I5 2500k Overclock good chip?

Robertnpmk

Robertnpmk

Robertnpmk

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Joined
30 Mar 2011
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Hey,

I'm running stress tests at the moment and have got my I5 2500k running at 4.4Ghz at 1.285 voltage.

Do you think this is a good chip and will be able to run 24/7 at 4.8Ghz or do you think I should be happy when I reach 4.5Ghz and leave it there?

R
 
I am running my i5 24/7 @ 4.4 at current on 1.28v with no problems. Temps 35 idel and around 60 load. Not pushed it further yet as happy with it but 1.35v for 4.7 sounds good to maybe give a go.
 
Its down to you really, my i5 was a bit weird, i'm currently happy running 4.5 day to day and have lowered the vcore down to 1.265 and temps down't go above 60C under 4 hours of primer blended but at 4.6 was a totally different ball game.

I had to raise vcore up to like 1.32 and under low vdroop was hitting 1.35 under vcore and under primer 95 was hitting 76C.

Push it as far as you want and use primter 95 or intel burn for stablity but make sure you watch your temps. 4.7 should easily be achiveable but is only ever limted by cooling.
 
Do not use intel burn test if you have Windows 7 service pack 1 as it'll force AVX instructions and put incredible extra strain on the i5/i7. Seeing as not many apps are written for AVX instructions then benching with them seems pointless. Use Linx instead as that doesn't use AVX instructions.


I'm currently trying to get my i5 on water to 5ghz 24/7. I hit a wall at 4.7 on 1.405vcore with overvoltage pll on auto and not enabled. A friend has told me to enable it and I will see where I can get tonight :)

At 1.44 volts I was only hitting 56c after p95 and linx. So good temps!
 
wow very nice temps,

Though Im happy with mine and will prob stop once I reach 4.6Ghz, Sounds like a nice number to me.

Sounds like I have an average CPU, Cant complain though.

R
 
You have a good cpu.

If it was me i'd try to get higher!
Try to get to 4.8. Worst thing that'll happen if you're safe is you'll be welcomed with a few BSOD for freezes
 
I should hopefully be able to stay at the 1.405-1.41 stage up until 4.8 and if i'm lucky 4.9.

I'll see how I get on tonight with overvoltage PLL.
There are a fair few people who run 1.4v 24/7. At the temps i'm hitting I don't mind running a little over the top. Though i'm sure my temps would be a lot worse if I wasn't running 360 rad for just a cpu!
 
ewarwoowar said:
Do not use intel burn test if you have Windows 7 service pack 1 as it'll force AVX instructions and put incredible extra strain on the i5/i7. Seeing as not many apps are written for AVX instructions then benching with them seems pointless. Use Linx instead as that doesn't use AVX instructions.
Click to expand...

This could explain why my temps were so stupidly high under intel burn and kept crashing lol

I might try and retest again tonight then, I managed to bench up to 5.3 and booted into windows and ran superpi as shown in the 5gz thread but only achieved with a crazy 1.52 vcore.

Day to day happy with 4.5 and as I use mainly for gaming tried 4.5 and 4.6 and benchmarking and testing games and made like an extra 2 fps, wasn't not convinced the extra temps was worth the improvement to be honest
 
1.52 is seriously way to high! Most people would never go over 1.5 :p

Also you would've notices your Gflops were double, thats becuase your SIMD width is doubled. I think the only thing with AVX instructions is server software
 
I only did the 1.52 vcore so I could see how high I could bench, topped otu at 5.3 and then it didn't matter what else I adjusted wouldn't post past that.

The 5gz sandybridge forum were doing it just for laughs but wouldn'y run on a daily basis, might try and raise vocre to like 1.40 tonight and try and hit 4.8 or 4.9.

When I was testing before got to 5.0 with vcore at 1.44 so might try and make it stable, whats the max recommended temp for sandybridge, I swear intel published somewhere 72C?
 
72.6C is the Tcase max value measured at the IHS, not the core i.e by the motherboard sensors. Tjunction max is a lot higher, 98C i think? , would try to keep about 15-20C (iregardless of the actual displayed temp, just set coretemp etc.. to display distance to Tjmax) away from the DTS countdown, so 83-85C would be fine for me (under IBT/Linx etc..) I'd leave the 15-20C headroom to take very hot summer days etc.. into consideration.
 
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I must have a very good 24/7 cpu looking at some of these voltages, nothing exceptional for high clocks though as it hits the Mhz wall around 5420.
Done hours of stability testing with a few speeds using LinX, Prime95 Blend & gaming.
These are all load voltages while stress testing

4200Mhz = 100% stable @ 1.128v
4600Mhz = 100% stable @ 1.216v
5000Mhz = 100% stable @ 1.320v

Been running 5Ghz for a couple of months now and the hottest core #3 hits 70c during LinX or P95
 
yes thats a very good chip,

Just got an error on prime 95.

Going to have to crank up to 1.32v for 4.5 Ghz,

@Bos can you send me your overclock setting if I trust you?

thanks.

R
 
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