This water block directly cools the GPU, RAM as well as VRM (voltage regulation module) as water flows directly over these critical areas thus allowing the graphics card and it’s VRM to remain stable under high overclocks. EK-FC R9 390X TF5 water block features a central inlet split-flow cooling engine design for best possible cooling performance, which also works flawlessly with reversed water flow without adversely affecting the cooling performance. Moreover, such design offers great hydraulic perfromance allowing this product to be used in liquid cooling systems using weaker water pumps. Base is made of nickel-plated electrolytic copper while the top is made of quality acrylic glass. The sealing is ensured by quality rubber washers. Screw-in brass standoffs are pre-installed and allow for safe, painless installation procedure. Block is mounted with enclosed M2.5×4 DIN7985 screws and washers and allows for re-use of the factory provided MSI backplate. EKWB recommends the purchase of aesthetic retention backplate (EK-FC R9 390X TF5 Backplate – Black) which improves the looks of your graphics cards and also provide some passive cooling to the VRM section. G1/4″ threaded fittings can be used on both sides of the FC terminal. Up to four EK-FC R9-390X TF5 water blocks can be used on a single ATX form factor motherboard by using EK-FC Terminal (DUAL, TRIPLE or QUAD type) system or other means of interconnectivity. Please note that EK-FC Bridge & Link system is not compatible with this water block. Enclosed: – EK-FC R9-390X TF5 water block – mounting mechanism with screw-in brass standoffs – thermal pads – thermal grease EK-TIM Ectotherm (1g) Made in Slovenia – Europe!