1) CPU: is it worth it to change the thermal grease? I got some leftover Noctua
2) RAM: with modded bios 1.43 (whitelist removed), I figured I should buy 2x8GB ddr3 1866Hz, but they also come in various CL speeds (1866 CL11, 1866 CL10), would the fastest CL10 work? is it worth the extra money?
3) SSD sata III: I feel that these days the sweet spot is a 512GB Samsung 850 Pro, not sure a better SSD will ever come out on SATA
4) WLAN+BT half height mini pcie: WIFI AC 2X2 + Bt 4.0 based on Broadcom BCM4352 (e.g. Dell DW1550) because I trust Broadcom more than Intel (7260) and Atheros for wifi performance/issues and I tend to have Broadcom wifi chipsets on the AP side at home. It's pricier than other AC cards but it's also one of those cards that play well with macOS. Would you advice other solutions?
5) Lenovo Bluetooth daughter card: this is where it gets confusing. How does the "double bluetooth" situation play out? I mean if you have BT4.0 on the wifi card and BT3.0 on the daughter card. Which takes precedence? What does Windows10 do? What card activity is then linked to the green bluetooth LED? Should I also upgrade this card to the lenovo 4.0 FRU 60Y3303/60Y3305 just for the heck of it?
6) WWAN (for EMEA region): I understand Sierra Wireless MC7710 is the best option and has the antenna connectors of the right size (not the smaller ones in later Sierra cards)
7) ExpressCard 54 flush always in: Startech two port USB 3.0, does anybody have one? Is the high price justified by a better build quality compared to cheaper USB cards? Would you go for a three port one?
9) AC adapter: I think I should buy a 135W original one just to be on the safe side and quickly charge x220(6-cell)+slice_battery with ease
10) Batteries: I'm on 2011-manufactured 6cell + slice (less than 10 cycles each) and Windows 10 estimates 20hrs if completely idle and 8-9hrs if doing anything at all, not sure I should ruin the profile of the thinkpad with a protruding 9-cell? Maybe recently manufactured straight from Lenovo site?
thanks for the attention






