Is it ok to use all memory sticks?

[Caple]

Hey everyone.
Right now I'm using an Epox 9NDA3+ mobo with 512Mb DDR400 Titan memory.
I got some days ago, in a good deal, two sticks of 256Mb DDR400 Samsung memory. Both sticks have the same series number written on the chips, K4H560838E-TCCC. Above this number is written SAMSUNG 620 in one stick and SAMSUNG 645 in the other. I believe I can use it as dual channel, right?
So, here is the deal. I asked Epox support if it's ok to use these Samsung memories AND the Titan memory too. They said they don't recommend.
I believe there would be no problems.
What do you guys think? Should I follow Epox support and keep 512Mb on my system (keeping Titan or changing for the Samsungs) or should I keep the Titan and add the Samsungs anyway? If I use all, is it ok to configure the Samsungs as dual channel or should I use on differente dual channel blocks to make it read all 64bit?
I never used three sticks of ram on any machine I had, that's why I'm asking now.
Thanx.

[Krispy Kritter]

It should work just fine. However, it will not run in dual channel mode and most MB's reduce the memory speed when 3 or more sticks are used.

Test it and see how it works.

[Caple]

Hmmm I'll try it later.
Thanx for the reply.