DARKWORLD

If you're not planing to OC anything - here's official guide.

If you're looking for a solution then you need to flash a new VBIOS on your ultrabay card in order it to work on win 8.1.

It doesnt matter, but you should check your motherboard compatibility with 1600Mhz RAM.

If you have Lenovo Energy Management installed then its more likely due to your system being in power saving mode, regardless of state. Changing this to Balanced or High Performance modes should resole your issue.

Yes, it is common. Ultrabay card usually doing nothing during normal use and since CPU and GPU located on the left side of the laptop it gets warm.

Here you go, no voltage control though. SLI 650m - 80.07.27.00.3A mod WIN 8.1.zip

Set it to 1.100, it will be constant 1.062.

You should really just REPASTE it, or ask someone who can do it for you!

I think I will run same overclock after all. Played 5 hours of Civ5 on +410, temps getting bigger - 78 C / 83 C, I dont like this ._. Then I played Civ5 @ +310/200 @ 1.075, game crashed after 2 hours, though I am not entirely sure it was driver crash, since there were no error messages like usual, probably it was just a typical game crash. Need further testing. Also as you mentioned cards working on lower voltage, in my case they were working @ 1.037 instead of 1.075 and voltage not even jumping during gaming, thats weird.

Hello! Would like to request an unlocked vBIOS for Lenovo Y500 (GT650M) which supports Windows 8.1 and with voltage control. Thank you!~ GT650M_3A.zip

Yeah, well, I played 3 hours of Civ5 on this crazy +410 and temps were kinda fine, 76C / 78C (+6-7C compared to +265). The best thing is that there were no crashes (strange, since in win8 I couldnt even run +300/+200 without crashes) and fps on max settings in Civ5 went even higher (57 avg. vs 52 avg. on +265/+200) and with trhrottlestop its almost always 60. Win8 will work even with 2.04, the thing here is that theres no 2.04 bios for ultrabay card so that basically renders 2.04 overvolting feature useless, thats a shame - so much potential.

Cant say for sure but thats probably due to vanilla win8, I flashed to 2.04 on the preloaded win8 and got like ~5000 in 3dm11 with +300/+200 and occasional crashes, really disappointing. Shame you cant try it on 8.1, well anyway there's no ultrabay 2.04 for 8.1 to check full potential. Wow, thats a hefty overvolting. So I tried similar overclock +310/+200 @ 1.075 V, got this: ***5327 3dm11*** Temps during bench 65C / 69C, dont know if it stable for practical use though. Gonna test it out with Civ5 today. EDIT: Screw this, +410/+200 @ 1.200 V, here you go: http://www.3dmark.com/3dm11/8193584 Actually placed 1st in valid results, lol. You cant run any SLI setup with different frequencies, well technically you can set different frequencies for your cards but they will operate and downclock themselves to the lowest clock presented. Sure, I am currently running +265/+200 @ 1.050 V (+125 mV) on both cards, usual temps are 76C / 74C. And gonna test overclock I mentioned above, since it yields almost +200 score in 3dm11, though temps will be much worse I presume. And I have a desire to try all this on win8.1, as soon as my new SSD arrives. Gonna try and ask people around for 2.04 ultrabay bios.

My temps are the same on both cards, eventhough I am overvolting ultrabay a bit due to stability issues. I am getting ~74C and ~73C on ultrabay in a long Civ5 sessions (4-5 hours). If it will be getting too hot you should probably consider repasting it. I recommend you to make a few long gaming sessions to test stability of you overclocks. For example my ultrabay card is pretty bad when it comes to overclock, I cant get it past +265/+200. Well, technically I can for bench purposes but it's not stable in the long run, even at +265/+200 I need to overvolt a bit to prevent crashes. Its a shame, since the other card works stable at +310/+600 even without overvolting. I am just saying that eventhough it might run benches fine and look stable but during longer sessions it can result in a nasty crash, so you really want to test that out. My best STABLE result so far @ Win7x64: NVIDIA GeForce GT 650M video card benchmark result - Intel Core i7-3630QM Processor,LENOVO INVALID

So what temps you are getting?

You mean the msata slot, right? If so you could actually just buy msata ssd and keep your stock 1TB as a storage.

Yeah, I've flashed from stock to 2.02, then to 2.04, then to 3A and then again back to 2.04, all working so far.

I would go with Crucial M500: cheap, reliable and fast.

Hey guys, wanted to ask if your msata ssd's getting hot in this laptop. As you can see on the OP screen's its located very close to the pipe, and I think its the main reason... Poor placement. I am getting 45-60 C, its not very good-__-

880 is like +10% over 780. Like the 3rd and 4th gen intel CPU's for exapmle, I dont think its all worth the hassle.