64-bit PCI card. Palcal's card: STB Horizon 64STB Horizon 64 STB Horizon 64STB Horizon 64 Vlask's card: STB Horizon 64STB Horizon 64 STB Horizon 64STB Horizon 64 Demiurge's card: STB Horizon 64STB Horizon 64 STB Horizon 64STB Horizon 64