i7 possible problem? Apologies!

Ovr

Ovr

Ovr

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Joined
16 Dec 2004
Posts
469
Location
Leicestershire
Evening chaps,

I will apologise in advance if this problem is really simple and I'm missing something :) Just got the bundle from OCUK with the gigabyte board, i7 @ 4ghz, and H50 etc.

Runs great on the OCUK settings, seems all they changed on the voltage side was the core volts and it's all dandy! However, they have it with Turbo on at 21*190 - I however, cannot get into windows at 200*20 with Turbo off and all C1E/performance monitoring off, seemingly regardless of what voltages I change, is there something I'm missing?

I'm changing the QPI voltages - 1.35V, CPU PPL - 1.88, IOH & ICH - 1.2V.

Here is a screenshot of my current setup after about 20mins in prime small FFTs @ OCUK settings, I think my temps are pretty good going?

settings.jpg


Memory is also at 9-9-9-28-84-2T @ 760mhZ (2:8 FSB:DRAM)


Am I missing something obvious? I've been into hardware for years and years but haven't really read up enough on the i7 yet to be 100% sure what I'm messing up :)

Any helps is muchly appreciated, and apologies if this is a pain.

Matt.
 
Thanks for the link Muel - does seem strange!

Bigbruiser, it just made it easier to order and also *sort of* guarantees a nice chip I guess, maybe I'm just dumb :P
 
BigBruiserAl said:
off topic why did you pay ocuk that money for a bundle if your going into the bios and start messing? :confused:
Click to expand...

He might have wanted to get a chip that was guaranteed to do 4GHz..

There has been a couple of people on here who bought bundles for this very reason.

You shouldn't really need to touch CPU PLL, or the IOH and ICH voltages to get 200x20..

What exactly is happening, is your system giving you a BSOD before it gets to Windows, or is it resetting itself??

You've not been very specific.
 
DavyBoy said:
He might have wanted to get a chip that was guaranteed to do 4GHz..

There has been a couple of people on here who bought bundles for this very reason.

You shouldn't really need to touch CPU PLL, or the IOH and ICH voltages to get 200x20..

What exactly is happening, is your system giving you a BSOD before it gets to Windows, or is it resetting itself??

You've not been very specific.
Click to expand...

Apologies Davy, the PC starts loading to Win7 but then BSODs and reboots before getting to the login screen. Seems really odd as all I'm changing from the OCUK stable settings is the multi/fsb and disabling turbo :confused::confused:
 
Ovr, theres no harm in trying different settings mate, but id reccomend writing down the ocuk bios profile settings, if something does go wrong and you loose the saved profile, youll always have a list of the settings to get you running again.
 
How much Vcore are you using?

You should first do what setter suggests, and write down all the settings for the profile OcUK have given you, just incase for any reason you lose their profile.

Then you should load optimized defaults, and start your own tweaking from there.

Try using 1.300v Vcore, and 1.35v QPI/Vtt, VDimm @ 1.65v, I take it you are using 1600MHz DIMM's?

If so, set the Uncore multi to 16x, and RAM multi to 8x, also manually set RAM timings to what your modules are rated for.

I personally have IOH core set to 1.140v, for ICH I set manually to 1.100v (this is the default setting, I just don't like leaving it on Auto) and I set QPI Pll to 1.140v, the rest of the voltages I leave on Auto.

You should also set the Performance Enhance to Standard, instead of Turbo or Extreme.

See how you get on with that, and whether it boots into Windows or not.
 
Some i7's hate being run on 20x multiplier. 21x or 19x is usually much easier to get running stable.

On my motherboard if I disable turbo mode I get unlimited access to the 21x multiplier. You should check if your motherboard allows this, not all do.
 
Ovr said:
Hey Davy, what makes you say set the Uncore multi to 16x?
Click to expand...

Like setter said, the uncore multi needs to be twice that of your RAM multi, so if you are using 8x RAM multi Uncore needs to be at least twice that.

You can set it to more than 2 times mem multi, but if you try going lower than 16x when using 8x mem multi, the system will fail to boot.

However, if you are using the 6x mem multi, and you try using 12x uncore, the system wont POST at all, you need to set it to 13x before it will boot.

I don't know if it is like this for all X58 boards, but it's definitely the case for the UD5.

How are you getting on anyway?

I remember when I first started trying to get 200x20 stable, it took me ages, whereas, getting 191x21 was a walk in the park, I didn't have to try at all!

Exsurgo said:
On my motherboard if I disable turbo mode I get unlimited access to the 21x multiplier. You should check if your motherboard allows this, not all do.
Click to expand...

This isn't possible on the UD5, Turbo mode has to be enabled before you can use the 21x multi.
 
just a reminder, our tech support staff will have a hard time helping you if you are altering bios settings and something goes wrong
 
rjkoneill said:
just a reminder, our tech support staff will have a hard time helping you if you are altering bios settings and something goes wrong
Click to expand...

Totally understood mate, but seeing as it's not prime stable for an even an hour at the settings it was supplied with, I need to fiddle :)

Update! These are my current settings - passes IBT no problem but Prime conks out on blend within 30mins, temps all < 70°C.

190x200 with TURBO on, 8x/17x multi's, 9-9-9-24-2 timings.

Voltages:

CPU Vcore - 1.3V
QPI - 1.355V
CPU PLL - 1.88V
QPI Pll - 1.14V
IOH Core - 1.13V
Dram - 1.66V

This is with load line enabled.

Also in the bios I have C1e, C3/6/7, EIST, and Virtualization Tech all switched of, which I'm assuming is wrong?!

Just wondering if the CPU needs more volts? I've played hours of Dragons Age: Origins without a crash but then it randomly rebooted in Windows when I was on MSN :) Bit stuck!
 
Saying that, the voltage under load is dropping to 1.264 (Corsair 650W if it makes any difference) - reckon that could be the problem? Just notch it up another step?

And sorry for all the no doubt....stupid questions! Many thanks to all who are trying to help.
 
A few tips i use on the ud5 you can play to try and get stable

use 101 for PCEI freq
set cpu skew to :100
CPU PLL: 1.3-1.5

I actully use all the above and my 4.2 setting is rock solid
 
Well I thought I had it all sorted and nice, been playing games all day (took a long weekend off work, iz naiz!) and it passed a 1hr blend test AND 1hr small FFT test in prime.

Then it reboots (no BSOD) when watching some QuakeLive stream, hmmmm? Maybe it's a windows thing, can't think of anything else :(

atlast.jpg
 
I had a similar issue with my bundle purchased recently (i7 920, noctua, GA x58 UD5, 6 gig ram).

Would just reboot with no BSOD, kernal dump or error in the application log (windows 7 64 bit). Torture tests and gaming didn't trigger it that reliably, but I could replicate it by using the Unigine benchmarker, and then runing Prime 95.. It could reboot when sitting at the desktop just copying files.

I posted in the customer support section on Monday and was advised to reduce the memory multiplier from 8 to 6. I ran Prime 95 over night, and whilst it did still reboot, it lasted 7 hours before it did.

Since making the change, I haven't had an unexpected reboot. But it still is early days and I'm not discounting that there may still be some instability.

So you could try the same fix - but I would advise using the official customer support channel.
 
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