Thermalright XWB-1 CPU Water Block Review
 

At the end of the day, it comes down to the individual user. This block looks great, and provides the best out of the box performance in a high flow loop. If you're running a low restriction PA120.X radiator with a high flow pump (D5, DDC w/Petra top, or Iwaki) and nothing else in your loop, the XWB-1 is the block to beat.

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