Hi everyone.

Could you recommend me the best motherboard for the following specs?

- Intel Core 2 Quad Processor QX6850 3.0GHz 1333MHz 8MB
LGA775 CPU.

- 2048MB PC6400 DDR2 800MHz Memory

- PCI Express nVidia Quadro FX4500 512MB

At the moment I have this:
Motherboard - 4CoreDual-SATA2 16XPCI-Express & 8X AGP Supporting Kentsfield QUAD CORE CPUS

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SPECS:
General
CPU
- LGA 775 for Intel® Core™ 2 Extreme / Core™ 2 Duo
Pentium® XE / Pentium® D / Pentium® Dual Core
Pentium® 4 / Celeron® / Celeron® D,
supporting Quad Core Kentsfield processors
- FSB 1066/800/533 MHz
- Supports Hyper-Threading Technology
- Supports Untied Overclocking Technology
- Supports EM64T CPU
Chipset - Northbridge: VIA® PT880 Pro/PT880 Ultra
- Southbridge: VIA® VT8237S
Memory - Dual Channel DDR/DDRII memory technology
- Supports DDRII667/533/400/333/266
- 2 x DDR DIMM & 2 x DDRII DIMM slots
- Max. capacity: 2GB
BIOS - 4Mb AMI BIOS, AMI Legal BIOS
- Supports "Plug and Play"
- ACPI 1.1 Compliance Wake Up Events
- Supports jumperfree & SMBIOS 2.3.1 Support
Audio, Video and Networking
Graphics - n/a
Audio - 7.1 CH Windows® Vista™ Premium Level HD Audio
(ALC888 Audio Codec)
LAN - VIA® PHY VT6103
- Speed: 10/100 Ethernet & Supports Wake-On-LAN
Expansion / Connectivity
Slots - 4 x PCI slots
- 1 x PCI Express Graphics slot & 1 x AGP 8X slot
Connector

- 2 x Serial ATAII 3.0 Gb/s connectors, support RAID
(RAID 0, RAID 1 and JBOD) and Hot Plug functions
- 2 x ATA133 IDE connectors (support 4 x IDE devices)
- 1 x Floppy connector, 1 x IR header & 1 x Game header
- 1 x HDMI_SPDIF header & CPU FAN connector
- 20 pin ATX & 4 pin 12V power connectors
- CD in header & Front panel audio connector
- 2 x USB 2.0 headers (support 4 USB 2.0 ports)
Rear Panel I/O HD 8CH I/O
- 1 x PS/2 Mouse Port & 1 x PS/2 Keyboard Port
- 1 x Serial Port: COM1 & 1 x Parallel Port
- 4 x Ready-to-Use USB 2.0 Ports
- 1 x RJ-45 LAN Port
- HD Audio Jack: Side Speaker / Rear Speaker / Central
Bass / Line in / Front Speaker / Microphone
Other Features / Miscellaneous
Hybrid
Booster - CPU Frequency Stepless Control
- ASRock U-COP & Boot Failure Guard (B.F.G.)
Support CD - Drivers, Utilities, AntiVirus Software (Trial Version)
Accessories - Quick Installation Guide, Support CD, I/O Shield
- 1 x SATA data cable & 1 x SATA 1 to 1 power cable
- 1 x HDMI_SPDIF cable
Hardware Monitor - CPU & Chassis Temperature Sensing
- CPU & Chassis Fan Tachometer
- CPU Quiet Fan
- Voltage Monitoring: +12V, +5V, +3.3V, Vcore
Form Factor - ATX Form Factor: 12.0-in x 9.6-in, 30.5 cm x 24.4 cm
OS - Microsoft® Windows® 2000 / XP / XP 64-bit / Vista™
Certifications - FCC, CE, WHQL
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As you can see, it even doesn't support 800MHz memory (667 is highest).
Will it support my Intel QX6850 3.0GHz with 1333MHz FSB?

I suppose I should get the latest fastest board, which one?
Thanks

I also need at least 2 PCI slots for 2 sound cards (but prefer 3)

Anyone?