ACER A315-31 RAM upgrade

nisankh

I am confused at Acer this notebook , when i  dumped computer's DMI (some say SMBIOS ) table contents in a human-readable format i can see it says maximum RAM up-gradable to 16GB . But service center says it can upgraded to 4 GB as my present physical memory is 2GB . I am sure that this table contents are reliable as it from SMBIOS data . do acer allow 16 GB maximum ram upgrade

Proof of decoding the DMI tables ( ram section is in 0x000B, DMI type 16, 23 bytes Physical Memory Array )

The output is as follows

Getting SMBIOS data from sysfs.
SMBIOS 3.0.0 present.
Table at 0x78762000.

Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
    Vendor: Insyde Corp.
    Version: V1.09
    Release Date: 10/17/2017
    Address: 0xE0000
    Runtime Size: 128 kB
    ROM Size: 4608 kB
    Characteristics:
        PCI is supported
        BIOS is upgradeable
        BIOS shadowing is allowed
        Boot from CD is supported
        Selectable boot is supported
        EDD is supported
        Japanese floppy for NEC 9800 1.2 MB is supported (int 13h)
        Japanese floppy for Toshiba 1.2 MB is supported (int 13h)
        5.25"/360 kB floppy services are supported (int 13h)
        5.25"/1.2 MB floppy services are supported (int 13h)
        3.5"/720 kB floppy services are supported (int 13h)
        3.5"/2.88 MB floppy services are supported (int 13h)
        8042 keyboard services are supported (int 9h)
        CGA/mono video services are supported (int 10h)
        ACPI is supported
        USB legacy is supported
        BIOS boot specification is supported
        Targeted content distribution is supported
        UEFI is supported
    BIOS Revision: 1.9
    Firmware Revision: 1.4

Handle 0x0001, DMI type 1, 27 bytes
System Information
    Manufacturer: Acer
    Product Name: Aspire A315-31
    Version: V1.09
    Serial Number: NXGNTSI003737296637600
    UUID: B13F561B-A367-424B-996F-A81E84E2B29E
    Wake-up Type: Power Switch
    SKU Number: 0000000000000000
    Family: Aspire 3

Handle 0x0002, DMI type 2, 17 bytes
Base Board Information
    Manufacturer: APL
    Product Name: Ivysaur_AP
    Version: V1.09
    Serial Number: NBGNT1100L737296637600
    Asset Tag: Type2 - Board Asset Tag
    Features:
        Board is a hosting board
        Board is replaceable
    Location In Chassis: Type2 - Board Chassis Location
    Chassis Handle: 0x0003
    Type: Motherboard
    Contained Object Handles: 0

Handle 0x0003, DMI type 3, 24 bytes
Chassis Information
    Manufacturer: Acer
    Type: Notebook
    Lock: Not Present
    Version: Chassis Version
    Serial Number: Chassis Serial Number
    Asset Tag:                      
    Boot-up State: Safe
    Power Supply State: Safe
    Thermal State: Safe
    Security Status: None
    OEM Information: 0x00000000
    Height: Unspecified
    Number Of Power Cords: 1
    Contained Elements: 0
    SKU Number: <BAD INDEX>

Handle 0x0004, DMI type 4, 48 bytes
Processor Information
    Socket Designation: U3E1
    Type: Central Processor
    Family: Celeron
    Manufacturer: Intel(R) Corporation
    ID: C9 06 05 00 FF FB EB BF
    Signature: Type 0, Family 6, Model 92, Stepping 9
    Flags:
        FPU (Floating-point unit on-chip)
        VME (Virtual mode extension)
        DE (Debugging extension)
        PSE (Page size extension)
        TSC (Time stamp counter)
        MSR (Model specific registers)
        PAE (Physical address extension)
        MCE (Machine check exception)
        CX8 (CMPXCHG8 instruction supported)
        APIC (On-chip APIC hardware supported)
        SEP (Fast system call)
        MTRR (Memory type range registers)
        PGE (Page global enable)
        MCA (Machine check architecture)
        CMOV (Conditional move instruction supported)
        PAT (Page attribute table)
        PSE-36 (36-bit page size extension)
        CLFSH (CLFLUSH instruction supported)
        DS (Debug store)
        ACPI (ACPI supported)
        MMX (MMX technology supported)
        FXSR (FXSAVE and FXSTOR instructions supported)
        SSE (Streaming SIMD extensions)
        SSE2 (Streaming SIMD extensions 2)
        SS (Self-snoop)
        HTT (Multi-threading)
        TM (Thermal monitor supported)
        PBE (Pending break enabled)
    Version: Intel(R) Celeron(R) CPU N3350 @ 1.10GHz
    Voltage: 0.9 V
    External Clock: 100 MHz
    Max Speed: 1100 MHz
    Current Speed: 1100 MHz
    Status: Populated, Enabled
    Upgrade: Other
    L1 Cache Handle: 0x0006
    L2 Cache Handle: 0x0007
    L3 Cache Handle: Not Provided
    Serial Number: To Be Filled By O.E.M.
    Asset Tag: To Be Filled By O.E.M.
    Part Number: To Be Filled By O.E.M.
    Core Count: 2
    Core Enabled: 2
    Thread Count: 2
    Characteristics:
        64-bit capable
        Multi-Core
        Execute Protection
        Enhanced Virtualization
        Power/Performance Control

Handle 0x0005, DMI type 7, 19 bytes
Cache Information
    Socket Designation: L1 Cache
    Configuration: Enabled, Not Socketed, Level 1
    Operational Mode: Write Back
    Location: Internal
    Installed Size: 24 kB
    Maximum Size: 24 kB
    Supported SRAM Types:
        Synchronous
    Installed SRAM Type: Synchronous
    Speed: Unknown
    Error Correction Type: Parity
    System Type: Data
    Associativity: Other

Handle 0x0006, DMI type 7, 19 bytes
Cache Information
    Socket Designation: L1 Cache
    Configuration: Enabled, Not Socketed, Level 1
    Operational Mode: Write Back
    Location: Internal
    Installed Size: 32 kB
    Maximum Size: 32 kB
    Supported SRAM Types:
        Synchronous
    Installed SRAM Type: Synchronous
    Speed: Unknown
    Error Correction Type: Parity
    System Type: Instruction
    Associativity: 8-way Set-associative

Handle 0x0007, DMI type 7, 19 bytes
Cache Information
    Socket Designation: L2 Cache
    Configuration: Enabled, Not Socketed, Level 2
    Operational Mode: Write Back
    Location: Internal
    Installed Size: 1024 kB
    Maximum Size: 1024 kB
    Supported SRAM Types:
        Synchronous
    Installed SRAM Type: Synchronous
    Speed: Unknown
    Error Correction Type: Single-bit ECC
    System Type: Unified
    Associativity: 16-way Set-associative

Handle 0x0008, DMI type 10, 6 bytes
On Board Device Information
    Type: Video
    Status: Enabled
    Description: Video Graphics Controller

Handle 0x0009, DMI type 11, 5 bytes
OEM Strings
    String 1: Acer System
    String 2: OemString2
    String 3: OemString3
    String 4: OemString4
    String 5: OemString5
    String 6: OemString6

Handle 0x000A, DMI type 12, 5 bytes
System Configuration Options
    Option 1: ConfigOptions1
    Option 2: ConfigOptions2
    Option 3: ConfigOptions3
    Option 4: ConfigOptions4
    Option 5: ConfigOptions5
    Option 6: ConfigOptions6

Handle 0x000B, DMI type 16, 23 bytes
Physical Memory Array
    Location: System Board Or Motherboard
    Use: System Memory
    Error Correction Type: None
    Maximum Capacity: 16 GB
    Error Information Handle: No Error
    Number Of Devices: 2

Handle 0x000C, DMI type 17, 40 bytes
Memory Device
    Array Handle: 0x000B
    Error Information Handle: No Error
    Total Width: 8 bits
    Data Width: 8 bits
    Size: 2048 MB
    Form Factor: DIMM
    Set: None
    Locator: ChannelA-DIMM0
    Bank Locator: BANK 0
    Type: DDR3
    Type Detail: Synchronous
    Speed: 1333 MT/s
    Manufacturer: SK Hynix
    Serial Number: 00000000
    Asset Tag: 9876543210
    Part Number:  .      .      ..
    Rank: Unknown
    Configured Clock Speed: 1333 MT/s
    Minimum Voltage: Unknown
    Maximum Voltage: Unknown
    Configured Voltage: Unknown

Handle 0x000D, DMI type 19, 31 bytes
Memory Array Mapped Address
    Starting Address: 0x00000000000
    Ending Address: 0x0007FFFFFFF
    Range Size: 2 GB
    Physical Array Handle: 0x000B
    Partition Width: 4

Handle 0x000E, DMI type 20, 35 bytes
Memory Device Mapped Address
    Starting Address: 0x00000000000
    Ending Address: 0x0007FFFFFFF
    Range Size: 2 GB
    Physical Device Handle: 0x000C
    Memory Array Mapped Address Handle: 0x000D
    Partition Row Position: Unknown
    Interleave Position: 1
    Interleaved Data Depth: 1

Handle 0x000F, DMI type 131, 64 bytes
OEM-specific Type
    Header and Data:
        83 40 0F 00 00 00 00 00 00 00 00 00 00 00 00 00
        00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
        00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
        00 00 00 00 00 00 00 00 76 50 72 6F 00 00 00 00

Handle 0x0010, DMI type 170, 74 bytes
Acer Hotkey Function
    Function bitmap for Communication Button: 0x0801
        WiFi: Yes
        3G: No
        WiMAX: No
        Bluetooth: Yes
    Function bitmap for Application Button: 0x0000
    Function bitmap for Media Button: 0x007f
    Function bitmap for Display Button: 0x000f
    Function bitmap for Others Button: 0x0006
    Communication Function Key Number: 1

Handle 0x0011, DMI type 171, 54 bytes
OEM-specific Type
    Header and Data:
        AB 36 11 00 04 F2 04 E0 B5 08 CA 04 15 30 01 86
        80 85 5A 02 EC 10 87 52 03 EC 10 87 52 05 86 80
        98 5A 07 8C 16 42 00 0B 00 00 00 00 0D 00 00 00
        00 16 00 00 00 00

Handle 0x0012, DMI type 172, 12 bytes
OEM-specific Type
    Header and Data:
        AC 0C 12 00 02 37 02 01 00 04 01 00

Handle 0x0013, DMI type 248, 10 bytes
OEM-specific Type
    Header and Data:
        F8 0A 13 00 00 02 6C 00 00 00

Handle 0xFEFF, DMI type 127, 4 bytes
End Of Table

brummyfan2

Hi,
These models come with on-board memory and it means the memory modules are soldered to the motherboard, so there's no slots for upgrade.

nisankh

This is up-gradable , i have done it with acer service center . they have confirmed that it has one empty slot and one on board fixed memory module of 2GB  , they have shown me to read such output to as in the output it shows two available in Physical Memory array as Two means it has two devices available for Physical memory installation