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post #281 of 352
i would LOVE to see what these cards crossfired could do with a 4ghz OC on the proc aswell.

but for me that would be a false economy. maybe only a 9-10 fps increase, for a $100 spend to get an extra 150 watts over what i already have.
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post #282 of 352
Okay well after my audio upgrade might be able to scrape together enough to pick up one for crossfire. Otherwise I can bench at 1060/1240, but only game at 1060/1230

Gonna try getting some more core clocks on this baby on Monday - funny I don't encounter any problems at higher core and memory, my scores just drop - hopefully it doesn't explode *touches wood

Benching: 1060/1240 | Gaming: 1060/1230
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post #283 of 352
Ok, I seem to have solved, I raised the cpu voltage, just a little, because(because the cpu was a phenom ii X2 unlocked to X4) ... Now I can play crysis 2 at 900/1000, later I will try again to raise the frequency
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post #284 of 352
i've heard of this before

i turned down my volts, now i bench faster (slightly), i guess due to more watts being available, but my graphics card can't even hold previously safe clocks for more than 10 mins in game >.<

how are the cpu voltage and the graphics card related?

maybe somehow the cpu stealing some v's is keeping the gcard capped at a certain amount so it doesn't overheat.
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post #285 of 352
was just removing one of my cards to try for more lines when i accidentally touched the mosfet (the black heatink next to the fan) and burned myself! the comp had only been off for a few seconds but i had no idea the power converters were getting so hot. i rubbed off some lines with my fingers so hopefully that will reduce the voltage a little.

does anyone at stock get hot mosfet after playing for a while aswell?

EDIT: turning the vcore up on my cpu seemed to kinda fix this =/
Edited by JunoNH - 8/26/11 at 5:28pm
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post #286 of 352
hi guys can u hellp me i got a sapphire 5670 1 GB DDR5 but it does not have a crossfire head and on the box it is said i supports crossfire. Another thing i cant tweak with the volts is there a way i can tweak with the voltages??? here check this image i have this one
post #287 of 352
Quote:
Originally Posted by Tarun View Post
hi guys can u hellp me i got a sapphire 5670 1 GB DDR5 but it does not have a crossfire head and on the box it is said i supports crossfire. Another thing i cant tweak with the volts is there a way i can tweak with the voltages??? here check this image i have this one
all the data will flow across the pcie lanes. no extra connections are required at this level of data exchange. this was originally called software crossfire, but currently its just lumped into generic crossfirex as most cards/boards can do this (to some degree) now.

also the 5670 draws all it's power from pcie lanes alone. there is some debate as to how much power exactly the pcie 2 x16 port can provide, but 120 seems a reasonable maximum. better boards can support more.

if you plan on crossfiring, you'll need a decent board to power 2 cards soley from pcie, and plenty of watts on your 12v's. AMD suggests 35amp/420 watts minimum, but i'd say thats not really enough, especially if your holding a cpu OC aswell. 750w brand psu should have you covered safely on everything.
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post #288 of 352
Quote:
Originally Posted by Tarun View Post
hi guys can u hellp me i got a sapphire 5670 1 GB DDR5 but it does not have a crossfire head and on the box it is said i supports crossfire. Another thing i cant tweak with the volts is there a way i can tweak with the voltages??? here check this image i have this one
Well like my Asus card there is no way to tweak the voltage software-wise, it all has to be done with a pencil (draw lines on resistors etc). Now not sure where the volt-modding instructions for the Sapphire card are... I'm sure someone here will help.
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post #289 of 352
For a sapphire here are the images you need.

http://img232.imageshack.us/img232/3679/s6303495.jpg - this is on the rear of the card, top right.

http://www.imgftw.net/img//968747111.jpg - this is what you need

http://www.imgftw.net/img//307857810.png - this is what you should do with it
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post #290 of 352
any 2b will do. using higher b will require less lines, but also increases the margin with which to make an error.

you can go pretty much ape**** with HB and get a result. check your mosfet for overheating after a while under load (i'd advice turning your machine off when doing this). it should be very warm, but not hot enough to burn you immediately. if you can hold on for 3 seconds without serious discomfort it should be ok.

http://img546.imageshack.us/img546/8292/51coc4fu45l.jpg - this is the mosfet heatsink

http://en.wikipedia.org/wiki/Power_MOSFET

another thing to check is your gpu temps. GPU-Z is good for this, and will let you check both if your in crossfire (trixx doesn't). in a decent air cooled case your looking for no higher than 70 degree's at 100% fan, with overclock, at load. Idle's should be in the 30's (idling at 40 is a bad sign of significant overvolting). to be sure let it sit at idle for 5 minutes before taking your final temp.
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