Just Upgraded RAM why does it say 1333 instead of 1066???

I have a the Mac Book Unibody 2 Ghz Intel Core Duo. I just installed new RAM in it. I know it runs PC3-8500 DDR3 1066 MHz. Thats what I ordered on EBAY. It arrived and I put it in my computer. When I checked the About this Mac Section it said I had 8 GB 1333 MHz DDR3 ?????? Has anyone else experienced this problem? Did the company send me the Wrong RAM or is it clocked down to 1066? I have 2 hard drives right now. I know I have to run 10.6 or higher and Running Boot ROM version MB51.007D.BO3 to actually be able to use the 8 GB. I am transfering all my data to myother Hard drive with Lion on it. Is it ok to run this RAM or Not??? Thanks.

I am having a similar issue.
I have a Macbook5,1 with a intel core 2 duo 2.4Ghz this is the late 2008 modle that came in both a 2.0Ghz and a 2.4Ghz version.
you can find specs for my model and the model i belive besimple1 has here:
http://www.everymac.com/ultimate-mac-lookup/?search_keywords=MacBook5,1
The computer originally came with 2 GB of 1066 MHz DDR3 SDRAM (in two 1GB sticks). I purchased a upgrade pack of ram (2x4Gb Mushkin PC3-8500 DDR3-1066)  and installed it and now the computer tells me I have 8Gb of 1333 MHz DDR3 under "about this mac"
I have found that many people have not had a problem running 8Gb of ram on the macbook5,1 dispite Apple stating the max capacity is 4Gb (plenty of forums online attesting to this)
I purchased the ram from NCIX (a reputable computer store in canada) and so I am sure I got 1066MHz ram. 
I am currently running memtest and it is telling me I have only 6100Mb and that there is a "data mismatch" error so I am going to return the ram for a new set, but the original post here leads me to think the miss identification of the ram by the computer may not be due to the problems with the memory memtest is finding.
any ideas as to why the computer says i have 1333MHz ram when I installed 1066MHz?
I will post if a new set of ram fixes this problem

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