Unstable... raise FSB voltage or chipset voltage?

[hat]

I tried 400FSB and it didn't boot, not even with 1.55 vcore (cpu was at 2400MHz), 1.5v FSB and 1.4v NB.

This is really making me feel like a noob, with everyone toting 3GHz+ overclocks on these CPUs and me failing to even manage 2.66GHz...

This guy is hitting 3GHz on stock voltage: 1.325v
http://www.overclockers.com/forums/showthread.php?t=513496

I know it's not my memory... and it doesn't work even at 1.5v FSB. These guys are doing it without touching any voltages at all. I can't get mine to be stable at 333FSB... the board's supposed to support that stock, and the cpu is supposed to be able to go up even to 3GHz on stock voltage... but it doesn't.

 

[JrRacinFan]

I tried 400FSB and it didn't boot, not even with 1.55 vcore (cpu was at 2400MHz), 1.5v FSB and 1.4v NB.

This is really making me feel like a noob, with everyone toting 3GHz+ overclocks on these CPUs and me failing to even manage 2.66GHz...

This guy is hitting 3GHz on stock voltage: 1.325v
http://www.overclockers.com/forums/showthread.php?t=513496

I know it's not my memory... and it doesn't work even at 1.5v FSB. These guys are doing it without touching any voltages at all. I can't get mine to be stable at 333FSB... the board's supposed to support that stock, and the cpu is supposed to be able to go up even to 3GHz on stock voltage... but it doesn't.

Give it a CMOS clear and try again... overclocking is never guaranteed and I do know every board+chip combination is different.


@Rado

I wouldnt know the answer to that. Do you know, hat?
Why do you ask?

 

[hat]

Currently testing 300x8: 1200FSB, 2400MHz. 800MHz RAM thrown in too. About 40 minutes in and looking good.

It occurs to me that those guys were running older tests like Orthos and Prime95. I'm using OCCT Linpack, so I wonder if their settings would be stable under the test I'm running. It also occurs to me that a lot of them were running P35 boards, which would probably be better for overclocking than my current 750i. Throw in my sub-par PSU and it makes for a pretty bleak outlook... but still, coming from 1.6GHz to 2.4GHz on stock voltage is good news in my book, even if I can't have the additional 600MHz.

 

[Radi_SVK]

@Rado

I wouldnt know the answer to that. Do you know, hat?
Why do you ask?

LOOOOL youngs+town=Youngstown HAHAHAHAAA

 

[JrRacinFan]

LOOOOL youngs+town=Youngstown HAHAHAHAAA

Oh thanks! hat doesn't live too far from me& I am far from "young"-stown

 

[hat]

One hour in and running strong on the 2400MHz. I suppose if it passes the full 6:30 I'll call it a day.

 

[Tatty_Two]

Hat, is there any way you can take a screenie of all your Bios settings for me to have a look, maybe with a camera or something, something don't smell right here and I am betting there is actually a simple explanation.

 

[hat]

I've got a related thread going on here, but I'll take pictures of the settings I had and post them in a few minutes anyway.
http://techpowerup.com/forums/showthread.php?p=2114731#post2114731

 

[hat]

Here's the settings:

 

[Tatty_Two]

damn cant read them at work, it blocks on screen graphics, attach them to your post as thumbnails please and i will be able to, just go to advanced edit > manage attachments and upload them..... thanks!

 

[sapetto]

Here you go

 

[brandonwh64]

No offense brandon but you're full a bull....
In my own personal experience, 750i>680i, night and day difference.

Hat,

I'm wondering why you need the 1333 BSEL mod at all...

That really wasn't called for man... Ive owned a 780I and 680I and had Terrible OCing experience with them. The 680I would take my E5200 to only 3.5ghz the 780I would only go 3.3Ghz and when i changed to a MSI P45 Neo, it would do 3.9ghz? This is my opinion only and you should know that :shadedshu

 

[Tatty_Two]

1st thing..... can you link the memory?

 

[hat]

I had it set to linked for the majority of this struggle. I don't think it really means anything, it just gives it different FSB-DRAM ratios to get it closest to the frequency I specify. If I link it, I get a lackluster selection of FSB-DRAM ratios to pick from, but it calculates the memory frequency from FSB after QDR, so it's very difficult to use. For instance, if I have the memory linked and I set a 1:1 ratio while trying to run 1333FSB, it will make my memory run at DDR1333. I'm running DDR2 in this machine so that's not likely to happen

 

[Tatty_Two]

I had it set to linked for the majority of this struggle. I don't think it really means anything, it just gives it different FSB-DRAM ratios to get it closest to the frequency I specify. If I link it, I get a lackluster selection of FSB-DRAM ratios to pick from, but it calculates the memory frequency from FSB after QDR, so it's very difficult to use. For instance, if I have the memory linked and I set a 1:1 ratio while trying to run 1333FSB, it will make my memory run at DDR1333. I'm running DDR2 in this machine so that's not likely to happen

I could not get any decent stable overclocks with my old 750 unless memory was linked.

 

[hat]

That's really odd... you don't see anything else off in those pictures?

 

[Tatty_Two]

That's really odd... you don't see anything else off in those pictures?

Nope, apart from the fact that your FSB and NF200 voltages are too high which means that is NOT your issue here

 

[Tatty_Two]

OK, might I suggest this just as a trial, humour me.......

1. Link memory - select realistic divider based on 1333mhz FSB
2. Loosten your secondary ram timings a little
3. 1.3v FSB
4. 1.4V SPP
5. 1.3V NF200
6. CPU at aguess to be safe just go with 1.35V
7. just for now, set memory voltage to maximum rated for your sticks.
8. Keep GTLRef volts at auto.

give that a try

 

[hat]

I don't have an SPP voltage? It will boot at 1333, it just fails the test. There's a balance between FSB and vcore that might work, I just didn't have the paitence for it. Newtekie seems to think there's huge FSB holes in the CPU:

FSB voltage... what does it do?

 

[Tatty_Two]

I don't have an SPP voltage? It will boot at 1333, it just fails the test. There's a balance between FSB and vcore that might work, I just didn't have the paitence for it. Newtekie seems to think there's huge FSB holes in the CPU:

FSB voltage... what does it do?

He may be right, if thats the case, select a much higher FSB, bang on the juice and see if it works.

 

[hat]

Bringing the thread back...

I thought that my power supply was holding me back, so I bought a new one. It sat for a while (changed out power supplies, just not clocking) without me doing anything, but I decided to give it a go today. Testing 3000MHz (375FSB) on stock voltage. Test is a few minutes in, so it's quite possible for it to fail on me yet, but at least I gained a bit of ground.

//400FSB didn't boot, even at insane voltages. WTF?

3GHz (375FSB) turned out to be stable enough to survive 6.5 hours of OCCT Linpack, at default voltages for everything (1.325v cpu, 1.2v fsb, 1.2v NB, no changes to GTL shit).