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5800X Boost set to 5050Mhz all cores with AMD Curve Optimizer

My 240 AIO is at the front. I dont like it at the top because of where my PC is under the desk in its own side compartment there is nowhere for the hot air to go. I have a hole at the back of the desk for the exhaust fan. I find at the front is a lot better due to cool air as above and it doesnt affect the graphics card too much. Its also a great place to put AIO's if you use them with a GPU too the results are pretty good. I just prefer in at the front and out at the back airflow.

New Beta BIOS released yesterday for my motherboard but forgot to try it yesterday will see what it brings today.
 
varkanoid said:
My 240 AIO is at the front. I dont like it at the top because of where my PC is under the desk in its own side compartment there is nowhere for the hot air to go. I have a hole at the back of the desk for the exhaust fan. I find at the front is a lot better due to cool air as above and it doesnt affect the graphics card too much. Its also a great place to put AIO's if you use them with a GPU too the results are pretty good. I just prefer in at the front and out at the back airflow.

New Beta BIOS released yesterday for my motherboard but forgot to try it yesterday will see what it brings today.
Click to expand...

Yeah exactly, front mount AIO intake will lower CPU temps by about 10-15C, at the cost of higher GPU and component temps. I'm still undecided as under normal gaming loads my temps are okay, it would really be for those Cinebench temps. I'm going to hold out until I have a 6800xt in there.. depending on the heat output into the case from that over my 1080Ti..

Good to know re BIOS update! Let us know.. I got a busy day with work so won't be able to install till later.. will hold out for some feedback from others as going through the entire config again after just getting it max tweaked is a pain

edit - nothing live yet for MSI x570 tomahawk bios, last version Nov 16
 
Similar BIOS to MEG Unify I expect.
Version 7C35vA82 (Beta version)
Release Date 2020-11-1

To all the Tomahawk owners, when you enabled Curve optimizer in BIOS and change curve settings, when you exist BIOS does it say anything has changed? On the Unfify it detects no changes were made. There are also two areas the curve settings can be set. Each area has slightly diffrent settings, if you change one, settings in the other do not change. e.g. In OC settings, set +200Mhz. this will no show when you access BIOS settings through the advanced section.

I expect the PBO 2 and curve optimizer settings are in their infancy so just have PBO enabled for now and no other settings set

I re-pasted my CPU with 5 dots according to this Noctua review article and picture. Temps seems to have gone down slightly so see idle 26c low and 81c max (Cinebench R20) Paste was applied before jsut as one large grain of rice in the middle of the CPU

https://www.vortez.net/articles_pages/noctua_nt_h2_review,3.html

https://www.vortez.net/articles_thumb/42872_noctua_nt-h2_instructions.jpg
 
Guest2 said:
Similar BIOS to MEG Unify I expect.
Version 7C35vA82 (Beta version)
Release Date 2020-11-1

To all the Tomahawk owners, when you enabled Curve optimizer in BIOS and change curve settings, when you exist BIOS does it say anything has changed? On the Unfify it detects no changes were made. There are also two areas the curve settings can be set. Each area has slightly diffrent settings, if you change one, settings in the other do not change. e.g. In OC settings, set +200Mhz. this will no show when you access BIOS settings through the advanced section.

I expect the PBO 2 and curve optimizer settings are in their infancy so just have PBO enabled for now and no other settings set

I re-pasted my CPU with 5 dots according to this Noctua review article and picture. Temps seems to have gone down slightly so see idle 26c low and 81c max (Cinebench R20) Paste was applied before jsut as one large grain of rice in the middle of the CPU

https://www.vortez.net/articles_pages/noctua_nt_h2_review,3.html

https://www.vortez.net/articles_thumb/42872_noctua_nt-h2_instructions.jpg
Click to expand...

It says nothing changed but it does apply.

As for paste, I did the spread method with credit card to cover entire thing with thin, even layer
 
schoenzy said:
It says nothing changed but it does apply.

As for paste, I did the spread method with credit card to cover entire thing with thin, even layer
Click to expand...
The curve optimizer doesnt seem to work at all for me.

I tried -15 and -5 on all cores and Cinebench R20 crashes almost instantly. I did set an all core manual overclock to 4.75Ghz with I think 1.40V. This worked fine and resulted in this

elOWFfA.png
 
Guest2 said:
The curve optimizer doesnt seem to work at all for me.

I tried -15 and -5 on all cores and Cinebench R20 crashes almost instantly. I did set an all core manual overclock to 4.75Ghz with I think 1.40V. This worked fine and resulted in this

elOWFfA.png
Click to expand...
The key is to pick the right auto overclock value. If you have 200Mhz set, you will probably crash unless you fine tune the curve.

Try 100Mhz, and your first 6 cores at -5, the next 6 cores at -10 and test stability. If it’s stable try increasing values further in steps of 2.
 
So I set my Curve to -15 all cores
PBO 200mhz
Ran Cinebench and just managed to break 6000 with all cores boosting to 4.7ghz and 1.31v. So I gained about 100 points.
Apart from that PBO and the Curve seem to do bod all on my system.

(just did a quick 2nd run and got 6104)

34IGD67.jpg
 
varkanoid said:
So I set my Curve to -15 all cores
PBO 200mhz
Ran Cinebench and just managed to break 6000 with all cores boosting to 4.7ghz and 1.31v. So I gained about 100 points.
Apart from that PBO and the Curve seem to do bod all on my system.

(just did a quick 2nd run and got 6104)
Click to expand...

Honestly for me Cinebench isn't the best indicator of slightly lower load performance like gaming, largely because I hit temp limits that I don't hit elsewhere. Try a cpu-z bench or run a game and see where your cores are sitting.
 
schoenzy said:
Honestly for me Cinebench isn't the best indicator of slightly lower load performance like gaming, largely because I hit temp limits that I don't hit elsewhere. Try a cpu-z bench or run a game and see where your cores are sitting.
Click to expand...

If I try and run a game the odd one I am currently playing it hardly breaks a sweat. 48c. I need to play something like RDR2.
 
varkanoid said:
So I set my Curve to -15 all cores
PBO 200mhz
Ran Cinebench and just managed to break 6000 with all cores boosting to 4.7ghz and 1.31v. So I gained about 100 points.
Apart from that PBO and the Curve seem to do bod all on my system.

(just did a quick 2nd run and got 6104)

34IGD67.jpg
Click to expand...

This doesnt look correct to me.

If it was all cores boosting to 4.7Ghz the score would be the region of 6200 - 6300.
I get 6028 with PBO left on auto and no other settings.
All core boost stabilizes at 4550Mhz (seen in Current Core clock, not max core clock)
1.325 V on all cores for me and hits 80c (Noctua nh-u14s)

When I set manual all core boost to 4.75Ghz, quite high voltage is required to keep it stable resulting in high temperatures (~93c)
Single core boost pushes with Auto PBO to 4850Mhz
 
LtMatt said:
Yes, you need to monitor scores and look for clock stretching as you can get a nice bump in clock speed but actually score less points.
Click to expand...
Easy to fall into clock stretching using negative offset. But curve optimizer shouldn't go there I would think.

Btw anybody notice LLC has no effect? Max vdroop and min vdroop ends up in same full load voltages and performance (and temperatures). On Intel there would be 0.15V difference at full load.
 
Last edited:
varkanoid said:
Anyway I've tried it now and saw a slight difference will set it back to off and not think about it again.
Click to expand...
Probably for the best. I’ve left PBO on auto, at least until im using a none beta bios.
The previous bios would crash with pbo on auto and with no other settings changed.
 
Tried to address my intermittent instability. Had an occasionally crash after 10-20min in game

Found Kraken 1.1 javascript benchmark would reliably crash within 3-5 runs. This is with settings I previously confirmed stable by countless Cinebench, Aida, CpuZ, Memtests and geekbench runs.
But Kraken operates at that low load which triggers high boost clocks often and on many cores.

So to make it stable had to drop PBO boost whole 75MHz lower!
 
alec said:
Btw anybody notice LLC has no effect? Max vdroop and min vdroop ends up in same full load voltages and performance (and temperatures). On Intel there would be 0.15V difference at full load.
Click to expand...

LLC turns my 5950x into a space heater as I raise the levels, but on auto/low it seems a bit unstable (CPU just halts/reboots after random number of minutes with black screen) presumably due to negative curve optimisation and vdroop combining in a bad way.
 
alec said:
Tried to address my intermittent instability. Had an occasionally crash after 10-20min in game

Found Kraken 1.1 javascript benchmark would reliably crash within 3-5 runs. This is with settings I previously confirmed stable by countless Cinebench, Aida, CpuZ, Memtests and geekbench runs.
But Kraken operates at that low load which triggers high boost clocks often and on many cores.

So to make it stable had to drop PBO boost whole 75MHz lower!
Click to expand...

Yeah I'm worried I'm going to have to drop down a bit. Completely stable in cinebench, cpu-z and gaming with +200mhz, but had a random crash last night simply watching crypto stock feeds.
 
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