Computers & Tablets

[cmp]

I got ddr3L PC3-12800 1600 MHz So-dimm 204 pin that came with m y laptop.I got a pny DDR3 pc3-12800 DDR3 I got  and my question can you mix the ram or it got to be the same in a MacBook Pro?

Could this be the prob in Mac 10.11.6 I have slow boot up yes I am using ssd?

[bobberuchi]

Did you just update to Mac 10.11.6?

If it was starting fast and is not doing so now more ram probalby won't make a difference.

Your SSD should boot you up pretty fast.

I read some issues from other users about problems after updating to Mac 10.11.6

[cmp]

Yes I update to Mac 10.11.6.after I download Xcode I turn off and it will not boot for a few mins I was it was the mix ram?

[cmp]

I got a low ram mad high ram in my MacBook Pro and I got a sad drive in it same prob.

[bobberuchi]

What? Could you try to say that again.  

[cmp]

I said I got ddr3L and ddr3 in my laptop could this be the prob?

[hockeycanuckjc Valued Expert]

Both ram sticks no matter Mac or PC must have the same speed. Since it's an Intel processor being used now, if you have two ram sticks and they have different speeds, for compatibility reason, the lower speed ram stick downclocks the faster one if it supports it. If it does not, you will run into lots of problems. 

[cmp]

You mean like slow boot up sometime but they have be both the same?

[hockeycanuckjc Valued Expert]

Example :

Ram stick one has a 100mhz bus speed

Ram stick 2 has a 133 mhz bus speed.

If you use both, the motherboard is forced to downclock stick number 2 to 100mhz if it supports downclocking for compatibility reasons. This can open up a wide range of compatibility issues and a much slower computing experience. Both sticks should match types and bus speeds for maximum performance. 

[cmp]

I got like DDR3L 1600 and DDR birth are Pc3-12800