Crossfire dead 4850X2

[Peen]

I can't get crossfire enabled on my card, its a Sapphire 4850x2 1GB. It used to work, but cant get it to turn on it W7 or Vista with any drivers. It has quad DVI and only the top 2 work the bottom don't seem to do anything. Not sure what could have killed it...?

Anyone have any ideas? In the drivers it says 4850x2 PCI-E 16X...etc,etc Cat 9.6

I can't figure it out will probably have to RMA again. I hate sapphire!

[Peen]

Anyone??? Seems like its dead, tried everything. But I got a new board so not sure if it's whats causing it. I don't have any other to test it in..

[varrius]

This is a common issue.

Try this - first try each card individually to ensure they are working.

Next - if they are, it's software.

Uninstall cat 9.6 - i had issues like this too.

Reinstall drivers - cat 9.3

If it still doesn't work, being you have a new board, update the bios. Some boards won't recognize it without a bios update.

Finally, report back.

Also, read this, it's been happening to people since 8.11

http://forums.amd.com/game/messagevi...hreadid=104951

DO NOT RMA until you confirm that one card, in individual mode, is not working.

It cannot be the motherboards hardware since unlike sli it doesn't rely on the motherboard.

i.e. NF200 chip on X58.

NOTE: I have the exact same board as you, same processor, etc. It happened to me. I fixed it with 9.3

[varrius]

Make sure you're using DFI's latest bios.

[Peen]

It's not two cards, its a 4850x2 single card. And I've tried about 4 mobo bios, and Im pretty sure my MSI x58m didn't work with xfire either but thought it was just a driver issue so didn't mess with it...

So 2 OS'es, 3 drivers, few bios changes and so far nothing has worked! =(

[varrius]

I'm not sure what you mean, then.

For a single X2 card, the dual GPUs are always enabled, there's no "enable option".

[Peen]

There is an enable option, I know this because there used to be a crossfire button. And the fact that I'm getting single 4850 performance.

This is the card I have http://www.newegg.com/Product/Produc...82E16814102813

Just tried 9.3's both fresh install of Vista and W7 still no go, even tried driver cd drivers...this is pissing me off 5 things have dead on me in last 2 weeks wtf

[varrius]

I can promise you, there is no crossfire enable button on any X2 card. If you go into CCC, advanced mode, then ATI overdrive, unlock it - you will see two GPUs in the drop down menu.

Your card is a single card with two GPUs attached to it. They are recognized by your system as one single card solution, which is the point of the x2.

Trust me. Unless you have two 4850x2s, you cannot "enable" crossfire with software.

Further, your low bench marks could be due to a stock clocked CPU bottleneck.

[Peen]

I know it used to say Xfire right when I installed the driver it said "Crossfire card detected, enable?" or something close to that Plus, GPU-z isn't showing it as 1600SP and the x2 specs like it used to. And I already unlucked it like you said. unless a driver changed something recently....I have some time to tinker now, just got done cleaning my filthy ass garage lol. but I'm 110% sure it said Crossfire in CCC.

And I do remember when I got it that it had the Xfire button because I made it a 4850x1 to see the performance difference

oh ya and In the drop down it only shows 1 card not 2

My cpu isn't stock clock its 4.2ghz

3dmark06 only getting 13k. Used to get 23-24k on Core2 system

[slpdLoad]

I can promise you, there is no crossfire enable button on any X2 card. If you go into CCC, advanced mode, then ATI overdrive, unlock it - you will see two GPUs in the drop down menu.

Your card is a single card with two GPUs attached to it. They are recognized by your system as one single card solution, which is the point of the x2.

Trust me. Unless you have two 4850x2s, you cannot "enable" crossfire with software.

Further, your low bench marks could be due to a stock clocked CPU bottleneck.

Sorry, this is incorrect.

I've got a 4850x2 as well, and there most definitely is an option to turn crossfire on and off. It does not act exactly like a single GPU. If a game doesn't support crossfire, then you only get the performance of a single 4850.

[varrius]

I stand corrected. I have a 4870x2 and it doesn't have a crossfire option since it's a single PCB, i understand now.

[slpdLoad]

4850x2s are single PCB as well though...

[Peen]

Yeah I wish I knew if it was the motherboard or the card because I don't have anymore motherboards to try it in

[Dragy2k]

have you tryed reseating the card ?

[Peen]

Ya I have tried it in 2 different slots too.

[bluc]

sorry to hijack just quick question.I have two 3850 oc edition cards in crossfire would upgrading to 4850x2 give a large performance increase? By the way do you have a mate that would let ya try ya card in there computer might be worth a try?