OC E6850 - 3400Mhz too much to ask on air?

GmanUK · 13 Oct 2007 at 16:02

Talrinys said:
If it only crashes one core i'd suppose it's a CPU issue, not sure

Yeah I thought it was weird only one core failing and the other carried on without any issues for another 6 hours.....has anyone had this before? :confused:

GmanUK · 13 Oct 2007 at 20:13

AndyOcUK said:
Try the RAM at 2.2 if it was stable at that. Only up it to 2.3 if its crashing the PC regardless.

If the extra voltage settings above increase stability then the RAM is obviously fine as no speeds or latencies will have been changed, just a little extra voltage through the CPU.

If its still the same with the CPU voltage increase (above) and crashes out, then slacken off the RAM timings (above) and increase to the other voltages I've listed above!

*EDIT*

Just read this back to myself and I'm struggling to understand my own waffle so:

Put simply....up CPU voltage to the setting I listed above.

If its still unstable try the RAM settings (above) at your original CPU voltage... touch NOTHING else)

If its still on the blink..use the settings listed above together.

"Phew"...now I understand! LOL

OK here is an update.... :eek:

I tried increasing the Vcore but no change. Changed RAM timings to 5-5-5-18 but no go. I have been having a play about today and got it stable @ 3.6Ghz with the following settings:

VCore 1.4875v
HTT 1.6v
NB 1.5v
SB 1.5v
CPU VTT 1.45v
PCI 101Mhz
Mem timings - 5 - 5 - 5 - 15
RAM Auto volts (Was having an issue with not getting past POST and after increasing 1 volt at a time from 1.8v - 2.3v I tried auto and it booted!!
FSB Divider linked, RAM in synced mode
CPU temp around 34 degrees idle
FSB 1600 @ 3600Mhz (x9 mp)

Tried a blend test for 5 hours and both cores held up......

Now heres the weird one......I have tried to increase to 3.7Ghz with the same settings, it gets past post but XP freezes on bootup (Blue progress bar just stops). I have increased CPU upto 1.525v but no joy. Tried changing RAM timings to 5-5-5-18 but still no joy...also tried the CPU increase and RAM timings change together but still the same....freezes on bootup.

Anyone got any ideas on this one? Or am I just being greedy now?

GmanUK · 14 Oct 2007 at 13:52

Just to make sure my OC was as stable as it should be I ran an Orthos Blend test for 12 hours last night....No issues whatsoever

So I now know that i'm working from a very stable setup.....still trying to get to 3.7 without success though!!

MagicUK · 14 Oct 2007 at 16:26

ya being greedy lo 3.6 on air is impressive lol

GmanUK · 14 Oct 2007 at 22:48

MagicUK said:
ya being greedy lo 3.6 on air is impressive lol

I thought I was....but don't think it will stop me

GmanUK · 14 Oct 2007 at 23:18

So the saga continues.....

I have been able to increase to 3650Mhz which is looking stable (Only used a blend test for a few hours...will do the usual 12 hours overnight).

The settings I am using are:

VCore 1.4875v
HT 1.6v
NB 1.5v
SB 1.5v
CPU VTT 1.45v
RAM 1.9v
PCI-E 101Mhz
RAM Timings 5-5-5-15 (It will boot up using 4-4-4-12 but does not feel as stable, not run any long tests though)
FSB 1624 (9x mp)

So all seems OK....but as soon as I try to increase it to FSB 1645 (3700Mhz) with the same settings it gets past POST, Loads XP, allows me to login....but then freezes after 10-15 seconds :confused:

I have tried the following (Resetting to working settings each time unless specified):

1) Same working settings, changed RAM timings to 5-5-5-18 - No boot
2) Same working settings, increased RAM to 1.95v - Loads, freezes after 10-15s (Same as without RAM volt increase)
3) Same working settings, increased VCore to 1.5v - Freezes while loading XP (No login screen)
4) Same working settings, increased VCore to 1.5v, Increased RAM to 2v - Freeze while typing password to login to XP

So tried a few different things....I have noticed that if I use working settings but increase RAM voltage to over 2.1v it does not go past POST...weird as the RAM is certified to 2.2v. It will even freeze the BIOS upon reboot :confused:

OK so there's a rundown so far.....has anyone got any opinions/help on what I can do next?

Do you think it could be a RAM issue? If so would it be worth buying a GeiL 2GB kit which is on offer here at OC?

Just to let you know....my temps are all well within normal. CPU 34 @ idle & 45 under 100% load.

Any input/help would be appreciated :rolleyes:

Justintime · 14 Oct 2007 at 23:32

GmanUK said:
Just to let you know....my temps are all well within normal. CPU 34 @ idle & 45 under 100% load.

As measured by? If using older versions of coretemp etc.. u're seeing 15C less than it really is (G0 stepping has 100C Tjunction as opposed to 85C for the older stepping). If going by the mobo utility it's likely wrong. Not sure about the latest speedfan and TAT but the core temps will likely need adjusting +15C since you have a G0 chip. Temps you got there seem a little on the low side for that speed and voltage.

Talrinys · 14 Oct 2007 at 23:39

Justintime said:
As measured by? If using older versions of coretemp etc.. u're seeing 15C less than it really is (G0 stepping has 100C Tjunction as opposed to 85C for the older stepping). If going by the mobo utility it's likely wrong. Not sure about the latest speedfan and TAT but the core temps will likely need adjusting +15C since you have a G0 chip. Temps you got there seem a little on the low side for that speed and voltage.

Hey i have a B2 E6400, will i need to add +15 to speedfan too? I believe it's set to do that by standard, but it's running at 80 degrees and that does really seem quite excessive.

Justintime · 14 Oct 2007 at 23:42

Wow thats quite warm dude, would check your cooling as its prolly not doing that chip any good. No though, the B2 will be fine without adjustment. How're you measuring that btw? Coretemp or TAT? remember 85C is the Tjunction so hit that and you'll trottle/reboot.

Talrinys · 14 Oct 2007 at 23:49

Yes i know, would like it under 70, running 72 degrees now after some minutes stress testing to get some numbers.
Using Everest or speedfan, can't get either TAT or Coretemp to work under vista 64-bit.
Weird thing is that Everest is reporting my cpu-cores to be 60 and 62 degrees respectively, while reporting the "main" CPU temperature at 73 degrees.
Edit: Just to add, using a Tuniq Tower 120 cooler and only running 3.36ghz so it shouldn't get this crazy.

GmanUK · 15 Oct 2007 at 00:10

Justintime said:
As measured by? If using older versions of coretemp etc.. u're seeing 15C less than it really is (G0 stepping has 100C Tjunction as opposed to 85C for the older stepping). If going by the mobo utility it's likely wrong. Not sure about the latest speedfan and TAT but the core temps will likely need adjusting +15C since you have a G0 chip. Temps you got there seem a little on the low side for that speed and voltage.

My temps & voltages......

Would all these be using the same incorrect temp? Adding 15 degrees is still ok for what I'm doing isn't it? :eek:

Talrinys · 15 Oct 2007 at 00:14

Hmm i just got Coretemp working on vista, and it says that the temperature is about 63 degrees on each core, a figure i'm a lot more comfortable with. I suppose i can just go uninstall speedfan then and trust Coretemp, that's the program i'm seeing most quotes from anyway?

Justintime · 15 Oct 2007 at 00:46

GmanUK said:
My temps & voltages......

Would all these be using the same incorrect temp? Adding 15 degrees is still ok for what I'm doing isn't it?

You got the right ver of coretemp, thats a cool runner, what cooling are you using? The ambient temp must be quite cool too!

Justintime · 15 Oct 2007 at 00:46

Talrinys said:
Hmm i just got Coretemp working on vista, and it says that the temperature is about 63 degrees on each core, a figure i'm a lot more comfortable with. I suppose i can just go uninstall speedfan then and trust Coretemp, that's the program i'm seeing most quotes from anyway?

Yep, is that under load though? if not then its still way too high for idle.

Talrinys · 15 Oct 2007 at 10:00

Justintime said:
Yep, is that under load though? if not then its still way too high for idle.

Yes that's after about 20 minutes of Stress Prime, thanks a bunch

Have been wondering about this all the time really, couldn't understand how 2 x 63 degrees could equal 78 or so, gonna stick to Coretemp now, thanks a lot

GmanUK · 15 Oct 2007 at 11:28

Justintime said:
You got the right ver of coretemp, thats a cool runner, what cooling are you using? The ambient temp must be quite cool too!

I'm using air. This is my airflow setup:

Ambient temp sits around 25 degrees

Justintime · 15 Oct 2007 at 11:31

Ahh, used that case and yep the airflow is good. I generally push for some overclock with almost total silence so my overall temps are a bit higher and those monster clocks just can't be done

(when using air, i don't do much phase/water anymore)

Talrinys said:
Yes that's after about 20 minutes of Stress Prime, thanks a bunch
Have been wondering about this all the time really, couldn't understand how 2 x 63 degrees could equal 78 or so, gonna stick to Coretemp now, thanks a lot

Thats perfectly fine for load

GmanUK · 15 Oct 2007 at 11:38

Justintime said:
when using air, i don't do much phase/water anymore)

Not been down that route.....yet

GmanUK · 15 Oct 2007 at 11:39

GmanUK said:
So the saga continues.....

I have been able to increase to 3650Mhz which is looking stable (Only used a blend test for a few hours...will do the usual 12 hours overnight).

The settings I am using are:

VCore 1.4875v
HT 1.6v
NB 1.5v
SB 1.5v
CPU VTT 1.45v
RAM 1.9v
PCI-E 101Mhz
RAM Timings 5-5-5-15 (It will boot up using 4-4-4-12 but does not feel as stable, not run any long tests though)
FSB 1624 (9x mp)

So all seems OK....but as soon as I try to increase it to FSB 1645 (3700Mhz) with the same settings it gets past POST, Loads XP, allows me to login....but then freezes after 10-15 seconds

I have tried the following (Resetting to working settings each time unless specified):

1) Same working settings, changed RAM timings to 5-5-5-18 - No boot
2) Same working settings, increased RAM to 1.95v - Loads, freezes after 10-15s (Same as without RAM volt increase)
3) Same working settings, increased VCore to 1.5v - Freezes while loading XP (No login screen)
4) Same working settings, increased VCore to 1.5v, Increased RAM to 2v - Freeze while typing password to login to XP

So tried a few different things....I have noticed that if I use working settings but increase RAM voltage to over 2.1v it does not go past POST...weird as the RAM is certified to 2.2v. It will even freeze the BIOS upon reboot

OK so there's a rundown so far.....has anyone got any opinions/help on what I can do next?

Do you think it could be a RAM issue? If so would it be worth buying a GeiL 2GB kit which is on offer here at OC?

Just to let you know....my temps are all well within normal. CPU 34 @ idle & 45 under 100% load.

Any input/help would be appreciated

Anyone out there with any advice on this one? :rolleyes:

helmutcheese · 15 Oct 2007 at 13:30

3.825GHZ with Volts at Auto 1.525v (with or without vdroop dont matter) or 3.9GHZ @ 1.55v for my max stable of this quiet Noctua NH-U12F+ faster fan.

Also ran a lower Multi and 1900FSB (475x4) with Memory Linked/Sync'd at 950mhz, but CPU and Memory wont go higher even unlinked as seems a large FSB Hole in this bios at that range (1303 by far best Ive ran).