Phobya 64281 Variable 2 Slot SLI/Crossfire Fitting Matte Black

Variable SLI/Crossfire Connector

The Phobya 64281 is a G1/4 variable fitting that links two graphics-card water blocks in a multi-GPU array. Its adjustable length compensates for spacing differences between cards and blocks from various manufacturers. The piece supports both parallel and serial flow configurations. Builders expanding beyond dual-GPU setups can chain additional units for triple or quad arrangements.

Adjustable Length Under Load

The connector telescopes by approximately 12mm, absorbing thermal expansion and minor mounting offsets that appear once the loop pressurises and components warm up. This flexibility prevents rigid tubing stress on block ports during sustained gaming or compute sessions. Parallel or serial routing remains stable because the joint maintains alignment without binding. The design suits loops that see long, continuous duty cycles rather than brief bench runs.

Thermals Noise And Power

As a passive brass fitting with a matte black finish, it adds no active cooling, fan noise or electrical draw to the system. Thermal contribution is limited to the metal mass warming with the coolant, which is negligible in a correctly sized loop. No pump-speed changes or extra radiator area are required to accommodate this component. The matte coating resists fingerprints during installation and routine maintenance.