What type of DDR3 RAM should I buy for my computer upgrade?

[MathematicalPhysicist]

I want to upgrade my computer by adding more memory to it.
My PC runs on UBUNTU 16.04 with:
processor: AMD A8-7650K Radeon R7, 10 Compute Cores 4C+6G × 4
graphics: AMD KAVERI (DRM 2.43.0 / 4.4.0-190-generic, LLVM 6.0.0)

I thought of purchasing: 1600MHz 2x8GB DDR3 PC3-12800 Desktop PC DIMM Memory Ram

So I searched through my terminal how many slots do my PC have, it seems I have only two more slots (currently have 2x8GB).

Here's the output of the terminal:

*-memory
description: System Memory
physical id: 33
slot: System board or motherboard
size: 16GiB
*-bank:0
description: SODIMM DDR3 [empty]
product: A1_PartNum0
vendor: A1_Manufacturer0
physical id: 0
serial: A1_SerialNum0
slot: DIMM 0
width: 64 bits
*-bank:1
description: DIMM DDR3 Synchronous 1600 MHz (0.6 ns)
vendor: A-DATA
physical id: 1
serial: A23B0000
slot: DIMM 1
size: 8GiB
width: 64 bits
clock: 1600MHz (0.6ns)
*-bank:2
description: SODIMM DDR3 [empty]
product: A1_PartNum2
vendor: A1_Manufacturer2
physical id: 2
serial: A1_SerialNum2
slot: DIMM 0
width: 64 bits
*-bank:3
description: DIMM DDR3 Synchronous 1600 MHz (0.6 ns)
vendor: A-DATA
physical id: 3
serial: A13B0000
slot: DIMM 1
size: 8GiB
width: 64 bits
clock: 1600MHz (0.6ns)

So am I right in that I:
1. have 4 slots, two are occupied with 8GB 1600 MHZ, and 2 more slots.
2. my option of purchase is: 1600MHz 2x8GB DDR3 PC3-12800 Desktop PC DIMM Memory Ram which is compatible with AMD motherboard.
?
Thanks in advance!

 

[MikeeMiracle]

Yes you have read that correctly. Another option would be to replace the memory for faster memory that runs at higher speed also but you would need to change it all as all the memory needs to run at the same speed, if you have 2 slower and 2 faster memory modules the whole lot will work at the slower speed. Also might be worth using DDR4 instead if your motherboard supports it but again you would need to replace the lot.

 

[Vanadium 50]

The SODIMM report is funny. SODIMMs are usually laptop memory, and I have never seen a motherboard that mixed DIMMs and SO-DIMMs. I'd open the case and take a look before spending money.

It is highly unlikely that this board will do DDR3 and DDR4. Adding memory will cost of order $45. Replacing memory with DDR3-2133 (the fastest the chip supports) is around $150. While the memory is 33% faster, the computer will not be, since it's not always waiting on memory.

 

[phinds]

As a side comment, if you are a power user, MORE memory is a better choice than faster memory

 

[MathematicalPhysicist]

I am adding the model number of my PC desktop memory:

ADATA AD3U1600D8GM-8 DDR3_1600(11)8GX 16_U_DIMM 10242281

Is 1600MHz 2x8GB DDR3 PC3-12800 Desktop PC DIMM Memory Ram suitable to my computer?
Thanks in advance.

 

[MikeeMiracle]

Thats looks like it should be ok based on the infomration you have provided.

 

[MathematicalPhysicist]

Thats looks like it should be ok based on the infomration you have provided.

Thanks!

 

[rcgldr]

For my desktop, I bought Kingston HyperX "Savage" 1600MHz DDR3 Non-ECC CL9 DIMM XMP (2 x 8GB kit - HX316C9SRK2/16) (red color). These have timings 9-9-9-27 at 1.5 volts. They may be hard to find now.