I was looking to purchase a 4 X 2GB 800 MHz memory kit for my upcoming mac pro. I checked with a local reseller and a national on-line reseller (I'm in Canada). Both quoted prices double that of OWC. When I told my local re-seller that I could spend half of what he wanted for RAM from OWC, he forwarded my email to his salesman at NuImpact. Here's the reply: "Here is the difference in the so called apple certified modules. Call OWC and ask if the chips are "native 800". They say "we build to meet and exceed apple specs" no real answer then when you ask if the chips are 667 pushed to 800 they say no but will not tell you the chip on board or the controller chip there for you don't know what your getting. If you buy the 667 pushed and run them your 100% going to have issues after a while.... You will never know if the chips are 667 until you have the chip part# before you buy . We will run into these kind of issues when new products get released there is no way in hell that the price difference should be that big on "native" chips. Let me know what you think.... We only build on Micron "Native" chips with IDT controller / 8 layer boards" So, opinions on whether OWC's RAM is legitimate 800 MHz or is the salesman at NuImpact just dissing the competition because he can't match their prices?