Anyone know the difference between the two, aside from the $140 price difference, and no Microsoft support on the OEM version?

Anyone know the difference between the two, aside from the $140 price difference, and no Microsoft support on the OEM version?
I think the answer you are looking for, as Drew implied is the license is different.
If you install a System builder license - you cannot later move it to a different machine.
You can upgrade that machine as much as you want - including the mobo - if windows thinks it is on a different machine - ring MS - they give you another key. They only let you do that once.
Some sellers throw in a jumper wire or something as cheap to qualify as equipment!
Joe
Well, I don't think I'll be putting it on a new system anytime soon. And considering it's $179 at NewEgg, I may have to hook it up...
Newegg.com - Microsoft Windows 7 Ultimate 64-bit 1-Pack for System Builders - Operating Systems
$10 promo code: EMCMLNN24
if I want to by a windows 7 Home premium to use in my desktop and 2 laptops (desktop currently with ubuntu and W7 RC and laptops with ubuntu and vista)
Can't I by a OEM for the three machines? For the laptops, will an upgrade work even if I don't have the FULL DVD for vista and only the recovery dvd's? (I would prefer doing a clean install)
Thanks!
If you want to use it on 3 machines - there is a family license - $150 I think- for 3 machines - you would need to check MS store for details.
You will be fine to use an upgrade key if you have an oem pre install on the machine.
Whichever way - you need a license for each machine.
thanks!
looks like u$s 150 is the 3pcs family pack (here)
To make a clean install can I use the purchased key directly or do I need to first install the OEM that the laptop dvd has?
And on my desktop, will it work since I only have W7 RC currently (my main OS there is ubuntu)
Thanks again!
no difference. the both use the same key.