the process reduces speed to 4.5ghz from 5ghz at 70°c
the process reduces speed to 4.5ghz from 5ghz at 70°c
It is something that is mentioned in reviews, I'd be lying if I said anyone from Intel confirmed it to me personally.
Here's a quote from
KitGuru
"The Core i9-9900KS does 5GHz under AVX loading
out of the box
."
I must have been exceptionally lucky with my motherboards, if no BIOS generally set the factory AVX offset corret.
On my own board, loading optimzed BIOS settings, in the upper left corner, the BIOS shows an AVX target frequency with no offset, and AVX is set to Auto.
I've only owned two different z390 boards, so with that limited number in mind, I can't say what's is most commonly seen.
But I've been lucky twice with my z390 boards, so naturally I'm surprised it is as uncommon as you say, to see a factory AVX offset being correct.
But I'm not trying to argue, I think you have a very good suggestion when it comes to a solution to OPs problem. So I'm a bit unsure what we are debating?
I haven't claimed anything anyone said to be wrong, and I always make sure to inform people when my own personal experince is what I base my suggestions on, and I never state anything as a fact, if I don't know
I don’t understand AVX instructions well. I’ll attempt to set the value to 0 to see if prime95 still slows me down. Are these instructions typically used? Since I mainly use my PC for gaming, I might leave them on auto if they’re not crucial for performance.
I have an i9-9900k running on a Z370 Gaming Plus, and I can confirm from HWiNFO64 that the VRMs reach their thermal limit before the CPU does. This was observed during stress testing. I've pushed the chip to 5Ghz, but I need to apply higher voltage than I'm used to. Also keep in mind that even if the thermal readings seem moderate, it doesn't necessarily mean the chip can handle more performance. Each silicon component behaves differently, and thermal performance is just one of many factors influencing overall capability.
Make sure to monitor temperatures while using it at 0. Reviews say the 9900KS can handle it, though your motherboard might not.
Hey, thanks. The avx setting seems to be what i was looking for. I changed it to -4 and when running prime95 all clocks are sitting on 4.6ghz. So it seems that the auto function has a value of -5.
I use my pc almost exclusively for gaming; do you have any idea if those avx funtions are being used in games nowadays? If not, i don't see any reason why i shouldn't keep it on auto.
I'm happy to hear that was the answer, it seems to be the ideal situation.
Only a handful of games utilize AVX instructions – the only one I recall without checking is Battlefield V, which reportedly uses them.
I’m writing this informally since there’s no official confirmation I’m aware of, but on BF V forums it’s treated almost like a fact.
There are several hints suggesting it might be accurate, and I think it’s likely correct.
Mostly enthusiasts who have overclocked their CPUs mention that running BF V at the AVX offset frequency works well.
A few other titles also fit this pattern, though it hasn’t been widely reported for upcoming games yet – I don’t know how it might evolve in the future.
An AVX offset of 5 makes the CPU run slower than the 9900K, which is a significant difference since the processor should handle full 0 offset at default settings, but there’s no issue with that.
Setting it to Auto should not cause any additional problems, unless Auto changes its setting unexpectedly – which would be unusual if it did, you should be okay.