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XFX 5770 Voltage question(s)

post #1 of 2
Thread Starter 
I have a XFX 5770 model: HD-577A-ZNFR with a Setsugen 2 cooler on it. I've managed to push it to 1075 core, 1375 ram, on 1.35v while keeping my temps a reasonable 55-60C under Furmark. I'd really love to break 1100 on the core but the problem is that I can't raise my core volts any higher. I'm guessing it is locked by the bios but it could be a hardware limitation on the card. I'm maxed with Afterburner. I have tried the Voltage Unlocker and and Unofficial OC'ing, it's a "No Go" I don't need the extra power so much as I just want it to say "Lookie at what I can do" I can afford to buy a new card should I really bork it, but I'd rather not have to. This is more for fun then anything.

So I have a few questions concerning my options:

If it is a cap in the bios is it possible to mod my bios to allow for some more head room?
-What software will I need?
-What kinda risk level we talking about? If bricked is it Unbrickable?
-Difficulty?


If it is a hardware limitation is there any thing I can do?
-Hard mods?
-Someone/where I should seek for guidance/expertise?
-Difficulty? (I'm fair with a soldiering iron, Pro equip helps, got a Metcal biggrin.gif)
-Risk? More obvious could lead to physical harm to the card.



I'm probably forgetting some major questions, concerns, or quandaries I will run into. Feel free to link me to any guides, forums, anything you my think is useful.

But thanks for stopping by and offering some help.
post #2 of 2

It's hardware limitation.

 

Have a look here http://www.overclock.net/t/1161296/sapphire-5770-vmod-needed-d-hd-pics-datasheet-included

 

And shoot a PM to this great guy, he has the data sheet http://www.overclock.net/u/21980/cl3p20


Edited by Ken1649 - 12/29/11 at 12:48am
ケンジ
(16 items)
 
  
CPUCPUMotherboardGraphics
i7-3960X i7-980X GA-X79-UD7 / GA-X58A-UD9 7970 + 465 
GraphicsRAMRAMHard Drive
2x 6990 + 580 16GB 2133 MHz 24GB 2000 MHz 120GB x 2 RAID0 
Hard DriveHard DriveCoolingCooling
120GB x 4 RAID0 Raptor 300GB x 2 RAID0 CPU-370 CPU-370 
CoolingCoolingOSPower
VID-AR699 EK FB X58A-UD9 Win 7 Ultimate x64 1500W / 1250W+1200W 
  hide details  
Reply
ケンジ
(16 items)
 
  
CPUCPUMotherboardGraphics
i7-3960X i7-980X GA-X79-UD7 / GA-X58A-UD9 7970 + 465 
GraphicsRAMRAMHard Drive
2x 6990 + 580 16GB 2133 MHz 24GB 2000 MHz 120GB x 2 RAID0 
Hard DriveHard DriveCoolingCooling
120GB x 4 RAID0 Raptor 300GB x 2 RAID0 CPU-370 CPU-370 
CoolingCoolingOSPower
VID-AR699 EK FB X58A-UD9 Win 7 Ultimate x64 1500W / 1250W+1200W 
  hide details  
Reply
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