咁樣砌有冇問題？會唔會唔夾？

AMD AM2 X2 DUAL CORE ADO3800-CU CPU 低電壓 HK$ 1,055.00
ASUS M2N-E/AM2 nForce 570 Ultra M/B HK$ 730.00
A-DATA DDR-2 667MHZ 512MB Ram x2 HK$ 520.00
Galaxy影馳 GF 7600GS PCI-E 256MB DDR2 HK$ 730.00
Seagate 250.0GB ST3250820AS SATA II/NCQ HDD HK$ 568.00
LG GSA-H42N 18X Super Multi DVD Writer Bulk HK$ 245.00
Seventeam 420W ST-420BKP Power Supply HK$ 370.00
Case HK$ 300.00

有冇其他建議？budget$4500左右