I7 8700k 4.8 oc

[wesambukhari]

Hey guys, i recently got a 8700k and i tried overclocking at 4.8ghz but decided to use gigabytes dynamic voltage. i know this chip needs 1.330v to run at 4.8 stable. I set the freq at 4.8 on all cores, left all c states on, LLC Auto, AI AD/DC 1|1 and dynamic voltage at +0.1v. This was stable for me but the voltage spikes up to 1.368v, even tho this is safe its unnecessary. Did i miss something and is this ok for a 24/7 oc?

Ps. avg temp gaming 72* Max 78*

 

[Roland Of Gilead]

Couple of things. Gaming temps are too high for my liking should be 10c lower. 1.33v seems a little high. How did you establish that? Most others seem to be about 1.25 to 1.3 for 4.8-5.0ghz. That's possibly why you are running hot.

Have you stress tested with Prime to establish max heat at given voltage. I suspect given your gaming temps are 78 max, if you were running prime95 small fft's to stress, your temps would be much higher. So either you're giving it too much juice, or not enough cooling. What cooler are you using?

IMO temps and voltage should be lower.

edit: Try LLC on manual, but the lowest levels (1 or 2, or low etc whatever the settings are for your mobo). At higher levels it can overvolt, and raise temps.

 

[wesambukhari]

Sorry i didnt mean gaming i meant handbreak where i sat at around 72-75 deg and as for the voltage i decided to go with 1.33v because vdroop drops the voltage to 1.2 under load and i dont like using the llc settings because they are ridiculously high. My llc options are standard, high and turbo

 

[Roland Of Gilead]

Sorry i didnt mean gaming i meant handbreak where i sat at around 72-75 deg and as for the voltage i decided to go with 1.33v because vdroop drops the voltage to 1.2 under load and i dont like using the llc settings because they are ridiculously high. My llc options are standard, high and turbo

Try LLC on high, and with a lower voltage. Maybe 1.3. See if the vdroop is less.

Use prime 95 small ffts for full load testing. It will give you max heat at a defined voltage, so it's good to know where your temps are really at.Handbrake is useful, but not ideal for stress testing as there is no error checking.

 

[wesambukhari]

ok so weirdly setting llc to standard fixed the voltage spike so max voltage is 1.332 with 68*c under stress(not stability tested properly), but would 1.33v at 68* be good for 24/7?

 

[Roland Of Gilead]

ok so weirdly setting llc to standard fixed the voltage spike so max voltage is 1.332 with 68*c under stress(not stability tested properly), but would 1.33v at 68* be good for 24/7?

Yeah, for 24/7 i've seen people up to 1.35. For me thats too high considering most are under 1.3.

With that said if temps are lower as a result then, defo, that's a good thing.If you're satisfied with the clockspeed, try dialling back the voltage notch by notch.

The purpose of using Prime is to get the exact voltage right. You may able to reduce the vcore to 1.3 or there about, as long as you test with Prime you will know what you max temp is, and if the voltage is stable. So you could get lower voltage, and thus even further lower temps on load. If when using Prime your temps go above 80c or much higher, then you know you either need to cut back voltage or clockspeed or get better cooling.