Ok folks, I think our HexEdit and checksum correction days are finally over. I came across this thread (german anyone?):
http://www.computerbase.de/forum/sho...d.php?t=372893
And here is the link to the ATI 85xx BIOS editor:
http://www.aledander.de/vb/ati_bios_...tibiosedit.zip
Change whatever frequency/voltage you want in a breeze. Could anyone test it to make sure it works? I'm a bit busy right now...
Enjoy!
Last edited by maxmaz; 01-31-2008 at 10:36 PM.
coool......hope someone can test it...Originally Posted by maxmaz
ps. tried to open a 3870x2 file...is not allowed....i hope soon there'll be an update
no signature at the moment....
in progress...
I just tried the app. Did not flash with new bios until I can confirm the checksum, etc.
I used the HIS 3850/512 bios file that I'm currently running on my Sapphire.
There is an error in the Voltage dropdown. Instead of a dot, it is a comma (1,327 and not 1.327) and saved bios file gave an error on opening. If you type the value manually, it seems to save correctly and opens the file with set values.
EDIT
Just noticed at the bottom of the app window is a checksum display. Both the stock BIOS and the modified show value of 7500
EDIT AGAIN
Just ran this on a Sapphire bios I have on here, and noticed on the bottom of window that there is a checksum correction taking place when the file is saved.
I'm not at home now, so I can't try flashing just now.
Last edited by lowtcell; 02-01-2008 at 06:55 AM.
ASUS P5E X38 (RF 0701 Bios) Q9550@3.51 1.248v, Xigmatek S1283, 8GB GSkill DDR2-8000@990 1.94v, XFX HD5870,
2 - Seagate 7200.10 320G RAID0, Seagate 7200.11 500G, Seagate 7200.12 1.5TB
Lian-Li (Rocketfish) Full Tower, Silverstone Zeus 750Watt, Vista Ultimate x64 SP1, Dell U2410
I tryed several bioses versions to use on my PowerColor (All working) and Connect3D (more problematic). But none of them allowed me to go further than 762Mhz event with VGPU set to 1.37V
Perhaps, depending on the manufacturer, some HD3850 VGPU can be changed within the bios others not.
Other testings: I tryed also different revisons (065, 067, 070, 071 and 073).
The one giving the best score in 3DM06 is the 073 followed by the 064 and the worst is the 071. (Testings made on PowerColor and Connect3D)
The differences sometimes are huge....
Last edited by chp; 02-01-2008 at 08:32 AM.
Thx for your answer m8, I realy appreciate thatKarwa, it'd be best if you flashed ASUS card with Sapphire's bios, it's in newer version (071) and lets you clock above 862MHz. They both use the same PCB and memory (I checked) and Sapphire bios works on ASUS (I checked, too)
Here's Sapphire bios modded to 1.327V and with 2D clocks disabled:
http://profide.eu/files/karwa.zip
I have measured power consumption before and after flashing, and disabling 2D clocks does nothing. Power consumption is still ~230-240W when cards are idle (cpu loaded).
Powodzenia z flaszowaniemUnfortunately there is some problem with *.zip file, unable to unpack grr
echo
echo ______,====,_____||
echo |_,.--''''''\[_ \_\----------''''''''''''''''
echo david ||___\\ m4a1
echo
has anyone tried the modded bios for the GeCube 512Mb 3850 OC X-Turbo? I have just ordered one and wanna see if what results others have had while waiting for it to turn up
Please, somebody mod my bios with the HD3870 voltages and correct the checksum..i can't pass 770 mhz on core
I have managed to reach the 857.25mhz clock limit on by 256mb powercolor hd3850 using 1.39v (1.327v via bios and the rest using a pencilmod).
Does anyone know of an unlocked 256mb hd3850 bios?
Thanks.
Q9300 l 4GB DDR2 l HD 4850 l GA-X38-DQ6 l 2.5TB HD l VX550 l Dell S2409W l Vista X64
.
That already has a 3d voltage of 1.327v, the maximum possible via BIOS.Please, somebody mod my bios with the HD3870 voltages and correct the checksum..i can't pass 770 mhz on core
Ive reuploded with a checksum of 7500.
Q9300 l 4GB DDR2 l HD 4850 l GA-X38-DQ6 l 2.5TB HD l VX550 l Dell S2409W l Vista X64
.
I tried the HIS bios with 1.327 volts. It does not work. Vcore only gets to 1.241, tested with DMM on the card at full load.
ASUS P5E X38 (RF 0701 Bios) Q9550@3.51 1.248v, Xigmatek S1283, 8GB GSkill DDR2-8000@990 1.94v, XFX HD5870,
2 - Seagate 7200.10 320G RAID0, Seagate 7200.11 500G, Seagate 7200.12 1.5TB
Lian-Li (Rocketfish) Full Tower, Silverstone Zeus 750Watt, Vista Ultimate x64 SP1, Dell U2410
this is mine Bios ,.. got the HIS 256MB
Bios Settings are : 750 - 950 @ max Voltage as the Bios settings can give.
No LOCK...
I got mine card @ 931/1026 with additional pencilmods
MÖP!!!
Ok so FYI the gecube cards can't change voltage via BIOS, but pencil mod works fine. Currently running 810mhz crysis stable @ 1.38v, 67'C load temps.has anyone tried the modded bios for the GeCube 512Mb 3850 OC X-Turbo? I have just ordered one and wanna see if what results others have had while waiting for it to turn up
I tryed 1.327 too, but i only managed to get 1.23 in multimeter. Default is 1.214.
How high do the clocks go up in CCC with that Bios?
ASUS P5E X38 (RF 0701 Bios) Q9550@3.51 1.248v, Xigmatek S1283, 8GB GSkill DDR2-8000@990 1.94v, XFX HD5870,
2 - Seagate 7200.10 320G RAID0, Seagate 7200.11 500G, Seagate 7200.12 1.5TB
Lian-Li (Rocketfish) Full Tower, Silverstone Zeus 750Watt, Vista Ultimate x64 SP1, Dell U2410
Cheers.
edit: It also actually is only 1.3v in the BIOS. You can get 1.327v via the editor. Nevertheless, its exactly what i wanted.
Last edited by ghost101; 02-23-2008 at 12:28 PM.
Q9300 l 4GB DDR2 l HD 4850 l GA-X38-DQ6 l 2.5TB HD l VX550 l Dell S2409W l Vista X64
.
result ??
which software using for biosmode
Biostar TP45
E8600 @ 4500 1.35v
Crucial Ballistix Tracer
Sapphire HD4830
True120
HWA TEAM
Yeh it worked perfectly. I used the BIOS editor to change the clocks and winflash to flash the card.result ??
which software using for biosmode
With 1.4v im running it at 871mhz for the core.
Q9300 l 4GB DDR2 l HD 4850 l GA-X38-DQ6 l 2.5TB HD l VX550 l Dell S2409W l Vista X64
.
when i press load bios...
Biostar TP45
E8600 @ 4500 1.35v
Crucial Ballistix Tracer
Sapphire HD4830
True120
HWA TEAM
Ive tryied 2 different unlocked bioses. And with neither of them i cant lower the 2D voltage. Ideas?
I can't open it with techpowerup Radeon Bios Editor.
Can anyone post Sapphire HD 3850 256 MB modded bios?
Last edited by Data_; 04-11-2008 at 10:43 AM.
Does anyone have a mod for the Gecube version with 512 MB DDR3 and 668 , 1400 mhz clocks?
What program can i use to read the current bios settings for my card?
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