Intel processors crashing Unreal engine games (and others)

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Kocicak

Golden Member
Jan 17, 2019
1,148
1,211
136
You're still gambling at any voltage higher than 1.3v and any clockspeed higher than 5.3 GHz, which cripples Raptor Lake. You still aren't getting the performance advertised on the tin.
I just checked what limits I set for my new 13900KS and they are 5200/4200 MHz and 160W, I believe even the highest voltage spikes are below what you wrote. BTW I also got a 2x48GB RAM kit, which I bought for twice money I originally payed for my 2x16 GB kit, so that felt like a very good deal and it was totally wort it, I have more than enough RAM for at least 5 more years IMO.

There is nothing wrong with my PC now, Intel CPUs are just fine when you do not allow Intel to destroy them.
 

Markfw

Moderator Emeritus, Elite Member
May 16, 2002
26,389
15,513
136
I just checked what limits I set for my new 13900KS and they are 5200/4200 MHz and 160W, I believe even the highest voltage spikes are below what you wrote. BTW I also got a 2x48GB RAM kit, which I bought for twice money I originally payed for my 2x16 GB kit, so that felt like a very good deal and it was totally wort it, I have more than enough RAM for at least 5 more years IMO.

There is nothing wrong with my PC now, Intel CPUs are just fine when you do not allow Intel to destroy them.
well, that may be true. But now they perform way under what you paid for and AMD is much faster at everything now. (compared to yours)
 

alcoholbob

Diamond Member
May 24, 2005
6,338
404
126
I just checked what limits I set for my new 13900KS and they are 5200/4200 MHz and 160W, I believe even the highest voltage spikes are below what you wrote. BTW I also got a 2x48GB RAM kit, which I bought for twice money I originally payed for my 2x16 GB kit, so that felt like a very good deal and it was totally wort it, I have more than enough RAM for at least 5 more years IMO.

There is nothing wrong with my PC now, Intel CPUs are just fine when you do not allow Intel to destroy them.

Seems pretty extreme considering the stock clocks of the 13900KS. Honestly I'm not aware of anyone on the various overclocking forums I've followed who had a degraded CPU who undervolted since Raptor Lake launched. This is a problem with the screwed up VID table Intel has since they don't have enough yields to meet demand for higher clocked i9s, and they don't have a very robust system of validating these chips so they just run them at much higher voltages then needed so they can get these chips out the door as fast as possible. AMD Zen 4 CPUs have much lower undervolting headroom than your average Raptor Lake CPU, which means they are binning and validating their chips much more efficiently than Intel from a business perspective.

You are better off just running stock all-core clocks and finding your lowest stable undervolt, taper your single core boost down to 5.8 (the regular 13900K speed), and likely it won't degrade any faster than any non-RPL CPU.
 

coercitiv

Diamond Member
Jan 24, 2014
6,759
14,682
136

NTMBK

Lifer
Nov 14, 2011
10,338
5,405
136
Despite having multiple posts in this thread, I just went ahead and bought a 14th gen i7 🙈

(The prebuilt I wanted only came with Intel options, and I just don't want to waste my weekends debugging a self build, I'm not 20 any more! I made sure there was a BIOS update with the Intel microcode fix before I hit buy though...)
 

Kocicak

Golden Member
Jan 17, 2019
1,148
1,211
136
Seems pretty extreme considering the stock clocks of the 13900KS. ...

You are better off just running stock all-core clocks and finding your lowest stable undervolt
Undervolting is a bad practise, see this post:

 

Kocicak

Golden Member
Jan 17, 2019
1,148
1,211
136
Isn't the microcode update just an undervolt?
No. They say is prevents overvolting. It does nothing to excessive frequencies. Intel cannot do anything with these, because they would face the need to compensate consumers for lower performance. So they just patched the CPUs somehow to make them last a bit longer without really solving the problem.
 

deasd

Senior member
Dec 31, 2013
576
957
136
OK so this just unexpectedly turn into Intel RMA Lottery Festival.


PK1 on X claims to have discovered a loophole in Intel's RMA system — Intel didn't ask for proof of instability for the Raptor Lake RMA request. Thus, the Core i9-13900K owner requested an RMA on his perfectly functional Core i9 Raptor Lake CPU and received a full $599 refund for the chip, the full value of what the chip cost when it launched in 2022.

Another Intel customer, SomeOrdinary_Indian, posted the details of their Core i9-13900K RMA story to Reddit. The RMA was legitimate this time, as the CPU suffered instability issues. But in this instance, he won the "RMA lottery," receiving a more up-to-date Core i9-14900K from Intel instead of the previous-generation Core i9-13900K.
 

coercitiv

Diamond Member
Jan 24, 2014
6,759
14,682
136
Isn't the microcode update just an undervolt?
AFAIK microcode update tries to address overvolting, more exactly the high voltage requests the CPU makes when it expects transient fluctuations from increased loads. This is a compensation mechanism that goes above VID values and tries to make up for what the mobo power stage cannot supply "instantly". The compensation algo seemed to be... overcompensating.

As I understand it, this enables lower operating voltages, since it allows a lower guard band. (or higher clocks at max voltage, which ofc they did)
 

DAPUNISHER

Super Moderator CPU Forum Mod and Elite Member
Super Moderator
Aug 22, 2001
29,888
25,676
146
The reps are overworked and harried; I am not at all surprised by the range of RMA experiences owners are having. It's completely FUBAR.

I'd return my 13900K too. It might be working fine now, but why risk FAFO if they will give me my $600 back after using it a couple of years?
 

alcoholbob

Diamond Member
May 24, 2005
6,338
404
126
Undervolting is a bad practise, see this post:


Interesting post. Reads alot like "don't exercise hard, because when you get older, your margin of safety for getting an injury is lower." I can definitely see where people get some weird learning heuristics from.
 

DAPUNISHER

Super Moderator CPU Forum Mod and Elite Member
Super Moderator
Aug 22, 2001
29,888
25,676
146
Wendell is back with his explanations and conclusions. He lets Intel off the hook far too easily. Their handling of the SNAFU become FUBAR has been reprehensible. That he is giving the alls clear to buy Raptor again is not cool given the prolonged and willful anti-consumer actions they engaged in.

 

KompuKare

Golden Member
Jul 28, 2009
1,203
1,516
136
Wendell's Arrow Lake review samples are safe!

Saw a post somewhere where their 13900K used to boost two cores to 5.8Ghz but with the latest firmware update they now only boost to 5.5Ghz. Assuming reviewers don't just recycle the Raptor Lake scores in their Arrow Lake reviews, then the timing of the "fix" will make Arrow Lake look faster (at least against previous Intel CPUs). Some of us did speculate that Intel might time things thus.
 
Jul 27, 2020
20,901
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I'm not happy that I can't get the 14900KS for under $200 shrinkwrapped. Everyone covering for Intel (including yes, the reviewers) should be ashamed. But maybe at the same time, job well done I guess? Saved Intel shares from going below $18.
 
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