- NVIDIA DGX-1
- NVIDIA GRID
- Quadro VCA
- NVIDIA DRIVE
- About NVIDIA
Dear Mad Mod Mike,I just bought a nice new system from Cyberpower systems with your GeForce 7800 GTX video cards. When I turn on SLI and start up a game (BF1942, BF2, Silent Hunter 3) I get a green vertical and horizontal line on my screen. The horizontal line tends to move up and down while the vertical one stays still.
Johnny! Don't tell me you pulled me away from playing with my new phase change cooling to ask me a question that is already in the FAQs! Tell me it isn't so!
Here is the FAQ:
What are the green lines that appear on my screen when in SLI Mode?Since you already pulled me away from tinkering with refrigerant & compressors, let me expand on this a little more for you. The 2 lines you're seeing are a visual feedback feature of SLI called "Show GPU load balancing." I really only find them useful to turn on when my friends come over to show them how cool my SLI Rig is. The lines show the SLI load balancing. Obviously you wouldn't want to game with these lines turned on!
If you see horizontal or vertical green lines on your screen (shown here), it means that you have "Show GPU load balancing" enabled in the NVIDIA Display control panel. When enabled, this option shows how your GPUs are sharing the graphics load. For games that are rendered using AFR (alternate frame rendering), the vertical line will grow up and down, depending on the amount of scaling. For games that are rendered using SFR (split-frame rendering), the horizontal line will move up and down, showing how the load is being balanced between each GPU. If the upper half and the lower half of the screen have a similar level of detail, the horizontal line will stay close to the middle.
So there you have it - nothing's wrong with your system or your driver - you just needed to do some homework. I don't want to rub it in, since you're not the ONLY one to ask …but this common question is already answered in our FAQ section. I love helping you guys out, but please, PLEASE be sure to check out the FAQ's before asking a question - I can only read and answer so many.
NVIDIA makes no warranties with respect to the information provided through the "Ask Mad Mod Mike" column and in no event shall NVIDIA be responsible for any damages arising out of your use of such information. Mad Mod Mike image © 2005 NVIDIA Corporation.