ATI 38xx BIOS editor (Finally!)

[RealyPssd]

What's a nice next step up from the default of v1.327 I have with my HD3870?

[superbowtie]

Whats the deal does the voltage adjustments, Do They work or do they not? **On the 3870**

isn't 1.327, the factory voltage anyhow for the 3870?

How did Chicco85 set his to 1.37? for some reason when i open rivatuner diagnostic report and have the same things checked i don't see voltage.

[maxmaz]

Just saw a new verison of the bios editor posted:

http://www.computerbase.de/forum/sho...d.php?t=372893

(Use Google translate at http://www.google.com/translate_t if you don't know german)

Download: http://www.computerbase.de/downloads...tor/?url=17592

This one supports 3850, 3870 and 3870X2 alltogether. Also, you can edit low and high power 3D clock/voltages separately.

NB: People with 3870X2 - make sure to use google translate and fully read the instructions there. Apparantly you will need to first save the original bios of each gpu separately and then change each one individually but to the IDENTICAL new values and flash both bioses at one sesison (e.g. type atiflash -p 0 bios1.rom once, enter and then type atiflash -p 1 bios2.rom and enter and then restart). I don't have this card and I haven't tried this, so make sure you know what you're doing!

[RealyPssd]

Does anyone know if/how to get higher then 1.327v for on a 3870 with this?

[Sleepy Ben]

I believe both the 3870 and 3850 cards have a hardware limit of 1.33v so trying to set a higher limit than that in the bios is ineffective.

A hardware vmod is needed to achieve higher voltages than that ie. pencil mod or resistor change.

[fornowagain]

Anyone actually tried this for the higher voltage yet?

[spajdr]

fornowagain : can you save bioses with higher voltage then 1.327?

[fornowagain]

fornowagain : can you save bioses with higher voltage then 1.327?

No, just saved the 1.327v, haven't tried uploading to the card. Even a little might help though. Files attached.

[spajdr]

Thanks matey, i dont have floppy anymore so i cant make a copy of bioses, and winflash makes nothing, just eats cpu its weird, previously i run it without problem.

[spajdr]

I hope that ati tool will support software voltage change, someone here on forum said its possible, just need to be added.

[CRFX]

Tried the new .9 beta and it works great for me. Getting 850\1100 at 1.327 on my HIS 3850 512.
Only problem now is I think I'm hitting the 862Mhz wall. I haven't seen a fixed bios for the 512 version yet though.
Thanks for posting this program.

[ColonelCain]

Tried the new .9 beta and it works great for me. Getting 850\1100 at 1.327 on my HIS 3850 512.
Only problem now is I think I'm hitting the 862Mhz wall. I haven't seen a fixed bios for the 512 version yet though.
Thanks for posting this program.

http://www.techpowerup.com/vgabios/1...12.071102.html

This is the Techpowerup! download page for the 862mhz clock lock fix.

Although, compared this one and the Sapphire Atomic one, the Atomic bios's 3D vgpu is still only 1.327.

It just set's the clocks at 825/1200.

I can only get to 900 core on my 3870 on water, after that it fails. Needs more power. And, if what they are saying is true that the controller doesn't put out more than 1.327 w/out a hardmod, I'll be hardmodding.

Running Crysis for a while (CPU and GPU loop), it get's up to 40C load.

[CRFX]

Thanks, but I have a 3850 with gddr3.

[RealyPssd]

I wonder how Chicco85 got 1.37

[Barr3l Rid3r]

Sweet


Ok I've found a solution for Gigabyte HD3870 512MB DDR3 Qimonda....
Original Ver 70 locked bios 1.22V

at 859/2100Mhz

Used a Sapphire 3850 512MB DDR3 Qimonda Bios
Ver 71 Unlocked Bios 1.22V ( http://www.techpowerup.com/vgabios/2...12.071108.html )

+ Editor to set 1.22V 2D and 1.32V 3D And now I got 1.38V in Multimeter
@895/2100Mhz

( http://www.computerbase.de/downloads...tor/?url=17592 )

[Jon Boy Deluxe]

Just saw a new verison of the bios editor posted:

http://www.computerbase.de/forum/sho...d.php?t=372893

(Use Google translate at http://www.google.com/translate_t if you don't know german)

Download: http://www.computerbase.de/downloads...tor/?url=17592

This one supports 3850, 3870 and 3870X2 alltogether. Also, you can edit low and high power 3D clock/voltages separately.

NB: People with 3870X2 - make sure to use google translate and fully read the instructions there. Apparantly you will need to first save the original bios of each gpu separately and then change each one individually but to the IDENTICAL new values and flash both bioses at one sesison (e.g. type atiflash -p 0 bios1.rom once, enter and then type atiflash -p 1 bios2.rom and enter and then restart). I don't have this card and I haven't tried this, so make sure you know what you're doing!

I've flashed nvidia bios before but not ati!

I want to flash my max stable OC onto the X2 and boost the voltage. Is this bios editor all I need?

Has anyone flashed their X2 bios yet?

Thanks

[NCspecV81]

I've flashed nvidia bios before but not ati!

I want to flash my max stable OC onto the X2 and boost the voltage. Is this bios editor all I need?

Has anyone flashed their X2 bios yet?

Thanks

I've flashed my X2. I set all my volts to 1.327 on the 3D Clocks yet, when I put a multimeter to it while running the Atitool Fur Cube to scan for artifacts, it only reads 1.27v. On idle it runs 1.25-6v. Apparently this card ignores the voltage increase in the bios, unless Atitool fur cube does not trigger the 3D clocks. However it does confirm the reason why I can't get a 3dmark06 pass completed past 900mhz on the core. I have a saphire X2 btw.

[RealyPssd]

What are the default 3D volts on an X2?

[Jon Boy Deluxe]

I've flashed my X2. I set all my volts to 1.327 on the 3D Clocks yet, when I put a multimeter to it while running the Atitool Fur Cube to scan for artifacts, it only reads 1.27v. On idle it runs 1.25-6v. Apparently this card ignores the voltage increase in the bios, unless Atitool fur cube does not trigger the 3D clocks. However it does confirm the reason why I can't get a 3dmark06 pass completed past 900mhz on the core. I have a saphire X2 btw.

Thanks for your reply.

If you have the inclination, perhaps take a reading of the core when running 3dmark.

Either, a) your flash didn't work b) bios mod doesn't work or c) artifact scanning isn't activating 3d (which is unlikely imo, otherwise what would be the point of the test).

I guess the benefit is the OC can be set on the card rather than having to apply the OC every time you boot up...

[fornowagain]

I've flashed my X2. I set all my volts to 1.327 on the 3D Clocks yet, when I put a multimeter to it while running the Atitool Fur Cube to scan for artifacts, it only reads 1.27v. On idle it runs 1.25-6v. Apparently this card ignores the voltage increase in the bios, unless Atitool fur cube does not trigger the 3D clocks. However it does confirm the reason why I can't get a 3dmark06 pass completed past 900mhz on the core. I have a saphire X2 btw.

Same here, flashed it to 1.327v. Multimeter reads one core at 1.24v-1.27v load, the other core is 1.32v-1.34v load. Changing the bios voltage made no difference. This one is a Powercolor and gets to 932/2200 stock.

[NCspecV81]

I flashed back to my original firmware and got the same measurements on voltage. Don't flash your X2 expecting higher voltages! I got the same measly voltage on both cores =o( must be why I'm stuck at 900 core. Oh well! Hard mod method for me!

[maxmaz]

A new version (v 0.91 beta) is available:
http://www.computerbase.de/forum/sho...d.php?t=372893

Interestingly, the new version recommends changing all mem frequencies together to the oc'ed value for the best stability. If you think about it, it makes sense since the increased voltage only applies to the core and having various 2D/3D core frequencies can make a difference in temp, but mem frequency shouldn't make much difference and it might benefit from being a fixed value and not throttling up and down. Another recommendation is not to change the boot frequencies/voltages.

I used the newest version to edit 071 (unlocked) bios for my VisionTek HD3850 (256) to 800/1050 (on stock cooler with fan adjusted via riva) and I can see all the values as they should be in rivatunder. Of note, in spite of mem frequency of 1050 in bios, my mem frequency idles at the default 830 and jumps to 1050 in 3D. No complaint so far...

[fornowagain]

I flashed back to my original firmware and got the same measurements on voltage. Don't flash your X2 expecting higher voltages! I got the same measly voltage on both cores =o( must be why I'm stuck at 900 core. Oh well! Hard mod method for me!

Flashed mine back as well, found the modified bios stopped the ATi overdrive from working for some odd reason.

[SRV]

Flashed mine back as well, found the modified bios stopped the ATi overdrive from working for some odd reason.

Same here, Overdrive didn't work when I modified BIOS. I have Club3D HD3850 256MB, with reference cooler.

Hmmm, I flashed with Vcore set to 1,327 but I can't get GPU stable at more than 750MHz. At default Vcore (1.21V) I get 730MHz stable. So it's just 20MHz. I doubt actual Vcore is 1.327V, and now I see it's just 1.24V? That explains why I got just 20MHz and why the temperature stayed almost the same.

I saw some of you entered value manually, but that doesn't work for me.

OT:
A question for lowtcell: how did you get a limit of 900MHz for GPU in CCC?

[thepfy]

I think Overdrive is disabled if the checksum is incorrect. From what I have read the BIOS editor doesn't correct the checksum.