Question ASUS A540L Laptop RAM compatibility ?

Oct 21, 2021
Hello guys,

I'm here to ask for your advice.

Recently I tried to upgrade the RAM on my ASUS A540L laptop.
After searching the web I found the following reference:

The ASUS A540L Laptop takes the DDR3L PC3L-12800 1600MHz Non-ECC SODIMM memory type, and comes installed with 4GB (Soldered) memory.
For that reason, I decided to purchase a RAM that I expected to be a compatible with my laptop considering the compatibility statement referenced above.

Timetec Hynix IC 8GB DDR3L 1600MHz PC3-12800 Unbuffered Non-ECC 1.35V CL11 2Rx8 Dual Rank 204 Pin SODIMM Ordinateur Portable Mémoire RAM Module Upgrade (8GB)

The issue is,, after installing the RAM , the Laptop freezes during the Windows' initial loading spinner.

Now my question is:
(1) Did I make a mistake in my RAM choice?
(2) It's probably a RAM issue ?

(2) has happened to me in past, that's why I'm considering that possibility.

Thank you all for your help.


Hey there,

So although your existing ram may be 1600mhz, and the same with the new ones, that's not the whole story. The voltage and timings (in this case CL and 4 others) have to also match. If they do not match, then it's very likely they will not work together.

I'd suggest returning the ram you bought for a refund.
Oct 21, 2021
@keith12 thank you for your advice.
Do you known how can I check the existing RAM timings / voltage?
I think since this is a laptop, it has to be a 1.35V (don't even know if there are other voltages for laptops)
Oct 21, 2021
Hello guys,

Since I'm still struggling to upgrade my laptop's RAM, I'm back to get some adviced.
I returned my previous RAM and got a new one from corsair.

CMSO8GX3M1C1600C11 Value Select 8GB (1x8GB) DDR3 1600Mhz CL11

I generated a HWiNFO64 report to verify the RAM compatibility and everything seems ok.
Can't understand why my laptop's get's stucked in the initial windows 10 load spinner.

Please, any advices?

Intel Core i3-4005U

[General Information]
Processor Name:Intel Core i3-4005U
Original Processor Frequency:1700.0 MHz
Original Processor Frequency [MHz]:1700
CPU ID:00040651
CPU Brand Name:Intel(R) Core(TM) i3-4005U CPU @ 1.70GHz
CPU Vendor:GenuineIntel
CPU Stepping:D0
CPU Code Name:Haswell ULT
CPU Technology:22 nm
CPU Thermal Design Power (TDP):15.0 W
CPU Thermal Design Current (TDC):32.0 A
CPU Power Limits (Max):Power = Unlimited, Time = Unlimited
CPU Power Limit 1 - Long Duration:(15.00 W) (28.00 sec) [Locked]
CPU Power Limit 2 - Short Duration:(25.00 W) (2.44 ms) [Locked]
Configurable TDP Level 1 (Down):11.50 W (Unlimited range), 800 MHz
Current Configurable TDP Level:Nominal (Legacy) [Unlocked]
CPU Max. Junction Temperature (Tj,max):100 °C
CPU Type:Production Unit
CPU Platform:BGA1168
Microcode Update Revision:25
Number of CPU Cores:2
Number of Logical CPUs:4
[Operating Points]
CPU MFM (LowPower):800.0 MHz = 8 x 100.0 MHz
CPU LFM (Minimum):800.0 MHz = 8 x 100.0 MHz
CPU HFM (Base):1700.0 MHz = 17 x 100.0 MHz
CPU Turbo Max:1700.0 MHz = 17 x 100.0 MHz [Unlocked]
Turbo Ratio Limits:17x (1-4c)
CPU Current:1696.1 MHz = 17 x 99.8 MHz @ 0.7920 V
LLC/Ring Maximum:1700.0 MHz = 17.00 x 100.0 MHz
LLC/Ring Current:1696.1 MHz = 17.00 x 99.8 MHz
CPU Bus Type:OPI
PCI-Express Current Clock:99.8 MHz = 1.00 x 99.8 MHz

Computer Brand Name:ASUS X540LJ
Motherboard Model:ASUS X540LJ
Motherboard Chipset:Intel Lynx Point-LP (Mainstream)
Motherboard Slots:2xPCI Express x1, 1xPCI Express x4
PCI Express Version Supported:v2.0
USB Version Supported:v3.0
[PCH Features]
SATA Port 3 6 Gb/s:Not Supported
SATA Port 2 6 Gb/s:Not Supported
SATA Ports 2 and 3:Not Supported
RAID Capability:Not Supported
Intel PCI Express Storage Technology:Not Supported
USB Redirect (USBr):Not Supported
PCH PEG/DMI Ratio:5/5
BIOS Manufacturer:American Megatrends
BIOS Date:10/13/2015
BIOS Version:X540LJ.203
Super-IO/LPC Chip:Unknown
Trusted Platform Module (TPM) Chip:Hardware TPM, version v2.0

[General information]
Total Memory Size:4 GBytes
Total Memory Size [MB]:4096
[Current Performance Settings]
Maximum Supported Memory Clock:800.0 MHz
Current Memory Clock:798.2 MHz (8 : 1 ratio)
Current Timing (tCAS-tRCD-tRP-tRAS):11-11-11-28
Memory Channels Supported:2
Memory Channels Active:1
Command Rate:1T
Read to Read Delay (tRDRD_SG/TrdrdScL) Same Bank Group:4T
Read to Read Delay (tRDRD_DG/TrdrdScDlr) Different Bank Group:6T
Read to Read Delay (tRDRD_DD) Different DIMM:6T
Write to Write Delay (tWRWR_SG/TwrwrScL) Same Bank Group:4T
Write to Write Delay (tWRWR_DG/TwrwrScDlr) Different Bank Group:7T
Write to Write Delay (tWRWR_DD) Different DIMM:7T
Read to Write Delay (tRDWR_SG/TrdwrScL) Same Bank Group:11T
Read to Write Delay (tRDWR_DG/TrdwrScDlr) Different Bank Group:11T
Read to Write Delay (tRDWR_DD) Different DIMM:11T
Write to Read Delay (tWRRD_SG/TwrrdScL) Same Bank Group:20T
Write to Read Delay (tWRRD_DG/TwrrdScDlr) Different Bank Group:4T
Write to Read Delay (tWRRD_DD) Different DIMM:4T
Read to Precharge Delay (tRTP):6T
Write to Precharge Delay (tWTP):24T
Write Recovery Time (tWR):23T
RAS# to RAS# Delay (tRRD):5T
Refresh Cycle Time (tRFC):208T
Four Activate Window (tFAW):24T

Memory Device
Total Width:64 bits
Data Width:64 bits
Device Size:4096 MBytes
Device Form Factor:SODIMM
Device Locator:ChannelA-DIMM0
Bank Locator:BANK 0
Device Type:DDR3 SDRAM
Device Type Detail:Synchronous
Memory Speed:1600 MHz
Serial Number:00000000
Part Number:M471B5173EB0-YK0
Asset Tag:9876543210

Memory Device
Total Width:0 bits
Data Width:0 bits
Device Size:0 MBytes
Device Form Factor:DIMM
Device Locator:ChannelB-DIMM0
Bank Locator:BANK 2
Device Type:Unknown
Device Type Detail:
Serial Number:
Part Number:
Asset Tag:

Memory Array Mapped Address
Starting Address:00000000
Ending Address:003FFFFF
Partition Width:2

Memory Device Mapped Address
Starting Address:00000000
Ending Address:003FFFFF
Partition Row Position:Unknown
Interleave Position:Unknown
Interleave Data Depth:Unknown