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Need help Voltage Modding XFX Radeon HD 6770 1024mb

post #1 of 3
6/16/12 at 6:21pm
Thread Starter 
I am trying to modify or find a compatible modded bios For my graphics card so I can overclock it further than 890 core, 1220 mem clocks. If i try any higher the card stops responding and gives me a pinstripe screen.

I have seen Modded bios listed on Techpowerup but I am iffy with it since I do not have a second graphics card.
If any of you have done this and confirmed or have a compatible bios please point me in the right direction.

Thanks.
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post #2 of 3
6/24/12 at 8:41am
I think I have similar problem and looking for a solution. I have XFX 6770 - HD-677X-Z5FH this is the eyefinity 5 with 5x mini DP. http://xfxforce.com/en-gb/Products/Graphics-Cards/AMD/AMD-Radeon-HD-6000/AMD-Radeon-HD-6770.aspx

I have it under water and do have small aluminium heatsinks on the vRAM chips.
259
275

I'm hitting about 45C at 950 MHz core and vRAM chips are hitting approx 55C at 1375 MHz so I'm looking for a way to push it little further and would like to get two things for that

(1) Ability to set the core clock higher than 960 allowed by CCC/MSI afterburner
(2) Ability to push the volts higher than the relatively high default of 1.2V on this card. I would like to go to ~1.3V.

MSI afterburner does not give me access to voltage regulation even if I tick the needed boxes which is telling me I need a better BIOS for that. Anyone knows anything fitting ? Any suggestions or pointers on how to get this card going higher than 960 MHz core and 1.2 volts. I would like to push it until it hits about 60 .. 65C in OCCT (which is usually a bit hotter than it will get in real usage patterns).

Edit: I should add that with Sapphire TriXX I can set the clock for up to 1400 for the core, however, my card is not stable above 950 with 1.2V core. So what I mainly need is the ability to up the volts.
Edited by Carniflex - 6/24/12 at 9:58am
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AMD Phenom II X6 1055T GA-870A-USB3 Club3D 7870 Eyefinity 6 XFX 6770 Eyefinity 5 
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Soliton Dispenser
(24 items)
  		  
CPUMotherboardGraphicsGraphics
AMD Phenom II X6 1055T GA-870A-USB3 Club3D 7870 Eyefinity 6 XFX 6770 Eyefinity 5 
RAMRAMRAMRAM
A-Data 8GB A-Data 8GB A-Data 8GB A-Data 8GB 
Hard DriveHard DriveHard DriveHard Drive
Crucial M4 64 GB SMG F1 640 GB SMG F3 750 GB WD Green 3 TB 
Hard DriveOptical DriveCoolingOS
Barracuda 3 TB None Custom Loop Win 7 64 Pro 
MonitorMonitorKeyboardPower
DELL U2311H 3x DELL U2312HM 2x Thermaltake G-unit Corsair TX-750 
CaseMouseMouse PadAudio
Revoltec fifty 3, heavily modded. Logitech G700 3M Logitech G35 
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post #3 of 3
6/28/12 at 1:08pm
Well seems like there is no modded BIOS for this card which somebody has already tested so I'll have to be the guinea pig in this regard. I will think about it a little while. I do have a second GFX card its just as my current one is under water is such a hassle to replace it if I brick it.

I have in the past flashed a Sapphire 5770 into a 6770 by just throwing a 6770 BIOS at it however I have not modified the BIOS'es with RBE myself previously. I did look over the other BIOS'es in there and for example a Asus has couple with 1.25 V, however, I would guess modding the originial BIOS should be safer than throwing an arbitrary one at the card.

I'll leave the overclock limits in place if the volt mod is successful and just use TriXX for pushing the card above the official limit.
Soliton Dispenser
(24 items)
  		  
CPUMotherboardGraphicsGraphics
AMD Phenom II X6 1055T GA-870A-USB3 Club3D 7870 Eyefinity 6 XFX 6770 Eyefinity 5 
RAMRAMRAMRAM
A-Data 8GB A-Data 8GB A-Data 8GB A-Data 8GB 
Hard DriveHard DriveHard DriveHard Drive
Crucial M4 64 GB SMG F1 640 GB SMG F3 750 GB WD Green 3 TB 
Hard DriveOptical DriveCoolingOS
Barracuda 3 TB None Custom Loop Win 7 64 Pro 
MonitorMonitorKeyboardPower
DELL U2311H 3x DELL U2312HM 2x Thermaltake G-unit Corsair TX-750 
CaseMouseMouse PadAudio
Revoltec fifty 3, heavily modded. Logitech G700 3M Logitech G35 
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Soliton Dispenser
(24 items)
  		  
CPUMotherboardGraphicsGraphics
AMD Phenom II X6 1055T GA-870A-USB3 Club3D 7870 Eyefinity 6 XFX 6770 Eyefinity 5 
RAMRAMRAMRAM
A-Data 8GB A-Data 8GB A-Data 8GB A-Data 8GB 
Hard DriveHard DriveHard DriveHard Drive
Crucial M4 64 GB SMG F1 640 GB SMG F3 750 GB WD Green 3 TB 
Hard DriveOptical DriveCoolingOS
Barracuda 3 TB None Custom Loop Win 7 64 Pro 
MonitorMonitorKeyboardPower
DELL U2311H 3x DELL U2312HM 2x Thermaltake G-unit Corsair TX-750 
CaseMouseMouse PadAudio
Revoltec fifty 3, heavily modded. Logitech G700 3M Logitech G35 
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