EDO (Enhanced Data Output) and FPM (Fast Page Mode) modules can be buffered or unbuffered. Buffered modules contain a buffer to help the motherboard cope with the electrical load when the system has a lot of memory. DDR (Double Data Rate) and SDRAM (Sync Data Random Access Module) modules are either unbuffered or registered. Registered modules have a register that delays the transfer of data by one clock cycle. Unbufferred modules are generally found in desktops and laptops.

Registered modules have additional registers, which delay all addressess transferred to the module by one cycle. This is done to decouple the ram chips from the memory bus, so a module can have more chips (the bus load will not increase if more ram chips are present). Because of that, registered modules are available in higher capacities, but of course you can't use these high capacity modules on a bx-based board.You can recognize registered modules physically by looking at them. See similar questions...

The buffered and unbuffered modules are not interchangeable and even use slightly different printed circuit boards (PCB’s). If you try to install the wrong type, the first notch on the bottom of the module will be offset. You can determine if the module is buffered by looking at the leads next to the first notch. If the leads are evenly spaced, the module is buffered. If the leads are not evenly spaced (a larger PCB area next to the lead) the module is unbuffered. See similar questions...

High density DIMMs have lots of chips on them and therefore possess a higher capacitive load on the address and control signals in comparison to lower density DIMMs. Some designers use re-drive buffers on the DIMM to boost the signals to reduce system loading when compared to the same high density module without buffers. See similar questions...

Ans: Registered memory contains registers or buffers that take care of signal distribution to all the DRAM on a DIMM. Because the buffers take one full clock cycle (2 DDR clock cycles) to buffer the control and address signals Registered memory has a higher latency than unbuffered memory. The tradeoff is that buffering increases the reliability of high-speed data access which is critical for server operations. See similar questions...

A buffered module is very similar to a registered module. Buffers re-drive the signals through the memory chips and allows for the module to be built with more chips. Buffered and unbuffered memory chips cannot be mixed. The design of the computer memory controller dictates whether memory must be buffered or unbuffered.. See similar questions...

A buffer is a device used on EDO or Fast Page Mode modules. A register is used on SDRAM modules. Registers and buffers “re-drive” or “amplify” signals as they enter the memory module. See similar questions...

Indeed. To enable this, you'll need to use a pair in slots 1 & 2 (white tab) and/or 3 & 4 (black tab) as shown in this diagram. (1 & 3 are the vertical slots, 2 & 4 are the diagonal slots.) See similar questions...

That depends. If you want to use more than three double-sided modules, it is probably a good idea to use registered memory, because the "capacitive load" on the memory bus can get quite high, and you might experience stability problems. If you use three or less modules, usually registered memory isn't required, and you shouldn't buy it - it is more expensive and slower. Asus Germany recommends to use always registered modules if you use three or more ram modules in boards with the bx chipset. See similar questions...

While most PC’s will only accept unregistered SDRAM, there are some that accept registered SDRAM. Keep in mind that when you install registered SDRAM, all of the modules installed in your PC must be registered, because unregistered and registered modules are not interchangeable See similar questions...

Important Note: Your humble authors got tired of writing dry formal technical prose in the rest of this document, and succumbed to the temptation to try to be funny in parts of this appendix. Sarcasm abounds here. Please do not take any of this personally! The humor-impaired should interpret my comments not as attacks on them, but as an attempt to make fun of myself for being impatient with you, my devoted and valued, if sometimes demanding, users. See similar questions...

Consult your user/owner's manual for details about the original memory configuration and capacity. If you've misplaced the manual, you may be able to contact the retailer where you bought the PC from. If you have a hand-me-down PC or inherited a pre-owned PC, you probably may not have the user manual or know any detail of the original memory configuration or the memory configuration may have been changed. See similar questions...

In non-buffered mode all read-modify-write operations are done directly on the LCD-controller memory. (Library default configuration for optimized RAM consumption). In buffered mode all read-modify-write operations are done on a RAM copy of the screen content. When all the updates have been completed by the high-level function, all the changed bytes are flushed to the LCD-controller memory by using write operations only. See similar questions...

All loan officers who are employed by supervised lenders or loan brokers, whose primary job responsibilities include direct contact with mortgage applicants and who accept applications for and originates, negotiates, solicits, arranges for or obtains mortgage loans. Registration is only required of those loan officers who will have direct contact with Maine consumers. See similar questions...

Obviously we don't like memory leaks in LessTif. A couple of tests have been done with commercial memory analysis tools, some of the apps in the tests/ tree help tracking some leaks as well. We believe we're not doing really bad. In fact we did run some simple comparisons with official Motif 1.2. See similar questions...

For many years, screen memory meant a sensory memory fragment that carried the emotion of the entire event. Thus a child who was staring down while being scolded might later only remember his or her shoes, along with a vivid sense of shame and anger. Or a whiff of cinnamon might evoke all the feelings of watching grandmother cook. In mind control terms, and more increasingly in general usage, a screen memory is a memory that hides, or screens, another memory. See similar questions...

Virtual Memory makes up for the lack of RAM in computers by using space on the hard disk as memory, Virtual Memory. When the actual RAM fills up (actually its before the RAM fills) then virtual memory is created on the hard disk. When physical memory runs out, the Virtual Memory Manager chooses sections of memory that have not been recently used and are of low priority and writes them to the swap file. See similar questions...

The first 640 KB of your RAM are called "conventional memory" under DOS. DOS can only address this first 640 KB of RAM directly, the other part won't be recognized if you don't load a memory manager like himem.sys. Most programs need a special amount of conventional memory to run, so it would be good to have as much free memory as possible within this 640 KB. How can you do this? Well, that's not quite difficult, but it is not fairly easy. See similar questions...