BloodBath wrote: » You should be using max tessellation to stress it. I'm guessing it won't be stable at that voltage. If it is you have 1 great card.
marco_polo wrote: » Looks good so far, the lower the voltage it takes to reach your target clock the better.
Gumbi wrote: » It seems like I can't run high voltages on my setup. I'll overheat! But here's the good news: I'm stable at 1200mhz core @ 1063mV, looped through the the heaven benchmark once, ezpz, temps only reached 65 degrees (auto fan temps) :D Scored 2137. Am I on the right track? Thanks! (Everything maxed no tessellation).
Serephucus wrote: » I'd stick with 2x2TB. You could do 4x1 RAID5, but it would be a lot more intensive, and probably wouldn't leave you with too much CPU power to spare. You could do 4x1 RAID10, but that seems a little messy, with more points of failure.
Eboggles wrote: » Heaven's perfect. You're looking pretty good, voltage wise. For example, my HD7950 won't run 1150mhz under 1256mv after I updated my BIOS to a bonky one uploaded by sapphire themselves. I'm on a HD7970 Ghz one now and I seem to be ok... There are so many variables to take into account when comparing overclocks e.g temperature, vDroop (the new Trixx is going to have Load Line Calibration options) and power limits so its hard to say if your card is going to turn out okay. It wouldn't be great to see you thermally limited, as I'm sure there's a lot of juice in that card.
Gumbi wrote: » Fair enough. How about looping the Heaven benchmark? Do you have any comment regarding my temperature voltage ratios? Does it seem like I have a particularly bad/good card, or am I looking good so far?
Eboggles wrote: » I never test with Furmark as it just shows how much punishment your card can take before it craps out, as opposed to determining whether or not it's stable. Just run your most demanding game at the highest IQ settings, and once you're happy with it, save your settings. When your card fails Furmark, it doesn't mean it's totally unstable, it just means that when placed in a situation that does not represent gaming load, it can't cope.
Gumbi wrote: » Maybe I don't need that much voltage? Preliminary testing (1 min loop 1080p preset of Furmark) with fan manually set at 70% with 1150mhz core @ 1063mV went fine. Temps hit 70 at the end, I think, and prob hadn't stabilised by that time (seeing as it was only a 1 min run).
Eboggles wrote: » You know what you should do? Watercool that mofo. Could get 1200, could get 1250, could get 1280, could get 1300... You'll definitely get silence though
Gumbi wrote: » Sapphire 7950 950mhz edition. Furmark isn't stable when I run through it at 1100mhz (which is stable at 1040mV btw) at 1.200mV. I set the fan at 90%, and it has some slowdowns, freezing at certain points as if it's about to crash, but barely doesn't (and as a result I get min frames of 31 whereas it should always stay at 60). My VRM 1 also hit 115 degrees at that playthrough (other one only hit 60 or something). The fan scraping is also audible. I need to reseat it for sure, the weight of my cables (they're stiff due to the covering I never removed from them, so they prob weigh down more). Hopefully there are only some screws to tighten and it'll all be good However it's not like this would fix the temps much.
BloodBath wrote: » They get unstable above 70c-75c when overclocked. What model of card is it? Those temps are high for that voltage.
BloodBath wrote: » Yes. It ramps up pretty quickly past a certain point. I wouldn't go above 1.3v though. That should be good enough for 1200+ if you can keep it cool enough.
Eboggles wrote: » Then stop. What's that 7950's stock memory clock? When a HD7950 hits 1200mhz, it topples a GTX 680. Seriously, it's the best card eva'.**May be biased due to spending €300 to buy one.
Gumbi wrote: » So try to get 1200mhz core at the lowest voltage, yeah? Right so, will try! I'm not getting any gains in furmark with the mem at 1400.
