R9 280 OC help

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ZmedeR

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Jan 31, 2014
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10,510
Hi there Tom's community,

I recently purchased an XFX Double Dissapation R9 280 and so far it's been serving me well. I managed to overclock it up to 1200mhz on the core and 1825mhz on the memory with stock voltages (1125mv) without any artefacts. Temperatures were sitting in the high 50s throughout the Valley benchmark loop. Seeing as my temperatures were quite low, I decided to push my 280 a bit more, so I bumped the core clock up to 1225mhz and ran Valley to test it. 10 seconds into the benchmark, Valley decided to freeze up on me, which lead me to think that increasing the voltage would fix this. Using MSI's AfterBurner, I dragged the voltage slider all the way up to 1300mv, hoping it would make my overclock more stable, but it didn't. To my surprise, the temperatures didn't rise either, which makes me think that AfterBurner's voltage control isn't working properly but I'm not really sure. I'm really keen on getting the absolute best out of this card so that i can have a good fps lock for my heavily modded copy of Skyrim. If anyone can explain to me what is going on, that would be greatly appreciated :)

My build:
Asus H81M-E
Intel Core i5-4440
2x4GB GEIL Dragon 1600
Seagate Barracuda 500GB 7200 drive
Seagate 2.5 320GB 5200 drive
XFX TS Gold 650W PSU
Silverstone RL04
XFX DD R9 280

Thanks in advance :D
 
Solution
sincreator



I wouldn't pump that much voltage to it. Most OC guides say 1.2v-1.25v max is needed to hit the 7950/r9 280 limit. You could try a modded bios though to get higher, but I'm...
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ZmedeR

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Jan 31, 2014
19
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10,510


Thanks for the amazingly fast reply :)
Do you think I could clock it higher if I add even more voltage? say 1400mv? or would that not make a difference...
 
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sincreator

sincreator

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May 27, 2009
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I wouldn't pump that much voltage to it. Most OC guides say 1.2v-1.25v max is needed to hit the 7950/r9 280 limit. You could try a modded bios though to get higher, but I'm not sure if anyone has modded a r9 280 bios yet. It might be exactly the same as a xfx 7950 bios, but I can't say for sure. If you do decide to try a modded bios, remember that those cards have a bios switch that will allow you to go back to defaults in the case of a bad flash.

Here are some modded bios for the 7950 series(DO AT YOUR OWN RISK):

http://www.overclock.net/t/1395490/ati-hd-7950-7970-bios-mod-thread

You have a lot of reading ahead of you and some research to do. If you are lucky someone WAY later on in that thread may of had a custom bios prepared for the XFX r9 280 card that you have. Time to do some digging ;)

PS: I have tried 3 of Kahboom's custom bios for my TFIII 7950, and all 3 worked perfect. My problem became heat once I went past 1200mhz so I settled on his 1070/1500 clocks. The other bios he made for my card had 1200/1600, and 1300/1750 clocks I believe. They all worked, but I would of had to run my fan at 100% to keep it cool. The TFIII cooler is too loud for that, lol.

Once I picked up my PowerColor 7970 I defaulted my TFIII to the original bios, and clocked them at the same clocks. 1025/1500. My Powercolor's limit on stock voltage.
 
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Solution
Z

ZmedeR

Honorable
Jan 31, 2014
19
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10,510


Thanks a lot for your reply :)
I guess I'll leave it at my current overclock then. To be honest, last morning I flashed a modded 7950 bios and bricked my card so I had to use the bootable dos drive method to revive it. (my card has no dual bios option :( ) Thanks a lot for your help though. I appreciate it :)
 
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