Hey guys. A question about RAM upgrades...

 

Currently running Unraid on my HP Gen. 8 with 2GB RAM.  I want to pop another 8GB stick in there.  I have no idea about RAM these days, I haven't bought any for ages.

 

This stuff is 1333Mhz, PC-10600, 240-pin DIMM, DDR3:

http://www.amazon.co.uk/Kingston-KVR1333D3E9S-8G-1333-240-Pin/dp/B0064Z71NY?ie=UTF8&psc=1&redirect=true&ref_=ox_sc_act_title_1&smid=A3P5ROKL5A1OLE

 

I took a photo of the current 2GB RAM module. It appears to be PC-12800.  Is that a problem with matching?  Would this be better?

http://www.amazon.co.uk/Kingston-Technology-DDR3-Memory-Module/dp/B008LMNHB8/ref=pd_sim_147_6?ie=UTF8&dpID=41fjlWTLIKL&dpSrc=sims&preST=_AC_UL160_SR160%2C160_&refRID=01116W684AFX9PWESH6A

 

Do I need to run these in matched pairs? etc...

 

Sorry for all the Q's.

First thing I would do is to locate the Manufacturer's manual on the MB.  I would think you could find one on the Hp website.  Then read the manual for their recommendations. 

 

Most of the time, people tend to populate MB with matched pairs of memory (2 X 2GB) but I don't believe there is a fast and hard rule on that.  Again, the MB board may also restrict what you can do.  Try to stay with modules that have the same timing spec and voltage requirements.  Otherwise, you could find that one module may not be recognized.

 

Another consideration is what are you going to be using this server for?  Basic NAS functions only?  (8GB is more than enough.)  Basic NAS plus two or three dockers?  (Again, enough.)  NAS plus Dockers and VM's (Possibly enough, 16GB would probably be better.)  So you could just decide to deep six that 2GB if it was incompatible.

It also depends on your CPU, Xeon supports up to 1600Mhz, Celeron and Pentium up to 1333Mhz, so even if your current Dimm is 1600 it will only work @ 1333 if you don't have a Xeon.

 

There's usually no issue mixing sizes.

Usage is mostly basic NAS stuff, Music & video streaming.  I may play around with some VM stuff in the future, but in general I just think that 2GB is a bit stingy these days...

I believe the CPU is a Celeron.

Pic of the current module attached.

With a Celeron you can buy 1333 or 1600, it will always work @ 1333.

ok, thanks for the confirmation.  So I can save a few $$$ and go for the cheaper 1333 stuff.

What exactly does this number refer to then? PC-12800.

Thanks.

pc3-12800=1600Mhz

pc3-10600=1333Mhz

 

Different ways of classifying memory, first is by the peak transfer rate, second is by frequency.

 

 

thanks