hmmmm ... 280's and SLI?

M

mrcamper

n00b
Joined
Feb 21, 2005
Messages
47
I have 2 BFG 280 gtx oc's and i'm trying to setup SLI.

I have installed the latest 177.41 drivers, but the button to enable SLI in the Nvidia driver control panel IS NOT THERE. I have a shiney new Intel Skulltrail MB with three slots....so.... ??

I had 8800 gtx setup in SLI on the board and they worked; so I expect it to be the same type of setup so I know how to do this; IT JUST ISN'T AVAILABLE !!!!

what the? /...am i missing something?
 
Maybe try putting the SLI connector bridge the other way around?
Are both GTX's fans spinning up?
 
Check your slot setup, for 3 slot mobo, it's usually one closes to the CPU and one furthest from it. Leave the middle one blank.
 
yep....they're in slot 1 and 3, tried cables both ways....

the nvidia control panel sees both cards, there just isn't an "Enable SLI" check box.....

If this turns out to be an Nvidia/Intel board issue on my "Nvidia SLI Certified" Skulltrail motherboard... I am AT WAR with Nvidia ...... and will return to the AMD ATI world.

Also, we have Called BFG 24/7 tech support and they were clueless....

Turns out, on the Nvidia SLI website forums there are numerous posts on this issue so it isn't 'just me' .....but, AS USUAL, Nvidia hasn't made a single post on this as of last night in response to the posts in SLI forums....

peh!
 
Below is the info that the Nvidia Control Panel is returning, it is incorrectly reporting the information on the second card as being on IRQ 0 with 2816 MB memory. In Windows Device Manager both cards are actually sharing IRQ 16.

Running GPU-Z shows both cards info as being IDENTICAL on the main screen, however there is one odd thing, GPU-Z shows the cards both underclocked (power save mode basically) with one card being at GPU 300.0 MHz, Memory 100.0 MHZ and the second card at GPU 400.0 MHz, Memory 300.0 MHz

-----------------------------------

NVIDIA System Information report created on: 06/27/2008 10:29:59
System name: CAPTAINHERO

[Display]
Processor: Intel® Xeon® CPU 5160 @ 3.00GHz (2993 MHz)
Operating System: Windows Vista ™ Ultimate, 64-bit (Service Pack 1)
DirectX version: 10.0

GPU processor: GeForce GTX 280
ForceWare version: 177.41
Total available graphics memory: 2816 MB
Dedicated video memory: 1024 MB
System video memory: 0 MB
Shared system memory: 1792 MB
Video BIOS version: 62.00.0e.00.0f
IRQ: 16

Bus: PCI Express x16

GPU processor: GeForce GTX 280
ForceWare version: 177.41
Memory: 2816 MB
Video BIOS version: 62.00.0e.00.0f
IRQ: 0
Bus: PCI Express x16

[Components]

nvCpl.cpl 2.2.220.05 NVIDIA Control Panel Applet
nvCplUI.exe 2.2.220.05 NVIDIA Control Panel
nvViTvS.dll 7.15.11.7741 NVIDIA Video and TV Server
NVMCTRAY.DLL 7.15.11.7741 NVIDIA Media Center Library
nvDispS.dll 7.15.11.7741 NVIDIA Display Server
NVCPL.DLL 7.15.11.7741 NVIDIA Compatible Windows Vista Display driver, Version 177.41
nvGameS.dll 7.15.11.7741 NVIDIA 3D Settings Server
 
As you noted, this is a known issue on Skulltrail. There are some calling "shenanigans" on nvidia for doing this intentionally as a way of screwing Intel. But most are assuming it's just a driver issue or oversight.
 
well i certainly have no love for Nvidia lately, but i can't imagine them doing this on purpose....but they certainly aren't hurrying to fix it either.
 
You must log in or register to reply here.
Back
Top