Things to keep in mind when upgrading a DDR3 memory based laptop

Might you be out searching for DDR3 memory for a laptop but somewhat dazzled by the display of information and misinformation out there making your laptop memory upgrade all the more tricky? If we’ve guessed correctly then here’s a quick rundown on key facts of DDR3 laptop memory to get your on the right track.

What is DDR3 memory for a laptop?

DDR3 laptop memory is as of 2011 the latest memory technology to greet modern laptops. DDR3 is an evolution to its predecessor, DDR2 laptop memory, much in the same way as the latter was the successor to DDR and SDRAM laptop memory.

DDR3 laptop memory is faster than DDR2 due to doubling the data bus speed, an enhancement first introduced with DDR2. In DDR2 laptop memory the data bus speed ran at double the speed of the memory chips present on the DDR2 SODIMM memory module. DDR3 takes the same data bus, however runs it at twice its original frequency. Consequently, in DDR3 laptop memory, the data bus operates at four times the speed of the individual memory chips. In comparison to DDR2 laptop memory, DDR3 is capable of achieving the same memory bandwidth as DDR2 but in doing so only needs to run at half its frequency. This efficiency coupled with support for higher frequencies contribute to superior performance to that of DDR2 or older laptop memory.

Does my laptop really require DDR3 memory?

DDR3 memory started gaining popularity since its advent in late 2008. The type of memory for a laptop your own laptop requires primarily depends on the year it was manufactured. The build date (very often closely related to the purchase date and typically found on a sticker on its base or within its documentation) is a further indication.

A supportive indicator for identifying the type of Laptop Ram your system requires is to run some diagnostic software.

A non-problematic method to find this out is to download and run software such as CPU-Z – it’s a free application which can be easily found via Google. Once downloaded and launched, click on its ‘Memory’ tab and subsequently also the ‘SPD’ tab. This will inform you whether your laptop uses DDR3 memory, its specification and timings. If you notice it stating DDR2 then write down the type of DDR3, examples include PC3-6400, PC2-4200, PC3-8500 and PC2-10600. Next, write down an indication that this is the type of DDR3 memory for a laptop you need to buy.

Great, I need DDR3 memory for a laptop, but how much can I install?

DDR3 laptops support between 4GB and 16GB of RAM. Some, usually older DDR3 laptops have the memory controller featured within what’s known as a northbridge chipset. Others, usually newer DDR3 laptops have a memory controller present within the CPU (Central Processing Unit) thus processor die. The exact amount supported by your laptop will depend on either – regardless whether the memory controller is external or internal to the processor.

If you would like to upgrade to the maximum supported amount and wish to find out whether this is 16GB then a quick way is to check how many SODIMM memory slots your laptop contains. If it’s four (some may be located on the underneath side of your laptop, others under the keyboard) then the maximum will be 16GB. Similarly, if your laptop only supports two SODIMM memory slots then with a high degree of accuracy you can expect your laptop to support up to 8GB RAM maximum.

Also, take into account that in order to utilise more than 4GB or more of RAM, you need to be running a 64bit Operating System such as Windows XP Professional x64 (potentially problematic when running on laptops due to limited driver support), Windows Vista x64 (any edition), Windows 7 x64 (any edition) or any alternative such as a suitable release of Linux or MacOS.

I’m ready to buy, so it’s i.e. PC3-8500 DDR3 I need and the rest will be problem free?

The specification of DDR3 memory for a laptop you need is whatever was reported by CPU-Z as noted above. If it stated PC3-8500 then yes, you will require DDR3 memory otherwise known as PC3-8500 DDR3. If it displayed PC3-6400 then you can still purchase PC3-8500 or PC3-10600 DDR3 in view of the fact that DDR3 computer memory is inherently backwards compatible. Meanwhile, if CPU-Z reported PC3-10600 then while you can buy and install a lower DDR3 specification (PC3-6400 or PC3-8500) this is not recommended. Doing so will cause your system to down clock the frequency at which it the memory runs, namely 400MHz for PC3-6400 or 533MHz for PC3-8500. A slower memory frequency will yield a lower memory bandwidth, which reduces computer performance.

As far as DDR3 memory for a laptop goes, you will need to buy 204pin SODIMM memory modules. A SODIMM (Small Outline Dual Inline Memory Module) is a mini type of a DIMM used in desktop computers. If you’ve seen a DIMM before then a SODIMM will normally be about 50% of the length of a desktop DIMM module.

For DDR3 laptops you only need to install a single SODIMM memory module for your laptop to function, however it makes perfect sense to install pairs of DDR3 SODIMM memory modules. The reasoning is quite simple. Virtually all DDR3 memory laptops support what’s known as dual channel mode. In compliant laptops, dual channel mode effectively links the data paths of two memory modules (DDR3 in this case) to run them simultaneously. All read, write or copy operations performed on the memory are thus in effect run at double their original bandwidth. The net result of this is improved memory throughput – this in turn contributes to the overall performance of your laptop.

I just have to ask – can my DDR3 laptop memory upgrade go wrong?

DDR3 laptop memory upgrades are amongst the least prone to causing problems due to a straightforward trait of the industry. With the computer memory industry much settled and controlled by only a handful of big players, and thus airtight to smaller players at times all too willing to not always follow JEDEC (Joint Electron Devices Engineering Council) standards to the last “T”, it’s practically safe to say that all DDR3 SODIMM memory modules produced are compatible with each other.

Much the same is also true in terms of memory controllers that by the time that DDR3 appeared were tweaked to no longer cause issues when mixing single and double-sided SODIMM memory modules.

There is however one thing you’ll want to keep in the back of your mind, namely for best performance always install identical DDR3 SODIMM memory modules. Via doing so you’ll automatically enable what’s known as dual channel mode. What is meant by identical? By identical you need to install two likewise DDR3 SODIMM memory modules that are a) the same capacity and b) also the same specification. The brand of DDR3 laptop memory isn’t as significant, nevertheless if you want things to be ideal then doing so will also work well.

About the Author

Planning on upgrading your laptop’s memory and need assistance? Take a moment to visit the Laptop Memory Upgrades website including a growing number of or Laptop Memory FAQ’s for advice that won’t tire your mind.

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Kingston 8GB DDR2 SDRAM Memory Module 8GB (2 X 4GB) 667MHz DDR2-667/PC2-5300 ECC Chipkill DDR2 SDRAM 240pin KTM57808 $332.59 Kingston 8GB DDR2 SDRAM Memory Module 8GB (2 X 4GB) 667MHz DDR2-667/PC2-5300 ECC Chipkill DDR2 SDRAM 240pin KTM57808

Kingston 16GB DDR2 SDRAM Memory Module – 16GB (2 x 8GB) – 667MHz DDR2 SDRAM – 240-pin DIMM KTHXW66716G $802.95 Kingston 16GB DDR2 SDRAM Memory Module – 16GB (2 x 8GB) – 667MHz DDR2 SDRAM – 240-pin DIMM KTHXW66716G

64GB DDR2 SDRAM (8 X 8GB) Edge Memory Edge Tech 667MHz DDR2-667/PC2-5300 DDR2 SDRAM 240pin 495604-B21-PE $3071.33 64GB DDR2 SDRAM (8 X 8GB) Edge Memory Edge Tech 667MHz DDR2-667/PC2-5300 DDR2 SDRAM 240pin 495604-B21-PE

Kingston 16GB DDR2 SDRAM Memory Module – 16GB (2 x 8GB) – 667MHz DDR2 SDRAM – 240-pin DIMM KTDWS66716G $802.95 Kingston 16GB DDR2 SDRAM Memory Module – 16GB (2 x 8GB) – 667MHz DDR2 SDRAM – 240-pin DIMM KTDWS66716G

Axiom 8GB DDR2 SDRAM Memory Module $507.99 240-pin DIMM 43V7355-AXA 667 MHz 8 GB 8GB DDR2 SDRAM Memory Module Axiom Axiom Memory Solutions DDR2 SDRAM DDR2-667/PC2-5300 DIMM ECC Chipkill Lifetime RAM Module Registered www.axiommemory.com

HP 8GB DDR2 SDRAM Memory Module $442.99 2 x 4 GB 240-pin DIMM 466440-B21 667 MHz 8 GB 8GB DDR2 SDRAM Memory Module DDR2 SDRAM DDR2-667/PC2-5300 DIMM Fully Buffered HP Hewlett-Packard RAM Module www.hp.com

Free shipping 2G DDR2 800 memory for laptop DDR2 Memory $35.79 Free shipping 2G DDR2 800 memory for laptop DDR memory.

EDGE Tech 8GB DDR2 SDRAM Memory Module $364.99 2 x 4 GB 240-pin 667 MHz 8 GB 8GB DDR2 SDRAM Memory Module Apple Mac Pro APLMP-212995-PE DDR2 SDRAM DDR2-667/PC2-5300 ECC EDGE EDGE Tech Corporation Fully Buffered Lifetime RAM Module www.edgetechcorp.com

Lenovo 8GB DDR2 SDRAM Memory Module $348.99 2 x 4 GB 41Y2768 667 MHz 8 GB 8GB DDR2 SDRAM Memory Module IBM: x3755 (6677) x3655 (7985) DDR2 SDRAM ECC Lenovo Lenovo Group Limited RAM Module www.lenovo.com/us/en/

Crucial 8GB DDR2 SDRAM Memory Module $294.99 2 x 4 GB 240-pin DIMM 8 GB 800 MHz 8GB DDR2 SDRAM Memory Module CT2KIT51272AP80E Crucial Crucial Technology DDR2 SDRAM DDR2-800/PC2-6400 DIMM ECC Fully Buffered Lifetime RAM Module Retail www.crucial.com

Corsair 2GB DDR2 PC5300 200PIN SODIMM 66MHZ FOR NOTEBOOK LAPTOP VS2GB667D2 $38.71 Corsair 2GB DDR2 PC5300 200PIN SODIMM 66MHZ FOR NOTEBOOK LAPTOP VS2GB667D2

Micron 4GB DDR2 Ram PC2-6400 200pin Laptop SODIMM $91.18 Micron 4GB DDR2 Ram PC2-6400 200pin Laptop SODIMM

Crucial 16GB DDR2 SDRAM Memory Module – 16GB (2 x 8GB) – 667MHz DDR2-667/PC2-5300 – ECC – DDR2 SDRAM – 240-pin DIMM CT2KIT10247 $707.08 Crucial 16GB DDR2 SDRAM Memory Module – 16GB (2 x 8GB) – 667MHz DDR2-667/PC2-5300 – ECC – DDR2 SDRAM – 240-pin DIMM CT2KIT10247

Edge Memory EDGE Tech 16GB DDR2 SDRAM Memory Module – 16GB (2 x 8GB) – 667MHz DDR2-667/PC2-5300 – ECC – DDR2 SDRAM – 240-pin DI $776.55 Edge Memory EDGE Tech 16GB DDR2 SDRAM Memory Module – 16GB (2 x 8GB) – 667MHz DDR2-667/PC2-5300 – ECC – DDR2 SDRAM – 240-pin DI

Kingston 64GB DDR2 SDRAM Memory Module – 64GB (8 x 8GB) – 667MHz DDR2-667/PC2-5300 – DDR2 SDRAM – 240-pin DIMM KTHXW66764G $3178.1 Kingston 64GB DDR2 SDRAM Memory Module – 64GB (8 x 8GB) – 667MHz DDR2-667/PC2-5300 – DDR2 SDRAM – 240-pin DIMM KTHXW66764G

Axiom Axion 16GB DDR2 SDRAM Memory Module – 16GB (2 x 8GB) – 667MHz DDR2-667/PC2-5300 – ECC – DDR2 SDRAM – 240-pin DIMM A225721 $829.67 Axiom Axion 16GB DDR2 SDRAM Memory Module – 16GB (2 x 8GB) – 667MHz DDR2-667/PC2-5300 – ECC – DDR2 SDRAM – 240-pin DIMM A225721

Axiom Axion 16GB DDR2 SDRAM Memory Module – 16GB (2 x 8GB) – 667MHz DDR2-667/PC2-5300 – DDR2 SDRAM – 240-pin DIMM 413015B21AX $829.67 Axiom Axion 16GB DDR2 SDRAM Memory Module – 16GB (2 x 8GB) – 667MHz DDR2-667/PC2-5300 – DDR2 SDRAM – 240-pin DIMM 413015B21AX

Axiom Axion 16GB DDR2 SDRAM Memory Module – 16GB (2 x 8GB) – 667MHz DDR2-667/PC2-5300 – DDR2 SDRAM – 240-pin DIMM 46C7577AX $915.77 Axiom Axion 16GB DDR2 SDRAM Memory Module – 16GB (2 x 8GB) – 667MHz DDR2-667/PC2-5300 – DDR2 SDRAM – 240-pin DIMM 46C7577AX

Centon 8GB DDR2 SDRAM Memory Module $232.99 200-pin SoDIMM 4 x 2 GB 667 MHz 8 GB 8GB DDR2 SDRAM Memory Module 8GB667KITLT Upgrading your personal computer is one of the easiest and most cost effective ways to increase your systems performance. Centon’s memory upgrades are backed by a lifetime warranty and unlimited free technical support. Centon Centon Electronics DDR2 SDRAM DDR2-667/PC2-5300 Lifetime Non-ECC RAM Module RoHS SoDIMM Unbuffered Yes www.centon.com

IBM 8GB DDR2 SDRAM Memory Module $449.99 2 x 4 GB 240-pin DIMM 46C7420 667 MHz 8 GB 8GB DDR2 SDRAM Memory Module IBM ServerProven: x3400 7973 x3400 7974 x3400 7975 x3400 7976 x3500 7977 x3550 7978 x3650 7979 DDR2 SDRAM DDR2-667/PC2-5300 DIMM ECC Fully Buffered IBM IBM Corporation RAM Module www.ibm.com

Kingston ValueRAM 8GB DDR2 SDRAM Memory Module $250.99 2 x 4 GB 240-pin 667 MHz 8 GB ValueRAM is Kingston’s high-quality line of ‘by spec’ generic memory designed with the price conscious system builder, assembler and white box markets in mind. China RoHS DDR2 SDRAM DDR2-667/PC2-5300 ECC EU RoHS EU WEEE KVR667D2D4P5K2/8G Kingston Kingston Technology Company RAM Module Registered ValueRAM ValueRAM 8GB DDR2 SDRAM Memory Module Yes www.kingston.com

Kingston 8GB DDR2 SDRAM Memory Module $262.99 240-pin 667 MHz 8 GB 8GB DDR2 SDRAM Memory Module HP/Compaq: ProLiant BL465c ProLiant DL385 G2 ProLiant DL585 G2 Workstation xw9400 All Kingston memory modules must perform properly to ensure maximum performance. Therefore, Kingston has developed an industry leading quality process to ensure that Kingston memory delivers superior quality, performance, and 100% compatibility with the computing system. China RoHS DDR2 SDRAM EU RoHS EU WEEE KTH-XW9400K2/8G Kingston Kingston Technology Company Lifetime Limited RAM Module Registered Yes www.kingston.com

Future Memory 8GB DDR2 SDRAM Memory Module $321.99 240-pin DIMM 667 MHz 8 GB 8GB DDR2 SDRAM Memory Module Future Memory Solutions is a provider of memory upgrades for desktops, laptops, workstations and servers. All of our memory modules are manufactured to meet or exceed OEM specifications. Through our rigorous quality control process, we can ensure 100% compatibility and back all of our memory modules with a LIFETIME warranty. DDR2 SDRAM DDR2-667/PC2-5300 DIMM ECC FMD21024X72667FB Fully Buffered Future Memory Future Memory Solutions, LLC Lifetime RAM Module www.futurememorysolutions.com

466440-b21 8GB (2x4GB) kit DDR2 FBD 667MHz PC2-5300 Server Memory Ram, 1 year warranty $171.58 466440-B21 8GB(2x4GB) FBD DDR2 PC2-5300 667MHz Server Ram Memory Kits, low price, fast shipping!

397415-B21 8GB (2x4GB) FBD DDR2 PC2-5300 667MHz Server Ram Memory Kits $157.89 397415-B21 8GB 2x4GB FBD DDR2 PC2-5300 667MHz Server Ram Memory Kits, for ML350/370/DL160/360/380/580 G5 series, high quality

Crucial 8GB Kit (4GBx2), 240-pin DIMM, Fully Buffered ECC DDR2 PC2-6400 CT2KIT51272AF80E $282.75 Crucial 8GB Kit (4GBx2), 240-pin DIMM, Fully Buffered ECC DDR2 PC2-6400 CT2KIT51272AF80E

Crucial 16GB (2 x 8GB) – 667MHz DDR2-667/PC2-5300 – ECC – DDR2 SDRAM – 240-pin DIMM 117415 $705.41 Crucial 16GB (2 x 8GB) – 667MHz DDR2-667/PC2-5300 – ECC – DDR2 SDRAM – 240-pin DIMM 117415