No, you can't. DDR memory is not backwards compatible. And you most likely can't use EDO. The bx chipset indeed has support for EDO memory, but most boards don't (an exception to that are the bx based boards from supermicro). If you really happen to have a board which has support for EDO modules (check your manual) you can't mix EDO rams with PC66/100/133 sdrams, and you can only run at 66mhz FSB (that is, you'd have to use a P2 up to 333mhz or a Celeron up to 766mhz).

No. EDO memory is designed for Pentium style motherboards (64 bit) and will cause errors or no-boot if used in a 486 system. Install 72-pin non-EDO memory.

EDO memory has a faster read timing than FPM but has the same write timing. FPM is commonly used in 386 and 486 computers, while EDO is for Pentiums only. Apple computers should be configured with Fast Page Mode memory. EDO memory will not work in 486 computers. Parity memory, which is actually Fast Page Mode with 4 bits for parity checking, works in all computers. If your system does not use parity, it will ignore it.

No, DDR2 DIMM memory modules are not backwards compatible with DDR DIMM, due to incompatible pin configurations, core voltage, and memory chip technology. DDR2 modules are designed with a different "key" in the edge connector to prevent insertion into incompatible memory sockets such as DDR motherboard. A DDR2 SDRAM DIMM will not fit into a standard SDRAM DIMM socket or a DDR DIMM socket. DDR2 modules use a 1.8V power supply, providing a big power saving over the 2.5V DDR modules.

In most cases, you can add the new module to your computer without removing the old module. In some situations, you'll need to remove the lower-density modules and replace them with high-density modules to reach the maximum memory capacity. For example, if your computer has two slots and already has a single 64MB module and the maximum capacity is 512 MB, you must remove the 64MB module and add two 256MB modules to maximize your memory.

Yes. RAMCHECK's optional DDR 184-pin Adapter (p/n INN-8668-6) supports modern 184-pin DIMM DDR modules and is at the heart of our new DDR Series. A low-cost converter (p/n INN-8668-6-1) supports 200-pin S.O. DIMM DDR modules. Due to the importance of DDR technology, we have introduced the RAMCHECK PLUS bundle, a combination package of RAMCHECK and the DDR adapter.

SDRAM (single dynamic randomn access memory) is the older style of memory with 2 notches on the stick. The speed of SDRAM is either 100 or 133 MHz (older SDRAM was 66 MHZ - do not mix with pc133 memory !) DDR (double dynamic rate) memory has only 1 notch. The DDR memory will read twice (double) as much information as the SDRAM - the speed of DDR is from 266 to 400 MHz

Actually, there's no such thing as dual-channel DDR memory. There are, however, dual-channel platforms. If you have a dual-channel platform, simply purchase your DDR memory in pairs. However, be very careful to order two modules with the exact same specifications; the modules must be identical to each other to perform correctly.

Yes. MOTM Modules are made by Synthesis Technology. We both use standard voltages for audio, control and pitch signals (1V/Oct). So there is no problem using the two types of modules together. The difference is the power supply connectors and panel width. MOTM modules are 8.75 high (5U) just like ours but come in width multiples of 1.75". This will leave a gap when placed in a Synthesizers.com cabinet which is expecting module widths in multiples of 2.125 like Moog modules.

Modcan and Cynthia modules have different panel dimensions (9" tall vs 8.75" for the .com and 2.25" wide vs 2.125" for the .com). This prevents using our standard cases to house both types of modules. Modcan and Cynthia modules use +15, -15 volts just like Synthesizers.com systems but the connector is different and special power cables will be needed. Modcan and Cynthia modules use banana jacks instead of 1/4" jacks so you can use our Banana Jack Interface to interface the two types of modules.

Your system board will support this new memory if you have the PE desktop model. Please check the parts list to verify which memory speed your system is equipped with. If you have 266MHz memory and wish to upgrade, please ask your store technician to help you upgrade to 333MHz.

Ans: To answer this question you really have to break down how it is that companies "certify" or "match" Dual Channel memory modules. What is Matched or Certified Dual Channel Memory? Companies like Corsair, OCZ, and Mushkin produce what they call "dual channel" memory, or Dual Channel Kits. These are sold in pairs, so for instance you might buy a 512MB or 2x256MB Dual Channel Kit, which consists of 2 sticks 256MB DDR memory paired together by the manufacturer.

The idea behind pre-compiled library modules was to cut down on the time taken to compile your game, back in the days when PCs were steam-powered and slow. Nowadays, PCs are much much faster, and the compilation time saving is tiny, much less than the period it would take you to learn how the module system is meant to work.

The amount of memory rdiff-backup uses should not depend much on the size of directories being processed. Keeping track of hard links may use up memory, so if you have, say, hundreds of thousands of files hard linked together, rdiff-backup may need tens of MB. If rdiff-backup seems to be leaking memory, it is probably because it is using an early version of librsync. librsync 0.9.5 leaks lots of memory. Later versions should not leak and are available from the librsync homepage.

No. YOU MUST REMOVE the DDR adapter from RAMCHECK in order to test the 168-pin SDRAM (or EDO/FPM) modules. DDR and SDRAM use different voltages, and the DDR adapter further loads the SDRAM test bus. To avoid flexing damage to the DDR adapter, please allow the DDR adapter to cool down prior to removing it from RAMCHECK, and carefully remove using two hands .

Yes. A module's size in megabytes is usually referred to as its "density." You can use DDR modules of different densities in the same system. For example, you can use one 32MB module, one 64MB module, and one 128MB module. To find the total memory in a system, add together the memory of each module. In the example above, your total memory is 32MB + 64MB + 128MB = 224MB. The reason for the hard drive activity is limited memory.

Mac computers and printers use a variety of memory, which is called "SIMMS" or "DIMMS" or "VRAM". Most of my memory is sold from a Mac Memory Web page. I provide some descriptions there of memory for most of the systems I sell, but not for the printers. For printers you'll probably have to look at Apple's manual or an Apple document. While I try to identify issues and problems when I can, it is up to YOU the customer to determine what memory and how much memory you need.

Day Delegate Rate. This is the cost per person in hiring the conference room. Day Delegate Rates normally come as a package typically including room hire, teas/coffees and lunch. DDR packages will vary from operator to operator and package to package.

A full detail explanation and product guidelines for memory modules and DDR applications can be found in our Applications section under Memory Modules.