Originally Posted by kellygtp
pardon my ignorance, but whats the max voltage these cards are safe at??
i think I read somewhere that 1.3 was the max anyone should go, but I could be wrong.
im getting 1.176v with 950/1200 on my card now.
ill look at idle and load speeds on that but I was wanting to hit 1000mhz as well but was worried about the voltage, and getting it up there too high
flashed it with the asus bios and this card is AMAZING! Im so glad I grabbed this one over the 470 coming out!!
I've had both of mine 5850s up to 1.30v and load temp during Furmark went up to about 70C although I did have both cards running @ 100% fan speed as well as i took off the side panel and used two mini room fans at max speed blowing directly onto the mobo
, which is very loud as you can imagine, but that did not last long as my 5850s just wont't stay stable at mem clock of 1200 or higher no matter how much volts i put in, even up to 1.35v.
But from just glancing at posts in the 1000mhz club thread, most people have it at around 1.2 - 1.25 volts and most are just the stock air coolers, some people are able to get it stable at much lower voltage but of course with OCing each card will be a bit different.
Originally Posted by EasyC
I have a Sapphire 5850 on the way, I'm assuming I'll need to flash it to OC it. I thought though there was something you change in the MSI Afterburner config to get higher clocks?
i dont think you need to change any config file for MSI Afterburner, that may have been something outdated that no longer needs to be done. In the settings it has checkbox to unlock voltage and clock speeds. But yeah with my 5850s, it wouldn't let me go higher than 775/1125 core/mem clocks until I flashed with the Asus BIOS. Good luck man!Edited by nist7 - 3/28/10 at 7:11pm