GA-EP45-UD3P - Won't boot with 450FSB

[KayossZero]

Originally Posted by D-an-W

I need the big guns to take a look at my template now and see where I could find some Prime Large stability (PLEASE!)...

IBT and OCCT Linpack are passing without error, but standard OCCT and Prime Large are being their usual PITA.

Help!

Not a big gun by any stretch but I'd say (assuming your memory is not the issue here what so ever) that it's one or a combo of #1 CPU VCore/MCH Core/Mch Reference? (could be you never know) #2 Would be *maybe* the chip is at its limit? If that's possible that is.

I know I wouldn't mind running @ 4.530ghz 533x8.5 but I think I'd require a massive VCore to get it stable (I've been trying from 1.36250 to 1.4250 with no luck so far in prime/occt) also looking at your IBT temps, which admittedly would never happen in real world let alone in games are something to think about if I want my chip to last 3-5 years that I plan to keep it.

[Psycho101]

If Prime large FFT is failing, I'd give VTT and MCH Ref tuning a go. I know you've tuned them already, but not sure if you've done it at this clock speed. Try 0.62-0.76 MCH ref at VTT from 1.2-1.4, you may strike gold somewhere.

[D-an-W]

Thats 99 combinations psycho (I made a chart!!!)!

[Psycho101]

Yep. It's surprising how many different combinations come from a couple of variables.

You should have seen mt Q8200 spreadsheet when I was trying to go from 3.2Ghz to 3.4Ghz, and stablize the D strap. It would have been quicker to crack 128bit SSL with a BBC Micro.

[devoh]

D-and-W

I see on your latest 4.24GHz( 530x8.0) template that you are using VTerm of 1.32 .
Are you living dangerously.. or has opinion changed that 1.32 is ok? I thought it was nothing over 1.30.

-devoh

[Psycho101]

VTT (CPU term) is commonly thought to be safe up to 1.4V. Lower as always is better, but 1.32 is pretty safe, I'd say no riskier than the default of 1.2V really.

[KayossZero]

Originally Posted by Psycho101

VTT (CPU term) is commonly thought to be safe up to 1.4V. Lower as always is better, but 1.32 is pretty safe, I'd say no riskier than the default of 1.2V really.

Yeah, also PLL being over 1.61 is a chip killer I hear or at least degrades it much faster than it being lower than that.

[Psycho101]

Agreed. The exact level at which risks increase greatly with PLL, like with VTT aren't certain, but Intel's maximum rated PLL is 1.60V. As UD3 P45's won't set 1.60V, just 1.61, this is deemed acceptable. I will admit I'm comfortable up to 1.65V PLL but will go no higher. That's just a personal choice though, and it may be better to stick to 1.61V.

[devoh]

Originally Posted by Psycho101

Agreed. The exact level at which risks increase greatly with PLL, like with VTT aren't certain, but Intel's maximum rated PLL is 1.60V. As UD3 P45's won't set 1.60V, just 1.61, this is deemed acceptable. I will admit I'm comfortable up to 1.65V PLL but will go no higher. That's just a personal choice though, and it may be better to stick to 1.61V.

Wow I've never really played with the CPU PLL. I set it to 1.57 and have left it there.

I am trying the CPU term of 1.32 and now I think I have 4.2Ghz stable.. will know in another 10 hours (or so )

-devoh

[devoh]

Originally Posted by D-an-W

Thats 99 combinations psycho (I made a chart!!!)!

So we should hear something back from you by the end of summer!!