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5900X single core question

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Joined
12 Feb 2016
Posts
30
Hey,

Is there anyway of getting the single core performance to stay a constant speed. For example my PBO is on and offset +150Mhz , -10 on all cores. But when gaming the boost will go vary from 4.7 to 5.1Ghz. is there anyway of having it set say at 4.9 constantly. My cooling isn't a problem as it never goes above 70 with 115i 280Mm Corsair AIO cooling.

Cheers
 
I tend to use the part of the motherboard bios called amd overclocking - to set a static oc. It depends on what motherboard that you have as all the bios's are different and they call things differently. I am most used to gigabyte (and for my wifes pc - I managed to set an static oc on those gigabyte boards under amd oc just by entering the vcore and multiplier) but my daughter has a asus and thats a bit different and I just got my son an msi x570 for xmas and I am still a bit puzzled about how to set oc's on that one. (it doesnt help when my son and daughter and wife just want to use their pc's and dont want me messing when they think it working perfectly fine).

so what motherboard do you have?
 
I tend to use the part of the motherboard bios called amd overclocking - to set a static oc. It depends on what motherboard that you have as all the bios's are different and they call things differently. I am most used to gigabyte (and for my wifes pc - I managed to set an static oc on those gigabyte boards under amd oc just by entering the vcore and multiplier) but my daughter has a asus and thats a bit different and I just got my son an msi x570 for xmas and I am still a bit puzzled about how to set oc's on that one. (it doesnt help when my son and daughter and wife just want to use their pc's and dont want me messing when they think it working perfectly fine).

so what motherboard do you have?

I have the x570 gigabyte auros elite MB , 750 sonic gold plus 3600 corsair ram. Latest bios update too.

So a constant overclock cant be done with PBO alone?
 
I have the x570 gigabyte auros elite MB , 750 sonic gold plus 3600 corsair ram. Latest bios update too.

So a constant overclock cant be done with PBO alone?
No, it does not use PBO. It sets a static all core overclock and I think that it disregards any automatic overclocking behaviour like PBO.

for your gigabyte board go into the bios and:
choose the SETTINGS tab;
choose AMD OVERCLOCKING;
click ACCEPT;
choose MANUAL CPU OVERCLOCKING;
then you can simply change the CPU FREQUENCY (in hz) - for my 3600XT I have entered 4450;
and change the CPU VOLTAGE (in mv) - for my 3600XT I have entered 1300.

previously for my 3600 I think that I was having something like 4200 hz and using say 1320 mv (for a mild overclock) - I did push it more to say 4.3 ghz using 1.35v but it didn't give me any noticeable performance boost but yet generated much more heat. I( have just got a 5900x and put it in my sons pc but as he doesnt want me to mess with it its still stock.

I suggest that you use HW monitor or HWiNFO64 and see what (voltages and) frequency the cpu automatically goes to and then dial down the max frequency by say 200 hertz and then keep reducing the voltage - I bet that you can get all cores working near to their max frequency and yet have much lower voltages - you could start by trying an all core overclock as described above starting at 4700 hz (or even 4900 hz like you want) using a voltage of say 1.35v (and if that works then gradually reduce).
 
Ok thanks for the advice. I think I'll leave it and not manual OC..I read from.a few articles to just let PBO do its job and use the curve optimization if you need. I'm currently getting boosts of 5.15 during gaming and lows of 4.7 so probably average is 4.9 anyway.
 
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