Archive for April 2010

What is a MicroSDHC Card?

MicroSDHC stands for “micro Secure Digital High Capacity” format, which means that the format espouses a small casing and a large storage capacity. On this promise, these small devices deliver on a big scale. Measuring in at 0.43 inches wide by 0.59 inches tall and by 0.039 inches thick, microSDHC cards can carry quite an impressive amount of data for their small size. In fact, the high capacity storage is what differentiates them from normal microSD cards; the higher capacity format can currently pack up to 32 Gigabytes of data into the same space that normal microSD cards use for 2 Gigabytes of storage or less.

MicroSDCH cards find themselves with a wide variety of possible uses, thanks to their small size and high capacity rates. Many brands of cell phones, cameras, PDAs, and GPS units can use microSDHC cards natively, while still many others can use them with a microSD adapter (which increases the size of the unit to that of a standard SD card). Some companies also offer USB flash drive adapters, which allow a microSDHC card to be used on a computer in the same manner as a normal flash drive, while also allowing the card to be switched in and out with little to no difficulty.

Because of this versatility, these cards tend to be highly prized by professionals in a wide variety of fields. With professionals from varied industries from transportation to business administration and on to graphic design and photography employing these cards in some manner or another, it is easy to see that the audience seeking them is a large and diversified one, indeed. The audience grows even more diverse when one adds in the non-professionals in those fields, and related ones. Amateur photographers, for example, tend to use microSDHC cards at similar rates to their professional counterparts, as do designers and illustrators working with multiple media devices.

There are some slight drawbacks to the format, however. The high capacity formatting on microSDHC cards makes them incompatible with some of the older microSD technologies, prohibiting those who hold on to older equipment from using them effectively. While this problem will evaporate with time and advancement, the format is still new enough that first-time buyers are best advised to make sure that their current equipment is properly enabled for the use of these high capacity cards.

Have a question about MicroSDHC Cards?  Leave a comment below.

New computer models for the week of 04/23/2010

Released this week, 100% compatible memory upgrades for the following systems:


Acer Aspire 5740G (AS5740-6xxx)

  • Speed of RAM: PC3-8500
  • Fixed RAM: 0MB
  • Standard RAM: 4GB
  • Maximum RAM: 8GB
  • # of Banks: 2
  • # of Sockets: 2
  • Chipset: Intel Core i3, i5

Acer Aspire 5740G (AS5740-5309)

  • Speed of RAM: PC3-8500
  • Fixed RAM: 0MB
  • Standard RAM: 4GB
  • Maximum RAM: 8GB
  • # of Banks: 2
  • # of Sockets: 2
  • Chipset: Intel Core i3, i5

Acer Aspire 5740 (AS5740-5xxx)

  • Speed of RAM: PC3-8500
  • Fixed RAM: 0MB
  • Standard RAM: 4GB
  • Maximum RAM: 8GB
  • # of Banks: 2
  • # of Sockets: 2
  • Chipset: Intel Core i3, i5

Acer Aspire 5740 (AS5740-6xxx)

  • Speed of RAM: PC3-8500
  • Fixed RAM: 0MB
  • Standard RAM: 4GB
  • Maximum RAM: 8GB
  • # of Banks: 2
  • # of Sockets: 2
  • Chipset: Intel Core i3, i5

Acer Aspire Aspire One 10.1 532h (AO532h-xxxx)

  • Speed of RAM: PC2-4200
  • Fixed RAM: 0MB
  • Standard RAM: 1GB
  • Maximum RAM: 2GB
  • # of Banks: 1
  • # of Sockets: 1
  • Chipset: Intel Atom

Acer Extensa 4620Z

  • Speed of RAM: PC2-5300
  • Fixed RAM: 0MB
  • Standard RAM: 1GB (512×2)
  • Maximum RAM: 2GB (1GBx2)
  • # of Banks: 2
  • # of Sockets: 2
  • Chipset: Intel GL960

Apple MacBook Pro 13.3-inch 2.4GHz Core 2 duo (MC374LL/A) 2010

  • Speed of RAM: PC3-8500
  • Fixed RAM: 0MB
  • Standard RAM: 4GB (2x2GB)
  • Maximum RAM: 8GB
  • # of Banks: 2
  • # of Sockets: 2
  • Chipset: N/A

Apple MacBook Pro 13.3-inch 2.66GHz Core 2 Duo (MC375LL/A) 2010

  • Speed of RAM: PC3-8500
  • Fixed RAM: 0MB
  • Standard RAM: 4GB (2x2GB)
  • Maximum RAM: 8GB
  • # of Banks: 2
  • # of Sockets: 2
  • Chipset: N/A

Apple MacBook Pro 15.4-inch 2.4GHz (MC371LL/A) 2010

  • Speed of RAM: PC3-8500
  • Fixed RAM: 0MB
  • Standard RAM: 4GB (2x2GB)
  • Maximum RAM: 8GB
  • # of Banks: 2
  • # of Sockets: 2
  • Chipset: N/A

Apple MacBook Pro 15.4-inch 2.53GHz Core i5 (MC372LL/A) 2010

  • Speed of RAM: PC3-8500
  • Fixed RAM: 0MB
  • Standard RAM: 4GB (2x2GB)
  • Maximum RAM: 8GB
  • # of Banks: 2
  • # of Sockets: 2
  • Chipset: N/A

Apple MacBook Pro 15.4-inch 2.66GHz Core i7 (MC373LL/A) 2010

  • Speed of RAM: PC3-8500
  • Fixed RAM: 0MB
  • Standard RAM: 4GB (2x2GB)
  • Maximum RAM: 8GB
  • # of Banks: 2
  • # of Sockets: 2
  • Chipset: N/A

Apple MacBook Pro 17-inch 2.53GHz Core i5 (MC024LL/A) 2010

  • Speed of RAM: PC3-8500
  • Fixed RAM: 0MB
  • Standard RAM: 4GB (2x2GB)
  • Maximum RAM: 8GB
  • # of Banks: 2
  • # of Sockets: 2
  • Chipset: N/A

Apple MacBook Pro 17-inch 2.53GHz Core i7 (MC024LL/A CTO) 2010

  • Speed of RAM: PC3-8500
  • Fixed RAM: 0MB
  • Standard RAM: 4GB (2x2GB)
  • Maximum RAM: 8GB
  • # of Banks: 2
  • # of Sockets: 2
  • Chipset: N/A

Asus Asus Motherboards A7V133

  • Speed of RAM: PC-133
  • Fixed RAM: 0MB
  • Standard RAM: 0MB
  • Maximum RAM: 1.5GB
  • # of Banks: 3
  • # of Sockets: 3
  • Chipset:

Asus Asus Motherboards A7V133b

  • Speed of RAM: PC-133
  • Fixed RAM: 0MB
  • Standard RAM: 0MB
  • Maximum RAM: 1GB
  • # of Banks: 2
  • # of Sockets: 2
  • Chipset: Via KT133

Asus Asus Motherboards A7V133c

  • Speed of RAM: PC-133
  • Fixed RAM: 0MB
  • Standard RAM: 0MB
  • Maximum RAM: 1.5GB
  • # of Banks: 3
  • # of Sockets: 3
  • Chipset: Via KT133

Compaq ProLiant BL685c G5

  • Speed of RAM: PC2-5300
  • Fixed RAM: 0MB
  • Standard RAM: 4GB
  • Maximum RAM: 128GB
  • # of Banks: 8
  • # of Sockets: 16
  • Chipset: Nvidia 2200

Compaq ProLiant BL685c G6

  • Speed of RAM: PC2-6400
  • Fixed RAM: 0MB
  • Standard RAM: 8GB
  • Maximum RAM: 256GB
  • # of Banks: 16
  • # of Sockets: 32
  • Chipset: ServerWorks HT2100

Dell Latitude E6410

  • Speed of RAM: PC3-10600
  • Fixed RAM: 0MB
  • Standard RAM: 2GB or 4GB
  • Maximum RAM: 8GB
  • # of Banks: 2
  • # of Sockets: 2
  • Chipset: Intel i7 QM57

Dell Latitude E6410 ATG

  • Speed of RAM: PC3-10600
  • Fixed RAM: 0MB
  • Standard RAM: 2GB or 4GB
  • Maximum RAM: 8GB
  • # of Banks: 2
  • # of Sockets: 2
  • Chipset: Intel i7 QM57

Dell Latitude E6510

  • Speed of RAM: PC3-10600
  • Fixed RAM: 0MB
  • Standard RAM: 2GB or 4GB
  • Maximum RAM: 8GB
  • # of Banks: 2
  • # of Sockets: 2
  • Chipset: Intel i7 QM57

Dell XPS Desktops XPS 730x

  • Speed of RAM: PC3-10600
  • Fixed RAM: 0MB
  • Standard RAM: 3GB (1GB x 3)
  • Maximum RAM: 12GB
  • # of Banks: 3
  • # of Sockets: 3
  • Chipset: Intel X58 Core i7

Gateway Gateway GT Series Desktops GT5238E Media Center

  • Speed of RAM: PC2-4200
  • Fixed RAM: 0MB
  • Standard RAM: 256/512/1GB
  • Maximum RAM: 8GB
  • # of Banks: 2
  • # of Sockets: 4
  • Chipset: N/A

HP Compaq Elite Desktop HPE-150F

  • Speed of RAM: PC3-10600
  • Fixed RAM: 0MB
  • Standard RAM: 8GB (4x2GB)
  • Maximum RAM: 16GB
  • # of Banks: 4
  • # of Sockets: 4
  • Chipset: Intel Core i7 H57

HP Compaq ProBook 4520s

  • Speed of RAM: PC3-8500
  • Fixed RAM: 0MB
  • Standard RAM: 1GB/2GB/3GB/4GB
  • Maximum RAM: 8GB
  • # of Banks: 2
  • # of Sockets: 2
  • Chipset: Intel Core i5 HM57

Intel Intel Motherboards D915GAG

  • Speed of RAM: PC-3200
  • Fixed RAM: 0MB
  • Standard RAM: 0MB
  • Maximum RAM: 4GB
  • # of Banks: 2
  • # of Sockets: 4
  • Chipset: Intel 915G

Lenovo Lenovo Thinkpad EDGE 14 inch (0578 Intel)

  • Speed of RAM: PC3-8500
  • Fixed RAM: 0MB
  • Standard RAM: 2GB
  • Maximum RAM: 4GB
  • # of Banks: 2
  • # of Sockets: 2
  • Chipset: Intel Core i3

Lenovo Lenovo Thinkpad EDGE 15 inch (0301-xxx)

  • Speed of RAM: PC3-8500
  • Fixed RAM: 0MB
  • Standard RAM: 2GB or 4GB
  • Maximum RAM: 4GB
  • # of Banks: 2
  • # of Sockets: 2
  • Chipset: Intel Core i3

Lenovo Lenovo Thinkpad L412 (0553-xxx)

  • Speed of RAM: PC3-10600
  • Fixed RAM: 0MB
  • Standard RAM: 2GB or 4GB
  • Maximum RAM: 8GB
  • # of Banks: 2
  • # of Sockets: 2
  • Chipset: Intel Core i5 HM55

Lenovo Lenovo Thinkpad L512 (2598-xxx)

  • Speed of RAM: PC3-10600
  • Fixed RAM: 0MB
  • Standard RAM: 2GB or 4GB
  • Maximum RAM: 8GB
  • # of Banks: 2
  • # of Sockets: 2
  • Chipset: Intel Core i5 HM55

Lenovo Lenovo Thinkpad W701 (2500, 2541, 2542-xxx)

  • Speed of RAM: PC3-8500
  • Fixed RAM: 0MB
  • Standard RAM: 2GB or 4GB
  • Maximum RAM: 16GB
  • # of Banks: 4
  • # of Sockets: 4
  • Chipset: Intel QM57

Olympus Stylus STYLUS-7030

  • Speed of RAM: N/A
  • Fixed RAM: 1GB
  • Standard RAM: 1GB
  • Maximum RAM: N/A
  • # of Banks: 1
  • # of Sockets: 1
  • Chipset: N/A

SuperMicro SuperMicro Motherboards H8DM8-2

  • Speed of RAM: PC2-6400
  • Fixed RAM: 0MB
  • Standard RAM: 0MB
  • Maximum RAM: 128GB
  • # of Banks: 8
  • # of Sockets: 16
  • Chipset: MCP55 Pro

SuperMicro SuperMicro Motherboards H8DMR-82

  • Speed of RAM: PC2-6400
  • Fixed RAM: 0MB
  • Standard RAM: 0MB
  • Maximum RAM: 64GB
  • # of Banks: 4
  • # of Sockets: 8
  • Chipset: MCP55 Pro

Toshiba Qosmio X500-Q840S

  • Speed of RAM: PC3-8500
  • Fixed RAM: 0MB
  • Standard RAM: 4GB (2x2GB)
  • Maximum RAM: 8GB
  • # of Banks: 2
  • # of Sockets: 2
  • Chipset: Intel Core i7 PM55

Toshiba Qosmio X500-S1801

  • Speed of RAM: PC3-8500
  • Fixed RAM: 0MB
  • Standard RAM: 4GB (2x2GB)
  • Maximum RAM: 8GB
  • # of Banks: 2
  • # of Sockets: 2
  • Chipset: Intel Core i7 HM55

Toshiba Satellite A105-S4074

  • Speed of RAM: PC2-5300
  • Fixed RAM: 0MB
  • Standard RAM: 512MB/1GB/2GB
  • Maximum RAM: 4GB
  • # of Banks: 1
  • # of Sockets: 2
  • Chipset: Intel 945GM

Toshiba Satellite A305-S6905

  • Speed of RAM: PC2-6400
  • Fixed RAM: 0MB
  • Standard RAM: 512MB/1GB/2GB
  • Maximum RAM: 4GB
  • # of Banks: 2
  • # of Sockets: 2
  • Chipset: Intel GM45

Why Doesn’t My Window’s PC Recognize All 4GB of Memory Installed?

The situation is this: you’ve got a computer with 4GB RAM, but Windows reports you have only 3.25GB (or some other number less than 4GB). Where did the rest of the RAM go? How can you use the full amount? The answer to that last question is unfortunately that you can’t, not with a 32-bit version of Windows anyway.

Here’s what’s going on. To read and write information in RAM a computer program must specify where in memory it wishes to do so. For this it uses an address (I’m leaving virtual memory out of this discussion because it’s irrelevant and would only complicate matters, so in this article when I say address I mean a physical address, that refers to an actual byte on your real RAM chips). Ever since the introduction of the 386 these addresses have been 32 bits in size. This means that there are 2 to the power of 32, or 4,294,967,296 possible addresses. Because the x86 architecture addresses individual bytes, this means a maximum of 4,294,967,296 bytes, or 4GB, can be addressed. This is the physical address space.

Many devices like your video or sound card use memory mapping to allow software to communicate with those devices. What this means is that they use certain addresses don’t actually refer to a byte in memory; instead writing to that address sends information to that device. To do this they reserve a portion of the physical address space. If your video card is using 512MB of that address space and you install 4GB of memory in the system, you would need 4.5GB of address space to address all that, which you don’t have. So 512MB of physical RAM cannot be addressed (because those addresses are used by the video card) and thus cannot be used or even “seen” by the OS.

Note that it’s not only the video card; most other devices do this as well. Using the System Information tool in Windows (Start, Run, msinfo32.exe) you can see all hardware devices that do this and what address ranges they use under the “Hardware Resources, Memory” option (for the oldies: notice how there are still some devices that map into the old “upper memory” region (the area between the first 640KB and 1MB of RAM)). The ranges are shown as hexadecimal numbers.

Most 32 bit processors support an extended addressing mode called PAE (Physical Address Extension) which allows it to use 36 bit addresses for a total of 64GB of address space. 64 bit CPUs can use 64 bit addresses which allow for, theoretically, more than 16 million GB RAM (16 Exabyte’s). However, for compatibility reasons all hardware devices will map into the first 4GB reason of address space (otherwise they wouldn’t be able to run a 32 bit OS). So there’s still an overlap and in the default scenario you’d still lose part of your RAM (even if you have e.g. 8GB RAM, you’d lose part of the first 4GB and see only e.g. 7.2GB). But most modern motherboards are capable of remapping the upper portion of RAM into the range above 4GB so all of it can theoretically be used (unless you actually have 64GB of RAM on a system with PAE).

I say theoretically because you still need OS support for the 36 bit addressing (or a real 64 bit OS on 64 bit systems). Windows does support PAE (among other things it’s needed for Data Execution Prevention in Windows XP SP2 and up) but unless you have Windows Server it doesn’t actually allow you to use the address above the 4GB boundary so you still lose RAM even if your motherboard has this support. The 64 bit versions of Windows (even the client versions) allow you to use 18TB of RAM so naturally it can use the full 4GB if your motherboard can do the remapping.

So simply put, if you want to use 4GB RAM and not lose any of it, you need a 64 bit CPU and either Windows Server, a 64 bit version of Windows, or some other operating system that either supports PAE or 64 bit.

What is a MicroSD Card

In the high technological world we live in today, there are few, if any, electronics that do not possess a removable form of memory. MicroSD cards are generally used in a variety of high-tech phones, PDA’s, some GPS systems; smaller hand held games, and digital cameras. The MicroSD cards are used to store pictures, music, contact lists, addresses, and virtually any kind of information you would want to save off the device using the card versus saving the information on the device itself.

The MicroSD card is the smallest of the memory cards available and average size is approximately the size of a fingernail or smaller. Though tiny, the amount of information that can be stored on the memory card is astounding and currently they are commonly found in capacities ranging from 64 MB to 2 GB. Already there is a buzz about the technology world of MicroSD and SDHC cards with a memory capacity of 32 GB and up to 2 terabytes, these cards would most likely be referred to as SDXC though.

The confusion that tends to be around the various cards is what type to get and what do the various suffix’s mean. That is easily explained. The Micro cards that are SD stand for Secure Digital, SDHC stand for High Capacity Secure Digital and SDXC simply stands for Extreme Capacity Secure Digital. It can be a daunting task to separate the variety of techno terminology but one thing to be certain of before purchasing a new form of your MicroSD card is to be sure it is compatible with the device you are going to be using it in.

Most devices will be compatible with the various forms of the MicroSD cards, but reading them from another device, such as a laptop, can be another matter altogether. Many of the MicroSD cards are sold and packaged with a SD adapter so they can be read from your computer with ease but be wary about purchasing a generic adapter as they are generally not universally compatible with the various MicroSD cards.

The days of losing information from your phone or PDA because of a malfunction or dropping it are behind us. With the MicroSD cards storing your information, transferring your information from one device to another is as easy as pulling the memory card from the original device and inserting it into your new one. As always with storage devices, it is recommended to make a back up copy of the information on a storage disc or flash drive to prevent loss of information should something happen to your MicroSD card.

Have a question about MicroSD Cards?  Leave a comment below.

Confused About Flash Memory Speed Ratings?

Just how fast is flash memory? These thumb-sized devices have revolutionized data storage and transfer, but not all flash drives are created equal. Here’s the lowdown on flash speed performance ratings.

The X Factor

Flash speeds are often denoted with “X” unit ratings such as 40X, 80X, or 300X. Higher numbers are associated with faster data reading and data writing speeds.

It sounds simple. However, not all manufacturers utilize the same rating system. Thus, sometimes 40X refers to a write speed, and sometimes it refers to a read speed. Be careful: read speeds are always faster than write speeds, but it’s the write speed that matters. The write speed indicates how quickly a flash card can transfer data.

What Does X Stand For?

The X speed is shorthand for kilobytes transferred per second. A 1X data transfer rating means that a drive can transfer data at 150 kilobytes per second.

X in Real Terms

Differences in transfer speed adds up quickly. For instance, transferring 100MB of data would take about 15 seconds with a 40X flash drive. With a 300X flash drive, the transfer would be complete in just two seconds.

How Much Storage Do I Need?

Nowadays, some flash drives offer hundreds of megabytes – even gigabytes – of storage. Of course, not everybody needs to transfer entire gigabytes of files. If you’ll only be transferring small word processing documents, then just a few megabytes will do. However, digital photos, PowerPoint presentations, and other files take up considerably more space. It’s better to have too much storage than not enough.

Is X all that Matters?

Higher flash speed ratings do not necessarily translate to faster data processing. That’s because a flash drive interacts with a PC, camera, mobile phone, or other flash card reader. The second device’s capabilities matter. For instance, a cell phone might not be designed to efficiently interface with a flash drive’s large amount of memory. Another consideration is the host device’s USB port. Some ports have higher speed capabilities than others. Some PCs will automatically indicate when faster ports are available.

So there you have it – our guide to the X factor. In sum, choose a flash drive with the highest data writing speed that fits your budget. Whether you call your new data stick a flash drive, a thumb drive, or a USB key, you’ll be glad to call it your own!