Sinbios

I'd be curious as well. Mine came with the SLI option, but I'd much rather have the optical drive.

I'll trade you the DVD drive for the SLI

Do the drivers install automatically? Or am I going to have to download them before I put the new card in? I'm ordering the Y510p and this card later today, and I'd like to be prepared to do whatever I need to

Should be fine if you have Win8, not sure about Win7. Might as well get the latest drivers anyway though since apparently it fixes a problem with sleep.

I grabbed an utrabay HDD caddy off ebay for the y510p which kind of fits but not too well. It's much smaller than it needs to be and doesn't lock into place like the ultrabay module is supposed to. Does anyone know where I can get an ultrabay HDD caddy that fits correctly, or what the official HDD caddy's FRU number is? I saw a "HDD bracket" listed in the hardware service manual with FRU 90201952 but not sure if it's the correct part.

for some reason now mine (also with the Samsung 840 evo, went from 4-5 secs boot to almost 30, and sometimes never reaches desktop, just stays with black screen. I am pretty sure its because win 8.1 update.

I will reinstall win8 without 8.1 later in the week and go from there...

Also using the Samsung 840 evo here and on Win 8.1, not having any problems. Boots super fast, I no longer dread reboots

@dmgloden

No worries! You IGU is by default, disabled! Windows runs on the first 750m card that you can't remove. If you're having an issue activating SLI there is an update in the lenovo forms where moderators in line with tech support first released the fix for windows 8.1. The issue is that when the new driver (anything newer than the release in sometime this last April) would break SLI functionality. After many complaints on the forum, they released new drivers and specifically -- this is Key -- a VBIOS update for the ultrabay 750m card which wasn't receiving the intended VBIOS update that apparently was already performed on the internal dedicated 750m. I don't understand how that works entirely, but for SLI to function I know the cards usually need to be the same so maybe the different VBIOS created an issue in windows 8.1.

Performing the steps listed on the site I was able to restore SLI with the ultrabay card in windows 8.1 pro. I'll edit try to get the link up here if you can't find it on their forums. A lot of people are having trouble with the fix, but it was pretty simple for me — I mean, you unzip a file, run a bat, and click y, then restart lol.

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Seems to me like Windows runs on the IGU by default, and then you can choose which card to run 3D applications on. I'm on 8.1 as well.

Anyone know if there are whitelisted AC cards that don't require a bios flash?