Unable to dual channel

[Jazyk8]

Greetings,

I'm trying to get dual channel from the following without success:

System Manufacturer: LENOVO
System Model: 80M8
BIOS: Phoenix BIOS SC-T v2.1
Processor: AMD A8-7410 APU with AMD Radeon R5 Graphics (4 CPUs), ~2.2GHz
Memory: 8192MB RAM
Available OS Memory: 7074MB RAM

Help will be appreciated. Thank you.

 

[Barty1884]

You're using slots 1&2, whereas a 'channel' would usually require slots 1&3 or 2&4 populated. (Even if your board only has 2 slots, they'll be recognized as 1&3 or 2&4 if the board is capable of dual-channel). Usually the DIMM slots are color-coded?

The fact that you do not have a matching RAM 'kit' (sold together), and not even the same brand/model may be playing part of it also, but I would ensure you're populating the correct slots first of all.

One lists "single" rank and the other "dual", which makes me think there's something in that aspect too, but that's a new one to me, so I can't shed any light on it.

 

[Snipergod87]

You're using slots 1&2, whereas a 'channel' would usually require slots 1&3 or 2&4 populated. (Even if your board only has 2 slots, they'll be recognized as 1&3 or 2&4 if the board is capable of dual-channel). Usually the DIMM slots are color-coded?

The fact that you do not have a matching RAM 'kit' (sold together), and not even the same brand/model may be playing part of it also, but I would ensure you're populating the correct slots first of all.

One lists "single" rank and the other "dual", which makes me think there's something in that aspect too, but that's a new one to me, so I can't shed any light on it.

It looks to be a laptop which only has two SO-DIMM's.
I am thinking the difference in RAM modules is causing the problem like the single and dual ranking

 

[Jazyk8]

You're using slots 1&2, whereas a 'channel' would usually require slots 1&3...

Yes, This notebok only has 2 slots. What you said could be true, i'll see if others can confirm.

 

[Barty1884]

Very true! Good catch.

Even laptops should be recognized as slots 1&3 or 2&4.......assuming the board is capable of dual channel.
a G51 is new enough though, I'd be very surprised if it didn't.

It must be down to the differences between the modules.

 

[Jazyk8]

The Puma cores use the same microarchitecture as Jaguar, and inherits the design:

Integrated single channel memory controller supporting 64bit DDR3L

so that's that