeah - all these years and I never knew about Alt+ Print Screen!
Makes life squillions times easier! Pat on the back and much praise for you. lol
 
dr. sarf said:
I know I may be annoying some peeps with the likes of this threade but as you say, all have to start somewhere. Have been doing a lot of reading about it but its a bit different when your on your own system setup and the life of the components rests at my hands. lol
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Gotta ask to learn so don't worry about anyone getting annoyed mate. It's hard to find everything out at first but now you got it all going I'm sure you'll soon be very comfortable with overclocking. :D
 
OK guys,
I'm 1 hour into running Prime and all good so far (fingers crossed). Whats the recommended time to run Prime for to get a sure stability result? I heard 8 hours, also heard half hour minimum, and also 3 hours? I feel cruel making my CPU run at 100% constantly. lol

I'm now at 3.33Ghz, with core voltage upped to 1.475v i think, and ram voltage up by 0.5v. Load temp at average 54dg, peaked 58dg.
 
Good work. :)

The Ballistix 8500 are rated up to 2.2v so are you sure you need to overvolt it by 0.1v (default is 1.8v so +0.5v = 2.3v)?

Most go for 8 hours of prime95 on the small-ffts test to stress the cpu and then can do another run of 8 hours on the blend test to stress the whole system.
 
I think its on the blend test now, cant really remember lol.
Sadly I dont have the 8500 as they were an extra £20 per module :(
I only have the 5300 atm, but I think they have the same voltage rating.

My bad - I've misread my RAM voltage in the Bios, I've only upped it by 0.075 so currently at 1.875v. CPU Core is 1.45v
I think I'll run the Blend over night and see how things are in the morning. If it's stable then I'll be happy at 3.333Ghz. :)
 
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OK next step lol.
Been altering memory timings. As you guys suggested, I increased timings to 5,5,5,15 while determining my CPU overclock. Then you said to reduce the timings until its unstable then knock it back one, which I'm now trying.
Prime fails on anything other than 5,5,5,15 and if I go down to 4,4,4,12 the mobo gives me an error beep and Windows wont boot.
Looking at Crucials site, these modules are rated at 3,3,3,12 but I cant get them to run owt like that.
Any thoughts? lol
 
dr. sarf said:
I know I may be annoying some peeps with the likes of this threade but as you say, all have to start somewhere. Have been doing a lot of reading about it but its a bit different when your on your own system setup and the life of the components rests at my hands. lol
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i agree, iv bin meaning to do some first time oc'ing myself, now i got ram's with heatspeaders might as well use em, only prob i dont seem to hav this timing option u all talk about, what do i look for in bios to oc my ram???
 
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