Help me add compatible Laptop RAM-E570

It doesn't usually matter. Just get the cheapest one.

Wow, is RAM ever overpriced right now. This is the cheapest in PCPartPicker:

https://www.newegg.ca/Product/Product.a ... 6820232186

It's a better choice than the G.Skill you linked - cheaper and also shipped from Canada rather than USA.

birthdaymonkey wrote: ↑ It doesn't usually matter. Just get the cheapest one.

Wow, is RAM ever overpriced right now. This is the cheapest in PCPartPicker:

https://www.newegg.ca/Product/Product.a ... 6820232186

It's a better choice than the G.Skill you linked - cheaper and also shipped from Canada rather than USA.

really? I read a bunch of stuff how it can be 50-50 if ram will work if matching different pairs because of timings and such

icecoal wrote: ↑ really? I read a bunch of stuff how it can be 50-50 if ram will work if matching different pairs because of timings and such

50-50 is a big exaggeration. More like 95-5 in favour of success. The computer will automatically clock the modules to the lowest common denominator. So if one of your sticks is 2400 cas 15 and one is 2400 cas 16, the computer will run them both at 16. Similarly, if one of your DIMMs is 2133MHz and the other is 2400MHz, the system will run them both at 2133 to ensure things work properly.

I'm running two unmatched 2133 modules in my T460s that I'm typing this from - one of them is soldered to the mainboard (4GB) and I bought a generic Hynix 4GB module for 8GB total - works perfectly fine in dual channel mode, 100% stable. In my wife's Pentium G4600 mini desktop, I've got two unmatched (different brand) 8GB SODIMMs for 16GB total, also works perfectly in dual channel.

There's no guarantee of compatibility (especially when DDR4 was brand new) but with the current state of affairs - now that OEMs have released 2nd-gen DDR4 products like your T570 and BIOS updates for older products - chances are excellent that two different memory modules will "just work" without any issues.