Temperatures Vs Stability

[Ollii]

Hey, I have recently done some overclocking but I left it at a state were I found it was not 100% stable. So today I boosted the volts a little and have finally found a set-up that is reasonably stable. It passed LinX with 2048 MiB on 20 runs which I think is fairly stable (It fails however on ALL memory) however the biggest problem I have now found is that my temperatures have gone over 80 degrees

the cores were - 82,83,79,79 which I know is too hot (There are around low 40's for idle). However the fans were not at max but would probably be at what I'd generally run them at (Even with max fans it is still hitting 80 degrees under stress)

I am running water cooling with a large 360 radiator just for the CPU and so am surprised about hitting 80 degrees at this point, there is no air from what I can see in the loop and I'm pretty sure I got it all out while leak testing.

For my rig's specs, look at the notepad document enclosed.

My settings for the OC:

Ratio - 21

BCLK - 200

PCIE - 100

CPU Voltage - 1.38125

CPU PLL Voltage - 1.90

QPI/DRAM Voltage - 1.58125

IOH/ICH = All on auto

The rig is not very stable (as in it will fail 2024 on LinX and will occasionally crash in games) with anything under these volts.

So what advice would guys give me on where to go now? I am tempted to just go back to a stable 4GHz clock but that kind of makes me feel 'Why the hell did I spend 250 quid on water cooling then?'

All advice welcome as always

(The document is a little out of date so ignore the bits that seem a little out of place like the overclocking question on the CPU and which Raid to go for etc)

 

[Ollii]

Sorry to double post and seem impatient but I've waited quite a while and would quite like a response. So could anyone give me some advice or help me on this matter?

 

[marsey99]

I'm not great on 1366 but it sounds like its your ram and you don't mention what speed its running.

 

[hmmblah]

Pump running at full speed? Have you tried reseating the block? How much thermal paste did you use? What's your ambient room temp?

 

[MxFScotch]

also seems like alot of volts for 4.2ghz. +1 on the memory info and the temps. Just the cpu in the loop? That looks quite high.

 

[Ollii]

Hey, sorry about the missing bits of info but hopefully this will clear things up.

The pump is running at full speed and I used a pea size blob of thermal paste and then let it spread naturally. The loop is CPU only and my ambient room temperature averages around 24-26 degrees.

Response to MxFScotch: As I mentioned earlier the system really isn't that stable with the voltage any lower.

Memory speeds are as follow:

DRAM - 1603

UCLK - 4009 (This I know should really be at 3200 as it should be double the DRAM however I was advised to go to 4009 by someone, is this ok?)

DRAM Timings - 6-8-6-24

DRAM Bus Voltage - 1.65

Note: The system will run 4GHz without a sweat with around 15 degrees lower temps and much lower volts etc (When tested it appeared to be stable but I didn't really test in vigorously enough, I will try to do this test again sometime soon). 4.2GHz just seems to kill it for some reason.

 

[kilobravo]

Yes,lower uclk to 3200,and lower qpi/dram volts aswell.Forgot you couldnt have the rams running 2000mhz stable.Was trying to aim you for that

 

[marsey99]

drop the uclk and qpi voltage and i bet your temps drop too.

pea sized sounds a little too much for me unless you get very small peas where you live, 4mm blob (little less if lapped) i try to aim for and then let the mounting pressure spread it out. warm tim spreads better too

 

[Ollii]

Ok thxs guys. I'll give that a try and update to say how it went.

Np Kilo

shame that it wont hit 2000

And marsey it was actually less than a pea size

 

[marsey99]

just checking mate