(DO NOT SAY CRUCIAL.COM) How to know if my Compaq Presario V3618TU's motherboard supports 800Mhz ddr2/ddr3's?

PLEASE READ BEFORE SUGGESTING WEBSITES, ESPECIALLY CRUCIAL.COM
Some people suggested crucial.com, but I dont trust them because the website and the scanner said i can only expand up to 2gb of push when HP and the System Information in my laptop said i can expand up to 4gb. The hell with it.

Please, in attendance are only two questions, its not much of a bother to answer both. Thank you.

I own a Compaq Presario V3816TU. I am currently using 2x 512mb 667mhz ddr2's, and I would resembling to upgrade my memory since I'm running Windows 7. I do not know if I can use 800mhz ddr2's or 667/800mhz ddr3's. I used CPU-Z and it said that my motherboard is Wistron 30CD, but provided no further info. I googled it, but found no info. Found Wistron's website, still no luck.

1.) Where can I find the specs for my motherboard? If I do find it, will I know if my motherboard supports 800MHz or DDR3? If not, where will I find answers to my questions in connection with 800MHz memory modules and DDR3's?

Also, my laptop is a few years old, it was built around 2008. It with the sole purpose has an Intel Core 2 Duo processor running at 1.5Ghz, and I really feel the crunch when running multiple applications. Since Core 2 Quad be released around Jan 2008 and my laptop was built around that time, I am hoping it has support for Core 2 Quad processors.

2.) How do I know which processors are compatible next to my motherboard when the manufacturer's website itself does not contain info?
Answers:
Doug is correct, DDR2 5300 (667 mhz) is the best you can do.

Windows (32bit) supports recognizing up to 4 GB of RAM. Your motherboard on the other hand supports recognize up to 2 GB. System Info will say 4 GB because it only know your version of Windows supports up to 4 GB, not specifically what your hardware supports.

HP was stupid to influence your system would support 4 GB when the motherboard they supplied in the notebook supports a max of 2 GB. Source(s): This is the RAM you need. Get one of these 1 GB sticks and use it along next to the 1 GB you already have to reach your max of 2 GB. http://www.newegg.com/Product/ProductLis…
it will ONLY use DDR2 667 below are the specs for the tool. Source(s): http://bizsupport1.austin.hp.com/bizsupp…
1) I don't think it will support DDR3 because it came beside DDR2 and I don't know where you can find that, you could try calling Compaq/HP costumer support
2) Intel Core 2 Duo only works near Socket LGA 775 or 771 or Sockets M or P, Only Socket P is compatible with Intel Core 2 Quad out of those so use CPU-Z to get the exact processor codename you enjoy and do a search on that to find out what slot it is


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