I made a build about 2 years ago and purposely didn't completely max it out because of budget. I'd like to upgrade it a bit more now. I plan on buying a second video card to crossfire them and add 8Gb more RAM. These are my Video Card and RAM.
ASUS EAH6850 DC/2DIS/1GD5/V2 Radeon HD 6850 1GB 256-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card with Eyefinity
1 x G.SKILL Ripjaws X Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9D-
Is it better to buy the exact same video card (I'd have to get it off Ebay.) or will a new card crossfire with the old one just fine? Or is it better to just take out the old one and put in a new one?
In terms of RAM does it matter if I put in a different a different brand. As in, will the computer run better if all the RAM sticks are all the exact same? Or should I just put in whatever I can get? I had an old computer that I just had all different RAM sticks because I kept getting my friend's old RAM sticks that they didn't need any more and I kept switching them out to make it run faster. It seemed like it made it worse since every time there was a problem with the computer it was the RAM sticks malfunctioning. Not sure if constantly switching them out was what messed them up though.