声卡一般是集成的

如果阁下是发烧友，要求玩3D游戏，那就得花银子到显卡。

看样子阁下想买高性能的，

换主板吧, 这块是我当初给core 2 duo E6600选的。Intel BLKDG965WHMKR LGA 775 Intel G965 Express ATX Intel Motherboard - OEM,集成声卡，显卡，网卡, $119.99
http://www.newegg.com/Product/Product.aspx?Item=N82E16813121053

内存: 1GBx2 DDR2-800, CORSAIR XMS2 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory - Retail, $169 before $$40 rebate
http://www.newegg.com/Product/Product.aspx?Item=N82E16820145590

DVD-RW很便宜的，
NEC Black 18X DVD+R 8X DVD+RW 8X DVD+R DL 18X DVD-R 6X DVD-RW 12X DVD-RAM 16X DVD-ROM 48X CD-R 32X CD-RW 48X CD-ROM 2MB Cache SATA 18X DVD±R DVD Burner with 12X DVD-RAM Write - OEM , #$31.99
http://www.newegg.com/Product/Product.aspx?Item=N82E16827152079