Asus X550JX extra ram

I have an asus x550jx which apparently has 4gb ram on its own and an expansion slot that allows for 4gb extra ram, which is supposed to be 1600MHz.

I borrowed a 8gb ram from my friend to see if it would work and it indeed worked, to some degree. I can see 12gb ram in task manager and I tried to fill it up to 11gb, it worked fine.

However the laptop sometimes BSODs, and some programs crash, something that did not happen with only 4gb extra ram.

When I check the ram speed, I see that my ram is working at 668MHz and 9 9 9 24 (i'm not sure about the timings), in comparison to 800MHz 11 11 11 28 which is the case with 4gb extra ram.

Is there anyway I can make any 8gb extra ram function properly? 8gb total ram is not enough for me, I need more.

 

Your BSOD's may be because the stick of RAM you are adding is faulty or more likely because you are mixing different speeds of RAM. Sometimes that is OK and the system will down clock all RAM to the lowest speed or sometimes it just wont like it and BSOD on you. Since you know it will support 12GB, order a new 8GB stick which matches your 4GB.

 

So you say there is a chance? But the extra 8gb ram was also supposed to be 1600Mhz. You mean the timings part?

Also why is my ram currently working at 800Mhz rather than 1600Mhz?

 

Right it should work. The timing or different speeds could also causing the BSOD as you mentioned 668MHz and 800MHz. The speed reports will usually show half the speed they are working at. For DDR (Double Data Rate) you double the speed its reporting.

 

The timings for ram's aren't usually advertised, and I never paid attention to it when I was buying ram for my desktop. Could that really cause a problem? I will also remove the extra 4gb and what the stats of the onboard 4gb looks on its own. (Or do you mean the MHZ?)

This is the 8gb I put in (only one of them): http://www.corsair.com/en/vengeance...laptop-memory-upgrade-kit-cmsx16gx3m2a1600c10

It does say 1333 and 1600, so I dont understand

 

Full timings are usually not advertised but CL usually is. By the info you originally provided it appears one stick is 1333Mhz CL9 and the other is 1600Mhz CL11. That could be causing the BSOD's. To be sure you can download Whocrashed to provide you with a easy to read dump report. You can also run Memtest86 to see if there is a problem with the RAM.

 

It seems unreasonable that the same kit would contain two different rams (just to be clear, I only have 1 slot, in which only one of those are placed)

I looked at whocrashed, it tells me a few of the crashes were due to " NVIDIA Windows Kernel Mode Driver, Version 347.25"
The computer starts to behave weirdly only with the extra 8gb when I try to plot something in the math software Matlab (the program crashes, however I still see it in taskmanager>processes even after I end the process and the window closes) (100% chance), a problem which does not occur with extra 4gb.

 

Also this is what CPU-Z tells me

It does say 1600 is max speed. Similar to what extra 4gb tells me

 

The speed reports will usually show half the speed they are working at. For DDR (Double Data Rate) you double the speed its reporting.

 

No, 800 Mhz is the memory clock rate. 1600 is the data rate in MT/s.

 

False memory. should low power memory 1,35 V instead 1,5V.
http://www.crucial.com/usa/en/compatible-upgrade-for/ASUS/x550jx
The memory clock is acceptable, but the power criteria is another