Can I use two cards at the same time on the same computer?

Hello

I have two graphics cards, one is integrated, i.e. HD 2500, Intel and the other is dedicated, i.e. Nvidia Geforce GT620. My question is that can I use both at the same time on the same PC. Whenever I try to connect via a VGA cable (per processor) and DVI (via graphic card) at the same time, the screen goes black and when I take off the DVI cable, the screen will return. When I connect the DVI again after log on, there is just the theme of Windows and folders that I opened all get reduced. When I disconnect the DVI cable once again, I opened the folder displays again.
 
I want to make use of both integrated and dedicated graphics card, I read on the internet that two graphics cards give a performance gain. Also, I'm a gamer. But in time, I bought my PC, I had no knowledge about computers. I want to use two graphics cards. Please tell me a way by which I can use two graphics cards at the same time without the problem described above.

Yes, you can use two cards graphics, combined to boost performance. But it depends on a condition: the two (or more) cards must be of the same brand. To make it clearer, you can use two or more NVIDIA graphics (thanks to SLI technology) or AMD graphics (with CrossFireX technology, supports up to four graphics card in a single PC).

But, a mixture of graphics cards of different brand, as NVIDIA and AMD or NVIDIA and Intel or AMD and Intel or NVIDIA, AMD and Intel, can not be used for SLI or CrossFireX.
On the black screen, please follow the following link:
http://support.Microsoft.com/kb/976064

Tags: Windows

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