Hmmm. His budget is $6500 we are close to it, but still have some wiggle room. Bear in mind that built into that is a nice dual-monitor setup and good sound setup. Even if I shaved the RAM in half, he would only save $450.00 or so. Then again, money is realy not the issue here - performance is. For the sake of argument, say I shelved the C300 SSD, would performance be better with a Corsair P256 Corsair Force or OCZ Vertex 2?
Vertex or Agility 2 would be good. It is true that the Crucial's have better read, so you'll have to ask the client where he want's to prioritize performance.
The G.Skill is slightly cheaper no doubt, but the Kingston, at least in 3 x 4GB sets is on the approved memory list for this particular motherboard. The only ripJaw G.Skill that I could find approved were their 2x1GB sets. I am not saying it would not work, but for a client build, I hate taking chances...
lol, "approved memory"... That won't really matter. What will matter more is having less sticks for lower power consumption and the ability to put more ram in later. Get the 4GB sticks. They are also lower voltage.
I think all and all you can shave off quite a bit. If "Prosumer" means what I think it means he is a student who does an occasional job to make some money. Where I would put my money for this kind of build would be totally different.
1. 12GB DDR3 ($260)
2. 2 470s from Gigabyte (on sale til' the 30th on newegg) ($580)
3. OCZ 60GB for OS/ Apps ($150)
4. 3 1TB Samsung F3s (same as Black drives without premium cost) ($225)
5. 3 23" IPS monitors (~$900)
6. 1 23" TN Monitor (to test what everyday Joe would see) (~ $200)
6. i7 870 ($290)
7. nice SLI 1156 mobo ($200)
8. Corsair 650TX PSU
9. Antec 300
Total would be around $2200 for Tower + APPS
Total for Monitors + Keyboard + Mouse would be $1500
Total for Sorround Sound would be around $500? (Don't really know...)
All together would be around $4200
I'd then put $600 into a Wacom large Intuos4 Tablet (total at $4800)