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Polaris Bios Editing ( RX5xx / RX4xx ) - Page 216

post #2151 of 3318
It's going to throttle no way around it but way cooler running... Set this temperature limits higher and not throttle yet temps continue well past 80-90C...

Sapphire_RX580_8GB_BIOS_73C_73C_3667RPM.zip 110k .zip file
post #2152 of 3318
Wow so 580 is pretty much click for clock a 480. If it overclocked better, than I'd believe amd got a better process for 14nm, but no. The reviews got 1475 or so. Even the power draw is similar to overclocked 480s and what the heck, even with 8pin and 6pin connector the sapphire 580 is maxing out the pci-e slot power. Dumb, why not take more from the double pcie plugs?

I'm just glad the 480 price wise shames the nvidiot 1060 with less ram. Lol
post #2153 of 3318
I wanna throw 580 bios on my 480(s) but need reference 580 bios is all... ??? biggrin.gif

I'm thinking the RX 580 is a tuned bios RX 480 with the required higher VDDCI offset ie 1000mv maybe over 900mv RX 480... Which is required for at least another 200Mhz core overclock.

I tried once RX 460 4GB XFX card on Unlocked Sapphire Rx 460 nitro 4GB bios and even know PCB is different it worked...

I think the BIOS would work on any card but the only issue I had was fan would be loud on startup...

Manufacturer: Sapphire
Model: RX 580
Device Id: 1002 67DF
Subsystem Id: 1DA2 E366

Visiontek 8GB RX 480

0x1002 - 0x67DF
0xB37 - 0x1002
Edited by chris89 - 4/18/17 at 8:07pm
post #2154 of 3318
Just think of it... If the blower was 50% longer and merged with the rest of the assembly connecting to the memory/ vrm plate... We could see epic proportions of thermal performance... Possibly 50-60-70C max Core/ VRM at or near 2Ghz on the Polaris 10...

Main issue with Polaris 10 is the tiny core heatsink and it's lack of connection with the memory/ vrm cooling plate which is adetquately size for length... Just needs to be put to use... Distribute the core/ memory/ & vrm power heat across the entire card by the main huge new core heatsink and plate merged together like 290x cooler... that's it... card is perfect as is well darn near for what it is...



The RX 500 series reference looks decent but it's gonna be spitting tons of heat into the case like the various others that do the same thing... Not to mention a reduction in heatsink "Height" making it a thin and narrow ever smaller heatsink... like the single RX 480 heatsink cut into 3 pieces and merged side by side... more length yet still same lacking thermal performance...

Maybe if the fans angle was changed ever so slightly... even some spacers on the fan mount screws to angle the blowing of the air from the fans towards the "Exhaust" ie out of the case... Otherwise if there is a DVI port then 75% exhaust inside the case raising HDD temps and CPU temps among everything else by 10C at least over time... If an angle existed on the fan's mounting position then we can minimize the exhaust inside the case and try and get 80% of the hot air OUT and only 20% will go into the case... Greater fan angle could be 95% out 5% in...


Edited by chris89 - 4/18/17 at 9:37pm
post #2155 of 3318
I'm not sure they changed the vddci, if the chip is better yield you can do those clocks already on 480.

For the heat output, since I had my 7950, I cut slotted holes on the side of the case at the level of the card exhaust. Then I used clear packing tape to duct the card exhaust out the side. Much better than like you said, heart recycling into the case, and no need for more cooling flow besides what cpu/hdd/psu needs.

Finally amd realized multi Mon was wasting too much power because of full mem clocks.
But with 7950, I modded bios to use regular 2d, 300mhz mem clock on multi mon with no problems! So I don't understand why they keep insisting to use full clocks for it, no need!
Any time you go to full memory clock, the voltage of the memory sets the minimum vcore. Even if you are at 300 core, it will use 1.0v if memory at 2000. I like to run my memory at 0.9v (set in watt man) because of that, so I can run dxva or multi mon 300 p0 or 700 mhz p1 at 0.9v instead of ridiculous 1.0v
Edited by robnitro - 4/18/17 at 10:37pm
post #2156 of 3318
Hi all- I am new here :-),
Just registered to let you know that it's possible to flash RX 5X0 on RX 4X0 :-)
I have Sapphire RX 470 Nitro 4GB 1260Mhz model and I was able to flash the RX 570 4GB Nitro that I got from Hilbert Hagedoorn @Guru3d.
http://forums.guru3d.com/showthread.php?t=413958

All works fine, was able to install the latest driver without a problem :-).
post #2157 of 3318
Performance gains? post screenshots thumbnails also... Drivers without driver patch?!? haha
post #2158 of 3318
Performance gains? it's now performing as RX 570 Nitro, it's just an OC from 1260Mhz to 1340Mhz lol.
it's gets hotter, and why would I need to patch the driver if it thinks I have RX 570? it's not like I have edited the Bios.
http://www.3dmark.com/3dm/19377822
https://www.techpowerup.com/gpuz/details/259m2

GPU-Z log during Benchmark:
https://ufile.io/cfq3t
Edited by Hwgeek - 4/19/17 at 4:27am
post #2159 of 3318
Right on I was thinking the rx 500 series bios was special in no need to mod driver to work.. haha
Nice
post #2160 of 3318
Has anyone extracted the BIOS from a Sapphire Nitro RX 580 4GB?
Vofira
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Vofira
(23 items)
 
  
CPUMotherboardGraphicsGraphics
FX-8350 ASUS Sabertooth 990FX/Gen3 R 2.0 Sapphire Radeon HD 7870 XT Sapphire Radeon HD 7870 XT 
RAMHard DriveHard DriveOptical Drive
Radeon Gamer Series  Samsung 840 Series WD Black ASUS 
CoolingCoolingCoolingCooling
Zalman Reserator 3 MAX Noctua NF-F12 Noctua NF-S12A Noctua NF-S12A 
CoolingCoolingCoolingOS
Noctua NF-S12A Gelid Slim Scythe Slip Stream Slim Windows 7 Ultimate 64 
MonitorMonitorKeyboardPower
PlayStation 3D Display Dell 1704FPT Dell SK-8115 Cooler Master 700 
CaseMouseAudio
Thermaltake Commander MS-I Logitech M510 Sennheiser HD 598 
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