i7 6700k 4.5Ghz voltage

abui1806 · 8 Oct 2016 at 08:04

hello forums,

What would you consider good and bad voltage for an 4.5Ghz overclock on the i7 6700k? Let's say for Cinebench R15 only, no need for extensive stability test like Prime95, Realbench, OCCT, etc.

Cheers

mistersprinkles · 9 Oct 2016 at 03:32

I can't answer that. I can say that I'm pretty sure that since Sandybridge, Intel has recommended a MAX deviation from the VID of 10%

abui1806 · 9 Oct 2016 at 08:04

Hmm I find Skylake voltage fluctuates a lot more than Haswell-E, even at fixed mode and LLC1 on Z170 OC Formula, all the speedstep and C states off of course. So far out of 10 brand new i7 6700K, only one manages to past Cinebench R15 at 4.7Ghz core, 4.4Ghz cache, 3000Mhz RAM with 1.25v (bios), 1.264v (windows) settings.

Nichrome · 9 Oct 2016 at 11:57

Hi

My i7 6700k runs 4.6GHz at 1.175V (fluctuates up to 1.225V). I guess this is fine. But it all depends on the silicon lottery..

abui1806 · 9 Oct 2016 at 12:59

Nichrome said:
Hi

My i7 6700k runs 4.6GHz at 1.175V (fluctuates up to 1.225V). I guess this is fine. But it all depends on the silicon lottery..

what is the voltage it needs during cinebench R15? Cheers for the info

Dave2150 · 9 Oct 2016 at 13:12

Mine does 4.6Ghz at 1.285v in cinebench (and everything else) on air. Though I'm only running that voltage when in turbo mode (adaptive voltage ftw, lets me have super low idle/low load voltages/temperatures

)

Temperatures max out at 75°C on a Noctua UH-12S with a single 120mm fan, so extremely quiet with no annoying pump noises.

abui1806 · 9 Oct 2016 at 13:13

Dave2150 said:
Mine does 4.6Ghz at 1.285v in cinebench (and everything else) on air. Though I'm only running that voltage when in turbo mode (adaptive voltage ftw, lets me have super low idle/low load voltages/temperatures

nice! thanks for the info

iBSOD · 12 Oct 2016 at 23:26

for 4.5GHz, 1.33 is probably the average voltage.

Here are some overclocking statistics for skylake
http://www.overclock.net/t/1570313/skylake-overclocking-guide-with-statistics

Nichrome said:
Hi

My i7 6700k runs 4.6GHz at 1.175V (fluctuates up to 1.225V). I guess this is fine. But it all depends on the silicon lottery..

Duuuude why aren't you running at 5GHz :cool:

Nichrome · 12 Oct 2016 at 23:55

iBSOD said:
for 4.5GHz, 1.33 is probably the average voltage.

Duuuude why aren't you running at 5GHz

Because my CX750M already screams at 4.8GHz

Can't afford to upgrade atm.

abui1806 · 13 Oct 2016 at 07:21

iBSOD said:
for 4.5GHz, 1.33 is probably the average voltage.

Here are some overclocking statistics for skylake
http://www.overclock.net/t/1570313/skylake-overclocking-guide-with-statistics

Duuuude why aren't you running at 5GHz

thanks a lot. After testing 10 units I found 2 pretty decent ones.

1. X610B309
4.5Ghz core - 4.4Ghz cache - 3000Mhz ram / 1.16v bios, 1.168v during cinebench.
4.8Ghz core - 4.6Ghz cache - 3000Mhz ram / 1.335v bios, 1.360v during cinebench. Temps max 73.

2. X621C159
4.5Ghz core - 4.4Ghz cache - 3000Mhz ram / 1.185v bios, 1.2v during cinebench.
4.8Ghz core - 4.6Ghz cache - 3000Mhz ram / 1.345v bios, fluctuates 1.360v-1.376v during cinebench. temps max 75.

Nichrome · 13 Oct 2016 at 09:39

Some nice OC there!

abui1806 · 14 Oct 2016 at 20:23

Nichrome said:
Some nice OC there!

considering that were only 2 out of 10 units, the chance of getting a good one is actually pretty depressing.