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November 23rd, 2008, 02:19 PM
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#1 | | Newbie
|  Please help
Pretty noobish...built my first system this summer. Just installed a second 4870 and trying to run in CF. My system recognizes the card in Device Manager, yet CF is not an option in the CCC? 
Anyone else experience this or have any suggestions?
Thank you in advance,
Deacon | 
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November 23rd, 2008, 02:38 PM
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#2 | | Looking for a new start
| | CPU: AMD Phenom II X3 720 B |
| | RAM: 8GB OCZ DDR Reaper HPC |
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do you have 2 Crossfire connectors installed between the 2 cards? What does GPU-Z show for installed cards | |
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November 23rd, 2008, 02:44 PM
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#3 | | Newbie
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GPU-Z says shows ATI Crossfire is Disabled or Unsure in Vista 64...how to fix?
Oh yeah, only one connector at the moment. Had 2 but same results... | |
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November 23rd, 2008, 02:51 PM
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#4 | | Site Staff
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1. Uninstall ATI Catalyst.
2. Update BIOS to the latest revision.
3. Make sure the cards are in the right slots.
4. Make sure the bridge is connected in the right way.
5. Make sure the VGA/DVI cable is connected to the first card (Right one).
6. Make sure everything is fine inside the BIOS settings.
7. Reinstall the latest ATI Catalyst.
8. GPU-Z can't detect Crossfire on Vista x64, so make sure to use CCC.
Last edited by Regeneration; November 23rd, 2008 at 02:55 PM..
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November 23rd, 2008, 03:01 PM
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#5 | | Looking for a new start
| | CPU: AMD Phenom II X3 720 B |
| | RAM: 8GB OCZ DDR Reaper HPC |
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what model is your motherboard | |
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November 23rd, 2008, 03:12 PM
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#6 | | Newbie
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DFI P35 LanPartyUT | |
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November 23rd, 2008, 03:31 PM
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#7 | | Site Staff
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This motherboard has three PCI Express slots: PCIE1 at x16, PCIE3 at x4 or x1 and PCIE4 at x1. Look for some option in the BIOS that spilts the x16 to dual x8. | |
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November 23rd, 2008, 04:02 PM
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#8 | | Stuck in "April 1st"
| | M/B: Asus Rampage Formula |
| | RAM: G.Skill 2x2GB PI Black |
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Bear in mind the P35 is a very bad chipset for crossfiring and especially more so for dual 4870s. Even when/if you get crossfire working I recommend a motherboard upgrade.
__________________ IQ, when aggregated, follows Ohm's law. | |
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November 23rd, 2008, 04:15 PM
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#9 | | Looking for a new start
| | CPU: AMD Phenom II X3 720 B |
| | RAM: 8GB OCZ DDR Reaper HPC |
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Quote:
Originally Posted by Unixlord  Bear in mind the P35 is a very bad chipset for crossfiring and especially more so for dual 4870s. Even when/if you get crossfire working I recommend a motherboard upgrade. | I have to agree, I have a 2nd 4870 sitting next to me for that very reason. Crossfire sucks on P35 based boards. I did hit 17k in 3DMark06 and P12650 in Vantage but other than that it didnt take long to remove the second card | |
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November 24th, 2008, 02:38 PM
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#10 | | Newbie
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OK, so if I am to upgrade the motherboard, any recommendations?
Thank you,
Deacon | |
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