Is this a safe BIOS modification? Alter 5450-bios with hash from 5570

cakruege · Apr 7, 2010, 02:15 AM

I have this graphics card (Sapphire.HD5450.512.091215):
http://www.techpowerup.com/vgabios/6...12.091215.html

Is it it safe if I use RBE and take this BIOS(Powercolor.HD5570.1024.100125), save the Hash
http://www.techpowerup.com/vgabios/6...24.100125.html
and load the Hash in my bios(Sapphire.HD5450.512.091215), write this modified bios to my card?

You ask why would I do this?

My card didn't support ATI overdrive, RBE says the following if I open my BIOS:

Quote:

Unable to find overdrive settings. Maybe your card simply does not support overdrive. If you're sure this card supports it, please drop a note to the eMail-address found in the about section. Debug information: 'GetOverDrive' reported error.

If I modify the BIOS as described and load it again in RBE there is no such warning.
I hope this could be a way to enable overdrive on my card.

cakruege · Apr 7, 2010, 02:31 AM

Does anybody know what information exactly is contained in the signature?
I think at least the date, the clocks and the overdrive feature. Is there vendor or model information in it?

Is the worst thing that could happen that the driver didn't accept the card or could it be bricked?

BAGZZlash · Apr 8, 2010, 07:09 AM

You should be aware that changing a BIOS' signature also changes its deviceID. That's why RBE's built-in help feature on signature changing recommends exchanging a signature with a signature from a BIOS of the same video card type only.

If you desperately need to enable overdrive, give it a shot. But be aware that this idea is in no way better than just flashing a 5570 BIOS to your card.
I never tried something like that before because I don't have one of these cards that do not support overdrive by default. Just try, but expect strange behaviour. You will need to install a 5570 driver, then. Be ready to re-flash the original BIOS at any time.

cakruege · Apr 8, 2010, 11:31 AM

That's a pity.
5570 BIOS on 5450 card might not be a good idea.

qubit · Apr 8, 2010, 11:47 AM

Quote:

Originally Posted by cakruege

That's a pity.
5570 BIOS on 5450 card might not be a good idea.

Yeah, you're likely to brick it: I'm fairly sure that they have different GPUs, as in different number of shaders etc, so it's unlikely to work.

You can recover from a bad flash, but you don't wanna go there. TPU has an article for bad flash recovery.

cakruege · Apr 8, 2010, 01:29 PM

Is it ok to take the Signature from this card?
http://www.techpowerup.com/vgabios/6...12.091221.html
It has only DDR2 memory and memory clock is lower.

Mussels · Apr 8, 2010, 01:31 PM

this wont work. it'll just brick your card.

cakruege · Apr 8, 2010, 01:41 PM

Ok, than I return the card to the dealer.

I've massive hdmi audio stuttering which is solvable with a static setted GPU clock.
It works with AMD GPU Clock Tool but is uncomfortable (setting needs administrative rights, resetting to dynamic didn't work with command line parameter).

I'd like to use CCC profiles as describend here:
http://www.avsforum.com/avs-vb/showp...postcount=3377
Without overdrive this is not working.

I hope the GV-R545SC-1GI supports Overdrive.

Apr 7, 2010, 02:31 AM	#2
cakruege Join Date: Apr 2010 Posts: 7 (0.01/day) Thanks: 0 Thanked 0 Times in 0 Posts	Does anybody know what information exactly is contained in the signature? I think at least the date, the clocks and the overdrive feature. Is there vendor or model information in it? Is the worst thing that could happen that the driver didn't accept the card or could it be bricked? Last edited by cakruege; Apr 7, 2010 at 03:57 PM.

Apr 8, 2010, 07:09 AM	#3
BAGZZlash RBE Author Join Date: Mar 2008 Posts: 583 (0.31/day) Thanks: 206 Thanked 361 Times in 148 Posts	You should be aware that changing a BIOS' signature also changes its deviceID. That's why RBE's built-in help feature on signature changing recommends exchanging a signature with a signature from a BIOS of the same video card type only. If you desperately need to enable overdrive, give it a shot. But be aware that this idea is in no way better than just flashing a 5570 BIOS to your card. I never tried something like that before because I don't have one of these cards that do not support overdrive by default. Just try, but expect strange behaviour. You will need to install a 5570 driver, then. Be ready to re-flash the original BIOS at any time. __________________ My program: TechPowerUp.com: RBE - Radeon BIOS editor Donate CPU: Intel Core 2 Quad Q6600 (Kentsfield G0) @ 3.000 MHz/1.3 V Mainboard: Gigabyte GA-P35-DS3L RAM: 2 x 2.048 MB 6-6-6-18-2T dual channel (Kingston Value Edition) Video card: MSI Radeon HD 6870 Hard disks: Samsung HD753LJ, Samsung HD403LJ Monitors: 2 x Wortmann Terra 2430W 24.1" @ 1.920x1.200 Last edited by BAGZZlash; Apr 8, 2010 at 02:50 PM.

System Name:	Quantumville™
Processor:	Intel Core i7-2700K at 4.7GHz (hits 5 gees+ easily)
Motherboard:	Asus P8Z68-V PRO/GEN3
Cooling:	Noctua NH-D14
Memory:	16GB (4 x 4GB Corsair Vengeance DDR3 PC3-12800 C9 1600MHz)
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PSU:	Corsair HX850W
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Apr 8, 2010, 01:31 PM	#7
Mussels Doctor Moderator Join Date: Oct 2004 Location: Bendigo, Australia (NOT THE USA) Posts: 34,545 (10.98/day) Thanks: 3,699 Thanked 8,686 Times in 6,387 Posts System Specs	this wont work. it'll just brick your card. __________________ Edumacational thread about PC Audio My external HDD's.5x samsung 1TB + 2x Seagate 1.5TB = 8 TB external storage 32 Bit OS vs 64 bit OS information How to get hardware accelerated H264 playback (DXVA) Netbook Owners United!

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Memory:	8GB Corsair Dominator DDR3 - 1600Mhz 7-7-7-20 1.65V
Video Card:	AMD Radeon 5870 1GB Crossfire
Hard Disk:	Intel 520 SSD (120GB), 500GB OS + 18TB of storage (mostly external)
Optical Drive:	Samsung Blu Ray drive (SH-B083A)
CRT/LCD Model:	23.6" Samsung 1080P / Samsung 40" HDTV - 1360x768P
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Apr 8, 2010, 11:31 AM	#4
cakruege Join Date: Apr 2010 Posts: 7 (0.01/day) Thanks: 0 Thanked 0 Times in 0 Posts	That's a pity. 5570 BIOS on 5450 card might not be a good idea.

Apr 8, 2010, 01:29 PM	#6
cakruege Join Date: Apr 2010 Posts: 7 (0.01/day) Thanks: 0 Thanked 0 Times in 0 Posts	Is it ok to take the Signature from this card? http://www.techpowerup.com/vgabios/6...12.091221.html It has only DDR2 memory and memory clock is lower.

Apr 8, 2010, 01:41 PM	#8
cakruege Join Date: Apr 2010 Posts: 7 (0.01/day) Thanks: 0 Thanked 0 Times in 0 Posts	Ok, than I return the card to the dealer. I've massive hdmi audio stuttering which is solvable with a static setted GPU clock. It works with AMD GPU Clock Tool but is uncomfortable (setting needs administrative rights, resetting to dynamic didn't work with command line parameter). I'd like to use CCC profiles as describend here: http://www.avsforum.com/avs-vb/showp...postcount=3377 Without overdrive this is not working. I hope the GV-R545SC-1GI supports Overdrive.

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