it will work with no problems. power consumption and fitting are same but you will need to remove the plastic part of the GPU. It will look ugly with copper heatsink visible but it works with no problems.
A Lenovo ultrabay is an expandable slot on Lenovo y400 and 500 laptops. From what I know it is a user accessible pcie 2.x slot. The limits of the ultrabay are mainly that it can only use the cards that Lenovo releases for its use, and when using an nvidia graphics card in SLI only one graphics card will be used when on battery.
From http://www.ff12sector.com/ff12_gameshark_actionreplay_cheat_codes.php :Action Replay Codes(M)5UAX-TGXU-M3FKTAJU4-MYW1-03NBJQuick License PointsRF2T-QH7K-QH4YZC0V8-TK0J-UYFJYL1+L2 For Max GilsUNWR-YV16-PQRQ7C7VQ-HYJ6-UH5ZP04EB-FUTP-NU9AAInstant MP Regen when using HP Regen SpellMMQC-AJ2B-WQU3X56RQ-3621-GV16YMax Cash After Buying/Selling Items33WQ-X4TD-HKUN1DH2V-ZUYQ-1K336Quick Exp Codes:WV75-KVNY-K7DNQ100 XP Per FightYPY9-4UVZ-0Q903Q479-KWD5-WT3B0500 XP Per Fight3PJP-XUC9-348F1T9HK-TCB5-UAUYV1000 XP Per FightWD3B-DCVX-7N51N68YX-FPQ1-KMMP45000 XP Per Fight1616-VX68-32JZ8EQ8Z-H9ZM-1H2XV10000 XP Per FightQYVY-E3NM-UXYG5Z0E8-TDJE-6YQ82Max Level After A KillXYFT-5Y0R-233AA60K8-TF7D-B68UCIn Battle Codes:79W7-P6KZ-A8MP9Infinite Health18JJ-G98A-MK3Z3CQ93-A5P6-3G8867JBE-906M-885PQ7VWZ-MWQ8-H6BZ2M5J8-1K0E-5T4YA6GG6-YA57-A0HKVInfinite MPK33C-Y400-K44JTCQ93-A5P6-3G886HJY4-5DYC-HAUCDJ98Z-TZEJ-J80MFM5J8-1K0E-5T4YA6GG6-YA57-A0HKVInfinite Health & MPECRZ-GRK7-TPPRXCQ93-A5P6-3G8867JBE-906M-885PQ7VWZ-MWQ8-H6BZ2HJY4-5DYC-HAUCDJ98Z-TZEJ-J80MFM5J8-1K0E-5T4YA6GG6-YA57-A0HKVParty Graphics Modifier Codes:JBDU-Z6NU-2V14PTurn Penelo Into a ChocoboG7RT-C55V-U77HXXCZ8-6K3Q-8ATAPBTHZ-QM83-DPJ8P3ZEE-D2DH-XZ7EG5EYZ-DMRM-V0R867B2X-VWYD-8N4J3Turn Vahn Into an EsperM3C5-JH16-PB77KCN67-9YCG-MZQXAKEKH-DNMT-460D65ZR5-MKER-K6QKD5EYZ-DMRM-V0R867B2X-VWYD-8N4J3Turn Ash Into an EsperKN40-TK8G-8H59QRVAA-RPZU-M10K4KEKH-DNMT-460D6TVQ3-88F8-JBVRG5EYZ-DMRM-V0R867B2X-VWYD-8N4J3I've used the quick licence points, max gils and infinite health & mp codes, all work for me(although the health & mp one is rather annoying, as you can't summon espers above level 1as it sticks your mp as it would be without more than one quickening unlocked).