Big problems running X1900 in CrossFire

[OC_newbie]

I have a P5WD2-E Premium montherboard with default settings and no overclocking, but when I run 3DMark2006 or Aquamark3 after about 1 minute of running the whole PC restarts. Also I tried disabling crossfire in Catalyst Control Center and it does, then I try 3DMark2006 or Aquamark3 and everything is fine WTF??!! It's only when crossfire is enabled I have this problem. Does anyone know if there's any settings in the BIOS on a ASUS P5WD2-E Premium that I need to set? The Master card is in the blue primary slot and the slave is in the black slot, I check the cables are connected right just like in the pictures everywhere. I heard of people having problems too at this thread http://www.xtremesystems.org/forums/...sfire+settings

Some had to set the two slots to 8x, but I don't see that option in the BIOS at all. Or is there some settings I should have on in Catalyst Control Center under the 3D stuff?? I read that message about turning Catalyst A.I on when using crossfire and I did that, but still having problems
Please is there anyone out there that knows what's going on here?? Thx

[elvicco]

What power supply?

[OC_newbie]

That OCZ 600W unit.

[elvicco]

Then I'm going to guess it's your power supply because according to this graph

those x1900 draw quite alot of power in cf and that's with an fx57, with a oc p4 it would draw even more.

I'm just making a guess though

[OC_newbie]

Originally Posted by elvicco

Then I'm going to guess it's your power supply because according to this graph

those x1900 draw quite alot of power in cf and that's with an fx57, with a oc p4 it would draw even more.

I'm just making a guess though

Yeah that sounds like it could be that, but this is that good OCZ 600 watt PSU with the SLI logo on it, I figure that be enough right? What's everybody else using with crossfire?

[irev210]

*scratches head*

my enermax liberty 500watt ran two 7800gtx cards just fine in SLI...


I am worried about what is to come.

620watt or 850 is the next question, expensive hobbies suck sometimes

[perkam]

Anyone fancy official modded 5.13 X1900 drivers ?

http://download.hightech.com.hk/driv...28709C-ATI.zip

Perkam

[G H Z]

I've heard other people are having problems with The OCZ 600.

[mike]

Prolly the PSU - running CF on the P5WD2-E without any problems so far - 2 PSUs...

[Sampsa]

I've had similar problems with Radeon X1800 CrossFire and Radeon X1900 CrossFire. In my opinion the problem is the PSUs with two or more 12V rails.

[stestan]

Originally Posted by perkam

Anyone fancy official modded 5.13 X1900 drivers ?

http://download.hightech.com.hk/driv...28709C-ATI.zip

Perkam

Thx getting now 50% done

[Cooper]

Originally Posted by Sampsa

I've had similar problems with Radeon X1800 CrossFire and Radeon X1900 CrossFire. In my opinion the problem is the PSUs with two or more 12V rails.

So you saying that one powerfull rail is enough ? Sampsa please tell us more about your PSU. Yeah I know it`s powerfull as hell, but more info would be nice for all those xtreme rig owners

[Sampsa]

Originally Posted by Cooper

So you saying that one powerfull rail is enough ? Sampsa please tell us more about your PSU. Yeah I know it`s powerfull as hell, but more info would be nice for all those xtreme rig owners

Well, I'm only using the monster 1320W PSU for DI/LN2 overclocking. For regular testing I have here Tagan 480W, Silverstone 560W (one 12V rail), Silverstone 600W (four 12V rails), Antec 550W and few others. In my tests Silverstone 600W didn't handle FX-60 + Radeon X1900 CrossFire @ stock speeds.. I had to change to Silverstone 560W which has only one 12V rail.

I noticed that @ default clocks ATI Radeon X1900 XTX draws 24,5 A according to ATITool.

[OC_newbie]

Originally Posted by Sampsa

Well, I'm only using the monster 1320W PSU for DI/LN2 overclocking. For regular testing I have here Tagan 480W, Silverstone 560W (one 12V rail), Silverstone 600W (four 12V rails), Antec 550W and few others. In my tests Silverstone 600W didn't handle FX-60 + Radeon X1900 CrossFire @ stock speeds.. I had to change to Silverstone 560W which has only one 12V rail.

I noticed that @ default clocks ATI Radeon X1900 XTX draws 24,5 A according to ATITool.

SO this OCZ 600w PSU can't run my system? It only has 20A on but 12v rails so thats to low I guess, cuz running just one X1900 XTX work perfect, only when I enable crossfire I get major problems. Thanks for all the help everyone, I learned alot now. So now I should shop for a PSU with 600W or higher with one big 12v rail with 50A?

[OC_newbie]

Originally Posted by perkam

Anyone fancy official modded 5.13 X1900 drivers ?

http://download.hightech.com.hk/driv...28709C-ATI.zip

Perkam

Hmm I'm using the new cat 6.1 drivers and it recognizes both X1900's in the display window, but I hear people saying cat 6.1 doesnt support the X1900's?

[[XC] leviathan18]

you need pcp&c 820w or 1kw

[OC_newbie]

Originally Posted by leviathan18

you need pcp&c 820w or 1kw

You know anyone that has one of those PSU's and runs a dual core cpu and a X1900 crossfire setup? Got a link to buy, cuz I'm really mad at this OCZ 600W unit and I just want one that will work...

[OC_newbie]

Hey Sampsa or anyone else that knows this, but I think I saw a red LED turn on the X1900 slave card right next where you plug the power cable at. It was on for a little bit when the system crashed, this probably means the lack of amps on the 12v rail right?

[[XC] leviathan18]

with your exact system i dont know you can buy them in newegg

brand: pc power and cooling

they are top of the top THG tested the 820 @ full load for days and they were 100% stable you can do a search.

[OC_newbie]

Originally Posted by leviathan18

with your exact system i dont know you can buy them in newegg

brand: pc power and cooling

they are top of the top THG tested the 820 @ full load for days and they were 100% stable you can do a search.

Awesome thanks alot man, I'm looking for a site that sells it right now, I don't even care what price it is I just wanna get it ASAP.

[OC_newbie]

I found it at Newegg.com http://www.newegg.com/Product/Produc...82E16817703003
But why do they say only 16A on each 12V rails, so giving it a total of 32A?
I checked the manufacturer's site and they show it as 66A and 70A peak on the 12V rails together. I guessing the Manufacturer's Site specs are correct and not Newegg.com?

[[XC] leviathan18]

some ppl says you can get them faster in their site.. and cheaper i really dont know

i can tell you for sure the 820w or 1kw is going to hold your systems easily they are very efficient and top PSU and expensive too xD

[macci]

Its says 12V1 16A, 12V2 16A and 12V3 36A - so its (16+16+36) 68A total..

One of these will do nicely too.
Runs 3.5GHz FX60 and X1900XT CF (OCed and increased voltage) smoothly.

[OC_newbie]

Originally Posted by macci

Its says 12V1 16A, 12V2 16A and 12V3 36A - so its (16+16+36) 68A total..

One of these will do nicely too.
Runs 3.5GHz FX60 and X1900XT CF (OCed and increased voltage) smoothly.

Sorry, I'm a mess here I didn't see the 3rd 12V rail.
Yeah I'm looking at that FX700-GLN 700Watts unit your talking about and it looks very good as it has a total of 60A on 12V! It's so much cheaper then the pcp&c 850W PSU, $170 vs. $450 damn lol.

[Sampsa]

Originally Posted by OC_newbie

SO this OCZ 600w PSU can't run my system? It only has 20A on but 12v rails so thats to low I guess, cuz running just one X1900 XTX work perfect, only when I enable crossfire I get major problems. Thanks for all the help everyone, I learned alot now. So now I should shop for a PSU with 600W or higher with one big 12v rail with 50A?

I'm pretty sure it's the PSU which is causing you problems with CrossFire.

PS. Single Radeon X1800 XT shows 38,2 A GPU current draw regarding ATITool... I'm not so sure if this value is the true