Posted at Toms Hardware yesterday.

CPU Benchmarks and Hierarchy 2022: Intel and AMD CPUs Ranked | Tom's Hardware (tomshardware.com)

I have the i9 12900K for over 2 weeks now. Indeed a powerful chip.

You definitely see a difference in MSFS. The only thing that comes into play now is the optimization.

12900K also generates a lot of heat, I can tell from my own experience that my AIO Cooler Corsair H150i Capellix 360mm has a hard time to keep it cool when asking a lot from the CPU's performance.

Stress testing soon brings the temps up to high 80-ies when all cores go to 5 ghz/4ghz. And that is with HT off and locked freqs at 5.1 PC/4.0 EC

With HT on sure it would rocket up to the TJ.

Nice chip, still needs strong cooling.

59 minutes ago, Piotr007 said:

12900K also generates a lot of heat, I can tell from my own experience that my AIO Cooler Corsair H150i Capellix 360mm has a hard time to keep it cool when asking a lot from the CPU's performance.

 

I'm cooling mine with a Noctua NH-D15. No issues at all. quite cool. 😀

 

59 minutes ago, Piotr007 said:

Stress testing soon brings the temps up to high 80-ies when all cores go to 5 ghz/4ghz. And that is with HT off and locked freqs at 5.1 PC/4.0 EC

 

I have HT on. Don't overclock, its not required. And activate the Intel power limits by disabling MCE. You wont see much difference in performance, temps will be well under control and fans will be quiet. Just because MCE is there, doesn't mean you have to use it. 

 

59 minutes ago, Piotr007 said:

Stress testing soon brings the temps up to high 80-ies

 

We build PC's to be gaming and simming machines, not dedicated stress test running machines. Stress tests are designed to push a CPU to the limit, with demanding instruction sets at play, so yes, temp will be high. Which stress test? If its Cinebench R23 it will be hot, it runs AVX.

Again, my advice is don't bother to overclock, its just not required. And stick to Intel power limits.  In the longer term, when the system is getting long in the tooth, you will have to option to boost performance then, when you need it. Even tech guru channels like Jayz2Cents aren't bothering to OC.

 

Edited June 7, 20223 yr by martin-w

4 hours ago, martin-w said:

 

I'm cooling mine with a Noctua NH-D15. No issues at all. quite cool. 😀

 

 

I have HT on. Don't overclock, its not required. And activate the Intel power limits by disabling MCE. You wont see much difference in performance, temps will be well under control and fans will be quiet. Just because MCE is there, doesn't mean you have to use it. 

 

 

We build PC's to be gaming and simming machines, not dedicated stress test running machines. Stress tests are designed to push a CPU to the limit, with demanding instruction sets at play, so yes, temp will be high. Which stress test? If its Cinebench R23 it will be hot, it runs AVX.

Again, my advice is don't bother to overclock, its just not required. And stick to Intel power limits.  In the longer term, when the system is getting long in the tooth, you will have to option to boost performance then, when you need it. Even tech guru channels like Jayz2Cents aren't bothering to OC.

 

Hi Martin,

Yeah I did some testing with Prime95. I was just curious. It is nice that this chip does not need all too much voltage. Perhaps it also depends on the mobo.

An OC is perhaps as you say unnecessary due to the sheer stock power the CPU delivers right off the bat.

However, as I tested different settings, I noticed a lot more stutters with HT on. So on that matter I chose to turn it off altogether, also for the temps.

The performance for the rest is all the same. In the future I can turn it back on, nice to have that flexibility.

12 hours ago, martin-w said:

I'm cooling mine with a Noctua NH-D15. No issues at all. quite cool. 😀

Ugly as sin (brown and beige fans), but a monster in both size and efficacy for an air cooler. Love it!
(There is the NH-D15 chromax.black for anyone considering an air cooler and has a case with a glass panel side).
 

14 hours ago, Fielder said:

Posted at Toms Hardware yesterday.

CPU Benchmarks and Hierarchy 2022: Intel and AMD CPUs Ranked | Tom's Hardware (tomshardware.com)

Thanks for sharing. I'm very happy to see my CPU at the top of the list for gaming. It was a treat to myself.
It throws all the L3 cache and IPC at gaming and doesn't need to (indeed, cannot) be overclocked. Keeps the heat and power draw down, while brute forcing its way through complex and demanding flight sim scenarios. Love it!

For some reason my cpu will go up to 100 real fast with Prime 95.

When first boot up the sim it will be 45 to 55 C

MSFS flying will be 68-78 C

Prime 95 will zoom to 100 in about 30 seconds (so I didn't let it run more than a half minute). 

Is lowly Ryzen 5 3600.Thinking about getting a R5 5600X (under $200) (only because I think my present cpu is going bad). It was shutting down the system with C over 100 in MSFS because the water cooler was bad. I replaced the water cooler and now the cpu stays under 80 in hard MSFS use. But the cpu maybe sort of ruined (I say that because it jumps up to 100 so fast in Prime 95.).  The R5 5600X only draws 65 watts (as does my present R5 3600). If this cpu starts giving trouble, I will replace it.

6 hours ago, F737MAX said:

I'm very happy to see my CPU at the top of the list for gaming. It was a treat to myself.

It throws all the L3 cache and IPC at gaming and doesn't need to (indeed, cannot) be overclocked. Keeps the heat and power draw down, while brute forcing its way through complex and demanding flight sim scenarios. Love it!

If I were building a PC for MSFS right now, I reckon your 5800X3D/3080 Ti combo gives the best bang for buck of all the current CPU/GPU offerings.

Edited June 8, 20223 yr by Reset XPDR

10 hours ago, F737MAX said:

Ugly as sin (brown and beige fans), but a monster in both size and efficacy for an air cooler. Love it!
(There is the NH-D15 chromax.black for anyone considering an air cooler and has a case with a glass panel side)

 

Mine is black, Chromax, looks lovely. All my case fans are Noctua too, also black. Gone are the days when black wasn't available. 👍

 

 

18 hours ago, Piotr007 said:

Hi Martin,

Yeah I did some testing with Prime95. I was just curious. It is nice that this chip does not need all too much voltage. Perhaps it also depends on the mobo.

An OC is perhaps as you say unnecessary due to the sheer stock power the CPU delivers right off the bat.

However, as I tested different settings, I noticed a lot more stutters with HT on. So on that matter I chose to turn it off altogether, also for the temps.

The performance for the rest is all the same. In the future I can turn it back on, nice to have that flexibility.

 

The later versions of Prime do run AVX and are notorious for very high temps. Give it a bash with Cinebench. I never use Prime anymore. 

There is the AVX offset in the BIOS too of course. If you set an offset it will drop the frequency if it encounters AVX. 

Keep your BIOS up to date too, its a new platform, updates come frequently and improve performance and stability. You might find your HT stutter issues improve. 

I was getting lock up issues, and also issues with keyboard. I had to set XMP off. However, after uninstalling Citrix from my system and installing the latest BIOS that has memory compatibility fixes... all is well and XMP is now trouble free.

Something else I had to do with this platform is modify my normal fan curves. Asus boards have an easy fan curve utility within the bios that's reminiscent of Asus Fan Xpert. No need for Fan Xpert 4 on your hard drive at all anymore. I had to change the curve so that the fans began to ramp up at a higher temp, to avoid the fans spooling up unnecessarily for minor temp spikes. Nothing worse than the fans revving up and down when just messing about on the internet. I adjusted the spin up/spin down delay too.

Edited June 8, 20223 yr by martin-w

4 hours ago, Fielder said:

For some reason my cpu will go up to 100 real fast with Prime 95.

 

Yes, Prime is notorious for that. Its AVX instruction sets that are hammering your CPU well beyond the norm. Many aren't using Prime anymore, but if you wish too, there is a tweak you can make to stop it running AVX. Or you can use an older version that doesn't run AVX. There are also different Prime tests you can run that don't kick the CPU's butt with AVX. 

I just use Cinebench R23 these days. Yes, it still runs AVX but not as aggressive as Prime. If you can run R23 on a loop for 20 minutes or more you are usually stable. The true test of stability is in terms of the programs you run day to day. 

Edited June 8, 20223 yr by martin-w

Things got better when I turned off hyperthreading (my bios calls it SMT (simultaneous multi threading). My cpu can take Prime 95 for a very long time, maybe a half hour with SMT off. With SMT on I don't dare let it run over 2 minutes. It's like night and day cooler with SMT off.

 

 

Note the temps in 4K AMD about the same under load in gaming.

(2) RTX 3090 + i9 12900K vs RX 6900 XT + Ryzen 9 5950X - Test in 1080p & 4K - YouTube