16gb + 4gb or just 16gb?

[rinkol]

So I have Lenovo laptop and I'm planning to update its ram and buy a single 16gb so I could leave one empty slot for future 16 gb more, but until then shall I use current 4gb in one of them as its 2x4 right now or shall I just leave it empty ? Ive heard that mismatch might cause conflicts/drops in performance, so would be there any use of these extra 4gb? I'm 3D rendering heavy so the more ram the better. Thanks!

 

[Doramius]

In this instance, I don't think you'll have an issue. However, more detailed answers can be provided if you had a few more specifics. Model of the Lenovo would be great.

Most of the time, I've seen Lenovo laptops work fine with 20GB of memory, using only 2 sticks. However, the mainboard supported the configuration and the amount of memory. I've seen others where the max supported was only 16GB, even if you put 2 sticks of 16GB in it.

 

[rinkol]

the laptop is lenovo 700 15isk, ive read successful reports of installing 32 gb of ram and having no issues, so i hope 20 will do too

 

[Tradesman1]

Specs say up to 16GB of DRAM, might be able to run more but might also cause heating issues

 

[Doramius]

Agreed. Specs show 16GB supported. You can try it, but note that you will want to keep an eye on it.