Be prepared, this is going to be a long post. The thing that will happen I hope is a descent supported list of memory on the Asus A8N-SLI Premium.

Not to bother you with too much detail:
I've finally found out that my mobo will not take Corsair CMX512-3200XLPRO into the 4 memory slots.
Investigating the issue further in depth I do notice that my motherboard runs without any hickups when only inserting 2 of those modules in the appropriate banks for Dual Channel DDR 400Mhz with CL2225 (my ram is ranked at those timings).

Digging deeper into the subject I was now looking to upgrade to 4GB on the motherboard. Of course that is 4 modules with more relaxed CL timings. But guess what. I asked the people at asus what they thought of this and they guided me towards their DDR400 Qualified Vendors List. No problem I checked the most recent on-line version of the Motherboard Guide (RTFM basically, no offence taken) and figure what it says: (Includes everything i mailed to asus support, oh and it's not the first mail on the subject)

I know this is not going to change much, but I do hope that my favourite and always ready to help hardware pages started by Mr. Pabst can push some things... I had the idea that including this issue in reviews would put some strain on the manufacturers. As you can imagine when people go out to buy their new system they need to do some digging, and i'm talking real deep digging to be sure that everything will work.
I was looking for a system that would give me not too much problems and I was willing to pay for it: €3000 budget to last a long time with not too many problems. Well I guess I was plain stupid bacause it all started off with a lot of problems.

Here is the specs:
- Asus A8N SLI Premium
- AMD X2 4400+ Toledo
- 2x Corsair CMX512-3200XLPRO
- 2x MSI NX7800GTX SLI enabled
- Antec TrueControl 550W
- 2x Raptor 36Gb RAID0
- PX716A IDE0-0, PX4012 IDE1-1
- CL Audigy1
- WINXP SP2 all patched

Thank you!

You don't need eyes to see you need vision.

If you set command rate from 1T->2T with the four modules inserted you'll have a much greater chance of running them @DDR400.

<b><font color=red>-></font color=red><font color=green>Thee obsoleter</font color=green><font color=red><-</font color=red></b>

...

Well i've done that to no avail.

You don't need eyes to see you need vision.