2 Different Graphic cards in motherboard

[Ralph DeFilio]

I have 2 different graphics in my PCI slots. I did not have a place to put the second one when i upgraded my card so i put it into the PCI slot on the bottom. I thought the second wouldn't work but it does apparently. My computer and a website has told me i have 4 GB of ram however neither graphic card has 4 GB. Features: Optimal attributes of your Video Card You Have Icon Dedicated Video RAM 4.1 GB. Do the two stack up or is it wrong? Cause a computer use both?
one is a HD 5450 and the other is a Radeon R9 270X

 

[prettyflvcko]

It is useless to have these two GPU's in your pc. If you had a GTX 770 for example from NVidia and a GTX 660 also from NVidia, you could've use one card for the PhysX and you would've got slightly better FPS. Having two AMD GPU's from different generation won't change anything...