I bought a dell 700m notebook recently and went shopping for ram. Kingston Technology sells two types: one that's verified to work with my laptop, and one that's generic. The two are price accordingly with 1gb price being 206.99 (buy.com) and 109 (outpost.com after rebate), respectively. This seems to be a clear case of price discrimination since computer components are sold with such exacting standards.
I went with the cheaper ram and it works ok in my laptop. I can get it to work if I remove the original 256mb that it came with and install it in the slot underneath the keyboard. It won't work in tandem with the 256mb oem stick. I'm not sure why that is, but the memory diagnostic I ran (Memtest86+) seem to find everything fine with the 1gb of generic memory. If I could afford to order the "verified to work with" stick I'd do some comparisons. Now it could be that the 700m doesn't like the different memory sizes in each bank when installed together or there is some slight incompatibilities. I'll leave that to anyone's guess... Anyway, price discrimination in this case may be working through our own fears of installing some "generic" piece of component into our shiny new laptop. When I called Kingston before making my purchase, they told me that, "no, the KVR333 model won't work with your computer. You should get the KTD-INSP5150." But it does work (under the conditions stated above).
Ok, just thought I'd share this in case anyone wondered about this. I'm sure someone will google this topic. If you have any additional information about how the memory components are different, I'd like to know...
Now -- to sell that ol' 256mb stick on ebay.