4GB 2PCS 2GB DDR2 667 667MHz PC2-5300 200Pin Laptop Notebook SODIMM Memory RAM

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$11.00 /pc

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(10000 available)

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things to know before buying:

1.Before you order, make sure the RAM is compatible with your motherboard/CPU. This is the RAM suitable for notebook computers. but it is not suitable for desktop

computers or servers.

2. Please confirm what RAM you can use before buying. The safest way is to use software testing, such as CPU-Z. If you don'know how to judge, please send a test screenshot or a photo of your RAM to customer nservce

3.How should you choose DDR3 or DDR3L?

A. If your RAM label says PC3L-12800, with "L" then you should buy DDR3L

B. Please use the hardware test software"CPU-Z"to u detect, you can judge by the"Voltage" of "SPD" ,if the voltage is 1.35V, then you should choose DDR3L, if yur voltage is 1.5V, then you should Purchase DDR3

C. You can search for your CPU,if your CPU is a low-voltage CPU(usually a CPU with a U letter suffix, such as i5-4200U), then you should buy DDR3L,

4.if your own RAM is 2GB DDR3 1333 and you want to buy a 8GB RAM,please confirm whether your laptop supports it. You can search for your computer model on Google, or search to confirm the maximum amount of RAM the computer supports Method, or ask customer service.

How To Check Maximum RAM Capacity ?(Easiest Way)

A. In the search box, search for cmd and click Run as administrator. This will open the command prompt.

B. Once command prompt is opened, type wmic memphysical get maxcapacity and hit enter. There, it will show the maximum RAM capacity your notebook's motherboard can support.

The capacity is shown as Kilobytes, so you have to convert it ot Gigabytes by dividing the number provided in the report by 1,048,576.

5. PC3-10600S represents the bandwidth of this RAM instead of its frequency

The corresponding frequency of PC3-12800S is DDR3 1600MHz

The corresponding frequency of PC3L-12800S is DDR3L 1600MHz

The corresponding frequency of PC3-10600S is DDR3 1333MHz

The corresponding frequency of PC3-8500S is DDR3 1066MHz

You can choose RAM according to the label on your RAM, but please do not confuse the two concepts of bandwidth and frequency.

For example: You bought DDR3 1333MHz, and the RAM label you received says "PC3-10600S", and then you ask me, "Why are you sending me 10600 instead of 1333? Now you should know that what I sent you is DDR3 1333MHz.

6. DDR stands for Double Data Rate. the data rate, or effective speed of the RAM is twice the actual clock speed,So when you see 400 MHz(clock speed) in CPU-Z, but data is transferring it were running at 800 MHz, Therefore,

DDR2 667mhz=333mhzx2,

DDR2 800mhz=400mhzx2,

DDR3 1066mhz=533mhzx2,

DDR3 1333mhz=667mhzx2,

DDR3 1600mhz=800mhzx2

7. if ram refused to boot, can try Clean the RAM and RAM slots

A. Clean the contacts with an eraser

Lay the RAM module down on a flat clean surface. Use the pencil eraser in short strokes all along all of the contacts back and forth until the eraser end is clean.After you have given the contacts a good clean with the eraser, take a cloth and keep wiping the contacts until it feels smooth or once you are convinced that there are no traces of eraser filings left.

B. Clean the RAM slots

Clean the RAM slots Do not use anything else but some compressed air to clean out the RAM slots. Keep blowing them out until there is no debris of any kind left inside them. Use a good light source, and make sure they are perfectly clean.

8. What's the maximum memory size for Windows 32 bit and Windows 64 ?

Due to the operating system limitation, the actual memory size may be less than 4GB for the reservation for system usage under Windows ® 32-bit OS. On Windows 8 32-Bit OS you can only use 3.5GB for example. For Windows ® 64-bit OS with 64-bit CPU, there is no such limitation.

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