Thermalright has always been a powerful force within the cooling scene. Their high performance cooling products are always at the top of the pack. Today I will be looking at the AX-478 cooler. The AX-478 is merely the P4 version of the insanely popular AX-7. The reason for the AX-7’s popularity was the cost to performance ratio. It performed as well as other heatsinks that were twice as expensive. Hopefully, the AX-478 will do as well as its Socket A brother!