I will be keeping my:
Corsair h50 cooler and my hdd
1. Should I wait for 930? I will be ocing to 4.0-4.2 nothing more than that. Can i7 920 d0 easily reach that oc?
2. Should I upgrade to 5850? I really want the fermi but it's still not released, should i upgrade to 5850 then sell it to get the fermi once it comes out?
3. Should I just stick with the ud5 rather than the ud7? *both have usb 3.0 and everything (see link of mobo). Is there much of a difference other than the passive heatsink on the ud7? does it do anything? or I can manage without it? also, is there a big difference between a 12 phase and a 24 phase? ud5 vs ud7.
1.) Waiting depends. You will reach those clock speed with the 920, but (presumably) the 920 will be cheaper once the 930 is out.
2.) I would either wait for Fermi to build, or stick with the 5850. You're just going to sink a lot more money into the build by jumping ship. If you want Fermi that badly, wait for it. Or buy a really crappy card to use until it comes out. Keep in mind that Fermi may not be better than the current 5xxx cards, and could be more expensive.
3.) The heatsink doesn't really do anything. You can do without it, especially for $50. There isn't anything special about the 24 phase. From what I'm reading, 12 isn't even needed. It's just a marketing ploy (and judging from every new build thread you've started, one that's working).
You can save $20 by going with the 650TX, which also also run xfire 5850's. The 750TX is just xfire ready w/o having to buy molex to 6 pin converter cables, and if you have the budget and plan on xfire in the future is worth getting.
If you really insist on going 1366 then at least drop the PSU to something reasonable like the 65TX or 750 TX.
BTW your current build lacks a case, and is $1204.
Also your Corsair H-50, depending on when you purchased it, may or may not have brackets for LGA 1156 or 1366.
Most i5-750 and i7-920 can reach 4ghz. The OC potential of any CPU varies greatly from chip to chip. Some i7-920 can OC to 3.6 ghz w/o a voltage increase, some can't get to 3ghz w/o a voltage increase.
Read this article to see why cheap liquid cooling like your H50 is actually worse than using a good HSF.
1200 is stretching it, but definitely pretty close to being possible. With the i7 930 coming out (with everything showing no updates but an extra x1 on the multiplier taking it from x20 to x21 or 2.66ghz to 2.79 or what they'll call 2.8ghz) the i7 920 will probably be had for cheaper at some point soon. The i7 930 appears to be coming out feb 28th, but actual in stock may be a week or two +/-. That's just too long for me to wait with everything else ready and currently using a single core cpu with a busted 6800 Ultra that can't do anything but run windows.
Here's mine (buying the 920 tonight)
X58 Platinum SLI - 169.99
I7-920 D0 slbej - 265
Seventeam 850w modular psu -109.99
6gb cl7 Supertalent 1600mhz- 114.99
Prolimatech Megahalems -65
Arctic mx-3 12.99
2xScythe Ultra Kaze 19.98
2xCoolermaster (R4) 17.98
IN WIN Maelstrom Case 109.99
HIS ATI 5850 314.99
Total before shipping (and in some cases already included)
+109.99 Win 7
Recycled hd's and dvd burner, and cd burner, and 22" NEC CRT 1440p from old computer.
However if I wanted a hd I'd wait until I saw a deal like recently 1 tb 79.99, or if SSD I'd look around 100-150 range with TRIM (or like it) support. 32gb now or 64gb probably sometime this year for around that price.
So that setup with a new hd and new ssd hd would run about 230-250 combined. Or again if you just need 1 hd, find one for around 79.99
That will take you to $1540-1560 before shipping, assuming you aren't paying sales tax. (or $1391 without the ssd hd )
Of course of those things listed, I got free shipping on about half, including the case.
Also you have to get those prices for those products, but if you spend some time every day looking for deals, and catch things with free shipping, you can get a i7 system for right around 1200-1300 dollar mark.
If it's too much work, then it's too much. It wasn't for me. I did buy these over a 8 week timeframe or thereabouts. (except for the i7 which is my 2nd one since the used one off ebay didn't work...although there was the disclosure from the seller that it might not...and was only 75 bucks...so no biggie but everything else was bought between mid-oct to mid-december)
But again I got an i7 system, and will be using the old hd's and 2 burners, and monitor. But my total upgrade cost was roughly $1300 to get into a i7 system. Approx 1375 including the bricked i7 920 I also purchased.
Unless the economy goes screwy, which it very well might, it is very possible to do the same. I wouldn't doubt even a bit cheaper giving good timing, and newer parts pushing down prices.