Hi,

I'm going to upgrade my ram on Lenovo G50-30, but it is difficult to find compatible one. Can you answer what properties of ram should be? I have stoped on Micron DDR3 1600 8GB (CT102464BF160B). It has CL11 timing and 1.35 voltage needed. Is it compatible with my laptop?

Thanks for the answer.

Good morning,

I have a similar question, please.

For a Lenovo G50-30 Model 80G022MIX, there are only one or two SO-DIMM slots available?

Windows Task Manager under the Performance / Memory sections shows Used slots '1 of 2 '  Speed 1333 Mhz

I am confused whether physically two SO-DIMMs modules could be installed and whether the 128-bit dual channel would be available or not. According to other sources this model provides:

Maximum internal memory: 8 GB
Maximum internal memory (64-bit): 8 GB
Memory clock speed: 1333 MHz
Memory form factor: SO-DIMM
Memory slots: 1x SO-DIMM

So which are the available options about the memory and activating the dual channel, please? Apparently the DRAM frequency is 666.7Mhz, only 1 slot is populated but Channel # shows 'Dual'.  As stated above, speed is detected at 1333 Mhz as the dual channel is working even only with one module.

Thank you!

Greetings gio6969, 

Checking sample boards from parts lookup shows single slot for the ram.

https://pcsupport.lenovo.com/us/en/products/laptops-and-netbooks/lenovo-g-series-laptops/g50-30-notebook-lenovo/80g0/80g022mix/parts/display/model?linkTrack=Caps%3ABody_SearchProduct&searchType=5&keyWordSearch=80G022MIX

It may be best that you have it checked physical to confirm. Dual channeling is a technology that can be done by the ram even if there is only one physical memory stick.

Regards,

spidey101

Greetings spidey101!

Thank you for your reply.

Currently I cannot open the G50-30 notebook in order to inspect the number of slots.

Anyway an issue remains:  how could that utility actually show a dual channel setup with a single module on this Levovo notebook?  (actually 3 different testing software gave back the same status).

Theory says a single channel makes use of a 64-bit device width, which basically means that 64 bits of data are transferred at each transfer cycle. Thus, theoretically, bandwidth can be calculated as:

bandwidth = DDR clock rate x data bus width / 8

So, for a single channel DDR3-1333 Memory (as is this case), the theoretical bandwidth comes out to be

Bandwidth in Single Channel = 1333 x 64 / 8 = 10,664 MB/s or 10.6 GB/s

While a Bandwidth in Dual Channel = 1333 x (64 x 2) / 8 = 21,328 MB/s or 21.3 GB/s

Running a benchmark cache and memory test on this notebook the results are as follows (attached is a screenshot):

Memory Read 8389 MB/s

Write 7924 MB/s

Copy 7630 MB/s

These values are clearly coherent in the real world with a single channel configuration -- not dual. Therefore it appears the Lenovo Lancer 5A6 motherboard is performing a trick in order to give back a dual channel status while the performance - with that DDR3-1333 memory module - is single channel rated.

You affirmed that "Dual channeling is a technology that can be done by the ram even if there is only one physical memory stick.". Surely this test does not  match the statement.

Could you please give us an example? Thank you.

Greetings gio6969, 

Each model does have different variants and capabilities. 

N2830 / N3530 models: 8GB max / PC3-12800 1600MHz DDR3L, non-parity,  one 204-pin SO-DIMM socket, system automatically clocks down for 1333MHz DDR3 memory controller

Other models: 16GB max / PC3-12800 1600MHz DDR3L, non-parity, dual-channel capable, two 204-pin SO-DIMM sockets

These performance are processed not only with a dual capable ram sticks but more on the board chips and firmware automatically. The CPU load is lesser than dual and performance is not so remarkable in less applications running within the capability of the machine.

Do consider more reviews on benchmark performances of single vs. dual channel ram in actual studies.

Regards,

spidey101