I would advise against putting in air conditioning. Two that I ordered from AliExpress actually made the cooling problem much, much worse. The chips can be damaged or dependability reduced if a water block or similar component is installed. Case ventilation should be improved, and the graphics card should be kept away from the solid-state drive (SSD).
Kingston A400 240GB SATA SA400S37/240G solid state drive
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ADATA SU800 256GB SSD: High Speed Read & Write, 3D-NAND, SATA III, 560MB/s & 520MB/s
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Adata XPG SX8200 Pro 1TB NVMe SSD with 3D NAND, Gen3x4 PCIe M.2 2280, R/W 3500/3000MB/s (ASX8200PNP-1TT-C)
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Shock-Resistant Transcend StoreJet 25M3 USB 3.1 Slim Portable Hard Drive with 500GB Capacity
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18 TB External HDD Western Digital WD Elements Desktop, USB 3.0, black
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Game console Microsoft Xbox One X 1000 GB HDD, black
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π Seagate Backup Plus Slim STHN2000400 2TB Portable Hard Drive - Black: Your Reliable External Storage Solution
93 Review