Fijate si hay signos de pregunta y sobre la placa es un poco vieja... si no queres gastar mucha plata anda por mother con ddr2 800...
No voy a poner la especificaciones de abajo ya que no lo vas a entender supongo...
1. Socket 754 for AMD Athlon™ 64 and Sempron processors
2. NVIDIA® nForce3 250 Chipset
* FSB 800MHz, Hyper-Transport Technology and AMD Cool 'n' Quiet Technology
* Supports DDR400/333/266 with 2 DIMM slots, maximum capacity up to 2GB
* Hybrid Booster - ASRock Safe Overclocking Technology
* Untied Overclocking : During Overclocking, FSB enjoys better margin due to fixed AGP/ PCI Buses
* 1 x AGP 8X slot
* 2 x SATA 1.5Gb/s connectors, supports RAID (RAID 0, 1, JBOD) and "Hot Plug" functions
* 7.1 CH Windows® Vista™ Premium Level Superior Audio (C-Media CM6501 Audio Codec with UAA architecture), 10/100 Ethernet LAN
* Windows® Vista™ Premium 2007 Logo Ready
* ASRock 8CH I/O: 4 ready-to-use USB Ports, 7.1 channel audio jacks
Link:
http://www.asrock.com/mb/overview.asp?Model=K8NF3-VSTA
Saludos!