8700k Overclocking on MSI Z390 GAMING PRO CARBON

wefxyoutube

New member
PRIVATE E-2
Joined
Jul 9, 2020
Messages
2
Hello,
I'm trying to overclock a 8700k on MSI Z390 Gaming PRO Carbon motherboard.
Here are my BIOS settings: https://imgur.com/a/W4Xnph5
I can't reach 5GHz even the previous owner of the 8700k (i'm the second) proof me that is CPU it's a little bit 'golden sample'.

Can someone help me? I'm doing something wrong?
 

darkhawk

Active member
Global Moderator
Joined
Nov 20, 2012
Messages
12,831
So where is the problem? Is it booting at 5GHz? Is it crashing when loading windows? What's happening?

Was he using the same board? Or a better board? 
What temps was he seeing?
What cooling was he using? What cooling are you using?

I mean.....you really need to be much more specific. Each answer could easily generate or change the next thing to do.
 

wefxyoutube

New member
PRIVATE E-2
Joined
Jul 9, 2020
Messages
2
Was he using the same board? Or a better board?
He was using ASUS Strix Z390-F, but I think Gaming PRO Carbon it's better.
About temps I don't know also I don't know what cooling he uses.

Mine cooler is Noctua NH-D14.
The problem is that I get BSODs and also in PRIME95 I get rounding errors.
I think almost any 8700k should carry 5Ghz on this motherboard or am I wrong?
 

darkhawk

Active member
Global Moderator
Joined
Nov 20, 2012
Messages
12,831
It was a different manufacturer board. Who knows how Asus had things setup compared to MSI.

You may have to play with the voltage settings as well as loadline calibration settings to get it functioning well.
It isn't always just as simple as setting it to 5 ghz and going.....
 

t0yz

Member
SECOND LIEUTENANT
Joined
Feb 1, 2012
Messages
113
andreii1 date=1594336636 said:
Was he using the same board? Or a better board?
He was using ASUS Strix Z390-F, but I think Gaming PRO Carbon it's better.
About temps I don't know also I don't know what cooling he uses.

Mine cooler is Noctua NH-D14.
The problem is that I get BSODs and also in PRIME95 I get rounding errors.
I think almost any 8700k should carry 5Ghz on this motherboard or am I wrong?
Not all stress testing is created equal. p95, especially with AVX, is incredibly brutal on CPUs. At 4.9GHz, no AVX offset, and 1.30V I assume you'll hit 200W of package power usage and temps that would result in thermal throttling for a non delidded CPU (is yours delidded?). Also, 1.3V is quite low for P95 and 4.9GHz, you truly need a golden sample to be sample with AVX at that frequency. My 8700K requires something like 1.34V for 4.8GHz in P95 with AVX and it's kinda average. You can remove the Long Duration power limit since you have both maxed anyway. You can also remove the manual current limit. You don't really need to turn off that many features in BIOS, the 8700K will work well overclocked with speedshitft and the like enabled. More importantly, you should disable XMP and all the manual DRAM/SA/IO voltage settings until you get the CPU stable. XMP can generate instability itself, in fact it took me a year to get my RAM under control. Set it at default JEDEC while you stress test the CPU OC. You don't need a stable/override CPU voltage either. It's a more elegant solution to have it adaptive and with an offset. Again, the Z370-390 platform and Coffee Lakes are very nimble and it's a shame to deploy what I would deem as outdated bruteforce OC methods on them when you can have both power saving and high performance when needed without any performance loss. CPU Lite Load is also at its lowest value. That setting is affecting CPU voltage and I have a feeling that the Vcore will drop even lower than 1.3V under P95. You should make a habit from monitoring all the time while stressing with HWiNFO64, logging in the background.

If you only get rounding errors and not full BSODs, you might not be that far from stability. But it'll take pretty serious stresstesting (think 12-24 hrs) to try and get this stable. It's arguable if you need AVX in p95, in my experience my 8700K is not stable until it's AVX stable, YMMV. An offset can be useful, but you'll get the frequency oscillating between the 2 values even in games, as they often use AVX these days, so it might be annoying to you.

All in all, if you really want a stable OC, be ready to waste a few weeks on it and have your PC run P95 over night while you sleep to accelerate it a bit. 5GHz with AVX wil be a challenge. 5GHz with -2 offset at 1.35V should be doable on average CPUs.
 

andreiwx1

New member
PRIVATE E-2
Joined
Jul 12, 2020
Messages
1
The previous owner told me it's a golden sample and give it to me this screenshot:  https://i.imgur.com/HoKJVnt.png (sorry for qualtiy it's a printscreen from a website cache, because i forgot to save the full size one).
Also about CPU Lite Load if I choose an override voltage it's automatically greyed out and disabled.

Also If I set override on 1.32 VID still stay too low im thinking? https://i.imgur.com/JrbYin1.png
 

t0yz

Member
SECOND LIEUTENANT
Joined
Feb 1, 2012
Messages
113
andreiwx1 date=1594519538 said:
The previous owner told me it's a golden sample and give it to me this screenshot:  https://i.imgur.com/HoKJVnt.png (sorry for qualtiy it's a printscreen from a website cache, because i forgot to save the full size one).
Also about CPU Lite Load if I choose an override voltage it's automatically greyed out and disabled.
The screenshot is entirely useless, sorry. You can run games and light loads (like 3Dmark) with relative ease at a low voltage... with questionable stability. What that means is that you'll have crashes to desktop, errors in the Event Viewer logs, and occasional BSODs. To get the 8700k actually stable you need to do what you're doing, prime95 for long hours. Other decent test is LinpackXtreme, but if you're having errors in p95, PC is simply not stable and running other stress tests is useless. 
TLDR is that different tasks require different voltage to achieve stability, and to get these CPUs stable under full AVX loads will require the most voltage. Is the chip delidded BTW? All of this discussion is basically useless if you want to stress test with p95 at 4.9GHz or more, simply because you'll get temp throttling. You'll be able to cool it in games and other lighter tasks, but stresstesting at high clocks and with AVX will render the chip too hot to cool properly. Delidded chips will do fine, still reaching into 70-80s with 5GHz/1.35V+ depending on your cooling.
Never trust claims of OC/golden sample and the sort online. People usually don't stress test properly and consider P95 a power virus app with limited utility, especially with AVX enabled. You'll see a lot of people just using Blender instead, or running P95 without AVX and at fixed FFTs (SmallFFTs test tends to generate more heat etc.), basically tricking themselves into believing they have a stable PC. Very, very few people stresstest as they should, and you'll see this in the endless amount of PCs with crashes and stability problems online.
I wouldn't be disappointed if I were you, just raise the voltage and get it stable and delid if needed. Or, if you actually paid a lot of money for it, send it back.
 

darkhawk

Active member
Global Moderator
Joined
Nov 20, 2012
Messages
12,831
Well, if we look at your 'screenshot' from the golden sample, the guy was just running 3DMark.....which relatively speaking, is a light loading situation. Even a strenuous CPU test using 3DMark isn't very helpful in loading.

Then you're trying to run Prime95 with it instead and having issues. 

If the person who sold you this 'golden sample' hasn't run Prime95 with it, most likely you got screwed as far as 'golden sample' CPU.

Run it at 4.9 GHz, set your CPU offset when running AVX to -3 or -4, leave it on Auto for voltage, and be happy.

And don't ever fall for buying a 'golden sample' CPU again.....

My 9900K that I use can hit 5.2 GHz, which is generally pretty good overall for an AiO cooler. I'm sure I could go to 5.3 or 5.4 GHz if I really wanted, but theres no point since I wouldn't run it at that anyway....but that means my CPU is pretty good honestly.

But even now, it runs at 5.0 GHz because that's good enough.  And I think in your case, 4.9 GHz will be more than enough.
 
You must log in or register to reply.
Top