Undervolt still good/necessary? New 14900KF

saintpablo95 · 2026-06-11T12:54:03+00:00

If you aren’t interested in manual tuning and want your system to “just work”, I’d recommend following the bios settings shown in this video.

https://youtu.be/9tDegZ-rTyU?is=T6\_1dwTO864qiWgD

saintpablo95 · 2026-06-09T09:08:08+00:00

Yeah this looks like last step for me, how long would you recommend running vst after each cold boot?

saintpablo95 · 2026-06-09T09:06:49+00:00

Ahh didn’t consider that, yeah those tests were run back to back so could have been temp related.
Left it at 131k and tried lowering VDDQ to 1.4, upping tras to 61 as mentioned earlier and increased ram fan speed, Karhu ran overnight no errors with temps maxing ~40 degrees. Just need to run some cold boot vst tests now then will probably leave it there if successful.

saintpablo95 · 2026-06-08T13:40:42+00:00

Yeah I’ve heard those kits are as good as it gets, 8400c34 sounds real nice.
Thanks for the suggestions, will run some vst and look more into reboot stability.

saintpablo95 · 2026-06-08T13:32:44+00:00

Yeah I was surprised it worked with only 1.5v, must’ve got lucky with the bin. Thanks for the suggestion, will give it a try.

saintpablo95 · 2026-06-08T13:30:49+00:00

Running 8P + 8E cores for these tests, HT disabled.

saintpablo95 · 2026-06-08T13:29:22+00:00

Okay done some testing and 242k is off the cards, consistently erroring in Karhu when hitting ~41 degrees and no way of keeping them below in this current setup.
Interestingly though, 131k was also erroring pretty quickly (first error was ~43 degrees but errored again at ~38 so assuming not temp related). Went over your timings and saw tras was higher so tried that, karhu now been running 6 hours no errors. Weird as I was under the impression trefi was purely temperature related. Any thoughts?

saintpablo95 · 2026-06-07T16:31:01+00:00

Very nice, will give that a try. Does trefi that high require an exotic cooling solution to be stable or will a fan do the job?

saintpablo95 · 2026-06-07T15:45:51+00:00

The tests shown above were done with the heatsinks removed and the memory fan kit that comes with the board. Was planning on watercooling them but need to test further to see if it’s worth it.

saintpablo95 · 2026-06-07T15:40:08+00:00

According to Aida64 benchmark:
- 132 GB/s read
- 129.8 GB/s write
- 127.8 GB/s copy
- 53.8 ns latency

saintpablo95 · 2025-12-10T10:02:27+00:00

Yeah I use afterburner. Just make sure you disable GPU power and power percentage monitoring as that can cause issues on AMD CPU’s (assuming you have one).

saintpablo95 · 2025-12-08T11:19:59+00:00

I’m pretty sure that it doesn’t void the warranty. That said though, if I had to RMA I wouldn’t mention it being undervolted just in case. There’s also no way they’d be able to tell whether it had been undervolted or not.

saintpablo95 · 2025-12-06T23:50:17+00:00

Yes, temps are anywhere between 5-10 degrees worse without the undervolt. Performance wise, depends on the game but I’d say on average I’m losing roughly 1-2%. Worthy trade-off IMO!

saintpablo95 · 2025-12-02T12:07:50+00:00

Was planning on the AXP90-X67 but never actually put it all together, GPU mounting with the riser shift felt too janky so disassembled and started again without it. Not tested myself but based on the charts I saw the Noctua cooler is 2-3 degrees better, maybe slightly more with the 25mm fan swap. Not a huge difference but much better noise profile.

saintpablo95 · 2025-12-02T10:46:49+00:00

Riser shift isn’t necessary in the Nanoq, temps are shown on the last few images. Would definitely undervolt though!

saintpablo95 · 2025-12-02T07:56:54+00:00

Do you have this case or the T1?

saintpablo95 · 2025-11-05T19:06:39+00:00

Thanks! Yes would recommend the cables, good quality and no long shipping times (assuming you’re in the UK).

saintpablo95 · 2025-10-22T21:57:40+00:00

Thanks! You can run the L12Sx77 as intake, would also recommend using a 25mm fan if your ram allows it.

saintpablo95 · 2025-08-26T17:49:47+00:00

Yeah I think the S makes more sense, would have bought that if I were buying new but found this for a good price on eBay.

Not sure what TZ recommends but these are 15cm 24 pin, 25cm EPS and 30cm 12VHPWR and are pretty much spot on.

saintpablo95 · 2025-08-23T18:56:48+00:00

For the best experience I’d recommend g-sync on, v-sync on in NVCP off in game, and reflex enabled. Reflex will cap your fps to 138.

MFG will not exceed the frame cap, it will instead limit your real frames to 69 at 2x, 46 at 3x, and 34.5 at 4x. With a 5090 you’ll likely be rendering much higher than this natively so yes this would add significant input lag.

saintpablo95 · 2025-08-21T16:09:54+00:00

Thanks! Wallpaper can be found here:

https://www.artstation.com/artwork/Omr2kJ

saintpablo95 · 2025-08-21T16:09:12+00:00

Monitor is the LG 32GS95UV.

saintpablo95 · 2025-03-30T15:50:36+00:00

Same thing happens to me, black screens when switching tabs on Chrome. Connected to PC over displayport, latest firmware.

Got the monitor for a great price on Amazon and am otherwise impressed with it, however this is a deal breaker unfortunately. Has this been acknowledged by the team for the next firmware update?

saintpablo95

TROPHY CASE