Tom's Hardware > Forum > Graphic & Displays > Graphics Cards > Please help!3870 two cards in crossfire running worse than single card

Please help!3870 two cards in crossfire running worse than single card

Forum Graphic & Displays : Graphics Cards - Please help!3870 two cards in crossfire running worse than single card

Tom's Hardware: Over 1.4 million members in 6 different countries available to answer all your high-tech questions. Sign up now! Its free!
Ask the community Add a reply
Word :    Username :           
 
stcboaz   07-26-2009 at 07:40:45 AM

Hello, the other day i got two 3870 hd graphics cards 1 is 512mb ddr4 and th other is 1024mb ddr3 both diamond series my motherboard is a asrock 780gxe/128m which is crossfire ready but in crossfire they run at 8x + 8x and all my games dropped in quality i play conan, crysis, world at war and fallout 3 eq2 as well but with the 2 cards running i could only run conan on low crysis on med but with noticeable glitches in both if i went any higher, pulled the 3870 hd 512mb one out and now i can run everything on high no problems so if someone could help understand why it was worse with 2 cards it would be greatly appreciated.

So do i need a new motherboard with 2 pci e x16 2.0 slots will that resolve the issue???

Please help,
thanks stcboaz


Message edited by stcboaz on 07-26-2009 at 01:33:23 PM
Add a reply
Sponsored Links
Register or log in to remove.
zipzoomflyhigh   07-26-2009 at 05:04:40 PM
- 0 +

Not only has your pci-e lane cut down from 16x to 8x/8x, but when you crossfire two cards and one has 512mb and the other 1gb, the 1gb card can only use 512mb to match the other card. I'm assuming your probably using a resolution that needs more vram?

Regardless of motherboard, your 1gb card is now only a 512mb card. Not only that, I highly doubt your X2 6000 than keep up with both cards.


Message edited by zipzoomflyhigh on 07-26-2009 at 05:06:17 PM
Reply to zipzoomflyhigh
Ask the community Add a reply
Tom's Hardware > Forum > Graphic & Displays > Graphics Cards > Please help!3870 two cards in crossfire running worse than single card
Go to:

There are 1279 identified and unidentified users. To see the list of identified users, Click here.

Forum map
Bestofmedia Forum ©
2000-2009 Bestofmedia Group
Page generated in 0.497 seconds
Sponsored links
  • Ask the community now
  • Publish
Ad
Related Topics
See all relatives topics
They won a badge
Join us in greeting them