First off, the 750M SLI has been in great demand from what i've been reading and is usually out of stock, so you won't be able to find it on the lenovo site. I have a 410p and i've talked with tech support a few times and they told me that they would eventually get more stock, but couldnt give a time frame. Im guessing its a problem with them just not having enough stock currently. Keep checking everyday, maybe you'll get lucky.