Sorry for reviving an old thread but with the updated system bios, were you able to undervolt this card to help with power while unlocking the shaders? Any undervolt sticking with latest bios? Even if shaders aren't unlocked undervolting should help with fan noise that I'm curious about.I upgraded the hp bios on this machine to 2.23. It seems to have unlocked everything, so maybe the old bios i had was messing things up, or im an idiot. I unlocked 1024 cores, went into PBE and set the rx560 power limit to 50w, changed the memory to 1750mhz along with uber timings, and saved. Now im getting about 5900 graphics score (firestrike) compared to 4200 graphics score, which is perfect 42% linear scaling comparing 50w to 35w. I also have the upgraded (from i5 8500t) i7 8700 TPL (turbo power limits) limited to 50w as well using throttlestop and task scheduler. Quite a peppy little 1 liter machine i must say. Temps are still well within range usually hovering around 80c and peaking about 85c for both GPU and CPU. This has to be near the limit though as hwinfo64 shows 135w system power peaks and i dont know how much further would be safe to push the 150w power brick. Try at your own risk.
You already should have 1024 shaders active, since this is Polaris 21 XT BIOS. I cannot do anything with it. Post GPU-Z screenshot if you can.hi guys! I was wondering if someone could unlock my bios? would be much appreciated thank you!
here's a screenshotYou already should have 1024 shaders active, since this is Polaris 21 XT BIOS. I cannot do anything with it. Post GPU-Z screenshot if you can.
I think I have the same model as you. Could you help me do the same thing with mine? I'll attach my vbios dump.This gpu runs at 1069mhz at a so called 35w limit, power spikes 45-50w. No matter what setting i try in PBE, adjusting core mem mhz, power watts amps... nothing will actually change even though PBE sees the modified saved bios settings. I think somewhere in the HP mainboard or bios is an external limiter to the funky proprietary 8x pcie connector that this gpu uses. Because of this, even unlocking the shaders will put up nearly the exact same benchmark results, except maybe slightly lower scores with slightly higher temps. I have tried undervolting but nothing changes its 0.900v core voltage, even at idle. there are some fluctuations like 0.863v or 0.913v or whatever, but the card is hard stuck.
Using MSI AB, open, settings, extend official overclock limits, close, restart (never open msi ab again)... this lets AMD Catalyst tuning allow you to play with core mhz and mem mhz. But MSI AB has no control, and further vbios editing via PBE doesn't change anything at all related to watts amps core mem mhz. The hex editor obviously works, but again no real change in performance.
Also this elitedesk is special because it is the official dgpu version with a 150w power brick, unlike other standard 800 g4 or 705 g4 models that only come with a 90w power brick. These dgpu models also only come equipped with an intel "t" 35w variant cpu. Replacing with a non "t" cpu, as i have with a locked i7-8700 will further power limit the dgpu by about 25%. The i7-8700 without gpu load will go to 88w even though technically it is turbo limited to 122w, but performance loss seems negligable. You can use Intel XTU to artificially power limit the cpu to mimick a "t" cpu of 35/45w limit and gain back all the gpu(rx560) performance that is lost (the actual power limit is about 50w/50w before the gpu starts to suffer performance loses. The mainboard(motherboard) clearly is shunted somewhere but i haven't found the interest to find it and it is probably for a good reason.
The only thing i cant figure out is how to undervolt this rx560 as it seems completely locked down to 0.900v. stock clocks, stock overclocked, 1024 unlocked stock, etc, it always hovers around 800-1100mhz under a power virus. Obviously, pulling the voltage down and finding core voltage frequency equilibrium would be the ideal situation.
Curious! Polaris Bios Editor 1.7.6 (last) complains that your BIOS (vbios dump.rom) is non-standard size and that flashing the card could make your card unusable....I'll attach my vbios dump...
Yeah, I did notice the non-standard size thing too. I dumped it using LACT on Bazzite so that might have something to do with it. I think I'm just going to use the one shared by @nikoli707 and make the modifications with PBE he mentioned. I appreciate your help anyway though, thanks a lot!Curious! Polaris Bios Editor 1.7.6 (last) complains that your BIOS (vbios dump.rom) is non-standard size and that flashing the card could make your card unusable.
Here is the modded version - for some reason PBE also changes some bytes upon writing the correct checksum. I find it suspicious, because it never did that before.
Also your TDP seems to be set at only 35W, according to the PBE.
Flash at your own risk!
I tried dumping my vbios again, this time using amdvbflash and it seems to be the correct size this time. Do you think you could help me unlock it again? Also, if its not too much to ask, can you make the edits @nikoli707 mentioned too? I gave it a try myself, but its not my area of expertise and I don't want to mess up anything.Curious! Polaris Bios Editor 1.7.6 (last) complains that your BIOS (vbios dump.rom) is non-standard size and that flashing the card could make your card unusable.
Here is the modded version - for some reason PBE also changes some bytes upon writing the correct checksum. I find it suspicious, because it never did that before.
Also your TDP seems to be set at only 35W, according to the PBE.
Flash at your own risk!
Awesome, thanks so much! And I really appreciate the warning about the byte changes too. I'll probably give it a go anyway and do some tests like you said.Here is the unlocked vbios.rom - this time there were no complaints from PBE, however upon correcting the checksum PBE did change some bytes - again, so for now I did no changes to any of power options, just manually enabled shaders and corrected the checksum.
Please - flash your laptop at your own risk. If you do - test it well and report; observe wattages with HWInfo, see if combined (CPU usage + dGPU (RX560_1024)) is not over your power supply rating.