ECS PF88 Extreme Hybrid (2005): AMD and Intel on one boardASRock apparently likes to be different. The ECS PF88 Extreme Hybrid supported Socket 775 Pentium 4 processors, and with the special expansion cards it also supported AMD Athlon 64 Socket 939 processors, Socket 479 (Pentium M) and Socket 754 (AMD Sempron).You had to choose between AMD and Intel, however, you couldn't use both types at the same time.