Sodimm Laptop
Sodimm Laptop
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| Lot of 5 256MB PC2 4200 DDR2 533MHz SODIMM 200 Pin Laptop Memory RAM TESTED | |
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| New Samsung MV 3T2G4 4GB 2x2GB DDR3 Laptop SDRAM SODIMM 1333MHz PC3 10600 | |
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| ProMOS 256MB DDR SODIMM PC2700 333MHZ Laptop Memory Card | |
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| Qimonda 2GB 2x 1GB PC2 5300 DDR2 667 SODIMM Laptop Memory non ECC RAM 200pin | |
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| Kingston 2GB 2x 1GBPC2100 DDR 266 SODIMM laptop memory RAM non ECC CL25 200p | |
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can i put a SODIMM 2gb ram card in this laptop?
im going to be getting a laptop with 4 gb ddr3 ram but it has up to 8gb max. will i be able to put one or two of my sodimm 2gb cards in there? if i do will it make my laptop run any faster?
It depends on what kind of laptop it is. If you have 4 slots for RAM and the RAM is the same as what's in there in terms of speed and latency, then it can be done. However, most laptops, not all, have only 2 memory slots, so to kick it up to 8GB RAM you would have to use 2x4GB modules.
Hope this helps
Laptop Memory Frequency, Capacity and Timings - How To Find The Right Balance
SODIMM Memory Frequency
Regardless of the type of memory, be it SDRAM, DDR, DDR2, DDR3 etc. memory frequency pays a pivotal role in its performance. You see, frequency influences the speed at which bytes can be read and written to and from a SODIMM memory module.
The faster the frequency of a SODIMM memory module, the greater the bandwidth available to your system, thus ultimately the software you run. Some software benefits more than others when more bandwidth is available, nevertheless it's generally a good idea to have more of it if possible.
Of course depending on your model of laptop, it might not be possible to make use of higher frequency SODIMM memory modules. The underpinning for this is simple, while a laptop supporting for example PC2-4200 DDR2 SODIMM memory that runs at 533MHz effective can have a higher rated SODIMM memory module of the same type but higher grade installed (i.e. PC2-5300 DDR2 running at 667MHz), the net result will still be memory that runs at a maximum of 533MHz. This is true unless of course the memory controller in that laptop supports the frequency of the faster memory. Normally laptop manufacturers already install the fastest grade of memory during production..
Should you conclude that your laptop does support faster SODIMM memory modules, it may just be worth upgrading all the installed memory to whatever highest grade is supported. Memory frequency is the number one contributor to memory bandwidth therefore by in large performance. Do note how we wrote "all" the installed memory. You see, for your laptop to run at the faster memory frequency, all installed SODIMM memory must meet this specification thus be of the same grade. If your laptop has two SODIMM memory slots (this is the norm) then in practise both SODIMM memory modules must be identical. For example, in a DDR2 memory based laptop this might be PC2-6400, in a DDR laptop PC3200, in a SDRAM laptop PC133 or any other available combination. Simply follow this line of thought and you'll be okay.
SODIMM Memory Capacity
The amount of memory you have installed in your laptop is what generally speaking ultimately defines how smooth software runs. Consequently, while memory frequency is a key factor to SODIMM memory performance, the capacity of memory installed is fundamental for overall system performance.
How much memory you need is dependant on what software you run. Unfortunately, there's no golden rule that magically works for each and every application out there. Fortunately however there's an old principle that lends a helping hand: more memory always helps. Essentially what this translates to in practise is this: install more memory than you need as this way you're far less likely to run into slowdowns, providing of course the slowdowns are the result of low system memory and not, per se, the processor, graphics card, storage device etc.
Does this sound too good to be true? Regrettably yes, for three reasons. Firstly, buying too much laptop memory will likely aid laptop performance at the cost of upsetting your wallet. Secondly, in an ideal world all laptops, be them new or old, would support the currently maximum capacity of available SODIMM memory modules. Obviously the world isn't an ideal place and thus you can only upgrade to the maximum capacity supported by your laptop's memory controller. Thirdly, if you're running a 32bit Operating System on a laptop supporting 4GB or more of memory then just keep in mind that even though the memory will work, applications will not use the full 4GB. This is a limitation of 32bit addressing, only some of this namespace is available to system memory, the rest must be used for addressing other types of memory within your laptop, for example that of the graphics card. To overcome this on laptops that support it, upgrade to a 64bit Operating System.
Starting to sound slightly complicated? Let's break this down into simple English. What you should deduct from this is as follows: buy as much memory as your wallet and laptop allows but consider the limitations of 32bit Operating Systems. If you plan to upgrade to 4GB or more of memory and have a newer laptop then upgrade its Operating System to a 64bit version. If your laptop supports 4GB but only 32bit Operating Systems then just keep in mind that the maximum your applications will likely see visible thus use is around 3.25-3.5GB.
SODIMM Memory Timings
Computer memory feature what's known as timings. These are numerical values which represent delays in how a SODIMM memory module operates. The actual values vary depending on the type of memory (i.e. DDR2) and whether the given SODIMM memory module is mainstream or a performance part. Such delays control all the types of commands that get executed when your computer issues a read, write or copy command. Such timings are stored on each SODIMM memory module in what's known as a SPD (Serial Presence Detect) chip, located on the same PCB (Printed Circuit Board) as the memory chips.
Because memory timings are ultimately delays then one might think it's logical to assume that lower timings are better. This can be answered as true but only to an extent. You see, there is only so much that these timings can be lowered, even if a SODIMM memory module has been binned as a performance part. This is due to synchronisation issues. Memory timings control how slow or how fast a given operation is processed by a SODIMM memory module. If it's set too fast then the outcome may be unstable operation. At the very least this will cause erroneous software behaviour, or if you're less fortunate a system halt.
Since enhanced memory timings can only contribute so much to real-world system performance (circa 5% real-world performance boost), it's really a case of deciding whether you believe the added speed boost (i.e. slightly more memory bandwidth, somewhat lower memory access latency) is enough to warrant the price premium. Various tests over the years suggest no, even if you install "performance" SODIMM memory, you're not likely to feel the difference in any type of software but benchmarks.
Conclusion
There are some important facts to recall from the above. First and foremost memory frequency plays a pivotal role in memory performance, otherwise defined at the speed at which memory read, write and thus copy commands get processed. The higher the memory bandwidth, the more it indirectly influences overall system performance. Secondly, memory capacity is what directly affects the overall speed of your laptop by having a direct influence on computer performance. The more memory you have installed, the far less likely you are to run into slowdowns caused by insufficient memory resources available to the Operating System and other software. Thirdly, memory timings act as an icing on the cake (for a better term) to both memory frequency and capacity.
About the Author
Find out much more on Laptop Memory by visiting the Laptop Memory Upgrades website complete with an easy to follow Guide, FAQ's and Articles.
Asus M4A88T-I Deluxe Unboxing
