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Crossfire 5770 + 3870?
- Thread starter Seraphic
- Start date
polarman5k
Limp Gawd
- Joined
- May 20, 2009
- Messages
- 181
Dont believe it can be done. Have to be of the same series at least for Xfire (HD5xxx, HD4xxx, etc)
- Joined
- Jan 18, 2003
- Messages
- 3,054
The only thing I have heard about this is way back someone crossfired a 3870 and a 4850. The performance was less than impressive, I would call it bad actually.
Basically there is very little point.
Basically there is very little point.
edifyingkarma
[H]ard|Gawd
- Joined
- Mar 8, 2008
- Messages
- 1,464
Wont do it
even if you could it would be like crossfiring 2 3870's as the 5770 would just sit there and wait on the 3870
(if it were possible)
I don't think this is true as AMD crossfire does not scale down the fastest card to the slowest card.
For example, 4850+4870 > 4850CF
The only time this mattered is if one card had less VRAM than the other, in which case the total VRAM would be the lowest denominator.
Yeah but even if this were possible it would be a waste of your time.
enjoy:
http://game.amd.com/us-en/content/images/crossfirex/CF_combo_chart.jpg
the 3800 series can also be paired with a 2900 series board, which has been removed from the chart (Simply to make room for the 5800 series boards)
no other combinations are available
using a Lucid Hydra based mainboard you could pair them together, however the performance would be less than the single 5770, as Guru3D demonstrated, pairing a 4870 and 5870 together:
http://www.guru3d.com/article/msi-big-bang-fuzion-lucid-hydra-review-test/26
kppanic:
it does not work that way, its symmetric multi-processing, just like SLI, Multi-Chrome, etc, it requires the processors to carry equal portions of the compute load, which is why you cannot add a 4350 to a 4870 and gain performance
http://game.amd.com/us-en/content/images/crossfirex/CF_combo_chart.jpg
the 3800 series can also be paired with a 2900 series board, which has been removed from the chart (Simply to make room for the 5800 series boards)
no other combinations are available
using a Lucid Hydra based mainboard you could pair them together, however the performance would be less than the single 5770, as Guru3D demonstrated, pairing a 4870 and 5870 together:
http://www.guru3d.com/article/msi-big-bang-fuzion-lucid-hydra-review-test/26
kppanic:
it does not work that way, its symmetric multi-processing, just like SLI, Multi-Chrome, etc, it requires the processors to carry equal portions of the compute load, which is why you cannot add a 4350 to a 4870 and gain performance