Intel i955x

I em going to upgrade my rm but i was doing my research and now i em completly confused.Some web site are telling me that there is no difference between i955x and 955x chipset besides supporting dual core cpu.
My questions is can i install 8 gb of ram into my hp motherboard(0A00H) i955x chip set.
Some site tell me i can some tellme its 4 max.

Thank you!

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