Member Avatar for homeboy

Hello,

I've got laptop K72Jr and I would to upgrade my RAM.
Could someone tell me if these caracteristics of new RAM is compatible for my laptop. Thanks

This is caracteristics of my previous RAM:

DIMM:               1
    SMBus address       0x50
    Memory type     DDR3
    Module format       SO-DIMM
    Manufacturer (ID)   ASint Technology (7F7F7F7F7F7FC100)
    Size            2048 MBytes
    Max bandwidth       PC3-10700 (667 MHz)
    Part number     SSZ3128M8-EDJ1D   
    Serial number       00000177
    Manufacturing date  Week 46/Year 10
    Number of banks     8
    Nominal Voltage     1.50 Volts
    EPP         no
    XMP         no
    AMP         yes

DIMM:               2
    SMBus address       0x52
    Memory type     DDR3
    Module format       SO-DIMM
    Manufacturer (ID)   ASint Technology (7F7F7F7F7F7FC100)
    Size            2048 MBytes
    Max bandwidth       PC3-10700 (667 MHz)
    Part number     SSZ3128M8-EDJ1D   
    Serial number       0000011A
    Manufacturing date  Week 46/Year 10
    Number of banks     8
    Nominal Voltage     1.50 Volts
    EPP         no
    XMP         no
    AMP         yes

This is caracteristics of my new RAM:

DIMM:               1
    SMBus address       0x50
    Memory type     DDR3
    Module format       SO-DIMM
    Manufacturer (ID)    (0000000000000000)
    Size            4096 MBytes
    Max bandwidth       PC3-10700 (667 MHz)
    Part number     
    Number of banks     8
    Nominal Voltage     1.50 Volts
    EPP         no
    XMP         no
    AMP         no

DIMM:               2
    SMBus address       0x52
    Memory type     DDR3
    Module format       SO-DIMM
    Manufacturer (ID)    (0000000000000000)
    Size            4096 MBytes
    Max bandwidth       PC3-10700 (667 MHz)
    Part number     
    Number of banks     8
    Nominal Voltage     1.50 Volts
    EPP         no
    XMP         no
    AMP         no
  • 4 Contributors
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  • Latest Post Latest Post by tigerbright

Dani AI

Generated

Short answer: the K72Jr models accept two DDR3 SO‑DIMM slots and are officially upgradable to 8 GB (two 4 GB modules). To actually use the full 8 GB you also need a 64‑bit OS. Those are the two decisive checks before you swap modules. (kingston.com)

Checklist and quick verification (do these first)

  • Confirm the exact model/variant on the bottom sticker or in BIOS/System Information so you’re checking the right spec.
  • Verify the new sticks are standard laptop DDR3 SO‑DIMMs (non‑ECC, unbuffered, 1.5 V / 204‑pin) and not server/desktop DIMMs.
  • Check the OS type (msinfo32 on Windows shows “System type”) — 32‑bit will not use more than ~4 GB.
  • Read BIOS detection immediately after install; if BIOS doesn’t see the modules, do the slot-by‑slot test below.

Useful commands to inspect model and installed modules:

# Windows (Command Prompt)
msinfo32
wmic memorychip get devicelocator, capacity, speed, partnumber, manufacturer

# Linux (root)
sudo dmidecode -t system
sudo dmidecode -t memory
free -h

Install and troubleshooting workflow

  • Power off, remove mains and battery if possible, ground yourself, seat one module at a time and boot. If a single module works, try the second.
  • If the system posts but Windows shows less RAM than installed, check for a 32‑bit OS or hardware-reserved memory (integrated GPU or BIOS remapping). (kingston.com)
  • If you see instability or the machine won’t boot, update the laptop BIOS (follow Asus’ instructions for the K72Jr) and retry; BIOS updates sometimes fix compatibility. Test suspect modules with a bootable memory tester (Memtest86 / Memtest86+) to confirm faults. (asus.com)

Notes and cautions

  • Matching capacity/speed/manufacturer is not strictly required but improves stability; mixed speeds will run at the slowest stick’s rate.
  • Keep the original sticks until the new ones are proven; return/RMA the new ones if memtest finds errors.
    As noted, OS bitness matters; and were right to point you at the OEM specs — use the steps above to verify and proceed safely. (kingston.com)

Recommended Answers

All 3 Replies

Member Avatar for Shinedevil

You need to make sure your computer is 64bit, otherwise... there's no reason to upgrade past 4GB (without kernel mods, which, hell, you wouldn't be asking for our help if you knew how to create your own custom kernel)
But judging from the specs you've given us, I think it should be compatible being that they are DDR3, PC3-10700 (667 MHz)
AMP is something I wouldn't worry about though that's not going to make your ram incompatible.

Member Avatar for tobyjones8

Best to search up what kind of motherboard or PC you have on Google to see what type of RAM it takes. They seem compatible from the info that you've posted though, but don't quote me on it.

Member Avatar for tigerbright

Hi , you can consult the laptop oem spec as this notes pertinent memory specs (although regarding internal speed , not the only supported options)

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