CM Haf 932 ~$170
Asus P6t Deluxe~$280
I7 920 @ 3.2~$280
Thermalright Ultra 120 Extreme or TRUE 120~$70
6 Gigs Corsair Dominator 1600~ can't remember 140 or so
EVGA Gtx 295~$500
WD 1 tb~$130
LG 22x dvd~$25
Thermaltake Toughpower 1000W Modular 2 yrs ago was ~$400
Samsung 2493HM 24" monitor ~$400
Vista Home Premium 64 bit OEM ~$100
Cost was (when I built it 2 month ago) about 2000 us but I already had the PSU from a previous build
Don't know what the exchange rate is??? Also this was built about 2 months ago, so prices have come down!!
LOL at the $4500 computer. That's crazy. A $2500 (Canadian dollars) PC will give you 90% of the speed of a $4500 PC. OK, maybe if the $4500 needs to include monitor and speakers and printer and mouse and so on, then it may make sense.
The exchange rate is around 83 cents US/Canadian dollar, officially, but computer hardware costs a lot more in Canada than you'd get by converting Newegg USA prices with that exchange rate.
I like jack64's build. Maybe with a Corsair 1000HX PSU, but the Toughpower is good too.
Of course, with that budget I'd use three GTX 285 cards or two GTX 295 cards. In general three GTX 285 cards will beat two GTX 295, even if it's only 3 GPUs against 4, because they have higher clocks and the 4th GPU of the GTX 295 QuadSLI is not used very efficiently.
You could also add a Velociraptor or a SSD.
If you need speakers I'd recommend Logitech Z-5500.
What is interesting abou this question is you practically have no budget. $4500 to build a gaming rig (even in Canadian dollars) isn't a budget to me but more like winning the lotto! Right away, X58 Chipset ASUS Rampage II Extreme "in case" you upgrade later and go from GTX 295 SLI to 3-way SLI. The power to go with that Extreme Asus can only be matched with an iCore Extreme 956 and at least dual 30" monitors. Don't forget the LN2 cooling so you can smash the 3DVantage World Record!
I have the Logitech G-15 leyboard and the Logitech MX518 mouse, they are not top or the line but very good gamers. The Samsung 2493HM monitor I have is 5ms refresh, but it has never hindered me in any games. and the colors are AWESOME, but I hear there are faster and better monitors out there, listen to these gents on here and they will steer you right!