In all honesty it is quite easy on Ryzen to undervolt and get great results. You need to know where to look for the settings, but there are several tutorials on YouTube. Optimum Tech has several videos and does a great job explaining what he's doing and showing the results. Setting up PBO+CO is maybe a dozen mouse clicks and entering a value, then testing for stability. I had to do more tinkering with my son's 5600X as it wasn't stable at -30, so it took a little bit longer. My daughter's 7600X worked right away at -30. She played all day yesterday and not a single crash so I think we got a little lucky with the silicon. At -30 I see no need to even try and get better per core results and honestly not sure if you can get any lower. You can see it in action here:That's amazing!
You make it sound so easy
Going AMD is rewarding when one takes the time to tinker. I guess that's why AMD users are so in love with their CPUs
Would you mind if I request you for one run of Geekbench 5, one run of Rapydmark High setting and MemMaxx2 for dessert?
Best score is Det0x's 109.367 for 32 threads so your score with 2.66 times less threads is 2.61 times slower which seems to be great!
Looks like I'm in line then. I think I could squeeze more performance out of it if I spent some time playing around. If it was my system I might do that, but I think this is good enough for her. Time to let her enjoy it. She has only played games and watched some Youtube so far. She streams every now and then but maybe with a stronger PC she might do it more often.Best score is Det0x's 109.367 for 32 threads so your score with 2.66 times less threads is 2.61 times slower which seems to be great!
13600K GB5 score: https://browser.geekbench.com/processors/intel-core-i5-13600k
Your CPU is beating the 13600K's average ST score easily and per thread MT score comes out to be 955.83 whereas 13600K manages only 758.8 per thread with 20 threads. You got stronger threads!
Watch the video I linked in my prior post. Curve Optimizer is in the BIOS. The location varies by vendor, but it will be in some version of an overclocking or tweaker settings. There will be an advanced CPU settings option where you will enable PBO. At that point you can apply the settings to "all core" or "per core". Make sure you are applying a "negative" setting and not "positive". It seems that the 7900x and 7950x are slightly harder to do "all core" due to the high number of cores, but Mark was able to set his to -25 so it is possible. Then save the settings, boot into Windows and run some benchmarking software like Cinebench or Prime 95. If it passes at the settings you can try going even lower. If it doesn't then raise it by 5 and try again. Max Temp is a setting that allows you to set the max temperature the CPU can hit. This is also in the video I posted above.Thanks, but devil is in detail here
Where do i "find" curve optimizer? BIOS or some of those AMD tuning apps - ryzen master i think? Do i set that value separately for each core or for all of them across the board? How do i test for stability, usual way like Prime95 or something else? If it fails, how do i know which core is the culprit? What do you exactly mean by "finding" max temp? I saw some tutorial on youtube by that Spatter? fella on this particular topic and there were some other steps to do you dont mention.
I cant set the RAM to EXPO, as i sadly bought non-expo kit.
It may seem easy to someone with your experience in these matters, but i need to know more specifics.
Bios. Since I don't know your motherboard, just look in menus about cpu condif. Look for "Curve Optimizer". Let me look and see of I can find it in the manual for mine.Thanks, but devil is in detail here
Where do i "find" curve optimizer? BIOS or some of those AMD tuning apps - ryzen master i think? Do i set that value separately for each core or for all of them across the board? How do i test for stability, usual way like Prime95 or something else? If it fails, how do i know which core is the culprit? What do you exactly mean by "finding" max temp? I saw some tutorial on youtube by that Spatter? fella on this particular topic and there were some other steps to do you dont mention.
I cant set the RAM to EXPO, as i sadly bought non-expo kit.
It may seem easy to someone with your experience in these matters, but i need to know more specifics.
Mark uses -25 because he has one type of load that uses all cores. No deviation from that load. Extreme edge case. If he too tested with CoreCycler he would end up with problems.
I have 2 right now that are only running a video card, using 1 to 2 cores. On 24/7, no problems.
CoreCycler does take a long time to run in order to properly find instability per core. I can understand the desire to set and forget in Curve Optimizer.
Took me about a week to tune all 16 cores on my 7950X. Ran it between 18 to 24 hours for each of those days. Y-Cruncher AVX512 two threads per core - 9 minute test per core. Also ran Prime95 large FFT two threads per core - 6 minute test per core.
We few weeks back all 3 ran @100% load for 2 weeks for so 24/7 for the PG race. Not one single problem out of 3 7950x@ CO= -25 and less than 95c temp. Only one has a big 420 AIO, the other 2 are fairly high end air. (one dark rock pro 4 ($90?), and one a deep cool ak620, $50 cooler)
wattage less than 170, and performance within 95% of default, and uptime=100% and errors=0
Well, then I will probably never have an issue. F@H does not use more than 5% of the resources and is most likely not bursty. The rest of the time its 100% load
That was the point I was getting at. -25 CO across all cores works for you.
One of the 2 that are not busy is windows, the other is linux. What would make you believe that my CPU was good at -25 ? give be a test to run, and parameters. Has to be free.
Well, the "There cannot be ANY other load on the CPU when running it." kills this test. I have work to do.
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