ASRock M3N78D FX PC mainboard hardware details, and breakdown of ASRock M3N78D FX mobo features. Just enjoy next generation computing with ASRock 8-Core CPU Ready motherboard. Quoted from: NVIDIA nForce D. ATX. memory. Slots: 4 (2 banks of 2). Max Unbuffered DDR3 SDRAM: 16GB. storage. Storage: Serial ATA support. Chipset. Chipset: nVidia nForce D. Share. ×. M3N78D FX w w com NVIDIA® nForce D Detail Specification (HT ) Technology Chipset - NVIDIA® nForce D Memory - Expansion Slot - 1.