что вы думаете о таком сочетании компонентов компьютера?пожалуйста,очень нужна помощ!!

Apevia X-Telstar Junior 420W Case w/ Temp Display and Fan Control (G Type Black Color with Side-Window)
Extra Case Fan Upgrade: Extra 3-Color Neon Light LED Case Fan (1 x Fan)
POWER SUPPLY Upgrade: 680 Watts Power Supplies (Hush Power Supply SLI/CrossFire Ready)

CPU: (Quad-Core)Intel® Core™ 2 Quad Q9550 @ 2.83GHz 1333FSB 12MB L2 Cache 64-bit
COOLING FAN : CoolerMaster Hyper TX2 Gaming CPU Cooling Fan (Extreme Silent Operation at only 22dBA + Overclock Proof)

MOTHERBOARD: EVGA 750 SLI NVIDIA 750i SLI Chipset LGA775 Supports LGA775 FSB1333 DDR2/800 Mainboard w/GbLAN, USB2.0, & 7.1Audio
MEMORY: 4GB (2GBx2) PC6400 DDR2/800 Dual Channel Memory (Corsair or Major Brand)
VIDEO CARD: NVIDIA GeForce GTX280 1GB 16X PCI Express (($100 off Mail-in Rebate) EVGA Powered by NVIDIA)

MULTIPLE VIDEO CARD SETTINGS: Xtreme Performance in SLI/CrossFireX Gaming Mode Supports Single Monitor
HARD DRIVE: Single Hard Drive (500GB SATA-II 3.0Gb/s 16MB Cache 7200RPM HDD)
HARD DRIVE COOLING FAN : None
Optical Drive: (Special Price) LG 20X DVD±R/±RW + CD-R/RW DRIVE DUAL LAYER (BLACK COLOR)
SOUND: HIGH DEFINITION ON-BOARD 7.1 AUDIO
NETWORK: ONBOARD 10/100 NETWORK CARD
MODEM: NONE
MOUSE: XtremeGear Optical USB 3 Buttons Gaming Mouse
Wireless 802.11B/G Network Card: PCI Wireless 802.11g 54Mbps Network Interface Card
USB PORT: Built-in USB 2.0 Ports
OS: NONE - FORMAT HARD DRIVE ONLY