| Core i5 2500K Overclocking Results I've been slowly working on overclocking my Core i5 2500K. Currently, I'm able to stably run the CPU at 4.8Ghz on an Asus P8z68-V mobo(35C) and 8GB of ram running at 1600Mhz (8-8-8-24). Its running @ ~1.46-1.47 VCORE with temps at 64-66C at full load. The CPU is being water cooled by a Corsair H60.
Does anyone here have an i5 2500K? And if you wouldn't mind, posting some information on what you're currently running it on & voltage, OC results, etc. I'm curious to see what others have been able to do with their 2500K.
I've heard some people are able to OC their 2500K to 5Ghz (water cooled) but I'm a little nervous about pushing mine any further. With a Vcore at 1.46 I'm feeling it's kind of getting a little too risky to push for higher. I'm not running it at full load 24/7. It's currently set to down-clock to 3.2Ghz when the processor is not needed in anything extensive but then auto up clocks itself when it needs more processing power.
From some research I've done, I'm hearing a range of different answers from 1.42- 1.52 MAX for what the chip can handle without frying it. I'm just hearing a gambit of different answers regarding Vcore. Running stability testing programs like Prime95(30+ min stress test) and IntelBurnTestv2(maximum stress testing, 5 tests) report stability in both programs when their tests complete. So it's reporting stable @4.8, 1.46vcore, 66C. |
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 KrisnatharokCaveat EmptorPremium
join:2009-02-11
Earth Orbit
kudos:3
 ·Comcast
| Wow dude, that's awesome. Can you lower the vcore at all and still maintain stability? 1.47 is high...
That said, 64-66C under artificial burn is well within normal operating specs, and you likely will never reach that in every day use.
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If we lose this freedom of ours, history will record with the greatest astonishment, those who had the most to lose, did the least to prevent its happening. |
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| I'm going to keep trying on finding the sweet spot with the Vcore while still maintaining stability. Some tests that I've run seem to indicate that lowering the vcore, even slightly, results in instability. But the instability only occurs when using IntelBurnTestv2 on very high or maximum testing not during normal operation or hardcore gaming... regardless though, it's still instability at one point either way.
I haven't really zeroed in on what vcore setting exactly causes stability/instability. I'm going to have to keep at it with slight increments to vcore to see what works. |
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dynodbPremium,VIP
join:2004-04-21
Minneapolis, MN | I get that trying to squeeze the last few MHz out of a CPU can be fun, but honestly I'd leave well enough alone in terms of clock rate if you can't get stable below 1.47vdc. That's getting pretty high even though your temps look OK.
I have my i2500k running at an everyday 4.3GHz with a Hyper 212+ cooler (air), one fan. My goal was to keep it below 65C under load even in Summer (gets kinda warm where my PC sits), and this works for me. I forget the exact voltage- 1.32? I was able to get 4.5GHz without much trouble at a higher VCore, but I prefer to trade the 200MHz for lower temps.
One thing that worked well for me was bumping the PLL voltage up a hair. Some can get away with lowering the VCCIO voltage a little for cooler temps.
Also, I'd go longer than 30 min on Prime95- a couple hours at least. If you haven't already, first OC the CPU with the RAM at the stock 1333MHz, find a stable OC, then work on the memory. That way you'll know whether it's your CPU or memory settings causing stability issues. 8-8-8-24 is pretty tight for 1600MHz, you might try 9-9-9-24. Personally I found it a lot easier to OC the CPU to 4.5GHz than trying to get the RAM to run stable at 1600MHz. |
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| reply to italiansmoke
Not the thread i wanted but you can look more yourself
»www.overclock.net/intel-cpus/525···ted.html
Lists a ton of 4ghz + oc for 2500k's with the cpu-z screen for proof (another thread has much better detail you can search for it)
p95 stress test for 12H at least 24 is good... IBT for at LEAST 20 passes max ram... I do 150 when I have the speed I want... 20-50 for testing while moving up.
water cooling will take like 30min to heat up... at least... air coolers take about 20seconds... |
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 GCoop
join:2004-12-08
Charlottesville, VA
 ·Embarq Now Centu..
| reply to italiansmoke
I took the easy way out on my 2500k. Made the jump to 4.5 tweaked the vcore ever so slightly to pass stability testing and called it a day. I know I could have gone higher and if it were a few years ago I probably would have spent a few days setting all those Hz free but alas my free time and motivation to play the game of diminishing returns have waned.
GJ though on your OC. [THUMBSUP] |
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 DKSDamn Kidney StonesPremium,ExMod 2002
join:2001-03-22
Owen Sound, ON
kudos:2
·Bell Sympatico
| reply to italiansmoke
said by italiansmoke:I've been slowly working on overclocking my Core i5 2500K. Currently, I'm able to stably run the CPU at 4.8Ghz on an Asus P8z68-V mobo(35C) and 8GB of ram running at 1600Mhz (8-8-8-24). Its running @ ~1.46-1.47 VCORE with temps at 64-66C at full load. The CPU is being water cooled by a Corsair H60. I have identical results with my 2600K. The mobo is a P8Z68-V PRO and an H60 cooler. I pushed it to 5.0, but the chip hit 100C and started to thermal throttle in the AIDA64 System Stability Test.
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Need-based health care not greed-based health care. |
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| TBH those temps are kinda high for everyday use... 85C is pretty warm. The OP with 64 is golden. |
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DKSDamn Kidney StonesPremium,ExMod 2002
join:2001-03-22
Owen Sound, ON
kudos:2 Reviews:
·Bell Sympatico
| said by hightempz :TBH those temps are kinda high for everyday use... 85C is pretty warm. The OP with 64 is golden.
It's not complaining. 85C is about as hot as you want to get under 100% load.
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Need-based health care not greed-based health care. |
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| Crap that CPU is hot...Intels sure can take a beating...I'm at 4.7 Ghz and I only hit 53-54 C on full load(Prime 95)...I guess hyper 212+ (2 fans) is doing its magic. |
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| reply to italiansmoke
you guys need to get your Vcore's down.
My i5-2500K will run at 4.8Ghz @ 1.37V. this cpu has ran at 5.3Ghz @ 1.525V but that took a lot of tweaking and ran hot.
My i7-2600K is presently running at 4.5Ghz @ 1.33V. never pushed this higher though.
the sweet spot though appears to be 4.7-4.8Ghz on an i5-2500K. the i7-2600K seems to be around 4.5-4.7Ghz for a sweet spot. |
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| I briefly got my chip to 5.2GHz at 1.52VCore but it wasn't stable, and I didn't want to push the voltage higher.
I am currently running my i5-2500K at 5.1GHz stably on 1.480 VCore. Intel states the max VCore rating for their chips to be 1.52V, so I should be well within the safety margins. 
Max temperature under load is 80C (I am using Corsair H80 water cooler), but that's during benchmarking. Temperature for everyday usage is well below that. ^^ |
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| what mainboard did u use?
i got an i5-2500k and mb:P8Z68-V
5ghz @ 1.52 nearly stable. 
can u give me some advanced settings? |
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| reply to italiansmoke
Here is mine 2500k and P8P67 vanilla... fans on medium in an old P180B
CPU cooling.. Hyper 212+ push pull oem fans
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Southern Ontario,Canada |
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