舊機升級求建議

old spec
cpu: i5 2400
底板:Asrock z77 pro 4
16gb ddr3 ram
zotac dual fan Gtx 1070
550w
500gb hdd + a data sp550 240gb
case corsair 230t
之前唔夠換全部,為左打機淨係買左顯卡同新機箱,依家想將舊換晒新,budget 5000
cpu想要7700,求建議

Intel 4 Cores 8 Threads Core i7-7700 Kaby Lake (3.6GHz,8M Cache,LGA 1151,14nm) CPU BOX 盒裝 $2400
GIGABYTE 技嘉 GA-Z270-HD3 Z270,DDR4,LGA 1151,Intel GbE Lan,USB3.1 Type A ATX M/B $1090
Kingston DDR4 2400MHz 8GB (1x8GB) Ram KVR24N17S8/8X2 $840

TOTAL: $4330

550W 是咩火牛?

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cooler master g550m

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Total         HK$ 4165
Intel 4 Cores 8 Threads Core i7-7700 Kaby Lake (3.6GHz,8M Cache,LGA 1151,14nm) CPU BOX 盒裝        HK$ 2395
ASUS 華碩 PRIME B250M-PLUS B250,DDR4,LGA 1151,Intel GbE Lan,USB3.1 Type C M.ATX M/B        HK$ 830
Kingston HyperX Fury HX424C15FB2K2/16 DDR4 2400MHz 16GB Kit (2x8GB) 連黑色散熱片        HK$ 940

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