Originally Posted by rdr09
Did you play with SOC voltage with SMT off? I had no issue oc'ing my 1600 to 3.9 and the RAM to 3466 CL14 (FLareX, though) using the calculator. I will try your method with the Ripjaws.
You play Witcher 3? How does the cpu handle multi-threaded games with SMT off?
Initially I tried with SOC on auto, either it went to 1.22 volts, or stayed low like 1.1 v on my more aggressive memory oc. I didnt like it riding over 1.2, so I tried:
1.1v SOC, mem crashed or threw too many errors.
said wth, just try 1.2v, 1.2v SOC has been stable. So I left there and haven't messed with it since. Some can argue its not smt, bla bla. I cannot get over 3200mhz ram OC with smt enabled... tried for days. granted 1st gen ryzen, prob the one with the segfault issue or whatever, and early x370 mobo, compatibility is not a selling point here. Ill just leave my data and testing opinion at this, If you have a partially stable memory oc and smt is enabled... try disabling smt and comparing memory errors... I bet smt off will be much more stable. Hopefully 1usmus has seen the pattern or has considered smt a limiting factor and can add input. I assume smt forces the cpu to allocate % of resources on the imc, higher imc usage/resource allocation=less stable overclock and limits oc potential.
How does the cpu handle multithreaded games with smt off? I have basically been living in Overwatch, havent really played anything else, so heads up, and many argue OV is "memory-bound".
Well what I have noticed from testing is this:
lower DPC latency averages.
loose but stable fps numbers. (In the sense I perceived a delay in game when it went from high utilization to low, or low to high. This delay is shorter with SMT off.)
("Were fps higher"? I can't say. Changing 1 Onboard Network Connection affects my fps anywhere from 10fps to 130fps, but if I HAD to form an opinion, SMT ON had higher fps averages OR smoother mouse response (not faster, smoother. I will try to confirm or edit post if I retest, I just might. Kinda wanna see Smt off with higher oc's vs smt on lower oc's and see which has higher fps and lower latency.)
DPC latency higher
System responsiveness higher (fps drop but drop absolutely. System either can either render the image at max fps, or it sinks like a rock to where it can be stable. Very short fps drop delay. I know it sounds contradictory, but HT has a delay when a workload shifts across cores/nodes.)
Edit:New beta bios for ryzen 3000 line flash to mobo, can now do 3466 cl 14 easy peasy with smt. But ive been testing latency of various pc factors and dont recall smt on vs off, i think smt on in general results in lower fps.