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Polaris Bios Editing ( RX5xx / RX4xx ) - Page 163

post #1621 of 3317
hey chris heres shadow of mordor 4k with new bios still dropping clocks and volts on top card.
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post #1622 of 3317
Try manually setting both GPU 1 & 2 fan to full speed and then test... What's the max rpm the fan can do? 2500rpm? I'm sure it should be able to do 3,000rpm.

It's normal to drop but how low? If the fan RPM is not enough to cool Hotspot then we only have the option to raise temperatures or lower max clocks. It's normal to throttle clocks when the Hotspot and Max Temp is hit.. 93C here.

Jeztur2003_1367mhz_2067Mhz_93C_93C_93C.zip 110k .zip file

Jeztur2003_1267mhz_2067Mhz_93C_93C_93C.zip 110k .zip file
Edited by chris89 - 3/27/17 at 4:56pm
post #1623 of 3317
Yeah around 2500 24?? Temp isn't the issue the top card starts down clocking and undervolting immediately so setting the fan 100 percent will not effect this. The only thing that's seems to keep the top card at set clock is setting the temps to the original .153 bios of 90,94,105 but ofcourse it gets to hot then at 4k even with fans maxed 2500 on both cards.
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post #1624 of 3317
Ok just seen the new bios I'll test and report back. The top card would throttle down close to 1000
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Double Dragon
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post #1625 of 3317
Yeah it's not the Monitorable temps that are the issue. They look fine. It's other components on the PCB that get too hot, I can point out which one's in particular. However not many are willing to break down their card to fix it.

So we have to raise the temperatures so the hot components are allowed to get real hot to hold a particular clock.

However at 1267Mhz, it should not throttle at 93C. It won't come near 93C on Core or VRM, other chips will see 93C and throttle possibly. Throttling occurs when these temperatures are reached on the PCB.

Which we cannot monitor these other chips that are this hot.

I outlined in YELLOW, the monitorable chips. The ones in RED are the chips that hit the Hotspot Temperature. Must be cooled with a Pad to heatsink contact to avoid throttling.

The front to the left side is Core VRM, rear 2 VRM is Memory VRM. Others are various hot chips.


Edited by chris89 - 3/27/17 at 5:14pm
post #1626 of 3317
card crashed to desktop with device error on 1367 interestingly i set fans to 100 they spooled to 2700 and the clocks stayed 1367 and usage 100 till it crashed.
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post #1627 of 3317
1267Mhz then biggrin.gif
post #1628 of 3317
Giving those a whirl now. That's the highest I've seen the fans go strange...
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post #1629 of 3317
IBT is fine, I even clocked to stock and ran ram at 1333. The bsod is from the ati driver. Maybe newer ones use more of the core.

I remember with the 7950, when there was a new update driver, some people with "stable" gpu oc, started to get crashes complaining the driver at fault. On mine, which passed occt errors 0 full load, I never had an issue.
What new drivers do is use different shader units combinations etc, so they might have been stable until the driver was more optimized and used more of the chip... getting better performance too...

It's this chip that is bottom barrel lol.
At least I can pull 150 watts and 1260 stable from it, no throttling at all smile.gif

BTW, I found my problem injectors, 2 of em, argh BMW quality sucks- it's because they had leaky plastic covers... Anyway, hopefully this weekend I'll be able to swap em and recode them. It's a diesel that gets good mileage and hauls ass though. It can be chipped (bios modded lol) from 265hp to around 380 hp smile.gif

Edited by robnitro - 3/27/17 at 5:35pm
post #1630 of 3317
Thats unreal robnitro haha yeah injector failure is a pain. Go OEM if not tuning. Aftermarket are often bad upon installation.
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