Re: Building a new PC - STRICT BUDGET
OK...? I hope everything is cleared up.
Use the ATX case you have along with the 500W PSU.
The Dell case is a mATX case, as is most cases used for prebuilts. They will only hold a microATX board. In this case, since it will be used for office type stuff, an ATX board is not a necessity and a mATX will do just fine. Dell used to use all proprietary parts, so using the Dell case could cause problems if it's layout is proprietary.
My Rig: SABLE
Antec 300 Illusion / Antec EarthWatts EA650 650W / EVGA GTX 760 2GB
AMD FX 8320 x8 Black Edition / Gelid Tranquillo / MSI 970A-G43
Sandisk Ultra Plus 128GB / Samsung 840 120GB / WD Black 750GB / WD Green 1TB / WD Red 3TB
G.SKILL Ripjaws 2x2GB DDR3 1600 - Crucial Ballistix Tracer 2x2GB DDR3 1600
Win7 Ult 64-bit - Func MS3 Mouse - CM Storm QuickFire Rapid Mech Keyboard
R.I.P. Danny L. Trotter
... 14 Nov 1945 - 4 Sept 2009