What is the Difference Between DDR1 DDR2 & DDR3? - The Complete Idiot's Guide

What is the confusion about RAM?
Most computer users to search before you upgrade the system to know so well, a perfectly matching CPU, motherboard and video card combination that meet all their needs. But the majority of them fail when it comes to RAM. They know only the size of the RAM ie 1GB, 2GB or 4GB, but they do not know what is that DDR1, DDR2 or DDR3. So that's why I came up with an idiot's guide to buying a RAM, because it turns out,that in selecting the proper DDR variant is a very important factor that determines will carry out as your entire system so that every computer user should be well advised to learn it too.

DDR1 Specifications
DIM DDR (Double Data Rate DDR DIMM or DIMMs), or most popularly known simply GDR. Double Data Rate interfaces provide two data transfers per differential clock. The data is registered when the CK goes high [the + side], and / CK goes low [the - side]. DDR1 utilizes theJEDEC standard for Double Date Rate [DDR I] SDRAM. Like all DDR-RAM is as registered or un-buffered disposal. Registered DIMMs are generally known as FB-DIMMs and have their address and control lines buffered in order to signal to reduce on load. FB-DIMMs are significantly more expensive than un-buffered DIMMs and are typically reserved for server applications. There are very few enthusiast / prosumer / players use FB-DIMMs in the CPU's. Un-buffered DIMMs do not feature on line and control lineBuffering, so they cost a lot less. However, you can load a system-limited and are therefore generally limited in number, which can be fitted on a single system. You'll find that most un-buffered DIMMs can be installed on a motherboard to a maximum of 4 x 1 GB in those days. Buffered or registered DIMMs do not have these restrictions and server boards can be 8 x 1 GB, to accommodate 16 x 1 GB or more. An interesting and largely unknown aspect of the un-buffered DDR DIMM modules is that they are able torunning a clock faster than FB-DIMMs.

DDR2 specifications
DDR2 memory is the second generation in DDR memory. DDR2 starts with a speed of 400 MHz to the lowest, while the 400-MHz speed is actually the highest speed for DDR1. Therefore, DDR2 takes, where DDR1 leaves off. It's a bit strange, but due to the different latency 400MHz DDR1 will exceed one 400MHz DDR2, but the advantage back to DDR2 when vehicle speed reaches the next step is 532MHz,DDR1, which can not reach.

DDR3 Specifications
DDR3 is the third generation in DDR memory. DDR3 starts with a low capacity level of 800 Mbit / s and ranges up to 1600Mbps with bus speeds as high as 2000MHz. Higher performance with lower power consumption is of great advantage, because the voltage is only 1.5 V for DDR3 as compared to 1.8V for DDR2. Lower heat is generated, which means that the systems run cooler. Ultimately, the new technology will be in modules with higher capacity: Upto 8 GB-help modules (with 4-gigabit chips lower) for server / workstation system costs.

Transfer Prices
Another confusion is that RAM is known primarily in the PC number, so here are the transmission rates for the various DDRs:

DDR1 Data Transfer
DDR SDRAM: Double Data Rate SDRAM (DDR200, DDR266, DDR333 are standard) PC1600 (DDR-200 SDRAM); clock frequency: 100MHz, Data Rate: 200MHz, Throughput 1600MB / s PC2100 (DDR-266 SDRAM); Clock Speed: 133 MHz , Data Rate: 266MHz,Throughput 2100MB / s PC2400 (DDR-300 SDRAM); Clock Speed: 150MHz, Data Rate: 300MHz, Throughput 2400MB / s PC2700 (DDR-333 SDRAM); Clock Speed: 166MHz, Data Rate: 333MHz, Throughput 2600MB / s PC3000 (DDR 366 SDRAM); clock frequency: 183MHz, Data Rate: 366MHz, Throughput 2900MB / s PC3200 (DDR-400 SDRAM); clock frequency: 200MHz, Data Rate: 400MHz, Throughput 3200MB / s

DDR2 Data Transfer Rate
DDR2 SDRAM: Double Data Rate SDRAM II (Quad Edge Clock Rate, 1.8VSignaling), the second generation of PC2-3200 (DDR2-400 SDRAM); Clock Speed: 100 MHz, s Data Rate: 400MHz, Throughput 3200MB / PC2-4300 (DDR2-533 SDRAM); Clock Speed: 133MHz, Data Rate: 532MHz, Throughput 4300MB / s PC2-5300 (DDR2-667 SDRAM); clock frequency: 167MHz, Data Rate: 667MHz, Throughput 5300MB / s PC2-5400 (DDR2-675 SDRAM); clock frequency: 167MHz, Data Rate: 667MHz, Throughput 5400MB / s PC2 -6400 (DDR2-800 SDRAM); clock frequency: 200MHz, Data Rate: 800MHz, Throughput6400MB / s

DDR3 Data Transfer Rate
DDR3 SDRAM: Double Data Rate SDRAM III (Quad Edge Clock Rate, 1.5V signaling), the third generation PC3-6400 (DDR3-800 SDRAM); clock frequency: 100MHz, Data Rate: 800MHz, Throughput 6.40GB / s PC3 - 8500 (DDR3-1066 SDRAM); clock frequency: 133MHz, Data Rate: 1066MHz, Throughput 8.53GB / s PC3-10600 (DDR3-1333 SDRAM); clock frequency: 166MHz, Data Rate: 1333, Throughput 10.67GB / s PC3-12800 (DDR3-1600 SDRAM); Clock Speed: 200 MHz,Data Rate: 1600MHz, Throughput 12.80GB / s Now, it is really hard to list determines which RAM best suited to the motherboard. Before buying the RAM, you should research your CPU manufacturer's RAM recommendations and fit, the exact nature of the GDR in it. It would be equally foolish with a PC3-12800 DDR3-1600 with an AMD Sempron 2800 +, how would you charge for your Intel QX6800 with a PC1600 DDR-200. Each CPU / chipset combo has its proper DDR fit, and you should find out exactly what they areand stay with them. If you recommend fir slower than DDR for your system is a critical end-RAM features and may slow down your system.

Top Manufacturers
Here is the list of some of the leading how to buy a RAM from an unknown vendor would be in warranty issues.

Kingston
Corsair
Centon
Crucial
OCZ
Patriot

If you follow these guidelines carefully and research the right DDR for your system, you will enjoy years and expeditiousuninterrupted use. A little study is a small price!

Hang on a Second - History of the Leap Second

We have all heard a leap year - that additional days added to the calendar every four years. It can give us a longer February but it is also important to fit in perfectly with our calendars and seasons. If the additional days was not a leap year then eventually (albeit after more than a century) the Winter will begin in July and will begin in the summer, at Christmas (and vice - versa) in the southern hemisphere, because the earth is an additional six takes hours longer than 365 days a year toCircle of the sun.

A leap year can be a bit of fudge but the alternative, fourth day have at the end of the year, not what our days and nights would of course throw in sync with each other (and you might imagine, with only six hours a day - some of us fight, to do things in 24!).

Of course we have always measured time in relation to the movement of the earth - one day will be a complete revolution, a year in orbit the sun. However, as our way of measuring time became more and more it soon became apparent that there are other irregularities in the rotation of the earth than the additional six hours in a year.

GMT (Greenwich Mean Time) was developed because there is a need for a time scale where the mean position of the sun at noon, averaged over the whole year on the Greenwich Meridian (zero longitude) and summer time hours are added or removed depending on the time of the year.

But in 1955 the first atomic bomb> Clock went into operation after the discovery of the stability of the cesium-133 atom) at an exact phrase vibrated (9,192,631,770 a second. With this accuracy, adopted the International System of units (SI) that a second, should be defined as the number of oscillations of the cesium-133 atom.

According to the SI second a time scale as International Atomic Time (TAI - from the French Temp Atomique International), include a simple, wasSeconds for the 24 hours of our time. Conversely, as TAI were not related to the movement of the earth, it was soon discovered that TAI and atomic clocks were far more stable and reliable than the Earth itself (in fact, an atomic clock is 1000000 times more accurate than the Earth) rotation.

In general, the earth is always slower (in their rotation, though for no apparent reason and then it seems to accelerate), the TAI is of little use for those who want theirClocks to be in harmony with the earth (astronomers, which) are by far most of these songs.

Thus, another time scale has been developed called Coordinated Universal Time (UTC - again from the French - Temp Universel coordonné). This was on Atomic Time (TAI), but are made small adjustments to make it in line with the GMT-based ( by the way, now commonly referred to as UT1, or depending on the time zone, UT 1 UT 2 UT 3, etc.)

UTC is adjusted by the insertion of extra seconds, as the jumpSeconds, as necessary, keeping to within one second of GMT (or UT1). It is possible, a second must be removed in the future under certain circumstances, but it has not happened until now. Clock in modern industry is very important in computer technology and the UTC-synchronized time, usually by using an NTP server (Network Time Protocol) - the type of time sensitive international transactions.

A leap seconds is usually inserted at the end of December in the last hour (although it was sometimes in June, done in Marchand September). In deciding whether a leap second is necessary, is taken from the Earth Orientation Center of the International Earth Rotation and Reference Systems Service (IERS), which can monitor the Earth's rotation and the adjustment of six months in advance.

If a leap second is added 61 seconds in the final minute of the year. The well-known "six pips" radio signal, will receive an additional pip and even London's famous Big Ben held back before a second bongs (butNo additional bong how they intended to represent the hours) are

There have been 33 leap seconds have been added to UTC since 1972 (when the first ones were added later to ten), but as the earth's rotation is continuing to slow it is estimated that over the next thousand years or have two leap seconds will be added each month.

The Growing Network

I remember myself back in the 1990s, lectures students on networked services. The good old days that I call. DNS, DHCP, WINS, Exchange, then it was very large. The network of 2ks have taken a new look and feel. I remember having regard to the 80/20 rule, where 80% of the services of a network should be local. The technology has nearly reversed this rule. The decrease in bandwidth costs, has changed the introduction of wireless LANs, QoS, mobility, given the incessant cry for network management. Somesad that networks are ill defined. File-sharing, has been revolutionized.

Instantaneous access to user demand, since it is less tolerant to delay. So are the applications. Vendor interoperability has created a mix of friendly neighbors devices. The IT department or tech guys, as they are called, by additions overwhelmed. It is not uncommon to see sales representatives from three or more companies at the site in one day. The downtime will be a no, no. Growth in the ManagedService provider is as a direct response to this phenomenon. Companies pay thousands of dollars to get the much needed proactive support. The stakeholders must now be knowledgeable in the purchase of this service. Cisco, IBM, Dell and HP, to name but a few have all the managed service market. The good news is that there are companies that are making this invaluable service available to small networks. Business owners are aware, no more that the break-fix modelprofitable.

I already have companies that recover times of poorly planned growth. The adoption of WiFi by some companies led technician sent out to receive formal training for the implementation. Managed Services eradicate most of these everyday problems by moving to implement the customer solutions that optimize the plan to them, and to successfully run the business with proven methods and tools.

Contemporary Wall Clock - Sculptured Piece of the Present

Last night I was on the phone talking with one of my best friends. Through our many topics we discussed, she mentioned that they are looking for the perfect contemporary wall clock. She said she needed the perfect clock to fit with their current style of decoration. She went on to the furniture and other accessories that are already in the room. Finally, it is added that their search has brought just the right time-piece, without success. Their wiselast statement made me laugh, and I was very impressed. She explained that they run out of time before it runs out of options.

Our conversation got me thinking. What actually is a contemporary wall clock, what makes it different then the classic or kitchen wall clock? "I looked up the definition of the present. It states that it is modern and features of the present. I found out that the simplistic and geometric design of the overwhelming stylethat share all contemporary wall clocks. They all have sharp lines and often blend modern and traditional patterns, that is the hallmark of modern look.

The modern trains are sometimes achieved through the use of different types of materials such as metal, plastic, colored cloth, or a combination of all three. The element that stands out is the fact that artists use their imagination to invent new forms and designs that reflect the modern world in its complexity. It may look like a wall sculpturerather then a flat image. It's more like a modern piece of art that you can display proudly. They seem to set the tone and decor of your home to be defined.

A room without a modern wall clock to look done. Put hang one on the wall and it instantly turns your house into a home. You can make a formal elegant style or fun lighthearted atmosphere. No matter what your choice, there will always add a sleek and modern appeal to your room.

Another positive aspect is that itPrice for every home match. You can find them as cheap as $ 20.00 or very expensive. They also hang a sync. They are very light weight, so all you need is a hammer and a screw, and it is up to the wall for all to see in a few minutes.

Some designs have no hands, but they all have vibrant colors and bold lines. There are some watches when they brought to light, changing their colors in shades. I ran across a company that custom design of the clock. SimplyChoose a color that you like and it will make your face with this color. One thing is for sure, you will not find a theme to the contemporary wall clocks that feature animals, flowers, or members of your family.

The development of electronics during the 20th Century to watch parts of the movement without ever conducted. Some newer clocks can be reset to radio or Internet time server, which is based matched the national atomic clocks.

For my formal dining room, I decided to make acontemporary grandfather clock. Believe me, it is not easy to resemble the grandfather clocks that come to mind. It is made of chrome and metal and is the focal point of the room. When guests come from him is always a big topic of conversation. It's glockenspiel and makes my dog around in circles run hourly. I must admit, sometimes I'm so worn out I turned the sound.

If you need a house warming gift is, this definitely should be your choice. I am sure you willable to accurately highlight the correct clock and stressed that its standard equipment.

For a timely display of elegance, function and call to make this the right choice for you. Take this day to the original style and grace, in the lifeless wall. You must remember that waiting time.