Build comparison, please help

[Twiztr]

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BUILD 1 - AMD Dual-Core
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CAS: ATX MEDIUM TOWER CASE
CPU: (939-pin) AMD Athlon™64 X2 4200+ Dual-Core CPU w/ HyperTransport Technology
FLASHMEDIA: INTERNAL 12in1 Flash Media Reader/Writer
FAN: AMD ATHLON64 CERTIFIED CPU FAN & HEATSINK + 3 EXTRA CASE FANS
HDD: Single Hard Drive (160GB SATA-II 3.0Gb/s 8MB Cache 7200RPM HDD)
MOTHERBOARD: (Sckt939)MSI K8N NEO4-F nForce4 Chipset SATA Raid PCI-E w/GbLAN,USB2.0,&7.1Audio
MEMORY: 1024 MB (512MBx2) PC3200 400MHz Dual Channel DDR MEMORY Value
OS: Microsoft Windows XP Media Center 2005 Edition w/ Free Upgrade to Windows Vista™ Home Premium
POWERSUPPLY: Apevia 600W DARK SIDE POWER ATX Power Supply
SERVICE: STANDARD WARRANTY: 3-YEAR LIMITED WARRANTY PLUS 24/7 LIFE-TIME TECHNICAL SUPPORT
SOUND: HIGH DEFINITION ON-BOARD 7.1 AUDIO
SPEAKERS: Logitech X-230 2.1 Configuration Speakers System
VIDEO: NVIDIA GeForce 7100 GS Graphics with TurboCache supporting 256MB 16X PCI Express VIDEO CARD
PRICE: $770

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BUILD 2 - Intel Dual-Core
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CAS: ATX MEDIUM TOWER CASE 350 WATT
CPU: (Sckt775)Intel® Pentium® D 945 Dual-Core CPU @ 3.4GHz 800FSB 2x2MB L2 Cache EM64T
FAN: INTEL LGA775 CERTIFIED CPU FAN & HEATSINK + 3 EXTRA CASE FANS
HDD: 80GB SATA-II 3.0Gb/s 8MB Cache 7200RPM HDD
MOTHERBOARD: ECS C19-A SLI nForce4 SLI Chipset LGA775 1066FSB DDR2/667 SATA Dual 16X PCI-E Slots w/7.1Audio,GbLAN,&USB2.0
MEMORY: 1GB (2x512MB) PC4200 DDR2 Dual Channel MemoryValue
OS: Microsoft® Windows® XP Media Center 2005 Edition w/ Free Upgrade to Windows Vista™ Home Premium
POWERSUPPLY: Apevia 600W DARK SIDE POWER ATX Power Supply
SPEAKERS: Logitech X-230 2.1 Configuration Speakers System
VIDEO: NVIDIA GeForce 7100 GS Graphics with TurboCache supporting 256MB 16X PCI Express VIDEO CARD
PRICE: $783

This is going to be a sytem my friend wants me to put together, so my budget was $750. And I didn't neglect the PSU this time either...

I'm not sure with which build to go with, any help?
(Its going to be for mainly gaming online)

 

[MurdaX]

Hey dude what are you exactly going to use your system to do that is the main question when you are going to build a system as to know exactly you are going to put into your system. Like asking questions such as am I going to use my system to play hardcore high graphic games, am I going to play low graphics game such as wow that don't require that much graphics or do I just want a system to do work.

 

[Ronnie]

for 750 bucks you could build alot better pc then what you have up there

 

[Twiztr]

Its going to run a lot of higher end graphics games like Battlefield 2, Counterstrike, HL2, etc.

Fade2Black: And suggestions on layouts for better computers... Those were the best I could find to put together for the price...