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Polaris Bios Editing ( RX5xx / RX4xx ) - Page 28

post #271 of 4855
@nagle3092
The 256kb bios includes all relevant data, the 512kb bios files are just filled with 256kb of extra placeholder code:
Code:
FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF [...]

Edit:
(some additional info)
The bios chip: GD25Q41B, has a storage capacity of 4MBit = 512kb.
But only the first 256kb is used for bios data, the rest is unused and will be shown as blank (FF FF FF [...])
Edited by Powergate - 7/12/16 at 6:34pm
post #272 of 4855
Quote:
Originally Posted by Powergate View Post

@nagle3092
The 256kb bios includes all relevant data, the 512kb bios files are just filled with 256kb of extra placeholder code:
Code:
FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF [...]

Good to know, thanks man. +1 thumb.gif
 
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post #273 of 4855


I just flashed my 4gb sapphire card. does this mean I have all 8gb available now?
post #274 of 4855
Quote:
Originally Posted by hot97integra View Post



I just flashed my 4gb sapphire card. does this mean I have all 8gb available now?

Wait a sec, am I seeing the last 0.5G slower? Is RX480 actually a 7.5G card? OMG!
post #275 of 4855
No. Some of the 4gig models were between 7 and 8. No need to worry.
post #276 of 4855
Quote:
Originally Posted by The Mac View Post

i think he was trying to ask you how you actually arrived at 250watts.
My bad. I understand the question differently; I thought he is questioning why GPU-Z reporting low value. Obviously it involving mixture of guesswork & calculation OR using power meters that connects to the 6-pin & the PCIe slot (required PCIe extender card) to get the whole card power consumption.
Quote:
Originally Posted by nagle3092 View Post

Quote:
Originally Posted by Powergate View Post

You need to use the command shell:
Code:
atiflash -fs -p 0 xfx.rom

Here is the fixed XFX Black Edition 8GB bios:
xfx.zip 111k .zip file

Source:
https://www.techpowerup.com/forums/threads/xfx-rx480-8gb-black-edition-uefi-csm-bug.224001/

So there is 256k bios files as well. OP might need to edit. Or is that because of the file type being different?
Just avoid 128kb file. 256kb & 512kb files are fine.
Edited by kizwan - 7/12/16 at 11:16pm
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post #277 of 4855
Quote:
Originally Posted by comagnum View Post

No. Some of the 4gig models were between 7 and 8. No need to worry.

So this mean I don't have the full 8gb unlocked? It unlocked 7.4gb? Or does it mean the .6gb is running at slower speed?
post #278 of 4855
I just ordered a 4GB Sapphire reference card.. and I have a few questions I hope someone would take a few moments to respond to..

How likely is it that it will be bios flashable to an 8gb?
How reliable is ASUS MemoryInfo for determining whether I have the right memory modules? Should I remove the shroud instead?
The card's bios rom dumps are 512kb but the 8GB Sapphire bios rom on TPU database is 256K, it will be fine right?
Would I be better off flashing straight to the XFX 1328MHz BIOS?
Finally, if I brick the card, will I be able to stick it into a secondary PCIe slot and reflasy using ATIFlash? Does it have to be the primary VGA to be flashed?

Thanks smile.gif
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post #279 of 4855
Quote:
Originally Posted by appiah4 View Post

I just ordered a 4GB Sapphire reference card.. and I have a few questions I hope someone would take a few moments to respond to..

How likely is it that it will be bios flashable to an 8gb?
How reliable is ASUS MemoryInfo for determining whether I have the right memory modules? Should I remove the shroud instead?
The card's bios rom dumps are 512kb but the 8GB Sapphire bios rom on TPU database is 256K, it will be fine right?
Would I be better off flashing straight to the XFX 1328MHz BIOS?
Finally, if I brick the card, will I be able to stick it into a secondary PCIe slot and reflasy using ATIFlash? Does it have to be the primary VGA to be flashed?

Thanks smile.gif
Nobody know exactly. As long as they didn't change how they manufacture the GPU especially they didn't change the memory ICs, you should be able to flash 4GB card to 8GB. At the moment seems the chance pretty high to be able to do this. When custom cards come out, this likely not possible anymore but who knows?

The drivers will be able to load correct memory module from VBIOS & then the MemoryInfo will be able to read correct memory information from it. So it is very reliable. MemoryInfo is buggy if you have multiple GPU because it will read memory information from first/primary card only.

It doesn't matter where the card plug to which slot, you should be able to reflash. Much easier if you have working/old GPU plugged in too.
Edited by kizwan - 7/13/16 at 12:38am
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post #280 of 4855
Quote:
Originally Posted by appiah4 View Post

I just ordered a 4GB Sapphire reference card.. and I have a few questions I hope someone would take a few moments to respond to..

How likely is it that it will be bios flashable to an 8gb?
How reliable is ASUS MemoryInfo for determining whether I have the right memory modules? Should I remove the shroud instead?
The card's bios rom dumps are 512kb but the 8GB Sapphire bios rom on TPU database is 256K, it will be fine right?
Would I be better off flashing straight to the XFX 1328MHz BIOS?
Finally, if I brick the card, will I be able to stick it into a secondary PCIe slot and reflasy using ATIFlash? Does it have to be the primary VGA to be flashed?

Thanks smile.gif
You should probably use the sapphire 8GB bios.
256K bioses are fine the other 256k in the 512k ones are just blank data.
if you somehow manage to brick the card (which is unlikely) you can unbrick it by reflashing either by setting the igpu as your primary gpu in your bios or setting another card as the primary if you don't have an igpu or if you don't have a settings in the bios to set the primary gpu you can put a 2nd gpu into the primary mobo pcie slot (normally the top most one) and the 480 into a 2nd pcie slot
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