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Method required to unlock Sapphire DualX R9 280X voltage... please!

post #1 of 4
Thread Starter 
Silly me - I bought one of these cards thinking I was getting a great platform to OC on.. ha ha!!
With regret, I cold only afford the DualX version of the 280X, (voltage locked it seems) and not the bigger better brothers... and they ARE voltage unlocked by the looks and posts... frown.gif

Afterburner cant touch the voltage, as it could on the 7850 - after I installed the Beta version etc... My 7850 OC'd wonderfully...

OK, having read and seen a thread regarding the flashing of the 7970 BIOS using VBE7, has anyone managed to or know of, to accomplish this on the R9??

I can see that the VDDC DOES change, in GPU-Z, load, no load etc... and using Trixx, well...when I set the VDDC up high, I can see in GPU-Z, the voltage drops under, load then returns to near what I've set it - when under no load... ??

In comparison, the 7850 behaved as it should - low volts at no load, and volts ramped up and load it... this 280X does the opposite...

the best I can do is 'up' the Power, to+20. which DOES make some difference, well, to the current draw anyways... but as we know, to up the clocks more we need some more volts....


How to contact the author of VBE7, or can someone shed some light as to where to go from here...?


No, I cant go buy another higher specced card - a budget IS a budget... perhaps this card is no good, with respect to the Vdroop on load??


Suggestions MOST welcome...!! smile.gif


AKL Fisho - New Zealand
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Q6600 Asus Maximus Formula Sapphire R9 280X 8Gb DDR2 1000 
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Windows 7 Pro 64 bit x3 LCD setup 600W + 550W  CoolerMaster 830 Stacker 
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My Pig...
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Q6600 Asus Maximus Formula Sapphire R9 280X 8Gb DDR2 1000 
OSMonitorPowerCase
Windows 7 Pro 64 bit x3 LCD setup 600W + 550W  CoolerMaster 830 Stacker 
Mouse PadAudio
The desk... Audiophile Amp and monitors / Sennheiser headph... 
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post #2 of 4
I would think flashing the bios of the R9-280x Toxic should do the trick, unless it's a physical limitation.
post #3 of 4
OP,

I have one of these cards. I can increase the volts to 1.3 no problems with the Trixx software. I have only had my card for 2 days and I have reached the very limit of her, 1185Mhz passed in 3DMark 11, and 1190Mhz passed a 2+ hour loop in Unigine Valley.

I don't know if you need to ditch afterburner and replace it with Trixx, but give it a go and see how it works out for you. The cards really are great. I had a 7950 variant of the Sapphire Dual Fan cooler and from a stock 800Mhz clock I had her stable at 1200Mhz. Just a beastly card that I sorely regret getting rid of looking back, although the GTX 670 Windforce that I replaced it with also hit a nice clock of 1255Mhz. I guess I have been fairly lucky in getting decent silicon with high potential for overclocking.

But definitely the Dual X 280X is not voltage locked, up to 1.3V anyway, and really that should be the most you push it on air regardless.
post #4 of 4
Thread Starter 
Now THIS puts a smile on my face...! biggrin.gif


yes, you are right, since my first post, I have been playing about with Trixx more, setting the VDDC up to max (1300 mV) [which GPU-Z indicates as 1.281 Volts...] and also the mod that increases the Power Limit in AB, from +20 to +50%... which also works in Trixx then...

I DO still use AB, but leave all settings as standard, but I love the monitoring side of things in-game... If it wasn't for that I'd leave it alone and run Trixx on its own...


Thats certainly a gain from the standard 870 MHz of the 280X !! Well done! Its time I really started to wind it up.. I had settled (for now) on 1107 on the Core, only because history taught me that though a card was stable in benchmarking, was unstable in-game.. Hmmm 1185 MHz... I want!!!

Right, perhaps a little session before heading off to Armageddon 2013 today...


Thanks AnToNCheZ!




-Edit- 1145 so far, all good, haven't touched the Mem clock yet - though still seeing Core volt (VDDC?) droop under load, then come up when off-load... even with Voltage Forced applied... Must be said Im driving 3 LCD's in Eyefinity mode... a little more I think...
Edited by AKL Fisho - 10/25/13 at 12:10pm
My Pig...
(14 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 Asus Maximus Formula Sapphire R9 280X 8Gb DDR2 1000 
OSMonitorPowerCase
Windows 7 Pro 64 bit x3 LCD setup 600W + 550W  CoolerMaster 830 Stacker 
Mouse PadAudio
The desk... Audiophile Amp and monitors / Sennheiser headph... 
  hide details  
Reply
My Pig...
(14 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 Asus Maximus Formula Sapphire R9 280X 8Gb DDR2 1000 
OSMonitorPowerCase
Windows 7 Pro 64 bit x3 LCD setup 600W + 550W  CoolerMaster 830 Stacker 
Mouse PadAudio
The desk... Audiophile Amp and monitors / Sennheiser headph... 
  hide details  
Reply
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