the choice of graphics card

would like a little help
I have a Mat.the MSI K9N Neo v2/v3 (MS-7369)
is now the graphics card is Asus Radeon HD 6670 1024MB GDDR3 , but I would like to put a graphics card with 2048MB , but I'm afraid I'll buy and she will not podoidet
For example like the Gigabyte PCI-Ex GeForce GTX 750Ti WindForce 2X 2048MB GDDR5 , come to my Board do ?