4GB RAM in place, but only 2GB showing in BIOS

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  1. Posts : 6
    Win 7 Ultimate - 32bit
       #1

    4GB RAM in place, but only 2GB showing in BIOS


    I had laptop I needed to fix from a while back..

    I have installed Win7 32bit on it..

    I know the laptop came with 2 x 2gb RAM..

    Under My Computer and in BIOS it is showing here is only 2GB RAM instead of 4GB.

    I tried re seating and swapping the RAM around but still shows the same.

    Any advice for me please..
    :)
      My Computer


  2. Posts : 10
    Windows 7 Professional 64 bit
       #2

    32 bit software can only recognize 4 GB of ram total. Video ram counts in that number. I installed extra ram in my first PC that was 64 bit capable and it showed some weird number less that the 6 GB (actually a weird number less than 4 GB) I had installed. After doing a bunch of reading I discovered that it was a 32 Bit software issue.

    Hope that makes sense.
      My Computer


  3. Posts : 6
    Win 7 Ultimate - 32bit
    Thread Starter
       #3

    Ok, i see..I assumed this came with 4gb.. Toshiba Satelite C660-10D
    I really thought it came with 4gb..

    So is one of these sticks no use for this laptop then do you know?
      My Computer


  4. Posts : 18,415
    windows 7 home 64bit
       #4

    Hi there you should check each stick individually .. One at a time in each slot
      My Computer


  5. Posts : 87
    Windows 7 Ultimate x64
       #5

    64 bits will always show more. You have 32 bits so all you need is 4, i have 4GB and it only shows 2.9. Unless you plan on adding more RAM and 64bits then you're fine.
      My Computer


  6. Posts : 1,872
    Windows 10 Pro x64, Windows 8.1 Pro x64, Windows 7 Ultimate x64 SP1,
       #6

    user31 said:
    64 bits will always show more. You have 32 bits so all you need is 4, i have 4GB and it only shows 2.9. Unless you plan on adding more RAM and 64bits then you're fine.
    While a 32 bit operating system will show less that 4GB, the BIOS should show all 4 unless there is a hardware limit and I do not believe that is the case here.

    You should do a Maxie suggests and test each stick separately
      My Computer


  7. Posts : 25,847
    Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64
       #7

    Could you post on of these.

    4GB RAM in place, but only 2GB showing in BIOS-ram-usage.png
      My Computer


  8. Posts : 1,449
    Windows 7 ultimate 64-bit
       #8

    also; generally speaking for the most part; if im not mistaken; 32 bit wont recognize as much ram as 64 bit will. I might also do what maxie mentioned; and test each stick of ram one at a time to see if any one is faulty at all.
      My Computer


  9. Posts : 87
    Windows 7 Ultimate x64
       #9

    matts6887 said:
    also; generally speaking for the most part; if im not mistaken; 32 bit wont recognize as much ram as 64 bit will. I might also do what maxie mentioned; and test each stick of ram one at a time to see if any one is faulty at all.
    That's what I was saying in my post initially. That's a good idea though; check one at a time and rule that out. I use Speccy by Piriform; same people that make CCleaner. This is a txt version of what my RAM specs show. Check out the bold section. I had 64 bits Ultimate on my laptop, however, I reverted back to 32bits because I didn't feel like upgrading the RAM. It will show all 4GB in 64bit.

    RAM
    Memory slots
    Total memory slots 2
    Used memory slots 2
    Free memory slots 0
    Memory
    Type DDR2
    Size 4096 MBytes
    Channels # Dual
    DRAM Frequency 399.0 MHz
    CAS# Latency (CL) 6 clocks
    RAS# to CAS# Delay (tRCD) 6 clocks
    RAS# Precharge (tRP) 6 clocks
    Cycle Time (tRAS) 18 clocks
    Physical Memory
    Memory Usage 31 %
    Total Physical 2.91 GB
    Available Physical 1.98 GB
    Total Virtual 5.83 GB
    Available Virtual 4.84 GB
    SPD
    Number Of SPD Modules 2
    Slot #1
    Type DDR2
    Size 2048 MBytes
    Manufacturer Elpida
    Max Bandwidth PC2-6400 (400 MHz)
    Part Number EBE21UE8ACUA-8G-E
    Serial Number 25F9EE7B
    Week/year 33 / 08
    JEDEC #3
    Frequency 400.0 MHz
    CAS# Latency 6.0
    RAS# To CAS# 6
    RAS# Precharge 6
    tRAS 18
    tRC 24
    Voltage 1.800 V
    JEDEC #2
    Frequency 333.3 MHz
    CAS# Latency 5.0
    RAS# To CAS# 5
    RAS# Precharge 5
    tRAS 16
    tRC 21
    Voltage 1.800 V
    JEDEC #1
    Frequency 266.7 MHz
    CAS# Latency 4.0
    RAS# To CAS# 4
    RAS# Precharge 4
    tRAS 12
    tRC 16
    Voltage 1.800 V
    Slot #2
    Type DDR2
    Size 2048 MBytes
    Manufacturer Elpida
    Max Bandwidth PC2-6400 (400 MHz)
    Part Number EBE21UE8ACUA-8G-E
    Serial Number 25F9EE7B
    Week/year 33 / 08
    JEDEC #3
    Frequency 400.0 MHz
    CAS# Latency 6.0
    RAS# To CAS# 6
    RAS# Precharge 6
    tRAS 18
    tRC 24
    Voltage 1.800 V
    JEDEC #2
    Frequency 333.3 MHz
    CAS# Latency 5.0
    RAS# To CAS# 5
    RAS# Precharge 5
    tRAS 16
    tRC 21
    Voltage 1.800 V
    JEDEC #1
    Frequency 266.7 MHz
    CAS# Latency 4.0
    RAS# To CAS# 4
    RAS# Precharge 4
    tRAS 12
    tRC 16
    Voltage 1.800 V
      My Computer


  10. Posts : 4,161
    Windows 7 Pro-x64
       #10

    I don't put much faith in Speccy unless it's verified. I question the ability of it to analyze the data reported by hardware or if it makes it up. In this case, the serial numbers of the memory modules. (They are the same.)

    Post an image of Resource Manager Monitor from the Memory tab as Layback Bear requested so we can see where it's allocated.
      My Computer


 
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