Help a noob choose parts?

This is my first gaming rig, and my budget was around $700. These are the parts I have chosen so far:



CPU - AMD Phenom II X3 720 2.8GHz 3 x 512KB L2 Cache 6MB L3 Cache Socket AM3 95W Triple-Core Black Processor

http://www.newegg.com/Product/Product.aspx?Item=N82E16819103649%26Tpk=AMD%20Phenom%20II%20X3%20720%202.8GHz%203%20x%20512KB%20L2%20Cache%206MB



MOTHERBOARD - GIGABYTE GA-MA770T-UD3P AM3 AMD 770 ATX AMD Motherboard

http://www.newegg.com/Product/Product.aspx?Item=N82E16813128392%26Tpk=GIGABYTE%20GA-MA770T-UD3P%20AM3%20AMD%20770%20ATX%20AMD



RAM - G.SKILL 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10600) Dual Channel Kit Desktop Memory Model F3-10600CL8D-4GBHK

http://www.newegg.com/Product/Product.aspx?Item=N82E16820231180%26cm_re=G.SKILL_4GB_%282_x_2GB%29_240-Pin_DDR3_SDRAM_DDR3_1333-_-20-231-180-_-Product



VIDEOCARD - XFX HD-487A-ZHFC Radeon HD 4870 1GB 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready CrossFire Supported Video Card

http://www.newegg.com/Product/Product.aspx?Item=N82E16814150394%26Tpk=XFX%20HD-487A-ZHFC%20Radeon%20HD%204870%201GB%20256-bit%20GDDR5



HARD DRIVE - Western Digital Caviar Black WD5001AALS 500GB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5'' Internal Hard Drive

http://www.newegg.com/Product/Product.aspx?Item=N82E16822136320%26Tpk=Western%20Digital%20Caviar%20Black%20WD5001AALS%20500GB%207200



I haven't chosen a PSU, case, or optical drive yet, so it would be great if anyone can recommend any. :)



Also, any tips/changes to the parts I have chosen to far would be appreciated!Help a noob choose parts?
Just get a brand name PSU and optical drive and you won't have any worries.A 600watt should last you a while and be fine for upgrading in the future.Help a noob choose parts?
PSU - 650/700w with 80PLUS efficiency tag (try to get the type with 'realpower') Coolermaster/Acbel

Optical drive - samsung/sony/LG supermulti RW should be 8x/4x/4x I don't remember exactly



Since you're hunting down 4gigs of ram I suppose you're gonna use vista/win7? if you're going XP you can only max out at 3gigs
[QUOTE=''ACEHERO'']PSU - 650/700w with 80PLUS efficiency tag (try to get the type with 'realpower') Coolermaster/Acbel Optical drive - samsung/sony/LG supermulti RW should be 8x/4x/4x I don't remember exactly Since you're hunting down 4gigs of ram I suppose you're gonna use vista/win7? if you're going XP you can only max out at 3gigs[/QUOTE]Actually you are wrong or misinformed, XP can use more than 3GB, its XP 64bit, it wasn't as hyped, because people could hardly use or want more than 3GB. Vista was when people looked at the 64bit vista, just because ram was cheap then.And 700watts for that system is overkill, unless he/she plans on getting a 2nd 4870 for crossfire.
Proccessor - AMD Phenom II X3 720 - $119
Motherboard - GIGABYTE GA-MA770T-UD3P AM3 AMD 770 ATX - $70
RAM memory - mushkin HP 4GB DDR3 1333 Dual Channel - $90
Video Card - SAPPHIRE 100269HDMI Radeon HD 4890 - $195
Hard Drive - Seagate 1TB 7200.12 - $85
Optical Drive - Sony Optiarc DVD Burner with LightScribe - $34
Subtotal - $593 w/o PSU, Case, or OS

Power Supply:
Corsair TX Series: 650W-$90, 750W-$100, or 850W-$120. All well priced...OR:
OCZ SXS Series: 400W-$25, 500W-$50, 600W-$60, 700W-$60. Even more well priced, but less popular...OR:
OCZ Fatal1ty Series: 400W-$40, 550W-$55, 700W-$95. Better OCZ Technology.
[This message was deleted at the request of the original poster]
[This message was deleted at the request of the original poster]
[This message was deleted at the request of the original poster]
[This message was deleted at the request of the original poster]
What's your budget? If its big enough you can upgrade the CPU as well as get a good PSU and Case.
Also, do you need an OS?
@smc91352



My budget's around $700,



and thanks for your help! :)
Proccessor - AMD Phenom II X3 720 - $119
Motherboard - GIGABYTE GA-MA770T-UD3P AM3 AMD 770 ATX - $70
RAM memory - mushkin HP 4GB DDR3 1333 Dual Channel - $90
Video Card - SAPPHIRE 100269HDMI Radeon HD 4890 - $195
Hard Drive - Seagate 1TB 7200.12 - $85
Optical Drive - Sony Optiarc DVD Burner with LightScribe - $34
Power Supply - OCZ Fatal1ty OCZ700FTY 700W - $95
Case - COOLER MASTER Elite RC-310-BWN1-GP - $40
Operating System - Windows 7 Release Candidate 1 x64 64-Bit - OEM - $10
Subtotal - $738