Hey, I have the m900 with an i5-6500, 8gb ddr4 2133mhz ram, and I put a 550w psu, ssd, and gtx 1060 6gb in, it's been working good but I want to put 16gb more ram into it for a total of 24gb.

https://www.newegg.com/Product/Product.aspx?Item=N82E16820232716

Will this ram work in my system? If it doesnt work well with the 2x4gb sticks from lenovo can i just put the new 16gb in and just have 16gbs total or am I good to just add the 16gb to my current 8gb ram from lenovo and mix them?

Could be the wrong memory. Even if "compatible" it is faster than your existing slower memory from Lenovo for the M900 (tower, I assume, since you didn't say) which is DDR4-2133, so your Newegg memory will be slowed down to match what you have.  The BIOS doesn't support memory faster than DDR4-2133 so that's the speed any faster memory will be slowed down to run at anyway.

If you want to add 2x8GB=16GB to your existing 2x4GB=8GB I'd recommend you go with the M900-tower guaranteed compatible memory offered by Crucial so that you get the full 24GB benefit.

Would the computer boot if I added the 2x8gb sticks of the New egg memory to my current 2x4gb lenovo memory for a total of 24gb?

I honestly don't know.  You can certainly try it for yourself and find out.  I would think the BIOS should be able to cope, but you'll find out quickly enough if it doesn't work.

Worst case if it doesn't work return the memory to Newegg and buy something that for sure is a match to what you have now.  I'm quite sure you're not going to see any benefit from the speed of this faster memory as the machine itself is built for DDR4-2133 so the new memory will be operating at the slower speed per the BIOS.

Yeah the timing and CAS latency is probably different but the ram I'm looking at on newegg is probably better than the lenovo ram and can be scaled down to match the ram intended for this pc.  I just hate spending 120 USD and then having something not work and going through amazon/neweggs slow return process.

Also read about 1Rx8 and 2Rx8 or something, completely lost about what that is, it's like the chips are on 1 side for 1Rx8 and both sides for 2Rx8, my lenovo 2x4gb sticks say 1Rx8 but the newegg ram doesn't say if it's single or dual and I don't think you can mix those? 

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Yeah the timing and CAS latency is probably different but the ram I'm looking at on newegg is probably better than the lenovo ram and can be scaled down to match the ram intended for this pc.  I just hate spending 120 USD and then having something not work and going through amazon/neweggs slow return process.

 

 

Also read about 1Rx8 and 2Rx8 or something, completely lost about what that is, it's like the chips are on 1 side for 1Rx8 and both sides for 2Rx8, my lenovo 2x4gb sticks say 1Rx8 but the newegg ram doesn't say if it's single or dual and I don't think you can mix those? 

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This 2x8GB=16GB from Crucial is GUARANTEED TO WORK. It costs $116.  It is simply the memory cards, at the correct speed and  timings and latency to match your M900.  No chance these won't work.

Your 2x8GB=16GB TridentZ from G.Skill costs $115 Newegg (same price as Crucial), but is unnecessarily fast (since it will be slowed down to DDR4-2133 anyway), is unnecessarily physically larger due to its purely cosmetically unnecessary "RGB LED light bar" plastic housing on the memory which resides within, purely to put out a light show.  I'm sure these cards will physically fit in your M900 machine because memory UDIMM sockets on all motherboards are always spaced apart the same.  But they're "taller" because of the plastic housing, so they might have been more difficult to install if your CPU cooler was very large.

If you run HWInfo64 and examine your existing installed memory, you will almost certainly find that your existing 2x4GB memory is "single-rank".  These two But both cards installed as a "matched pair" (i.e. currently installed either in UDIMM sockets #1 and #3, or in UDIMM sockets #2 and #4, which are the two motherboard hardware "pairs" which when occupied by matched pairs of memory cards will operate in the optimal "dual-channel" mode) should be of the same design type, either single-rank or dual-rank.  You shouldn't mix these rank type within one "pair" of UDIMM slots. But there's not problem having one pair single-rank and the other pair dual-rank, if that's what it turns out to be.

However, here is a "note" from the G.Skill web site:  "Rated SPD frequency requires compatible CPU and chipset support".  This memory is most certainly NOT a "match" for your M900 and its currently installed memory, although it still may work.  But it may simply be too fast, and not work, in which case you're going to have to return it anyway.

I completely understand, it's just that the resale value of the "pretty" ram is much higher if I ever decided to sell, plus I am planning on getting a new mobo and moving all the parts but the mobo into a new case for aesthetic purposes in which the rgb ram would look cool IMO. If the ram is too fast, I can downscale it in the bios to 2133mhz but is it possible to also change the CAS latency and timing?

This is a Lenovo business-friendly enterprise-requirements M900 machine, using a vanilla motherboard that was not designed for gaming or high-end performance, or overclocking or performance tweaking.  If you wanted that you'd have bought a high-end ASUS or other motherboard built with fooling around in mind and whole chapters in the user manual instructing you on exactly what you can do and how, where the BIOS supported exactly that type of manipulation.

You're not going to find that in the Lenovo M-series machines, which are excellent for home and business use... but are definitely not designed for much more than their PSREF sheets specify.  There is no BIOS capability to custom adjust memory profiles or timings.

Look, it's only $115.  You can't lose much, even if you have to return it to Newegg and pay a 15% restocking fee because "you changed your mind, not that it was defective".  You could certainly try and talk them into a 100% refund because "you thought it would work but it didn't".  Either way you're only talking about a very minor dollar loss, and then you just buy the proper Crucial 100% guaranteed compatible memory to get you up to the 24GB in the machine which was really your intent in the first place.

If your heart is set on the cosmetically entertaining light-bar memory then go with it.  Worst case it doesn't work (which you won't know unless you try it) and you return it, and get what definitely will work.

You're right :) I'll just get it from amazon since they're pretty cool about not charging restock fees, thanks :)

I'm gonna order from ebay do you think this will work? the ram on crucials site is 2400mhz ddr4 1Rx8 but the ram on ebay is used and cheaper, it's 2133 ddr4 1Rx8, my current lenovo 8gb of ram is only 2133 so I don't think the crucial 2133 ram on ebay will be an issue do you?

https://www.ebay.com/itm/8GB-2x4GB-Micron-Crucial-DDR4-2133P-desktop-DIMMS-PC4-17000-CT4GDFS8213-1Rx8/223392486197?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160908131621%26meid%3Dd92e4983ea214beda96deea8c55ea672%26pid%3D100678%26rk%3D1%26rkt%3D15%26mehot%3Dlo%26sd%3D223392486197%26itm%3D223392486197&_trksid=p2481888.c100678.m3607&_trkparms=pageci%3Ae1f30050-3862-11e9-9dda-74dbd1806c16%7Cparentrq%3A20c9e4601690ab1490866586ffee4211%7Ciid%3A1