Help With Crossfire

[Hayder_Master]

i think you need a new psu , something like 1000w , and try the last driver 8.9 i hear it is really good for crossfire

[fishnchips]

Fron what i hear and what my manual says, in order for crossfire to work you need two id cards for crossfire. mabey thats the problem. two different cards in the system.

[POOLESOFT]

Thanks For The Advice , But Still Dont Work ? ................new Power Supply Time
(next Month)

[POOLESOFT]

any other subjustions ?

[erocker]

Originally Posted by fishnchips

Fron what i hear and what my manual says, in order for crossfire to work you need two id cards for crossfire. mabey thats the problem. two different cards in the system.

No, any combinations of 4850's and 4870's should work. Perhaps it is PSU time...

[Tatty_One]

Originally Posted by Wile E

My guess is the psu. Ultra does not make very good psus. Look to grab a Corsair, Seasonic, PCP&C, Tagan, Thermaltake Toughpower and there are a few others.

750W is enough if you have a psu from one of those makers. The Ultra psu isn't really 750W.

Any one of these should do:

http://www.newegg.com/Product/Produc...82E16817703009

http://www.newegg.com/Product/Produc...82E16817139006

http://www.newegg.com/Product/Produc...82E16817703019

Or, if you have any extra money, get a higher wattage unit from any one of those makers listed above, to give you some extra headroom for future upgrades.

You just beat me to that!

[Binge]

Originally Posted by hayder.master

i think you need a new psu , something like 1000w , and try the last driver 8.9 i hear it is really good for crossfire

1000w psu is not a must... 850w would be more than enough unless he ran a bunch of hard drives. I've run 2x 4870 on 900w.

[BrooksyX]

The corsair TX 750w psu is $83 after $20 mail in rebate with free shipping from buy.com:
http://www.buy.com/prod/corsair-tx-7...206178325.html

[Tatty_One]

I am guessing that a 4870 and 4850 are not going to draw anymore power than a HD4870x2, according to Corsairs power configurator (which I find tends to be one of the better ones although I am not a great beleiver in them personally), that coupled with a overclocked dual core and a couple of hard drives will work on anything Corsair 620W and above, I really dont think there is any need to go above 750W, especially if on a budget.............BrooksyX recommendation above is sound advice IMO...............

http://www.corsair.com/psufinder/default.aspx

[Binge]

I don't think that's true... a x2 is actually able to run on high end 550W PSUs

[fishnchips]

Well in my honest opnion its better to have a system haveing full power draw, than straining to get what it needs there for taxing other things on board the system. like all thing's it runs standard, when it starts to work or work hard it needs xtra power. so adding xtra power will let the system use what it needs without stressing other things. but thats how i see things

[Hayder_Master]

Originally Posted by fishnchips

Fron what i hear and what my manual says, in order for crossfire to work you need two id cards for crossfire. mabey thats the problem. two different cards in the system.

no at all , you can crossfire any ati card but they should be same series like any two or more 4000 series card's or any 3000 series card's

[Tatty_One]

Originally Posted by fishnchips

Well in my honest opnion its better to have a system haveing full power draw, than straining to get what it needs there for taxing other things on board the system. like all thing's it runs standard, when it starts to work or work hard it needs xtra power. so adding xtra power will let the system use what it needs without stressing other things. but thats how i see things

Exactly, which is why I would recommend a 750.......550w may well run a x2 but whether it runs it WELL may be slightly different but I have no doubts about one thing.....most people do tend to exaggerate their power requirements.

[PCpraiser100]

There is no problem with your PSU, any PSU can run Crossfired video cards its just that it is not recomended since there is a risk of dying out the PSU overtime of you connect too many of it's connectors. I suggest leaving 2 to 4 connectors of any kind untouched to extend the lifespan of your PSU. If you can't then you should get a new PSU of you want a long lasting one. There is no need to get very high wattage if you want durability, that stuff is in the dust now that PSUs are getting newer capacitors and upgraded efficiency. If you want a good PSU that is SLI or Xfire compatible, a Corsair HX520 or HX620 will serve you well.

Anyway, hows it going so far?

[zithe]

Originally Posted by hayder.master

no at all , you can crossfire any ati card but they should be same series like any two or more 4000 series card's or any 3000 series card's

Theoretically, it's possible. I've never seen it done successfully. (The cards don't run very well.)

[POOLESOFT]

any one else have any thoughts?

[POOLESOFT]

any one else have any thoughts?

[fishnchips]

run the psu at standard, have a listen... if it hums nicely yerp cool. then run cod4 listen to the hum ..if its louder then its trying to draw xtra oomph not good.

[POOLESOFT]

any one else have any thoughts?

[erocker]

On what? Did you try a different PSU?

[POOLESOFT]

power up 800w still no luck same results (sucks to be me )

[Binge]

Take a look at how to clean drivers in the Graphics Card section. It's a sticky and it's easy to read/understand. If you follow it to the letter then you'll have the most clean atmosphere for your cards to work in. Hope you overcome

[erocker]

Let's try this:

Run your system at stock settings. Be sure to set your RAM to it's proper voltage and timings.

Follow this guide:

http://forums.techpowerup.com/showthread.php?t=52502

Install this Direct X End-User Runtime:

http://www.microsoft.com/downloads/d...displaylang=en -When it asks to run or save, click run.

Give your games a try, it should work barring any hardware failing problems. If everything is working then go on to overclocking your system.

[fishnchips]

800psu should be enough mabey its on the way out who knows..

[POOLESOFT]

i'v been through 3 restors so far , but will try another on an old 80gig drive ......





with vista 32 maybe 64 is the problem