Author

Topic: 5800 series crossfire questions (Read 848 times)

sr. member
Activity: 462
Merit: 250
May 27, 2013, 04:41:19 PM
#10
Crossfire is moot for mining. Period. OpenCL will continue to see each GPU as individual devices that you can mine on one at a time. Crossfire -only- has advantages for gaming. That's it.

Once again! Speaking in theory of gaming performance! Read the comments of the thread before posting!

This is a mining forum.  There's millions of gaming forums.  If you ask these questions on a mining forum, what do you expect?  Roll Eyes

Besides, Crossfire is broken on ATI cards - Google "micro stuttering".  Crossfire at the moment is a big waste of time and effort.

I have 2 7870's in my main rig and I've never been affected by micro-stuttering all the Nvidia fanboys yap about.
hero member
Activity: 1246
Merit: 501
May 26, 2013, 04:43:44 AM
#9
Crossfire is moot for mining. Period. OpenCL will continue to see each GPU as individual devices that you can mine on one at a time. Crossfire -only- has advantages for gaming. That's it.

Once again! Speaking in theory of gaming performance! Read the comments of the thread before posting!

This is a mining forum.  There's millions of gaming forums.  If you ask these questions on a mining forum, what do you expect?  Roll Eyes

Besides, Crossfire is broken on ATI cards - Google "micro stuttering".  Crossfire at the moment is a big waste of time and effort.
legendary
Activity: 1344
Merit: 1004
May 26, 2013, 02:45:16 AM
#8
Once again! Speaking in theory of gaming performance! Read the comments of the thread before posting!

What the fuck are you talking about then? Did you read the part where I said "Crossfire -only- has advantages for gaming."? Yes you can tri fire those cards in that configuration in that manner. Plug them in, and read gpu caps viewer, should say crossfire enabled 3 Gpus
sr. member
Activity: 462
Merit: 250
May 26, 2013, 01:32:05 AM
#7
Crossfire is moot for mining. Period. OpenCL will continue to see each GPU as individual devices that you can mine on one at a time. Crossfire -only- has advantages for gaming. That's it.

Once again! Speaking in theory of gaming performance! Read the comments of the thread before posting!
legendary
Activity: 1344
Merit: 1004
May 23, 2013, 09:45:49 PM
#6
Crossfire is moot for mining. Period. OpenCL will continue to see each GPU as individual devices that you can mine on one at a time. Crossfire -only- has advantages for gaming. That's it.
legendary
Activity: 1268
Merit: 1009
May 23, 2013, 04:49:08 PM
#5
In theory is should work.  Unfortunately I can't test it so I guess we just have to wait  Cry
sr. member
Activity: 462
Merit: 250
May 23, 2013, 04:13:08 PM
#4
the crossfire brdge has no interest in a mining point of view.

If you want to play games, putting a slower/less performing cards in the crossfire will decrease the perf.

I'm not really talking in terms of mining, I'm talking about performance. And if you put 1+1 together you're not going to get 0.9, your going to get better performance. Just not as much as a person would get with 2 x 5870's.
full member
Activity: 164
Merit: 100
May 22, 2013, 11:46:43 PM
#3
the crossfire brdge has no interest in a mining point of view.

If you want to play games, putting a slower/less performing cards in the crossfire will decrease the perf.
sr. member
Activity: 462
Merit: 250
May 22, 2013, 11:30:11 PM
#2
Keeping in mind that the last connector is a long one so it could stretch over to the left hand side again.
sr. member
Activity: 462
Merit: 250
May 22, 2013, 11:29:06 PM
#1
I've always wondered, you know how the 5870 has 2 crossfire fingers and the 5850's and 5830's only have one? Would a person be able to put a 5850 as the top card, 5870 as the middle, and another 5850 on the bottom so you could chain all three?

As demontrated:

+ = one finger/connector
++ = two fingers/connectors
| = a link, or bridge


Done as:
+    5850
|
++  5870
  |
  +  5850

Instead of the regular:
++  5870
|
++  5870
  |
++  5870


If someone could test this and confirm if it works that'd be awesome. Anyway, off to the bar!
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