i5 2500k @ 4GHz OC Stable?

ImTooSimple · 4 Aug 2013 at 02:32

Ok so i overclocked my i5 2500k to 4GHz using the Hyper 212 Evo.
Here is what it looks like in my bios.
http://gyazo.com/2282e0a17ff90d27869e8bfed427c347
My PC
http://gyazo.com/5fefb62b08c99722326a15606ddcdbed

I Ran 15 Intel Burn Tests
5 on Standard (Success)
5 on High (Success)
5 on Very High (Success)

I Ran Prime95 for 3 hours 10 Minutes (Success)
Each time it never passed 70 Degrees.

But my voltage keeps jumping from 1.220v to 1.270v
Is this normal?

I'm just curious as my BF3 isn't its "usual" self since overclock.

I Used the Automatic Setting my board supports which was called "Turbo 4.0GHz"

Any advice?

Justintime · 4 Aug 2013 at 03:20

Define 'usual self', 4Ghz on a 2500k is nothing for the chip, will do that at probably under the 'stock' voltage. No need to vary the ibt levels, just go max on the setting. I probably overkill at 100 runs at max but i'm very ocd about my overclocks. Suggest at least 24hr prime 95.

ImTooSimple · 4 Aug 2013 at 03:53

Ok so all i do is change the multiplier to 40? Leave the voltage as it is?

Justintime · 4 Aug 2013 at 03:58

Would manually change the voltage etc. and tweak to find the lowest stable. Would try for 4.4-4.5Ghz though tbh, 4Ghz is a waste on a 2500k

ImTooSimple · 4 Aug 2013 at 04:01

on 4GHz i get 30 idel and 70 on prime95

Justintime · 4 Aug 2013 at 04:12

Temps are ok, keep it 85C tops in summer with prime/ibt and all should be good. 4.4-4.5Ghz should be doable with about 1.25v on a good chip to about 1.385v (i stay under 1.4v for 24/7) on a rubbish chip with most averaging in between so about 1.35vish. This is my experience of about 40 2500ks.

ImTooSimple · 4 Aug 2013 at 04:21

Nono i want volt settings for 4ghz overclock 4ghz is enough for me trust, here is my BIOS what settings do i change?
http://gyazo.com/e3ff817f527e86f586d429f10af1d12a
http://gyazo.com/00bd08f3ea605118b0b69ace1777758b

Justintime · 4 Aug 2013 at 04:27

Second screenshot, negative cpu voltage offset until it gets unstable. However, if you motherboard has a 4Ghz preset, just use that as under 1.3v is fine anyhow and your temps are ok so nothing to tweak imo.

Marine-RX179 · 4 Aug 2013 at 09:43

I think the auto-voltage with the max bumping to 1.270v is a ted high for 4.00GHz. I'd go into bios and just manually try 1.220v first...and if it is not stable, then just try increase a bit, adding .010v at a time; 1.250v should be more than enough for 4.00GHz stable.

Justintime · 4 Aug 2013 at 15:05

Marine-RX179 said:
I think the auto-voltage with the max bumping to 1.270v is a ted high for 4.00GHz. I'd go into bios and just manually try 1.220v first...and if it is not stable, then just try increase a bit, adding .010v at a time; 1.250v should be more than enough for 4.00GHz stable.

I agree, but since its a mild overclock and his temps are reasonable..might as well just leave it at 'stock' hehe. Not worth tweaking for such a low clock imo.