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Intel Broadwell-C Ownership Club - Page 199

post #1981 of 2239
Quote:
Originally Posted by SwagHype View Post


Is it possible edram OC on MSI motherboards ?

Yes it is possible, but it is not fully supported. You need to have iGPU enabled to keep the overclock after restarting the computer (which reduced performance), and since max OC is only 2000MHz, the best with MSI motherboards is to keep it at Auto.
post #1982 of 2239
Quote:
Originally Posted by rluker5 View Post

My motherboard doesn't have a lot of options that work consistently with overclocking this cpu, so you may be able to find better tuning than this, but what I use is:
3.8 all cores, 3.4 cache @ 1.165v max for both ( I don't have the option for separate control that works consistently frown.gif ). 3.9 cores, 3.5 cache @ 1.19v. 4.0 cores, 3.6 cache @ 1.225. 4.1 cores, 3.7 cache @ 1.29v. And 4.2 cores, 3.7 cache @ 1.335v.
I use the xtu built in benchmark and if it passes I add .01v to .015v and it has been stable for me for gaming and casual use. I haven't been able to get more out of my cache at those voltages and 3.8 ghz cache is hit or miss with my chip. Not quite as hard to get as 4.3 on the cores (tried up to a questionably thermally stable 1.425v for that so far) but still not holding that well. And I didn't see a noticeable increase on the xtu bench going from 3.7 cache to 3.8 cache so I left it at max 3.7. But I do see an increase on that bench for all other steps and a little decrease when I reduce my voltage to the minimum for the speed I can run the chip at. I've used the 3.8 the most followed by the 4.0 then the 4.2. The 3.9 and 4.1 test the same in xtu but I haven't used them outside of that. Only have had this 5775c a few weeks redface.gif

I also don't trust my mobo to consistently give the voltages I tell it to, I trust the voltages as monitored instead. It gives the same v every time with a given setting, but it isn't always what I tell it.
This seems like it is mostly just with the 5775c. My EVGA Z97 Classified was better with my 4770k, but still not nearly as nice to use as the Asus Z87 Deluxe it replaced. But the EVGA did win on cpu performance at 4.9 ghz for the 4770k. And is just fine for ram and flat out excellent for my graphics cards so I will live with the akward cpu overclocking.
Because of my mobo I rely heavily on xtu for cpu overclocking.

I was able to get 4.3 cores to work for the 3dmark api test, but just for that.
Also I run my 4 sticks of ram at the best speed I can get at 1.525v (2 sticks ran faster but I have 4 so I'm using them)

So maybe you have to dial back your cache for the volts you are giving it.

Try older version XTU if you can't change voltage for core and cache separatedly. I'm using XTU 6.2.0.27 but with newer version if i set vcore voltage it's sets the same voltage for cache
post #1983 of 2239
Quote:
Originally Posted by Aegirsson View Post

Try older version XTU if you can't change voltage for core and cache separatedly. I'm using XTU 6.2.0.27 but with newer version if i set vcore voltage it's sets the same voltage for cache

I will.
Thank you.
+1

Edit: And just like that they are separate!
Edited by rluker5 - 10/17/17 at 6:40pm
post #1984 of 2239
4.1 is stable at 1.34v and 3.3 uncore

when i did 1.35 and 3.6 uncore it crashed? it didnt like its uncore raised

EDIT: 1.34v and 3.3 uncore was not stable lol
Edited by CoreyL4 - 10/17/17 at 6:38pm
post #1985 of 2239
ok it seems 4.1 is stable at 1.35v and 3300 uncore.... not sure how much farther i can push this chip. i want 4.2 frown.gif
post #1986 of 2239
Quote:
Originally Posted by CoreyL4 View Post

4.1 is stable at 1.34v and 3.3 uncore

when i did 1.35 and 3.6 uncore it crashed? it didnt like its uncore raised

EDIT: 1.34v and 3.3 uncore was not stable lol

Maybe 4.1 is what you get and you have to tune it in from higher volts like the 3.75 Benny89 suggested on down in steps to your stable min volts. Core and uncore separately.
I get 4.2 at 1.335v, but then no 4.3 all the way to 1.425v. Your cooler is better than mine so there is little diff after you find stable.
You could check the stability at a lower clock. If it isn't, maybe something else is unstable, like ram speeds, volts or maybe drivers. If lower is stable, then other stuff should be too.
post #1987 of 2239
Quote:
Originally Posted by CoreyL4 View Post

ok it seems 4.1 is stable at 1.35v and 3300 uncore.... not sure how much farther i can push this chip. i want 4.2 frown.gif
3.3 seems low for uncore. I noticed with mine that there wasn't much leeway with stable volts. .01v made a noticeable difference. You could try 4.1 core at 1.355v and move up the uncore slowly to see where it crashes, and try for 4.2 after you get some quality time in.

Tried W3 at 4k,60 for a bit since I put in over 300h with my old 4770k at 4.7ghz and hot. My 5775c@3.8ghz was getting 40% usage in novigrad and the fan stayed at idle speed tongue.gif
post #1988 of 2239
Quote:
Originally Posted by rluker5 View Post


3.3 seems low for uncore. I noticed with mine that there wasn't much leeway with stable volts. .01v made a noticeable difference. You could try 4.1 core at 1.355v and move up the uncore slowly to see where it crashes, and try for 4.2 after you get some quality time in.

Tried W3 at 4k,60 for a bit since I put in over 300h with my old 4770k at 4.7ghz and hot. My 5775c@3.8ghz was getting 40% usage in novigrad and the fan stayed at idle speed tongue.gif

just tried 4.2 and 1.38v and 3800 uncore. didnt boot into windows.

might just call it a day at 4.0 at 1.28v and 3300 uncore
post #1989 of 2239
Quote:
Originally Posted by CoreyL4 View Post

just tried 4.2 and 1.38v and 3800 uncore. didnt boot into windows.

might just call it a day at 4.0 at 1.28v and 3300 uncore

I set values in XTU and if I set the volts just a spec too low - click the pc is resetting.
Yeah, enjoy some games for a bit. The thing is a gaming cpu.
post #1990 of 2239
I definitely see an improve with Bf1. I stay at 144fps more without too many dips with my 1080ti on ultra. i dont always hold the 144fps but it the overall is smoother with higher fps.

I just wish I could get 4.1/4.2 stable.
Edited by CoreyL4 - 10/18/17 at 1:26pm
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