If the board still works, I wouldn't replace it. If it doesn't, check with dell for warranty. Dells aren't that easy to upgrade. If you were to get a non dell board, mini-itx would be your best bet and use only the front 4 mounting holes. Otherwise, ditch the dell case and get a cheap micro atx case and ps so you can use a cheap micro-atx board. You'll need a new windows coa if you use a non dell board with your hardrive. Good luck.
The board works fine, I just wanted to see what my options were because this board lacks PCIe 3.0 support (Want it for the extra wattage, my 7750 gobbles it when overclocked) and only has 2 sata ports. Also, I wanted to move away from B75 so in case I end up with a K series processor in the future, I can overclock.
Looks like I'll be looking into mini-itx boards, thanks!