Generally all DDR is backward compatible and can run at any bus speed slower than it is rated to run. For example if your PC has a 266MHz FSB (Front Side Bus), you will need PC2100 266MHz DDR. If your PC has a 266MHz FSB, you can use PC2100 266MHz or PC2700 333MHz DDR. All PC’s that accept PC2100 DDR will also accept PC2700 DDR; however your memory will only run as fast as the slowest link in your system.

PC2100 DDR is designed for use in systems and motherboards which require a 133MHz front-side bus. While the system or motherboard may operate a 133MHz front-side bus, its effective front-side bus speed is 266MHz in DDR operation. To get the effective front-side bus speed of a DDR system, double the operating frequency. PC2700 DDR is designed for use in systems and motherboards which require a 166MHz front-side bus, with an effective front-side bus speed of 333MHz.

DDR memory has been manufactured to be backward compatible so you can add faster memory modules to your machine. For example, if you install a PC3200 module alongside an original PC2700 module the memory will wor and be fully compatible but you will not gain any performance benefit, as the PC3200 module will be clocking down to PC2700 to run alongside the original PC2700 module installed.

Ans: The numeral portion of DDR memory represents the "MB/s" of the RAM, so PC2700 is rated at 2.7GB/s (2700MB/s) and so forth.

Although these are all types of double data rate (DDR) memory, the varying numbers refer to the different speeds of memory your computer was designed for. Crucial no longer carries PC2100 (DDR266) memory, but PC2700 (DDR333) memory and PC3200 (DDR400) are backward-compatible with PC2100. Memory is designed to be backward-compatible, so generally speaking, you can safely add faster memory to a computer that was designed to run slower memory.

There are many ways performance might be improved. Sometimes data processing is to blame for slowdowns (e.g., layout computation, item processing). In these cases it can often help to either find ways to move data processing out of an "inner loop" condition (if possible) or to find ways to process fewer data items by limiting operations to a filtered set of data.

Since PDL is just a Perl package you need first of all an installation of Perl on your machine. As of this writing PDL requires version 5.004 of Perl, version 5.004_4 or higher is strongly recommended. More information on where and how to get a Perl installation can be found at the Perl home page http://www.perl.com and at many CPAN sites (if you do not know what CPAN is check the answer to the next question).

The new smooth blue or green wrapping on the Start menu, Task Bar, and on all of the windows are part of the new visual design for Windows XP. This feature can be turned off to speed up your computer, however this will revert all windows and menus back to the gray rectangular design of Windows 98 or 2000. If the My Computer icon is on your desktop, right-click on it. Otherwise, go to the Start menu and right-click on My Computer. Select Adjust for best performance. Click Apply.

First, update your video drivers. Secondly, again make sure you have the latest drivers! It can make a HUGE difference. Then you could try a different resolution, or even just try changing the colour depth. On my machine if I run at 32bit colour depth everything runs slowly, but under 16bit its smooth as a baboons big red butt.

A few years ago it was popular for runners to drink a cup of coffee before a race because caffeine will stimulate the release of fatty acids into the bloodstream. The athletes were counting on using the fatty acids for fuel, rather than glucose, "saving" the glucose for later in the race when it might give them a second wind.

No, even though Windows Me ships with a newer version of DirectX 7, there is little speed increase in any game we have tried out, the main difference is stability across all fronts.

Each time SETI@home launches, it optimizes itself for the current monitor color depth (256 colors, Thousands, Millions). If you change the color depth while SETI@home is running, it may slow things to a crawl. It should run reasonably at any screen depth, but it will run somewhat faster at lower screen depths (256 colors) than higher ones. Screen resolution (800X600, 1024X732, etc.) should have negligible effect on speed.

Each instance of the engine is uniquely identified, and as such you do not want to copy the config from one folder to another. Simply install a new instance of the program into a different directory. Register it with your email address, and it will be up and running using your hyperthreaded or second processor. Note: It should be noted that when running two instances TSC on a dual processor machine you should not attempt to have them both in your start up file because both will not auto start.

Give me a break. It's impossible to do everything and support everything. MT-NewsWatcher doesn't support System 6 or Sytem 7 and it never will. If you're still using System 7, there's tons of stuff you can't do, and running MT-NewsWatcher is only one of them. MT-NewsWatcher requires Mac OS 8.1 or later, with version 1.0.3 or later of the Appearance Manager extension installed. Earlier versions had bugs, or too limited functionality to be useful. MT-NewsWatcher 3.

No. A virtual machine requires a set of core libraries to run applications. Some of these libraries are packaged as a part of a CLDC implementation along with the virtual machine. In addition, the capabilities of CLDC can be extended by adding profiles such as the Mobile Information Device Profile (MIDP) and/or optional packages.

Arabians are smaller and slower that Thoroughbreds. An Arabian will run six furlongs 5-6 seconds slower than a Thoroughbred.

The level of detail displayed in the graphics has a significant impact on how fast the game runs. Experiment with turning Graphics options (Graphics command on the Options menu) on and off to find the right combination of graphics and speed. For example, set Image Quality to Low (Faster), turn off the Textured Sky, Shadows, and Allow Damage options. You can also try setting Scenery to Sparse (Faster). Turning off the dashboard and steering wheel in cockpit view can also make the game run faster.

Runtimes are affected by many factors, including the size and structure of your decision tree, the size of your spreadsheet (if applicable) and the DPL optimization settings in effect. Click here for tips on reducing runtimes. DPL supports the Excel functions that are most commonly found in cash flow spreadsheets. If you see an "@na" error after converting, your spreadsheet may contain functions not supported by DPL. See the note on Excel functions in DPL for more information.

CalFUSE requires two things of your machine: memory and I/O. To help the program run more quickly, turn off other memory-intensive applications, especially IDL. If your computer has a fiber-optically-coupled disk, take advantage of its increased speed by moving your data and calibration files there. We've seen this problem before. Typing "make -e install" instead of "make install" should do the trick.