DDR 500 memory compatible with MSI K8N Neo4 Platninum?

Question

Hi Folks,
I have a MSI K8N Neo4 Platinum PCB version 1 (S939/Nvidia NForce 4 Ultra), running the latest BIOS version.  I wondered if DDR 500/PC4000 memory would work at DDR500 speeds?  I note that the MSI webpage for this mobo only mentions DDR400 and in the manual, the BIOS description under "Advanced Chipset Features" - "Memclock Index Value (MHz)" says the maximum speed is 200MHz.  However, when I go to this setting in my own BIOS, I can set it to 250MHz.  I assume that this should give me DDR500?  Would altering this "Memclock Index Value" above 200 MHz cause any other problems with FSB, CPU, HT, PCIe, PCI speeds etc. or is it completely independent?  Does anyone have any recommendations of what sticks would work best (I was thinking 2 * 1024 Mb of Corsair XMS or OCZ XTC).  Now that DDR2 is standard and DDR prices are creeping up, there doesn't seem to be much difference in price between DDR 400 and DDR 500 memory.  Evern if my mobo can't support it, is there any merit in buying DDR 500 memory and running it at DDR 400 or intermediate speeds?
Cheers!

Answer 1

The x2 4800 would run 10x250=2500mhz.
With ddr500 it's beautifull,since you can use the cas latencies which are suited for the memory.
I have to lower my timings a bit to run them at 500mhz.Not much though,but I don't know what the long term prospect is for my memory if I maintain that for long periods of time.
As for running games,I found lower cas timings make my games run smoother opposed to the slightly higher ddr clock with slower timings.
But as mentioned,set cpu vcore 1 step higher in bios,leave the memory at auto,set cpu fsb or HTT at 250mhz,and use the default multiplier of 10 or also leave on auto.'The memory runs in spec and you wont damage it,only the cpu's get another 100mhz and should be a little bit more spicey while temps shouldn't go much higher as it is now.
The sticks should fit physically and I ran mine once at 266mhz stable,and they are just pc3200@200mhz