So it's happening with the LQ BIOS but on the reference air Vega?
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The AMD Driver Thread
- Thread starter LtMatt
- Start date
Soldato
So it's happening with the LQ BIOS but on the reference air Vega?
It would appear so, we are getting closer.
I'll flash my default bios back on it tonight to see if that clears the bug.
Hope it's not the case because BIOS modification = unsupported config.
Soldato
Why would it only now be a case with the 19.2.x drivers though? It's weird
No idea Tony.
Soldato
The cynical side of me is thinking bloody big coincidence now that Vega7 is launched. Funny the timing if it does turn out to be the case when I roll back later. This has only started to be a problem on the latest 3 drivers, right at the time of Vega7.
Can't have people on Vega64 running custom water bioses allowing for higher power tables and power limits and hitting similar speeds as Vega7 can they
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Soldato
Ltmatt has an LC64 with the same bios in question and he said the issue isn't present for him on latest drivers.
It doesn't affect a real lc64, I have both, i'm not sure why it is doing it.
But from my testing of any lc bios on a reference v64 on 19.2.3
It's not power limited,
It's not thermal, (hbm,hot spot,core)
It's not voltage,
It is definetely driver related, if you umderclock to using just pstate 0 @800mv with a locked hbm p3 state, it will still throttle down.
I think the max power limit is 220w +50%,
But if you use overdriventool you can modify the power limit to whatever value you like.
The lc64 bios has different voltage tables and a 264w +50% at stock.
Soldato
Thanks for your time on this one Dave, it's helped confirm a lot. I wonder if I'll be able to hit the same 1750/1180 clocks (for benching) and 1700/1100 (for gaming) after rolling back to stock bios.
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No worries after watching your vid's I knew something wasn't right. Hopefully we can get it fixed by the driver team.
I don't know how well your card will respond to the stock bios, but hopefully it won't be too much of a hit.
Soldato
flashed back to 1806 bios, I can also confirm the problem is gone using the 19.2.3 driver.
Soldato
That's kinda good to know. How's your overclocking on this bios?
Soldato
I've not messed around to much mate, just wanted to run it back on stock bios with 19.2.3 at default balanced values. Getting late now, bit tired so I'll play around in the morning to see if at least 1700/1100 Is possible using reduced power limits.
The curious in me wants to try another LC BIOS LOL
@shankly1985 EDIT update
You know what mate, I've got a very interesting video to be posting up tomorrow lol. Long story short, for you and the others. Back on the stock bios 1806, 19.2.3 driver, bug does not appear, everything is perfect again. Just back on my old gaming custom profile which is 1700/1100 frequency....the core is maintaining even higher frequency than it did on the LC 8774 Bios
It's maintaining 1690mhz core right across all benches and games using same lower voltages as previous bios. That's only 10mhz down on the set frequency, where as previously on the LC 8774 bios, setting 1700mhz core would normally work out about 1650mhz average when benching and gaming.Might push for 1750mhz tomorrow morning then we truly right back to where we were, but it might actually end up being better in the long run. How things work out.
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Soldato
I've not messed around to much mate, just wanted to run it back on stock bios with 19.2.3 at default balanced values. Getting late now, bit tired so I'll play around in the morning to see if at least 1700/1100 Is possible using reduced power limits.
The curious in me wants to try another LC BIOS LOL
@shankly1985 EDIT update
You know what mate, I've got a very interesting video to be posting up tomorrow lol. Long story short, for you and the others. Back on the stock bios 1806, 19.2.3 driver, bug does not appear, everything is perfect again. Just back on my old gaming custom profile which is 1700/1100 frequency....the core is maintaining even higher frequency than it did on the LC 8774 Bios
Might push for 1750mhz tomorrow morning then we truly right back to where we were, but it might actually end up being better in the long run. How things work out.
GG man
Nicely done guys on finding this bug? Is it a bug with that BIOS? Anyways least you can now enjoy latest drivers.
Soldato
GG man
I'm not sure what happens. Matt said he was running that 8774 bios on his proper LC 64 with latest drivers but he wasn't experiencing the bug. Yet all of us with the flashed 8774 on reference card had the bug.