First System Build $900 dollar budget

This is my first time building a computer though ive done upgrades and replacements for a while, I was hoping to wait till boxing week but with school coming up im going to be needing a desktop no matter what.

The computer will be for gaming and school

These are the parts I am looking at thus far

Phenom ii x4 955
Samsung spinpoint 103sj 1tb
Corsair tx650 watts
patriot sector 5 ddr3 1600 cas 8
gigabyte 890gpa ud3h
msi gtx 460 cyclone OC
antec 300
Cheaper DVD writer doesnt matter what

By no means is any of this final and if you have any suggestions for parts or pricing or anything at all post them. Im looking to see if i can get anything cheaper

I want to stick to future proofing though with usb 3 and sata 6

I have my own monitor, keyboard, mouse and os

I will primarily use this for multithreaded applications for school like CS4 and autocad 2010

Hmm why not hit a 880G/IGP and could be if u have to fork out for a discrete, a professional class GPU would net u the biggest gains

If you want to go with GTX 460, then drop the Crossfire supporting board and also the 650W...
Or you could go with Intel i5 build, with a mobo supporting SLI...

Here is an Intel build
i5 760
http://www.newegg.com/Product/Prod [...] 6819115067

ASUS PRO-E + ASUS DVD
http://www.newegg.com/Product/Comb [...] mbo.449507

Corsair 4GB DDR3 + NZXT M59
http://www.newegg.com/Product/Comb [...] mbo.432119

Antec EX 650W
http://www.newegg.com/Product/Prod [...] 6817371015

Video card
http://www.newegg.com/Product/Prod [...] 6814127510

HDD
http://www.newegg.com/Product/Prod [...] 6822152185

Total - ~$900 not including rebates or shipping if any...
This has SLI support and 650W would suffice for GTX 460 SLI...

Hmm both are actually very good builds, honestly i dont know the big different between the 890 and the 870
Would it be better to go with AMD or Intel?

I dont have a problem with the CF board because i doubt ill ever CF or SLI maybe way down the road but iunno.

The one thing i forgot to add was that I live in Canada so my prices and deals on newegg are slightly higher

mm i like that AMD build there,

What do you guys think about the battle between nvidia and Ati

I was looking at the 5770 but the gtx 460 is far more powerful im not looking to play like crazy games but i seem to prefer atleast for the moment nvidia, so would it be worth it to go intel on the LGA 1156 so i can get nvidia SLI for way down the road if i decide to get another card or is it ok to stick with AMD?

ok ill stick to the nvidia then, just out of curiosity what do you see the life span of this computer being for being, games wise and tech wise. I will most likely not be upgrading until i am finished university so thats easily 5 years down the road.

again i wont be playing those epic games in full settings or anything like that, I just want it to be able to handle things coming down the pipe line at like med settings and I need it to be able to do autocad

And just a question whats the diference between the 870 and the 880 from AMD

k well thanks for all your help man, the only question i have left really is just about the frequency on the ram, will 1333 suffice or should i go for 1600?

What if i was to over clock the 955 to 3.8?