求教Upgrade 問題

這是三年前的list, 如果想upgrade至能玩最高效"巫師3", "Watch Dogs", "GTA 5", 加推4K mon,
可以更換哪些部份??? 預算5~6千.
還是換全新更好??
1.        Intel Core i7-2600 (3.4G, 8M Cache, LGA 1155) CPU
2.        MSI H67MA-E45 (B3) H67, USB 3.0, SATA M.ATX M/B
3.        Kingston DDR-3 1333MHz 4G Ram KVR1333D3N9/4G X 2
4.        WD Cavia        r Black 1002FAEX 1 TB SATA3/64MB HDD x 2
5.        LG GH-24NS70 24X DVD Writer/SATA
6.        MSI微星 DI-N580TC GTX580 Twin Frozr II/OC w/ DUAL DVI+Mini HDMI 1536MB GDDR5
7.        Cooler Master RC-371-KKN1 Elite 371 Case
8.        Cemac 12CM Sleeve Bearing Cooling Fan
9.        ANTEC HCG620 High Current Gamer 620W 80Plus Bronze火牛

謝謝幫忙!!

Zotac        ZOTAC, NV, GTX980 AMP! Extreme Edition[ZT-90203-10P], 4GB GDDR5        $4,899
<SSD>Crucial MX100 256GB CT256MX100SSD1 2.5" SATA 3 6Gb/s (Solid State Drive, SSD) 固態硬碟 7mm        HK$ 840
$5,739

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淨係換過張display 就已經夠??

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GIGABYTE技嘉 GV-N980G1 GAMING-4GD GTX980 4GB GDDR5 顯示卡 $4900
Plextor 256GB PX-256M6S M6S Series 2.5" SATA3 6Gb/s (Solid State Drive, SSD) 固態硬碟 $1030

換張 DISPLAY 和加 SSD 已 OK

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