Originally Posted by Prozillah
Update on Xfire Gigabyte 290's Windforce temps:
Bf4 64p Multi seems sweet but 5 passes of Metro last light bench kicks there arse. At stock clocks I get a slight amount of throttling happening on top card - dips about 10-20mhz. Maxes at 84c and doesnt go hotter but VRM1 maxes at 91c so that's definitely getting up there. Now the cards in Xfire will do 1120 on the core with no power % increase or Volts. But the throttle becomes much more noticeable with drops around 900 - 1000 odd mhz and so on.
I'm going to try a nice powerful 120mm fan on the side of the case to see if I can suck as much hot air away as possible (blowing at my feet isnt really going to be enjoyable but I'll deal with it...) and see if that helps temps at all.
HOWEVER - considering I've always run my OC's to the programs I use & play I may increase the OC if the temps stay low in BF4. The goal being the highest core clock I can go without reaching 83c.
If anyone has a pair of these and can offer any tips or tricks send it my way!
I'm on single Powercolor PCS+ card, waiting on 290 Tri-X, but a few thoughts.
When running MetroLL bench as a test, you need more than 5 passes. If I get a problem, it's almost always at pass 8-10, and then again at 15-18. Happens consistently. For throttling, are you sure it's throttling? What oc app you using and what are your settings? Because I had Afterburner set up wrong and clock was fluctuating. You need to have "Extend Official Overclocking Limits" off and "Unofficial Overclocking Mode" set to disabled. I was getting that same thing, clock set to 1200 which I knew was stable but operating at 900-1000. It has to do with Powertune.
Originally Posted by Imprezzion
Well, on a nvidia GTX7xx you absolutely don't want Elpida as they barely leave for +100Mhz of OC room...
On my unlocked 290 (XFX) however the Elpida ain't even half bad and runs and clocks just fine.
Btw, does anyone know why my card scales so crappy with voltage? When I use the ASUS BIOS and do +50mV (about 1.12v load) and unlimited power limit it does 1140Mhz core. Not too bad. However, when I go all the way to say, +200mV (1.21v load) it still won't get nowhere near 1200Mhz. Like, 1180Mhz or something is max if that's even stable to begin with..
Now, why would it respond SO bad on voltage??
It's cooled with a Accelero Xtreme III and cut up stock cooler for VRM's.
Temps @ +50mV 1140Mhz core:
VRM2: ~ 54c
Temps @ +200mV 1175Mhz core:
VRM1: ~85c, high but well within limits afaik
VRM2: ~ 56c
Yeah I too think clock gains from increased voltage scale very poorly on my 290. So much so that I went back down to stock voltage (Powercolor PCS+ is set to +50mV in bios anyway) and am running 1150 core 1550 clock. It's not worth it going to +100mV just to run 1200 core 1600 mem when the gains are quite small for noticeably higher temps and power draw. Also, I have Elpida and it runs 1600 perfectly.
Your temps are great! Why do some folks bash XFX? They look great, have the best warranty, and look at your temps! I guess my Powercolor with its massive cooler isn't so special lol. Core and vrm2 are actually frosty but vrm1 runs hot, wonder if the heatsink isn't on right. I know vrm1 always runs hottest but it's out of range relative to core and vrm2.