i7 920 on MSIX58M -> Overclocking noob, help please

NutterzUK

NutterzUK

NutterzUK

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Hey, so I got some settings and, I know a little bit so started playing around.
My problem is that I'm not sure what is normal for voltages.

Anyway, here is a pick from CPU-Z of my current overclock ( 920 is stock 2.6Ghz ).




I want it to be as cool as possible, before I had it overclocked at 3.6, it ran ok but very hot.. so I eventually took it off. This is because of the voltages I believe, I also believe mine are too high.



I have a Corsair H-50 cooler ( details of rest of PC in my sig ).

Please can you help me make alterations to make this cooler?
Which voltages should I change? And, where would you start?

Thanks!
 
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P.S the core voltage varies up to 1.256 when i'm using prime.

My northbridge gets extremely hot, is there anything I can change to lower this?
I'm currently running Prime95 to get some temp results to post.

My memory is detailed here: http://www.ocztechnology.com/produc...tinum_low_voltage_triple_channel_12gb_edition ( 6GB ),
The details from CPU-Z for my memory are here:

Currently at 1444mhz, processor at 3.6Ghz
 
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The msi x58 had the hottest NB of any board if i remember check XS there is a thread on there. Voltage wise 1.3v seems to the average for a i7 930/20 @4Ghz with ofc better and worse chips about
 
So I could probably up my OC to 4Ghz?
My understanding may be wrong here.. so please correct me.

My understanding is that it is the voltages vary the heat. Temperature is a result of the higher voltage, the higher voltage needed to stabilise the overclock.

So,.. if mine is running at 1.25 with temps reaching approx 90 celc ( after 20 mins load ), Would I be ok to up my BCLK to make this maybe 3.8Ghz with the same voltages? I'm only 0.05v off the average for the i7 920 @ 4Ghz. Maybe I could just increase it to 1.3v and set it at 4.0Ghz.
I've never had this running at 4.0Ghz, does it seem a bit OTT to overclock it so far?

Thanks again!
 
This is my 3.6Ghz OC test using prime95 and measuring the temps.


As you can see, I don't really want the temps getting any hotter under load than that. Will changing it to 3.8 make these temps higher, or not affect them? I will leave the voltages constant.
 
I have changed it now to 3.8Ghz.

Here are my settings.. I really would appreciate someone to just tell me if these seem right or if they will cause issues, and if it is voltages that change the temps.

CPU Voltage: +0.100
CPU VCORE 1.288V
CPU PLL VOLTAGE : AUTO
QPI VOLTAGE: 1.35V
DRAM VOLTAGE 1.7V ( Changed to 1.65 after reading warning in BIOS that 1.65+ may cause damage to CPU ).

That's at 3.8Ghz now. I wonder if it will be hotter than the same voltages at 3.6Ghz, and if it will be stable. I will test now
 
far to hot, should be aiming at 85c max in bench testing IMO my 4.1Ghz overclock gets no hotter then 78c after 4hrs of prime 95 but thats with TRUE cooler. The h50 is not the best cooler on a i7 tbh.

I would not want to run a i7 at more then 70c in game temps 24/7
 
NutterzUK said:
I have changed it now to 3.8Ghz.

Here are my settings.. I really would appreciate someone to just tell me if these seem right or if they will cause issues, and if it is voltages that change the temps.

CPU Voltage: +0.100
CPU VCORE 1.288V
CPU PLL VOLTAGE : AUTO
QPI VOLTAGE: 1.35V
DRAM VOLTAGE 1.7V ( Changed to 1.65 after reading warning in BIOS that 1.65+ may cause damage to CPU ).

That's at 3.8Ghz now. I wonder if it will be hotter than the same voltages at 3.6Ghz, and if it will be stable. I will test now
Click to expand...

Qpi voltage seems a bit high as well, try lowering it down a bit. But as mentioned, your temps are getting too high, possibly try reseating the H50, it should be able to cool an i7 at 3.8-4.0ghz, though a lot of people have changed the stock corsair fan/s for better aftermarket ones.
 
Thanks for your feedback! RealTemp comes in two parts, there is RealTempt and RealTempGT is there a big difference between them? They seem to give me the same temps anyway. I'll have a go at trying that with prime95.

So, we think max should be 85 ish celc when using prime95.
I'll lower my QPI voltage a bit, is this likely to cause it to cool down?
Should I also try lowering the VCore?
I think the DRAM voltage should stay at 1.65, the warning worries me if I raise it, and on the cards themselves it says 1.65.
 
I'm having a go now on prime95 with RealTemp, i'll post up the results. I'll then lower the QPI and see if that makes a difference / if it is still stable.
I'll stop Prime95 if I see the temps rise above 90 and make them changes, i'll get back to you asap.
it's idling around 35 though which seems ok, but i'm in england and it's freezing cold!


Thanks so much for your help all of you!!
 
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It got up to 90 degrees again. I'm not actually sure how accurate this is at all... in any way.

Literally, the second I select Stop workers on Prime95, the temp jumps down 30 degrees celc. No joke, within a second. Surely that's not possible to cool down THAT fast?
 
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I've taken my QPI down to 1.3v rather than 1.35, I am unsure how much I should take this down so I am going to try in little bits ( unless someone tells me am estimate figure to try for ).

I'm back in Windows so i'll have a go at prime95 again.

One more note: to my next overclockers order, I am going to add another fan for the h-50, currently it only has the one stock fan that it came with.
 
Sounds like you either have a dodgy 850 or one thats not fitted right, that being said on some motherboards and setups the H50 just can't handle an i7 920.
 
1.300 sounds a lot better, but by all means try lowering it till you reach a point where the system fails stability testing.
 
Brilliant, thanks Setter! I really feel like i'm actually getting somewhere with this. I'm happy with my overclock I just need to get the temps down a little.

I've lowered the VCore by 0.2 ( CPU Voltage +0.8 now ).
I've also just lowered the QPI to 1.26.
It's running prime again now.

How long would you normally run prime for as a quick test to decide if it's stable?
Of course, I'm not wanting to leave it on for 3 or 4 hours just to have to start the whole process again a 0.01v different.

Thanks again!
 
15-20 mins will be ok for a quick test, ideally though you want to run it for a few hours. There are other apps, such as LinX, Intel burn test, which are good for quick testing, but theese run a fair bit hotter than p95, so id hold off on using those till you can get your cpu cooling sorted.
 
Hm, do we think there is actually something wrong with the h-50? I bought the h-50 thinking it would be really good for overclocking. I guess it's not that brilliant.

Maybe I should invest in a proper water cooling system.
 
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