新手新機想玩硬喉

請教下各位ching睇下我有無諗漏諗錯野。

CPU:  Ryzen 7 5800X
MB : ASUS ️TUF GAMING B550-PLUS
Memory : 16GB x 2
GPU : ASUS TUF RTX 3070

Case : Cosair 4000D Airflow White

水冷基本上全Corsair,見其他人話佢OEM得嘅都唔太差
CPU Block : Hydro X Series XC7 RGB CPU Water Block (1200/AM4) — White
Pump + Res : Hydro X Series XD5 RGB Pump/Reservoir Combo — White
Rad : Top - Hydro X Series XR5 240mm Water Cooling Radiator — White
           Front - Hydro X Series XR5 360mm Water Cooling Radiator — White
GPU Block : TBD
Fitting :
Hydro X Series XF Hardline 14mm OD Fitting Four Pack — White (CPU x 2, Rad x 2 x 2, Pump + Res x 2)
Hydro X Series XF Hardline 90° 14mm OD Fitting Twin Pack — White (GPU x 2)
Hydro X Series XF Ball Valve — Chrome (Pump + Res x 1)

Other :
Hydro X Series XT Hardline 14mm Tubing  x 1
Hydro X Series XT Hardline Bending Toolkit (12mm & 14mm) x 1
Hydro X Series Filling Bottle x 1
Hydro X Series XL5 Performance Coolant 1L — Purple x 2

Flow :
Pump -> CPU -> 240mm Rad -> GPU -> 360 Res -> Res

想請教下喉通常用幾多mm?  OD 12mm? 14mm?
我預喉嘅走法係好2D噤諗,上曬野應該無噤簡單...
係咪應該買多少2-4個90度fitting慎防拗唔掂條喉?

請多多指教  
Screenshot 2020-10-04 145918-2.jpg