driving 3d game demo downloadWhat is the best desktop for me? (add links)?

Ok so im looking to buy/upgrade my 9yr old computer... getting really old as my inverter board i believe is dying,besides it only has a 20gb ide hard drive(which i would like to keep) and it has a 126mb ram very sad... for what im trying to do...

so here' my everyday use and what i do with my comp:
-PC Games, i like to try demos download etc... so needs decent graphics card, processor etc..
-use cad programs again with the graphics card and processor..
-rendering like blender and 3D game generators like ogre and what not for a physics simulation game called Rigs of Rods(RoR) which my recent computer is slow on... i currently have a Dell Dimension 4500 great computer but becoming outdated all i need is a tower/desktop no need for screen keyboard mouse etc....

i'd like it to be pretty decent price like between 3-400 would be nice i guess maybe 500 but i would prefer if it was an ide hd(oh and lots of space here i'd like 20gb goes out fast) the 7200rpm hd's look great if they are ide's that would be awesome but if there is someway to pair sata's with ide's then i could do that too...

if you guys have any suggestions hook me up with a link
thanks
just a recap
-games
-cad
-rendering
-space
-processing
-graphics

thanks

BTW im a PC man mac i'm not too keen on(no offense to mac users im just used to PC and windows XP)
For Barebone-Kits


For Core i7


Fore Core 2 Quad

HP desktops are probably the best within your price range and needs.
getting this comp and a diffrent graphics card and its a okay graphics card and its a quad so yea
1. Intel Processor Core i7 975 Boxdriving 3d game demo download 1pc
2. Mb Intel LGA Asus P6T WS PRO
3. Memory CORSAIR TR3X6G1866C9DF 6GB (3x2GB) DDR3 1866MHz, Dominator, Airflow Fan 2 pc
4. Harddisk 3.5Inch WDC 2 TB SATA II-32Mb Green Power 1pc
5. Power Supply Thermaltake W0155RE ToughPower ST 1000W 1pc
6. Casing COOLER MASTER HAF 932 1pc
7. DVD-RW Dual Layer LG 22x (box) IDE 1pc
8. VGA PCI-Express Asus EN GTX295 / 2DI / 1792Mb 896Bit DDR3 1pc
9. Keyboard Mouse Logitech KB Newtouch+Ms Optical Black NT100 1pc
10. LCD Monitors DELL 20 Inch S2009W 1pc


or

Quad 8200 (2.33 Ghz) 1333,C4Mb Box 1,695,000
Team PC6400 DDR2 800MHz 2GB 5-5-5-15 Elite (Heat Spreader) x 4 units
WDC 1 TB SATA-II 32Mb Green Power
Intel DQ45CB
Power Logic Modena GTX 2500 500W
LG 22x (box) IDE / Sata
Digital Alliance HD 4650 1Gb 128Bit DDR2
Logitech KB Newtouch+Ms Optical Black NT100
DELL 20 Inch S2009W
You don't want much do you?

There are two things that really tax a computer's resources. Gaming and 3d work. Auto-cad comes under 3d work.

If this is your work, you need to get the hottest thing out there to be at your best. I suspect it may not be or you'd already know that.

That aside, you need to decide how fast you want to be. You'll pay accordingly.

If this is all secondary, you might be happy with another Dell desktop with added hard drives. Fortunately for you and all of us computer people, these days we can get incredibly powerful computers for reasonable cost.

What we have on the average laptop used to take up three rooms in a university. Cool, eh?

Good luck. Have fun and whatever you decide, make sure you get your system disks, even if you have to send for them.
$US454 ($404 after rebates) Sidriving 3d game demo downloadngle card Phenom II Budget Build
CPU[99]: AMD Phenom II X2 550
MOBO[79]: GIGABYTE GA-MA770T-UD3P
VIDCARD[55]-20: ASUS 9600GSO
RAM[53]: Crucial 4GB DDR3 1333
PSU[49]: Rosewill 500w ATX2.01
CASE[80]-30: Raidmax Smilodon
HDD[39]: Western Digital Caviar RE 250GB

You can unlock 2 additional cores on the X2 550, effectively turning it into a X4 955 for no additional cost.

In order to do this you have to flash the BIOS to version F2c, then set the EC setting to Hybrid/Special and the ACC setting to Auto.
i personaly prefere linux. im running ubuntu 9.04 now. thare are a few good games available for free download some good first person shooters available in the repository. but most gamers like windows. because of direct x games like call of duty and doom3 things like that. linux uses open gl wich is like direct x. linux is a better operating system for sure. but it may not be for you. if you go to ubuntu.com you can download ubuntu. it will run as a live cd. just burn the iso to a disk pop it in restart and ure running linux. it never touches ure hard drive good way to see if you like it or not. if you do you can install it if not just eject the disk. and ubuntu is just the one i use. thares a bunch of linux distrobutuions out thare. all have live cd's available