Topic Title: HD 48xx series - no CrossFire in Windows 7?
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Created On: 09/01/2014 12:35 AM
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 09/01/2014 12:35 AM
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danotheoverlord
Peon

Posts: 4
Joined: 09/01/2014

Issue Details
Perhaps this is a known issue, and if so, I apologize. My searches online have not yielded anything in that regard. However, here is what is going on: I am unable to enable CrossFire since moving to Windows 7. XP had no issues with CrossFire, nor did Vista, but Windows 7 has been like this since the drivers moved into “legacy” state.

In fact, CCC shows my 2nd adapter as being disabled, though nothing in Windows states this, so not sure which to believe. Regardless, there is no option in CCC that I can find to even begin to turn CrossFire on/off. Perhaps this is just a glitch in the way these things are reported in CCC, but when I use Speccy (from Piriform), it shows CrossFire is disabled, so I’ve gotta believe that something is amiss here.

I'm coming here as a last resort before I move to another card entirely. This crossfire combo should be a workhorse - even by today's standards. If you need more info from me, I'll give you what I have.

Graphics Card
Dual HD 4850 with CrossFire from Dell:
Manufacturer - ATI
Model - Radeon HD 4800 Series
GPU - RV770
Device ID - 1002-9440
Subvendor - ATI (1002)

AMD Catalyst Driver Version, and Driver History
Currently using 12.6, but was using 13.9. Both have the same behavior. 13.1 is not a valid 32-bit app according to Windows 7, so I’ve never used that one.

Operating System
Windows 7 Professional 64-bit SP1

Motherboard or System Make & Model
Manufacturer Dell Inc
Model 0PP150 (Socket 775)
Version Unknow
Chipset Vendor NVIDIA
Chipset Model nForce 650i SLI SPP
Chipset Revision A2
Southbridge Vendor NVIDIA
Southbridge Model nForce 650i SLI MCP
Southbridge Revision A3

Display Device(s) and Connection(s) Used
Samsing SyncMater P2570 via Digital input

CPU Details
Intel Core 2 Quad Q9550:
Cores - 4
Threads - 4
Name - Intel Core 2 Quad Q9550
Code Name - Yorkfield
Package - Socket 775 LGA
Technology - 45nm
Specification - Intel Core2 Quad CPU Q9550 @ 2.83GHz

Motherboard BIOS Version
Brand - Dell Inc.
Version - 1.0.13
Date - 5/5/2009

System Memory Type & Amount
Type - DDR2
Size - 8192 MBytes

Additional Hardware
500gb SATA in RAID configuration

Additional Details
Numerous slot swaps, re-cabling, & driver reinstalls (using clean method).

 09/01/2014 08:06 AM
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black_zion
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Joined: 04/17/2008

An nVidia chipset is why you can't use Crossfire, Dell was using some trickery for you to be able to use it in XP. A R7 260X will give you more performance than the 4850s, but you need to look at an entire system update.

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ASUS Sabertooth 990FX/Gen3 R2, FX-8350 w/ Corsair H60, 8 GiB G.SKILL RipjawsX DDR3-2133, XFX HD 7970 Ghz, 512GB Vertex 4, 256GB Vector, 240GB Agility 3, Creative X-Fi Titanium w/ Creative Gigaworks S750, SeaSonic X750, HP ZR2440w, Win 7 Ultimate x64
 09/01/2014 03:18 PM
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danotheoverlord
Peon

Posts: 4
Joined: 09/01/2014

Originally posted by: black_zion An nVidia chipset is why you can't use Crossfire, Dell was using some trickery for you to be able to use it in XP. A R7 260X will give you more performance than the 4850s, but you need to look at an entire system update.

Why would the motherboard chipset have any bearing on the discreet graphics cards working in CrossFire mode? Even after I did a reformat-and-reinstall of vanilla XP provided me with CrossFire ability using ATI drivers.

 09/01/2014 03:41 PM
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black_zion
80 Column Mind

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Joined: 04/17/2008

nVidia chipset, AMD cards.

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ASUS Sabertooth 990FX/Gen3 R2, FX-8350 w/ Corsair H60, 8 GiB G.SKILL RipjawsX DDR3-2133, XFX HD 7970 Ghz, 512GB Vertex 4, 256GB Vector, 240GB Agility 3, Creative X-Fi Titanium w/ Creative Gigaworks S750, SeaSonic X750, HP ZR2440w, Win 7 Ultimate x64
 09/01/2014 03:47 PM
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danotheoverlord
Peon

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Joined: 09/01/2014

Originally posted by: black_zion nVidia chipset, AMD cards.

Still not following the logic here. Can you point me to some AMD-based information that supports your assertion? The motherboard does not have any video onboard, so the nVidia chipsets are for audio, networking, etc.. How would this in any way interfere with utilizing CrossFire in discreet cards designed for CrossFire? Also, as stated, I have been able to use CrossFire successfully using a vanilla install of XP and Vista with the ATI/AMD drivers.

 09/02/2014 09:21 AM
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danotheoverlord
Peon

Posts: 4
Joined: 09/01/2014

Tech support has reached out in reply to my request (about 24 hours turnaround on a holiday weekend!).

I was provided instructions to do a clean install of 13.1 drivers (again). They also advised to use a product called "Driver Fusion" available on the Major Geeks website. This app was useless as it would not run, and installed some other garbage. So, I used DDU, which works well.

This guidance resulted in no change from current behavior, but I have to note that the support personnel did not state that nVidia motherboard chipsets would interfere with CrossFire functioning properly.

I am waiting on their next path of remediation, and will update once I have tried that.

 09/02/2014 09:00 PM
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Thanny
Alpha Geek

Posts: 1459
Joined: 07/13/2009

nForce chipsets do not support Crossfire.  There are ways around it (system BIOS patch, graphics card BIOS patch, or modified driver), but it's a fact.

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