Ram question, MacBook A1181

I have a MacBook A1181. It is a Core 2, 2.1ghz. I have a question on just how much ram it is expandable to.

I have 1GB currently, but wanted to do 4GB. Apples page says 4GB in the description, but other pages have said 2GB. Does anyone know for 100% sure?

The 2.1 is an early 2008/Penryn model and as such supports up to 6GB of RAM:

Apple MacBook Memory, Apple MacBook Pro Memory; MacBook and MacBook Pro Hard Drive Upgrades - up to 6.0GB DDR2 or DDR3 Memory, 500GB Internal HD! at OtherWorldComputing.com

Also see:

Apple MacBook "Core 2 Duo" 2.1 13" (White-08) Specs (Early 2008 - MB402LL/A*) @ EveryMac.com

Hey, thanks. I appreciate it.

4GB ram upgrade

I have White macbook / 2.2GHz duo/ 2x1G/ 120GB HDD/ SD/ AP/ BT
model on case A1181 and dated 2007

I wanted to upgrade my 2GB Ram 667MHz FSB to 4GB Ram 800MHz FSB.

I put 2 2GB ram in it and it wont boot up, it powers on but nuthin happens.

Am I suppose to reset sumthin or it just don't support it?

Thank you.