An EK water block for Nvidia GeForce RTX 3080 and 3090EK-Quantum Vector RTX 3080/3090 water block is compatible with most reference design (not Founders Edition) GeForce RTX 3080 and 3090 graphics cards. It is purpose-designed with a much thicker copper base to clear the tall capacitors on most reference design graphics cards. This gives the water block the advantage of having a wider compatibility list, without sacrificing any coolant flow restriction. The Vector water block directly cools the GPU, VRAM, and the VRM (voltage regulation module) as a cooling liquid is channeled right over these critical areas. The water block is in contact with MOSFETs and chokes to maximize cooling and minimize the chances of coil whine. These newly developed water blocks feature optimized flow paths that reduce hydrodynamic instabilities and vortexing (dead spots) inside of them. Additionally, this new design allows the terminal to be screwed directly onto the copper cold plate of the GPU block, making it more rigid and reducing the chances of damaging the water block. The EK-Quantum Vector Series water blocks use an Open Split-Flow cooling engine design, which proved to be a superior solution for GPU water blocks. It is characterized by low hydraulic flow restriction, meaning it can be used with weaker water pumps or pumps running on low-speed settings, and still achieve top performance. The jet plate and fin structure geometry have been optimized to provide even flow distribution with minimal losses and optimal performance when used in any given coolant flow orientation. Fin array is populated by 27 microfins with 0.5mm wide microchannels that provide optimal cooling performance, without unnecessary flow restrictions or clogging hazards. The base of the block is CNC-machined out of high-grade electrolytic copper, while its top is CNC-machined out of durable black POM acetal. These 2nd generation Vector GPU water blocks also feature acetal terminals that match the top cover. The watertight sealing is ensured by high-quality EPDM O-rings, while brass standoffs are already pre-installed and allow for a safe and easy installation procedure.Backplate for the 3080/3090 water blockEK recommends the purchase of a retention backplate, which improves the overall aesthetics of your graphics cards, and also provides additional passive cooling for the GPU core, VRAM on the 3090 cards, and backside of the printed circuit board VRM section.Enclosed:- EK-Quantum Vector RTX 3080/3090 series high-performance water block- Mounting mechanism with screw-in brass standoffs- Necessary mounting screws, nuts, and washers- 2x Nickel plated brass plug G1/4- EK-Loop Multi Allen Key (6mm, 8mm, 9mm)- Thermal pads- Thermal grease EK-TIM Ectotherm (1g)Technical Specification:- Dimensions: (LxHxW) - 220x124x20.5mmCompatibility:- EMTEK EMTEK GeForce RTX 3080 10GB Black Edition OC - Gainward GeForce RTX 3080 Phoenix - Gainward GeForce RTX 3080 Phoenix GS - Gainward GeForce RTX 3090 Phoenix - Gainward GeForce RTX 3090 Phoenix GS - GALAX GeForce RTX 3080 EX Gamer (1-Click OC) (38NWM3MD1JAA) - GALAX GeForce RTX 3080 SG (1-Click OC) (38NWM3MD99NN) - GALAX GeForce RTX 3090 EX Gamer (1-Click OC) (39NXM5MD1JNA) - GALAX GeForce RTX 3090 SG (1-Click OC) (39NSM5MD1GNA) - KFA2 GeForce RTX 3080 EX Gamer (1-Click OC) (38NWM3MD1JAK) - KFA2 GeForce RTX 3080 SG (1-Click OC) (38NWM3MD99NK) - KFA2 GeForce RTX 3080 SG 10GB (38NWM3MD99NK) - KFA2 GeForce RTX 3090 EX Gamer (1-Click OC) (39NXM5MD1JNK) - KFA2 GeForce RTX 3090 SG (1-Click OC) (39NSM5MD1GNK) - KUROUTOSHIKOU GeForce RTX 3090 24GB GALAKURO (GG-RTX3090-E24GB/TP) - Palit GeForce RTX 3080 GamingPro (NED3080019IA-132AA) - Palit GeForce RTX 3080 GamingPro OC (NED3080S19IA-132AA) - Palit GeForce RTX 3090 GamingPro (NED3090019SB-132BA) - Palit GeForce RTX 3090 GamingPro OC (NED3090S19SB-132BA) - PNY GeForce RTX 3080 10GB XLR8 Gaming EPIC-X RGB Triple Fan Edition (VCG308010TFXPPB) - PNY GeForce RTX 3090 24GB XLR8 Gaming EPIC-X RGB Triple Fan Edition (VCG309024TFXPPB)- PNY GeForce RTX 3090 OC XLR8 Gaming Epic-X RGB Triple Fan Edition, 24GB GDDR6X, HDMI, 3x DP (VCG309024TFXMPB)