Next step suggestions for 2500k OC

B

B!nd.

Gawd
Joined
Mar 14, 2012
Messages
757
2500k
P8 Z68-V/Gen3
8GB 1600Mhz 9-9-9-24 2T

I've been working on finding the lowest voltage @ 4.3 which seems to be @ 1.285. I tested it again @ 1.280 last night for a half hour of Prime95 at both FFTs 1344 and 1792 with no failure. Before I went to sleep I put it on blend which I wont know how it went until I get home from work.

My question is, I want an OC @ 4.5Ghz. Should I just set the multi to 45 and try to find a stable voltage before finding the lowest stable Vcore at 43 and 44? Temps will be a concern during the summer and right now they are hitting around 52 tops with a pretty cold ambient room temp (unsure atm).

Also, my LLC is set to Ultra High. Any suggestions for determining what I should set it at? I've read ASUS recommends Ultra High for average OC's and Extreme for probably 4.8+. I obviously just want to find the lowest possible Vcore @ 4.5.
 
If you can run 4.3 at 1.28 then you should have no problem getting to 4.5. I would just try 4.5 at 1.3V and see how it is, then work on the voltage from there. No point figuring out the lowest possible voltage for a speed you don't intend to run. As for LLC, generally speaking, lower is better. So I'd try to set it at High for a 4.5 overclock and see how it goes.
 
Why would you bother finding the lowest stable voltage at 4.3ghz when you want to be at 4.5ghz? Major waste of time.

Just set your multi to 45 and go from there. High LLC should be fine, 4.5ghz is no sweat you probably dont need any LLC at all anyways.
 
Hah, yeah you're right it does seem like a huge waste of time.

I wanted to do the 100MHz jumps mainly because I wanted to see what had the best clock/Vcore combination. Also it's my first overlcock and kinda just wanted the full experience lol.

I'll experiement with High and Ultra and see where that leaves me.
 
I have overclocked many cpus but last few years I have learned my lesson I simply take a cpu to it maximum oc without giveing the cpu more voltage. I make sure it's stable and that's that. Far too many cpus die early with voltage increase and for just a few more hundered megahertz it's not worth it.
 
yelsewshane said:
I have overclocked many cpus but last few years I have learned my lesson I simply take a cpu to it maximum oc without giveing the cpu more voltage. I make sure it's stable and that's that. Far too many cpus die early with voltage increase and for just a few more hundered megahertz it's not worth it.
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Wow you much really bumb up vcore quite a bit. Ive OC's 100's of CPUs in the last 10+ years and honeslty I dont think I have seen a single one die.

Having said that, the xxxxK sandybridges are great fun to oc. Finding the right balance of max speed, vcore and heat can make a substantial difference. Some stuff Ive overclocked hits max stable speed wether they are at 20o or 90o. Not so with the sandybridges. They are frigid at slow speeds and turn into magma when you really push them, and it really affects how they throttle down/stay stable.

My fav settings to play with are how high one can go on a very low vcore (significantly below stock)
 
4.5 on a 2500K is literally the easiest OC I've ever done. Set the multiplier and you're done. It's beyond there that you have to start tweaking a bit. Just don't mess with the BCLK.
 
HeavensCloud said:
4.5 on a 2500K is literally the easiest OC I've ever done. Set the multiplier and you're done. It's beyond there that you have to start tweaking a bit. Just don't mess with the BCLK.
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Yeah, I never would touch the BCLK. I've seen people do it but it just doesn't sit right with me.

I could just throw it to 45 and let the auto voltage take care of it, but I would like to get it @1.3V.
 
overvolt killing a CPU is a myth... I have been overclocking since the AMD K5-133 and I have never seen a CPU die. I guess if i ran it overvolted and overclocked for 6 or 7 years it may burn... but it would need to burn by then because i would have upgraded about 3 times.
 
B!nd. said:
Yeah, I never would touch the BCLK. I've seen people do it but it just doesn't sit right with me.

I could just throw it to 45 and let the auto voltage take care of it, but I would like to get it @1.3V.
Click to expand...

carefull with the auto voltage, it tends to set voltage beyond what the cpu really needs to be stable.
 
I am running blend for 4.5Ghz @ 1.330Vcore.

I survived 30 minute test @ 1.325 for FFT 1344 and 1792 but quickly into the blend test I got x101.

I do feel that compared to most 2500Ks 1.325 Vcore is a bit high for 4.5. Max temp is about 61 with a fairly cool ambient temp.

I tried adjusting the LLC and raising the Vcore but that didn't work either. At High it ended up failing @ 1.345V. Minor changes to VCCIO did not seem to help either.
 
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