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Will using my Mobo's built in GPU in addition bottleneck my system

post #1 of 4
Thread Starter 
I have a mobo with built in video support via VGA and dvi ports. I use those two for my 3rd and 4th monitors. Will that in anyway bottle neck my newer PCI express card that has a much stronger GPU (geforce 450)
post #2 of 4
the only affect this will have is that it may steal a minor bit of your system RAM so that the GPU has memory. Otherwise its all good
    
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post #3 of 4
It depends on how much RAM your system has and how much your onboard vid allocates. If you only have 1GB and it's using 256, you'll take a hit for sure.
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post #4 of 4
Thread Starter 
Thanks. I have 8GB of DDR2 RAM I have to check the bios to see how much I have dedicated to the onboard GPU. On NVIDIA control panel it says the nForce 730a (Mobo) has 256 MB DDR2 dedicated video memory and 64 MB System Video Memory (should I/can I change this in Bios or elsewhere?) on the GeForce GTS 450 it says Dedicated video memory 1024 MB GDDR5 and 0 MB System Video Memory.

Another thing the first supports DirectX 10 the second 11. Is that a problem? This is also according to NVIDIA control panel.

Lastly does the monitor or projector plugged into the better video card get better results then that into the Mobo or do they share the power of both because of SLI I can't tell a difference so far.

ThAnks
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