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Help Me Solve my 5770 Crossfire Issue... Please! ;)

TaKeN

TaKeN

TaKeN

Soldato
Joined
18 Aug 2005
Posts
13,188
Location
Shropshire
EDIT 11/12/09 - Sorted Now - See Post #41


Motherboard : Abit IP35 Pro (PCi 1.0) 16x - 4x (PCi Express slots)

CPU : Intel C2D E8400 @ 3800ish Mhz

GPU : Asus EAH5770 Voltage Tweak x 2

OS : Windows 7 64bit Retail.

3dMarkVantage Scores - Two cards in Crossfire 13348 < GPU Score

Disable Crossfire - Card in 16x Slot scores 9108, Card in 4x slot scores 8048

Drivers : Cat 9.11s c/w Dirt 2 hotfix

The Problem?

Very low FPS in Dirt 2 demo on high settings where other 5770 peeps are getting good FPS.

Very poor gameplay in Call Of Duty 4 Modern Warfare, so much so that if I disable crossfire I get a much better playing experiance.

I thought that the problem might be down to the 4x slot holding the card back but the 3dmark score suggests otherwise mebe?

I'm thinking of getting a new motherboard with 16x 16x PCi Express slot.. but am reluctant to go throwing more money at my computer for now ;)

Any suggestions as to what might be causing it to play so badly?

Thanks
 
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Run performance monitor or task manager/performance and check what your cpu does whilst running these tests just to rule that out, I'll be surprised if the CPU is holding it back though.

Check for recent bios update for motherboard as well.

Stop all overclocking including cpu and see if that fixes it.
 
I'd be intrested to hear how you get on with this issue Taken. I'm thinking off buying 2 asus 5770's but im also using a mb with the p35 chipset. I was thinking of upgrading my mb found a DFI LanParty LT X48-T2R for just over a hundred quid all the reviews seem to rate it quite highly but would gladly stick with my ds4-p35 if it will be ok.

There seems to be a lot of conflicting info on review sites regarding x4 pci express slots and xfire.

Anyway good luck ;)
 
Your vantage scores look OK to me.

Some things to try:
Make sure power plan is set to "high performance". I had mine set to balanced and it made crossfire vantage scores drop to 11k.
Try connecting both single and double crossfire bridges?
Do you have an option to set your 16x slot to 4x so youre running 4x/4x - just to see if its unbalanced?
 
also worth applying defaults in catylst control centre for both cards, and the double check crossfire is enabled
 
Thanks for the replys, I've just testing both cards out in COD 4 MW INDIVIDUALY by disabling crossfire in ATi CCC and changing the dvi lead from one GPU to the other.

The results have left me rather stired :p

singlecard4xslot.png


singlecard16xslot.png


First I tested the 4x slot and imediately noticed some rather choppy COD 4 performance, as you can see the FPS is constantly up and down.

Secondly I tested the 16x and the difference was day/night. Nice smooth gameplay.

Tommorow I'll be trying to card that was in the 4x slot in the faster slot to see if the FPS is still up/down as this might suggest a dodgy card.
 
Can't see why you went with crossfire option if your board was 16 + 4. I think this might be an issue with the unbalance 16 + 4 setup you have, although i'd let the more technically aware people step in. Hope it gets solved for ya fella.
 
To be honest I think it's your motherboard holding you back, keep everything else the same upgrade to a cheap X48 board and ddr3, you wont even have to format, as intel drivers are pretty much the same.
 
It's most likely that it's PCIE v1.0 AND it's at 8x + 4x that's killing it off. If it was PCIE v2.0 8x + 4x you wouldn't be having the problems you are seeing now.

Get any mobo that has PCIE v2.0 or upwards that still uses your CPU and DDR2 RAM and you'll be good to go. Since it's old tech it will be dirt cheap on MM :)
 
It is the 4x slot.

Absolutely kills CF performance and gives you the choppy play you talk about.

For some reason 3DM doesn't seem to care, but games do. Had the exact same issue when I tried to run 2 x 4850's on a P35 mobo.

Change to a P45/X38/X48 and you'll be fine.
 
New Mobo it is then! Thanks for the replys.

I've been looking at the DFI LANPARTY DK P45-T2RS is this a good board for overclocking?

I've currently got some G.Skill PK 4GB (2x2GB) DDR2 PC2-8500C5 and want to keep that :p
 
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