IBM Computer, Laptops and Servers

Can't get your head around your DDRs, clock speeds, Gigabytes or latency laptop battery

Learn how to install you RAM in your computer - and the precautions you should take... RAM - (Random Access Memory) Short-term memory for your computer. Memory, or RAM, is the oil that makes your computer run smoothly. It is used in every operation your computer performs, from simply pressing the mouse button to running complex game graphics. It is also one of the most cost-effective and affordable investments in upgrading to your computer, producing both subtle and profound improvements on hundreds of daily processes, applications and tasks. If you work with digital media of any kind such as image manipulation, video and audio recording and production, and CAD (computer aided design) then having ample memory is essential to enable your computer to work at its best. It's not just these processes that rely on your computer's memory - desktop publishing, databases and all other manner of programs use their quota of memory to run. thinkpad

Gamers also know the importance of running as much memory as possible - as games develop as an astounding rate in terms of polygons, framerate, textures, physics engines and general on-screen action, gamers skill and responsiveness is limited by how fast their computer is able to process the data. Most graphics cards such as nVidia and ATI offer dedicated graphics memory and although this takes some of the strain off the RAM, most serious gamers still invest in the best memory their computer can take. Check out our memory upgrade guide - full of hints and tips about buying and installing more RAM. microsoft

It happens to the best of us. After staring at the box longingly in your car you've finally got home and pulled the shrinkwrap from your new game or program. You toss the novice manual to the floor and with a great amount of reverence place the disc in your computer. So far so good - the auto-install box pops up and you click the sequence of Next buttons impatiently, slightly embaressed at being forced to retrieve the manual to find the installation serial key. The progress bar progresses jerkily and waits a disproportionately long time on the final bit. You keep your cool in the knowledge it will be worth it. There... you're done! laptop computers

But something isn't working the way it should... You read the back of the box - you don't have enough memory to meet the minimum requirements. If your computer has been dragging its heels a bit lately, it could be time to upgrade your memory. Memory is one of those things that you really become aware of when you don't have enough. Here are some of the telltale signs that you need to upgrade your RAM: laptop computer

• Programs and games crash desktop computer

• Games are jerky, sluggish and unresponsive notebooks

• Your computer slows down when you run many programs at the same time lenovo

• Any number of error messaging pertaining to memory and virtual memory hard drive

• Imaging, CAD, video, modelling and sound applications take forever to import, export or apply filters - especially when you have multiple projects open at the same time travelstar

Some programs and applications use a lot of memory... gateway

• Photoshop, Dreamweaver, Fireworks and the rest of the Creative Suite family laptop parts

• Rich graphic games such as Bioshock, Oblivion, Crysis and Call of Duty 4 software

• Databases that process and exchange a lot of data hard drives

• Video editing and post-production software electronics

• Audio recording, mixing and production applications canon

Computer memory (otherwise known as RAM) comes in many different speeds and sizes so always check your computer's exisiting memory first before buying any new modules or your computer might not even boot up properly! There are four major things to be aware of when buying new memory to upgrade our RAM. Here's the low-down on the techie jargon... desktop pc

Memory Type - The type of memory technology your computer uses, therefore defining compatibility. Before anything else you need to determine the type of memory currently in your computer. It comes in many flavours, DDR, DDR II, DD III etc. Unless you're into your tech specs it's not necessary to know the difference, only that your computer will support a specific type and that's one type you need. Laptop memory is also different from standard PC RAM. desktop computers

Memory Size - The capacity of your computer's short-term memory The most common metric of memory is size in GigaBytes GB, or less impressively MegaBytes MB, and it's a definate case of bigger is better. The more RAM your computer has, the less it needs to read and write to the main hard drive during games and applications. Memory generally comes in 256 MB, 512 MB and 1 GB (which is 1024MB) and with most computer motherboards having 3 or 4 memory slots, it's possible to have up to 4GB firing your system. A word of warning however, if you're running a 32bit Windows operating system then you can only actually use a maximum of 3GB. think pad

Memory Clock Speed - The speed with which memory can communicate with your computer Quite simply this is how fast a module of memory can communicate with your computer. Sometimes called Bus Clock Rate, it's measured in MegaHertz and the most common clock speeds are 667 MHz, 533 MHz, 400 MHz, and 333 MHz. A general rule of thumb is the bigger the number, the faster and better your memory but if you're just adding more memory then it's a safe bet to buy exactly the same clock speed of your current memory. Dedicated memory for gamers can be be ridiculously fast in order to fuel their appetite for intense frag action and explosive physics. You are limited in speed by your motherboard so investing in super fast memory will be of no use if your motherboard is a standard office model. Another word of warning - fast clock speeds incur more latency (see below) much to the frustration of high-spec gamers; there are hundreds of website you can visit to get more information on this, and a good article here which is still relevant despite being published in 2005. repair

Memory Latency - How long the computer and memory waits for each another to catch up You could think about memory latency as people working at a drive-thru restaurant; you place your order then wait for the food to be ready. The lower the timings are, the faster the computer (and quicker your order comes) is able to get data from the memory, and the faster the rest of the PC will ultimately be. Unless you are investing in specialised, dedicated memory for serious game enthusiasts then don't worry too much about latency. data recovery

So much for a memory upgrade guide... you thought there was just once kind of memory and now you're even more confused! But wait and we'll show you how to identify the memory you need. There are a few things you'll need to do... cisco

people found this helpful keyboard

• Paul Jameson Wheelhouse

• 22/02/2008 monitor

• 5 out of 5

>p>This is a no hassle projector. Clear and bright it works straight out of the box and copes automatically with both 4:3 and 15:9 screen formats. Well done Acer>/p> desktop

ANSI lumens is a measurement of the overall brightness of a projector. Because the centre of a projected image is brighter than the corners, ANSI lumens is the most accurate representation of the image brightness. ANSI lumens are calculated by dividing a square meter image into 9 equal rectangles, measuring the lux (or brightness) reading at the centre of each rectangle, and averaging these nine points. infosys

If you're concerned about picture quality, don't just look at brightness. Contrast is just as important. In short, it's a measure of how well the projector can block out light from the lamp, ie. how black is the black This is especially important for home cinema applications. refurbished laptops

An average contrast ratio is about 400:1 for LCD projectors, whilst some DLP projectors have contrast ratio of 4000:1. wipro

'Keystoning' is the name given to the effect on the projected image when the projector sits below or above the centre of the screen. Keystone correction counteracts this effect by digitally compressing the image at the bottom or top, resulting in a squarer, more professional image. lap top

A standard lamp lasts for about 2000 hours of projecting. That's a lot of presentations, and with lamps sold at ý150 and ý:500, it works out at between 8p and 25p per hour of use. Projectors with higher lamp half lives are less likely to cause you a problem in the middle of a presentation when the projector gets older and used more, and generally represent better value per hour of use. However, with all projectors a sharp knock can put the lamp out of action no matter how old it is. Environmental factors can also effect lamp life so it's prudent to have a spare on hand. refurbished

DLP technology is a revolutionary display solution that uses an optical semiconductor to manipulate light digitally. It is a highly reliable, all-digital display chip that delivers the best picture across a broad range of products, including large screen digital TVs, and projectors for business, home, professional venue and digital cinema. memory

3LCD is the most widely used projection technology system in the world. This is how 3LCD technology works: white light is split into red, green, and blue using two mirrors that transmit light with a certain wavelength. Each colour is then passed through a dedicated LCD, before being combined with the other colors in a prism. The image is then ready to be projected onto the screen. intel

Lens shift is generally a feature of high-end projectors or specialist home cinema models. Lens shift has a similar effect to 'Keystone correction' except that the effect is achieved by physically adjusting the angle of the projectors lens to square up the image. This is a better method of producing a square image, rather than using keystone correction as the correction with lens shift is achieved optically (rather than digitally) resulting in no loss of quality as400

Lens shift can also be useful for fine-tuning the position of the projected image on your screen averatec

In general, a ratio is a way of concisely showing the relationship between two quantities of something. The most formal way of stating a ratio is by separating the two quantities with a colon (:). A ratio is a comparison of two numbers. We generally separate the two numbers in the ratio with a colon (:). Suppose we want to write the ratio of 4 and 3. We can write this as 4:3 (common ratio for data) or 16:9 (common ratio for video material) hardware

The resolution is the accuracy of the image that the projector casts. Most projectors fall into two categories - SVGA (800 x 600 pixels) or XGA (1024 x 768 pixels). Similarly, most computers output a signal which is either SVGA or XGA. dual xeon

(Home cinema users - please note the majority of dedicated home cinema projectors project a native 16:9 (widescreen) image and fall into one of three resolution categories - WVGA (854 x 480 pixels), WSVGA (1024 x 576 pixels) or WXGA (1280 x 720 pixels). The 'W' stands for 'Wide'. storage

If you use a PC, you can check which signal you're using. Go to Control Panel and select 'Display', then click the Settings tab. Next to 'Screen Area' you'll see a slider which shows what resolution you're using. If it's 800x600, you use SVGA. If it's 1024x768, you use XGA. You can move this slider and press 'OK' to see the difference between the resolutions. seagate

If you use a Mac, you can check which signal you are using by going to the 'Monitors' or 'Monitors and Sound' control pannel (depending on which Mac OS version you are using). Most projectors sold today are XGA. This is because most computers sold today are moving to XGA resolution as standard. You can project an SVGA output signal with an XGA projector without significant loss of quality. However, projecting an XGA signal with an SVGA projector can make your presentation look unsightly. computer sales

The time it takes for a pixel to turn on and off. Response time is a good indication of how fast motion such as video or computer animation will appear on the projected image. computer hardware

Are you taking your projector on the road or leaving it in the board room If you are on the move, you'll appreciate having a projector that's as portable as you can afford. Thankfully, today's projectors are smaller than ever, with the lightest at around 0.9kgs and easy to carry over the shoulder. However, the desktop models still have more features and represent better value if the projector is going to stay in one place. printers

Projection screen with tripod - 1:1 - Matte White S - RAL 7021 Our Part: SCRN1566 | Manufacturer Part: 10400070 0 in stock technology

Ordered on request £44.96 £52.83 Add to order Net Weight: 2.3kg mainframe

• More Projectors
• More ACER Projectors

• Find Similar Products
• Email Colleague

» Catalogue » Computers » Laptop » Laptops » ACER Laptops samsung

• Product Code: ACEKIT09 computer repair

• Manufacturers #: LX.E930Y.116 used computers

• Availability: network