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3 Posts
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552
November 5th, 2021 15:00
Aurora R10, BIOS 2.2.2 no cpu boost
Hi,
I'm running the R10 with the Ryzen 5900 and the RX 6800XT. When I first fired up the PC (from new) I had a quick look around Alienware command center before I ran the alienware update app. And I swear there where advance tabs with overclocking options. Since updating the BIOS to 2.2.2 these have all disappeared, and what's worse the CPU frequency wont go above 3.3Hz when running cinebench R23. The benchmarking comes out at 16173 should be more like 20000 for the Ryzen 5900. It looks like its not able to run the turbo boost frequency of 4.7hz. Temps stay around 50c so it cant be throttle because of that surely.
The problem only seems to affect multi core running, If I repeat the test on a single core (using cinebench r23 again) i get 4.7Hz and bench marking rating of 1580pts which is consistent with other bench marking numbers on nanoreview.net.
Is anybody else experiencing this on the Ryzen 5900? with Bios 2.2.2
damoz
3 Posts
0
November 7th, 2021 05:00
After a bit more investigation the problem is almost certainty related to the Bios, The bios is setting some very restrictive max cpu power parameters (PPT =76, TDC =100, EDC=165).
Basically at a PPT (cpu socket power) = 76 you can only run a couple of the cpu core's at at full factory boost (i.e.4.7Ghz). If all cores are run the low PPT value throttles all cores to 3.3Ghz. I've tested this on the BIOS 2.2.1 with the same result. So Something must have change during these recent bios updates which has restricted the CPU power parameters with no way of changing them.