Query using DDR3 memory in Lenovo Y50-70 & 4k screen replacement

[aruk5]

Hi

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Recently I purchased a used Lenovo Y50-70 gaming laptop. The specs are:-

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i7 Processor

16Gb DDR3L RAM

1 TB HDD

GTX 960M 2GB

4k screen [samsung pls]

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I've two queries:-

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1.This laptop came with 16 GB DDR3 L RAM [ 8GB x 2 samsung pc 12800]. They run at 1.35 volt. I have removed this RAM and installed 8GB of DDR3 RAM [4GB x 2 samsung PC 3 -10700]. They run at 1.5 volt. On bootin the system didnt give any warning about the RAM and the system runs fine. Now I am aware installing DDR3 RAM will reduce performance but what I want to know is will using a DDR3 1.5 volt RAM instead of 1.35v damage the mother board or processor in long run or are safe to run in this laptop?

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2.This laptop came with a 4K screen. The installed screen is a Samsung PLS screen. This screen though quite sharp is not very bright at its native settings [especially at 4K with or without scaling]. Using the intel HD graphics controller color settings doesnt make it any better] I want to know if there are any good replacement screens for this laptop which come with better brightness at native settings [like above 300 nits] and if any would appreciate if you could recommend a good replacement screen

 

[hang-the-9]

Using standard instead of low voltage RAM should not damage things, but it's very odd that you would want to make the system slower by using slower RAM and dropping the RAM in half. It will also decrease battery life a bit.