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Polaris Bios Editing ( RX5xx / RX4xx ) - Page 146

post #1451 of 3335
Thread Starter 
Quote:
Originally Posted by Flickspeed View Post

Anyways, I used HxD to edit the HEX Values of the bios file. Specifically, I edited as follows:

Searched for 2000MHz Values and replaced with 1750 Values
Searched for 1875MHz Values and replaced with 1750 Values
Searched for 1750MHz Values and replaced with 1625 Values
Searched for 1625MHz Values and replaced with 1500 Values

After this I opened the file with Polaris Bios Editor and SAVED the file.

I flashed the file as usual with -f -p command.

Video card failed to POST after this procedure.

Currently reverted to original bios and it works again.

What did I do wrong?
Example of a 2000mhz strap with 1750mhz timings ( 02 micron memory). Only change the timing section

40 0D 03 02 77 70 00 00 00 00 00 00 22 AA 1C 00 B5 6A 6D 46 C0 55 10 17 BE 8E 06 0C 00 6A E6 00 0C 08 14 20 EA 89 00 AB 03 00 00 00 1B 16 2C 31 C0 31 3F 17.

Mod with hex editor, fix checksum saving with Polaris Bios Editor and then flash.
post #1452 of 3335
Hello people,


I have been following this thread for quite a while now, I have flashed by RX480 with good results (1400 on the core)with one of the previous drivers, but I have stumbled upon an issue that I might need your knowledge with.

I am running a Sapphire RX480 reference card on water, temps are good but with the crimson relive drivers, I have been having issues with the VDDC. With PBE, when I change the core to 1366MHz with 1200mv (which runs fine in MSI Afterburner), flash the bios, DDU, reinstall and patch the driver... The VDDC seems to stay at 1137mv where eventually any GPU benchmark will crash.

Currently using crimson relive 17.3.1 minimal driver setup with only the graphics card driver installed (none of the other options). Here's my PBE rom:



How do I get the 1200mv that I need to core my core clock stable? Am I missing something?
post #1453 of 3335
Hi all,
so can I use the PolarisBiosEditor with Elpida memory if I don't plan to mess with timings? All I want to do is mess with Powertune and fan settings a little.
Alternatively, can I flash the reference RX480 bios to my Nitro (not Nitro+) RX480 4GB?
post #1454 of 3335
Quote:
Originally Posted by generaleramon View Post

Example of a 2000mhz strap with 1750mhz timings ( 02 micron memory). Only change the timing section

40 0D 03 02 77 70 00 00 00 00 00 00 22 AA 1C 00 B5 6A 6D 46 C0 55 10 17 BE 8E 06 0C 00 6A E6 00 0C 08 14 20 EA 89 00 AB 03 00 00 00 1B 16 2C 31 C0 31 3F 17.

Mod with hex editor, fix checksum saving with Polaris Bios Editor and then flash.

Yes second time I did exactly that, put the 1750 strap timings for 2000 and 1875
1625 -> 1750 and 1500 -> 1625

Card failed to post still.. Did I go too tight?
post #1455 of 3335
Thread Starter 


Polaris need a lot of Bandwidth! Even at low Core clock.
Scaling only start to slow down with 2100Mhz memory (230+GB/s) and 1100Mhz core.

1350-1100-800mhz core
Edited by generaleramon - 3/8/17 at 1:30am
post #1456 of 3335
Thread Starter 
555000000000000022CC1C00AD615A41C0570E152DCB740A0068E7000B031420FA8900A003000000190F2F39B22D3517 2419pt 233GB/s

less bandwidth but better score in Valley. 2419pt vs 2390pt(latest ubermix)...
post #1457 of 3335
Quote:
Originally Posted by generaleramon View Post

555000000000000022CC1C00AD615A41C0570E152DCB740A0068E7000B031420FA8900A003000000190F2F39B22D3517 2419pt 233GB/s

less bandwidth but better score in Valley. 2419pt vs 2390pt(latest ubermix)...
Margin of error maybe??
post #1458 of 3335
Thread Starter 
Quote:
Originally Posted by AliNT77 View Post

Margin of error maybe??
I always get the same points in every run...1-2pt difference max. So no. I'll test again tomorrow
post #1459 of 3335
@generaleramon or amyone have a decent timing strap: this is the 4GB samsung memory straps from 1375 to 2000 if you can help to figure the best timing strap for max perf I will test.

1375 = 333000000000000022CC1C008CCD593AC0570D13AA09B4070048C7007A0014207A8900A002000000140D272E7B252B15
1500 = 555000000000000022CC1C00AD515A3EC0570E142D4A64080048C700030114207A8900A003000000150E2A3186272E16
1625 = 555000000000000022CC1C00CE596B44D0570F1531CB2409004AE7000B0314207A8900A003000000170F2E36922A3217
1750 = 777000000000000022CC1C0010626C49D0571016B50BD509004AE700140514207A8900A003000000191131399D2C3617
1900 = 777000000000000022CC1C00106A7D4FE0571117B98CA50A004C07011C0714207A8900A0030000001B11353FAA2F3A18
2000= 777000000000000022CC1C0031EE7D53F05711183BCD350B004C0701240814207A8900A0030000001C123842B3313C19
post #1460 of 3335
Quote:
Originally Posted by generaleramon View Post

555000000000000022CC1C00AD615A41C0570E152DCB740A0068E7000B031420FA8900A003000000190F2F39B22D3517 2419pt 233GB/s

less bandwidth but better score in Valley. 2419pt vs 2390pt(latest ubermix)...
I'm getting more consistent bandwidth in OCLMemBench with these timings. With the older ones it would occasionally dip to ~220-225, with these there are one or two dips to ~230, but it mostly howers at ~238. This is at 2150MHz. Seem to be error free at 2150MHz. Score in Valley is a bit odd. Difference between old and new timings at 2150MHz is roughly three times bigger than difference between them at 2000MHz.
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CPUMotherboardGraphicsRAM
3770k Asus P8Z77I-Deluxe MSI Radeon RX 480 GAMING X Crucial Ballistix XT 
Hard DriveCoolingCoolingCooling
Crucial M500 Noctua NH-D14 Noctua NF-F12 PWM Noctua NF-F12 PWM 
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Noctua NF-B9 PWM Noctua NF-B9 PWM Corsair SF600 Fractal Node 304 
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