SLI no worky :(

[Oyeve]

Hi, I just got another 7800GT. Exact same version as my current one, even same bios level. Only probem is SLI is not working. Both cards show up in windows and each works individually but not in SLI. I have an ASRock 939SLI32-eSATA2. I attached everything right, 4pin for SLI, SLI connector between the 2 cards, new drivers, old drivers. No SLI. Might be my PSU as it is only 500w and the 12v rails max out at 34A and I have many devices in my system so I addded a second PSU and shorted the 13th and 14th pins and used it just for the video cards and SLI mobo connection but still no SLI. Any ideas?

 

[Ackmed]

Is there an option in the BIOS to enable SLI? Do you have the SLI page in the control panel for the drivers at all?

 

[moonboy403]

not to insult your intelligence, but have you enabled sli through nvidia control panel?

if it's still not working after it's enabled, you should uninstall your current nvidia display driver first, then installing it again (this method has never failed me)

 

[TheRyuu]

-Uninstall Current Drivers Through Device manager
-Boot up into safe mode (F8 during bootup)
-Run Driver Cleaner Pro
-Reboot
-Install Drivers
-Reboot
-Enable SLI
-Reboot
-Profit

 

[CP5670]

Does SLI still work for that board? There were some posts in the motherboard forum at one point about Nvidia preventing it from working in one of their recent drivers, since it wasn't a nf4 board.

 

[Oyeve]

Originally posted by: Ackmed
Is there an option in the BIOS to enable SLI? Do you have the SLI page in the control panel for the drivers at all?

Nope and there is no option for sli in the nvidia drivers.

 

[Rage187]

Story was first broken by OCW on April 5, 2006 regarding Nvidia's 82.xx and newer Forcewares disabling Uli's PowerExpress SLI driver for M1697 motherboards. This was confirmed in the Epox 1697 review by Jon H. at PC Perspective. Known affected boards are 3 Asrock models - K8SLI, 939SLI and 939SLI32 - and Epox EP-9U1697 GLI. I am unsure how many other lesser known motherboards have implemented 1697 chips with SLI support.

SLI will still work using 81.98 drivers and driver supported scalable video cards. To my understanding, this does not include the 7600 and 7900 lines.

there you go

that took 20 seconds to google

 

[CP5670]

I guess you could just stick with the 81.98 drivers. You will miss out on the recent FEAR performance increase, but that's about it.

 

[TheRyuu]

Fix?
Apparently SLI on any dual PEG board?

Give it a try with the newer 84.22's or some good newer driver.

 

[Oyeve]

Tried all of the above. No SLI. The display properties lets me change settings on either card if I extend my windows desktop. I can see the temps from either card, set up settings for either card, but I see nothing about SLI. This is becoming frustrating. Thanks for the suggestions guys.

 

[nitromullet]

Originally posted by: Rage187

Story was first broken by OCW on April 5, 2006 regarding Nvidia's 82.xx and newer Forcewares disabling Uli's PowerExpress SLI driver for M1697 motherboards. This was confirmed in the Epox 1697 review by Jon H. at PC Perspective. Known affected boards are 3 Asrock models - K8SLI, 939SLI and 939SLI32 - and Epox EP-9U1697 GLI. I am unsure how many other lesser known motherboards have implemented 1697 chips with SLI support.

SLI will still work using 81.98 drivers and driver supported scalable video cards. To my understanding, this does not include the 7600 and 7900 lines.

there you go

that took 20 seconds to google

Wow, that really is ass on NVIDIA'a part... They will let you buy two 7800GT's, but won't let you run them on a motherboard with chipset from a manufacturer they own. If you were trying to run CrossFire, I could see it, but this is ridiculous.

 

[TheRyuu]

Originally posted by: nitromullet

Originally posted by: Rage187

Story was first broken by OCW on April 5, 2006 regarding Nvidia's 82.xx and newer Forcewares disabling Uli's PowerExpress SLI driver for M1697 motherboards. This was confirmed in the Epox 1697 review by Jon H. at PC Perspective. Known affected boards are 3 Asrock models - K8SLI, 939SLI and 939SLI32 - and Epox EP-9U1697 GLI. I am unsure how many other lesser known motherboards have implemented 1697 chips with SLI support.

SLI will still work using 81.98 drivers and driver supported scalable video cards. To my understanding, this does not include the 7600 and 7900 lines.

there you go

that took 20 seconds to google

Wow, that really is ass on NVIDIA'a part... They will let you buy two 7800GT's, but won't let you run them on a motherboard with chipset from a manufacturer they own. If you were trying to run CrossFire, I could see it, but this is ridiculous.

I thought that's what the fix/patch that I linked to earlier would fix and was for. Is there some jumper on the mobo you have to set? Some bios option in the bios?

 

[Oyeve]

Originally posted by: wizboy11

Originally posted by: nitromullet

Originally posted by: Rage187

Story was first broken by OCW on April 5, 2006 regarding Nvidia's 82.xx and newer Forcewares disabling Uli's PowerExpress SLI driver for M1697 motherboards. This was confirmed in the Epox 1697 review by Jon H. at PC Perspective. Known affected boards are 3 Asrock models - K8SLI, 939SLI and 939SLI32 - and Epox EP-9U1697 GLI. I am unsure how many other lesser known motherboards have implemented 1697 chips with SLI support.

SLI will still work using 81.98 drivers and driver supported scalable video cards. To my understanding, this does not include the 7600 and 7900 lines.

there you go

that took 20 seconds to google

Wow, that really is ass on NVIDIA'a part... They will let you buy two 7800GT's, but won't let you run them on a motherboard with chipset from a manufacturer they own. If you were trying to run CrossFire, I could see it, but this is ridiculous.

I thought that's what the fix/patch that I linked to earlier would fix and was for. Is there some jumper on the mobo you have to set? Some bios option in the bios?

No jumpers on mobo for any SLI. Tried numerous drivers. Both cards are working. The SLI bridge is new, just opened it from mobo box. i can see both cards, get readings, temps et..al from both cards but nothing SLI is showing in any config. Both cards are the exact same model and work great (idependenty) just cant get em to SLI. ASrock's web has no info. Seperate PSU's in use now, one for all HDs and dvd drives, one just for the vid cards so I know its not a psu issue. Probably just a POS mobo.

 

[ND40oz]

Originally posted by: wizboy11

I thought that's what the fix/patch that I linked to earlier would fix and was for. Is there some jumper on the mobo you have to set? Some bios option in the bios?

That fix was created from the ULI patch that was created before nVidia bought them out. As stated, you have to use the older ULI drivers that allowed SLI and you have to use a version of the forcware drivers before the 82s. Most were using the 81.98s Same thing happened back when the older 7x.xx drivers allowed you to run SLI on the DFI ultra boards without the SLI mod. nVidia "fixes" these issues with later driver releases.

 

[TheRyuu]

@Oyeve
Fixed Rig Link (for sig):
http://www.anandtech.com/mysystemrig.aspx?rigid=2721

Not really sure what your's is pointing to.

Edit: And to post above, I guess it's time for OP to try some older drivers.

 

[Arkane13131]

did you plug in the power supply to the motherboards SLI power reciever?

 

[Oyeve]

Got the stupid SLI working. After searching the web it appears Nvidia has not sanctioned the ULI chipset that my mobo has (even though nvidia supposedly owns ULI) so SLI will not work UNLESS you use the ULI Powerexpress SLI enabling software (which is on the mobos CD). All is good now, i'm just real pissed that nvidia disables SLI on the new ULI chipsets. Thanks for all your help guys, I really appreciate it!