Question Should I? Or forget about it?

mahanddeem

Distinguished
Apr 30, 2007
496
3
18,865
Hi
I recently bought a bundle offer from Microcenter: (price was good and I had the itch to upgrade from my previous Asus ROG z590 and 10900KF)

13700K
DDR5 16GBx2 6000mhz Gskill
Asus Z790-P Prime WiFi

I ran everything stock up until recently (I'm past the 1 month return period, but I have a protection plan on the motherboard). Now I have spent few days trying to see what my 13700k could do. It's not bad (silicone lottery wise). It's stable on stock for around 1.28v to 1.29v max voltage around 80c doing multi thread Cinebench R23.
Tried doing P 5.5 and E 4.5 with cache 8x to 50x
These settings needed like 1.35v and seems stable.

The major issue in my case, is as soon as Cinebench starts power consumption hits around 247 watt (HWinfo64 live sensor readings) it crashes. To desktop again.

My main question: I'm suspecting (unfortunately) is that the limited power phases on my budget Asus Z790 is to blame (14+1?). And this CPU is power hungry even at stock. So should I try to change the MB and get a new MB with more robust VRM (16+1 phases or more) ?

I mainly game and mod games on my PC, in addition to other day to day PC tasks. But I certainly don't mind a free performance uplift if I can mildly OC the CPU
 

Misgar

Respectable
Mar 2, 2023
1,996
537
2,640
I doubt an extra two phases (or more) are going to make much difference. Maybe if you spend twice as much on a mobo with 22 phases it will improve the OC slightly. You'll get slightly lower ripple with two more phases, but I suspect the main problem is you're pushing the OC too far.

Assuming your 247W power consumption is for the CPU alone, what cooler are you running? At those power levels you're getting to the point where big air won't work and a 360mm AIO would be more suitable. Is the CPU hitting the 100C limit?

Are you running the RAM at 6,000MHz. If so, try reducing XMP to stock and run the CPU overclock again. If it's stable, increase the RAM speed one notch and try again. Repeat and rinse. You might be able to squeeze a bit more out of the CPU if you reduce the XMP a notch or two.
 
  • Like
Reactions: Roland Of Gilead

mahanddeem

Distinguished
Apr 30, 2007
496
3
18,865
Seen a lot of articles and reviews.
P core 5.5 and E cores 4.5 doesn't (at least to me) seem to be pushing too far.
Yes I am using XMP II in BIOS (36 36 36 96 136) 1.35v
My cooler is Noctua D15 (with 2 fans).
I'm not seeing past 95c temp even in CB R23 when it works and overclocked
 
Is cinebench multithread some sort of a production app for you?
If not, don't worry about it.
Games are only going to usefully use a handful of cores.
These 13th gen processors are so fast using stock settings that I would not bother fiddling with them.
You might want to read this article on running a 13900K with less than top cooling:

In video form:
View: https://www.youtube.com/watch?v=dNFgswzTvyc
 
  • Like
Reactions: mahanddeem

mahanddeem

Distinguished
Apr 30, 2007
496
3
18,865
Is cinebench multithread some sort of a production app for you?
If not, don't worry about it.
Games are only going to usefully use a handful of cores.
These 13th gen processors are so fast using stock settings that I would not bother fiddling with them.
You might want to read this article on running a 13900K with less than top cooling:

In video form:
View: https://www.youtube.com/watch?v=dNFgswzTvyc
I agree to an extent. But:
1. I'm a PC enthusiast users. Fidiling is part of the experience
2. It's one of the reasons I bought a relatively high end CPU, as well as being unlocked (K SKU)
3. Again Z790 with a K CPU is for overclockers, but I think it was not a right choice for motherboard
 

Misgar

Respectable
Mar 2, 2023
1,996
537
2,640
I agree fiddling is half the fun. You overclock until the computer stops working reliably, then back off the settings a bit, only to discover it's still not 100% stable, so you tweak a few more settings. It certainly beats doing any real work with the computer. A bit like engine tuning.
 
I agree to an extent. But:
1. I'm a PC enthusiast users. Fidiling is part of the experience
2. It's one of the reasons I bought a relatively high end CPU, as well as being unlocked (K SKU)
3. Again Z790 with a K CPU is for overclockers, but I think it was not a right choice for motherboard
Games can use 120W maybe a bit more while cinebench can use more than 250W don't judge the stability for gaming by running CB.
You can use ixtu to create profiles for games that can take advantage of higher clocks so you don't have to torture your CPU 24/7 you can also make profiles for apps that use a lot of power to reduce power to the point you want.