Memory upgrade, Legion 5 pro 7th gen

gazz

gazz

gazz

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I know there are lots of threads from people who have upgraded their memory on the Gen 7 Lenovo legion 5 pro laptop, but it's all confusing me as to what i should buy.

i've got the 'Legion 5 Pro 16IAH7H' with 16gigs of memory over 2 modules, just having the laptop sitting doing nothing is using about 8 gigs, and playtesting a new simulator game is maxing the memory out all the time, so i want/need more.

Lenovo say the max memory this laptop can take is 32 gig, but others say it will accept 64, obviously being a typical bloke, i want to fit the biggest i can get.

Looking on crucials site, it's listing 4800, 5200 and 5600 as options, i know the laptops got 4800 in it, can it take the higher number versions? ... can you tell i'm out of my depth here.

i recall when this laptop came out in march this year, some people were saying kingston memory gave them a fps boost and that, but it was something about a particular type of memory feature i believe, ?buffered or something??
 
I can't find anything here about upgrading the RAM on the Gen 7. There was a lengthy sub-thread about upgrading the RAM on Gen 6 and that used Kingston Fury RAM but obviously that's not relevant to the Gen 7.
 
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Ahh, gotya,
That must have been what i was reading.

So the memory i'm looking at is listed as:

DDR5-4800,
CL=40,
Non-ECC,
SODIMM,
262-pins,
1.1V,
2Rx8,
PC5-38400

As i believe this laptop will only run 4800, so paying the extra for the 5200 or 5600 stuff is not going to get me anything but a lighter wallet (and possibly a non booting laptop)


They sell them as 32GB sticks, i was wondering if i could buy one x 32GB stick now, and if i need more memory later, buy another and get the full 64GB this laptop can handle,
But i remember the memory in my desktop is matched sticks and had to be bought together at the same time, or something bad would happen, probably a few FPS loss on games or something?? or maybe an unstable computer??
 
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Each DDR5 ram stick runs dual channel so mixing sizes is not as big an issues as DDR4 was. You can add a 32GB now and more later although I doubt your usage will need more than 32GB tbh. I would look into what is using all the Ram especially just sat on desktop.
 
You will lose a bit of performance if you only have one DIMM but you should be able to replace one of the original DIMMs, leaving the other in place, giving you a total of 40GB. You should then get the usual better performance until you exceed the first 16GB. Lenovo is doing this on the Legion 7 Slim which has 8GB soldered with an option of an extra 8GB or 16GB. BUT I strongly recommend running something that will give you the exact configuration of the existing RAM before you buy anthing as you don't want to give it RAM that's 2Rx8 or 1Rx16 when what it wants is 1Rx8.

Okay, @MOOGLEYS' post says mixing the sizes no longer matters which is great but I would still go for the same ranks.
 
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I think from what i can find out, the crucial memory has same specs as the samsung memory in the laptop now, its 2XR8 stuff as well i believe.


Not sure if it helps, below is the data for the memory from CPU-Z,
i've only posted one stick of memory's data, the 2nd one is the same of course.

Does this give any indications about any faster / better memory i could possibly go for? or am i 'stuck with' getting pretty much the same memory i have now, just more of it...
Reason for wondering, CPU-Z is showing max memory freq. as 3200 MHz, i believe the memory i have now and am looking at is 2400MHz,

Code: 
Memory Type            DDR5
Memory Size            16 GBytes
Channels            4 x 32-bit
Memory Frequency        2394.1 MHz (1:24)
Memory Max Frequency        3200.0 MHz
CAS# latency (CL)        40.0
RAS# to CAS# delay (tRCD)    39
RAS# Precharge (tRP)        39
Cycle Time (tRAS)        76
Bank Cycle Time (tRC)        115
Row Refresh Cycle Time (tRFC)    383
Command Rate (CR)        2T
Uncore Frequency        2892.9 MHz
Memory Controller Frequency    1197.1 MHz
Host Bridge            0x4641


Memory SPD
-------------------------------------------------------------------------

DIMM #                1
    SMBus address        0x50
    Memory type        DDR5
    Module format        SO-DIMM
    Module Manufacturer(ID)    Samsung (CE00000000000000000000000000)
    SDRAM Manufacturer (ID)    Samsung (CE00000000000000000000000000)
    Size            8192 MBytes
    Max bandwidth        DDR5-4800 (2400 MHz)
    Channels        2
    Part number        M425R1GB4BB0-CQKOD
    Serial number        023AF746
    Manufacturing date    Week 48/Year 21
    Nominal Voltage        1.10 Volts
    EPP            no
    XMP            no
    AMP            no
    EXPO            no
JEDEC timings table        CL-tRCD-tRP-tRAS-tRC @ frequency
    JEDEC #1        22.0-22-22-44-66 @ 1366 MHz
    JEDEC #2        26.0-27-27-53-79 @ 1633 MHz
    JEDEC #3        28.0-29-29-57-85 @ 1766 MHz
    JEDEC #4        30.0-30-30-60-90 @ 1866 MHz
    JEDEC #5        32.0-32-32-64-96 @ 2000 MHz
    JEDEC #6        36.0-37-37-73-109 @ 2266 MHz
    JEDEC #7        40.0-39-39-77-116 @ 2400 MHz
    JEDEC #8        42.0-39-39-77-116 @ 2400 MHz
 
Ordered a 32 gig stick of memory, will use it with one of the 8 gig sticks and have 40 gigs, should be more than enough for now (famous last words)

I found out there was a bio update for the laptop,

I also forgot to mention that the 8 gigs sat 'idle' was with google chrome internet browser open,

after installing the bios update the memory usage went down to just over 7 gigs, and since i installed firefox and use that now instead of chrome, the memory usage is now just over 5 gigs with a few browser tabs open.
 
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