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Polaris Bios Editing ( RX5xx / RX4xx ) - Page 254

post #2531 of 3452
Quote:
Originally Posted by generaleramon View Post

if someone post some infos i'll add it in the first post thumb.gif

Buildzoid's GPU PCB breakdown youtube playlist: https://www.youtube.com/playlist?list=PLpS0n7xxSadXWGk02NMCMLuav8vjxqvmA. There you can find the PCB analysis of almost every RX 480 and the Nitro RX 580 (the only RX 580 analyzed by Buildzoid as today). Also that link is automatically updated when buildzoid review a new card.

Powercolor Red Devil RX 580, "Normal" and "Golden Sample" (binned gpu): http://news.mydrivers.com/1/528/528579_all.htm (use google translate)
Edited by Vento041 - 4/24/17 at 10:31am
post #2532 of 3452
Quote:
Originally Posted by Vento041 View Post

Thank you for your testing btw I was talking about PCB infos (so which memory chips has that 580, which vrms, which voltage controller, how many phases, how many "real" phases, ... ...)
according to pbe 1.4.1 the gigabyte gaming bios only supports the good old Samsung K4G... Vram Chips
the IR3567B is supported, all readings as they should be; temperatures normal.
post #2533 of 3452
Quote:
Originally Posted by Vento041 View Post

Buildzoid's GPU PCB breakdown youtube playlist: https://www.youtube.com/playlist?list=PLpS0n7xxSadXWGk02NMCMLuav8vjxqvmA. There you can find the PCB analysis of almost every RX 480 and the Nitro RX 580 (the only RX 580 analyzed by Buildzoid as today). Also that link is automatically updated when buildzoid review a new card.

Powercolor Red Devil RX 580, "Normal" and "Golden Sample" (binned gpu): http://news.mydrivers.com/1/528/528579_all.htm (use google translate)

Lol he had the same reaction I did to the voltage controller they used on the nitro 580. I still can't figure out why they didn't just take the original design and put the new phases and better cooler on. The IR controller is a WAY better controller. Yes we get higher amps still, but ugh.
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CPUMotherboardGraphicsRAM
i7 4770k Gigabyte Z87X-UD4H Sapphire Nitro + RX 470 Gskill Ares 
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post #2534 of 3452
Quote:
Originally Posted by robnitro View Post

Oh yeah I recall on the 7950 using different bios gives you different vrm temperatures. Maybe this is why the msi and sapphire 580 bios doesn't work well on my card but powercolor does

So are you using @generaleramon 580 to 480 conversion bios? What's the BIOS based on? Powercolor? Which bios are you running? Is it working well... ? Sorry for all the questions.
post #2535 of 3452
Quote:
Originally Posted by generaleramon View Post

@andypc2013

the link is now in the RX480>RX580 Conversion section

thumb.gif thanks for your suggestion


smile.gif brill thanks smile.gif
post #2536 of 3452
Power analysis of 12v pci-e vs reading.

I took some readings with my DC clamp on ammeter on the +12v (yellow) wires that go to the 8 pin pci-e connector on my XFX RX 480 RS.

Both the 480 and 580 powercolor red dragon bioses read the same current in 3dmark firestrike same fps results, despite my 480 bios saying 140-150w and the powercolor saying 170w. In the same test using the sapphire and MSI roms, it was saying more. Odd right, different settings for sensors.

So what is the real wattage, I wanted to know. I took current readings at different wattages to guess what is real. Of course I can't read the power coming from the pcie slot, but that is usually at most 5 amperes or 60 watts (5a x 12v=60w).
Readings of powercolor rx580 bios at PCI-e power connector- not including pcie slot power
Amps/ Watts on hwinfo/ calculated watts using 12v / watts on pci slot (?)

6.2a/ 90w/ 74.4w / 15.6
7a/ 110w/ 84 / 26
8.2a / 124w/ 98.5 / 25.5
9.0a/ 138w/ 108 / 30
10a/ 159w/ 120 / 29
10.5a/ 165w/ 126 / 39
11a/ 173w / 132 / 41

So pretty much it seems accurate at higher levels, 1 amp is 12 watts and it goes up that way all the way. Scaling is correct. But we don't take into account The pcie slot power use which can be up to 5 amps/60 watts.

That is around 20-40 watts it seems. I would guess that some cards use less or more, depending on phases. Maybe that is why the MSI bios reads way too high, it's calculating using different estimations? Who knows.
post #2537 of 3452
I'm trying the reference 580 to 480 conversion bios and get freezing and eventual black screen on reference rx 480. Is the bios using less voltage than normal? I'll see what I can do to make it work if possible... I see like 1137 I think in 65288 spot... that means it runs at less voltage? I think the issue is the card needs more core voltage for stability... As soon as I open AMD Settings it'll freeze a couple of times and black screen.
post #2538 of 3452
I set that spot to be 1200, 1310mhz cause my card is a crap over clocker.
I'm not using that bios though because it didn't do as well in benches.

I don't know why that one was set low, i don't think all cards can do above 1300 at that voltage.
1.137 on my card can only do around 1250
post #2539 of 3452
@generaleramon
Is there a way to slow down the cooler a bit but keep the speed? In comparison to the RX480 stock BIOS the modded one is really really loud...
post #2540 of 3452
Well I just thought this may be helpful for some having issues with RX 580 bios on RX 480. I made a 580 rom which is based directly on the Original Ellesmere.rom on the Reference RX 480 8GB.

Thanks @generaleramon I used the GV-580-Gaming-8GB rom.

I noticed the main difference is the 580 is running at way less voltage than the 480... Cooler maybe? Yes but the 480 has issues at this low of voltage. Like 950mv core at load. When on the 480 bios 65288 meant 1250mv on the big end. I'll be working on a bios to get this to work. I'll have to look over my Tonga usVddcOffsets to determine the stock voltage steps of each voltage 65288, 65287 etc. Will LYK. thumb.gif

This data is Tonga related stock values but see as we can see .. State 0 is 0 offset... state 1 - 6 is -25mv and state 7 is -50mv... the stock tonga Vddci was 1175mv... I'll need to do some thinking over on this one to determine what will work for Polaris ... gotta fill in the blanks without AtomBiosReader... Unless it's working now? not likely

1)A65C - 0000 - 0
2)A667 - E6 FF - 65510 - 65282 = -25mv
3)A672 - E6 FF - 65510 - 65283 = -25mv
4)A67D - E6 FF - 65510 - 62584 = -25mv
5)A688 - E6 FF - 65510 - 65285 = -25mv
6)A693 - E6 FF - 65510 - 65286 = -25mv
7)A69E - E6 FF - 65510 - 65287 = -25mv
8)A6A9 - CD FF - 65485 - 65288 = -50mv
CD FF is -51 (Real Value -50 offset)
E6 FF is -26 (Real Value -25 offset)

Edited by chris89 - 4/24/17 at 10:48pm
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