I'm about to embark on my first build and I wanted to run this by you and get some answers to some questions I had. I appreciate it in advance.
Antec 900 Case
Power PC and Cooling 750 W PS (65 Amps on the 12v rail) ?
Rosewill 750W PS (80 Amps on 4 12v rails) ?
Asus P5Q Pro LGA 775 Mobo
C2D E8500 Wolfdale @ 3.16 Ghz (Would like to overclock @ 4 Ghz)
Artic Freezer 7 + Thermal Paste
OCZ Reaper Edition 4 GB 800 DDR2 4-4-4-15 [Cas 4] ? (Can I oc this to 850 mhz?)
OCZ Fatal1ty Edition 4 GB 1066 DDR2 7-7-7-20 ? (Or should I step up to this?)
HIS HD 4870 512 MB GDDR5 ? (Can the P5Q fit 2 of these if I crossfire down the road?)
HIS HD 4870 1 GB GDDR5 ? (Same here, not just size, what about Power consumption, 750W?)
Evga GTX 260 896 MB GDDR3 ?
WD 640GB 7,200 HD
2 x Lite On DVD-RW Drives
Vista 64bit Home Premium
You can know see what my questions are. What RAM to get if I'm going to be overclocking the cpu. Ideally, I would be able to oc the ram to 850, get my 1:1 425 FSB on the CPU x 9.5 multiplier = 4.03 Ghz
Or should I step up to the 1066 just to make sure.
Also, need major help on the GPU and power supply. Is that PS enough to power crossfire later on?
Antec 900, P5Q Pro, E8500, HD 4870 1GB, WD 640 GB, Vista 64-bit - all good choices.
Yes you can do Crossfire with P5Q Pro, 750W, and two HD 4870 1GB cards. You'd lose some speed compared to the same cards on a P5E Deluxe X48 or GA-X48-DS4, but the MB is $100 less. You decide. Here's an article to help you figure out if the difference is worth $100. http://www.legionhardware.com/document.php?id=761&p=8
Between PC Power & Cooling 750W and Rosewill 750W - both have 60A on the 12V circuit, don't know where you got 65 and 80. Both are $105 at newegg right now. Quality-wise, PC Power & Cooling is the best brand in the world and Rosewill is 5th quality.
The Freezer is a bad choice for a serious overclock. Get a Xigmatek HDT-S1283.
You can't Crossfire GTX 260 cards on the P5Q Pro.
If you really want two burners make them different. That is, keep one and change the other to SH-S223Q.