rambus

Rambus memory is a high-performance, chip-chip interface technology of the next generation of storage products, it enables the next generation of processors to play the best function. At present, the RAMBUS memory can provide 600, 800 and 1066MHz three kinds of speed, the main currently has 64m,128m,256m,512m four kinds of specifications. RAMBUS Inc. claims that

memory mode, common memory is: FPM RAM, EDO RAM, SDRAM, DDR Ram, Rambus DRAM, as shown in Figure 1. From the outward appearance, the difference between them is mainly the length and the number of pins, as well as the corresponding gap on the pin. FPM Ram was popular in the 286, 386 era, when it used 30pin FPM RAM memory with a capacity of only 1MB or 2MB. And in the 486 era, and a few 586 computers also use 72pin of FPM RAM memory. EDO RAM is main

Http://bbs.xiyuit.com/thread-4143-1-1.htmlplease stay tuned for matching the CPU bandwidth and memory bandwidth! Don't let the memory slow down the CPU. Intel's CPU has certain requirements on memory bandwidth since P4. Why did Intel have to push Rambus to match P4? This is because both SDRAM and ddr ram are insufficient to meet P4's needs. For details, FSB is P4 of 533 (external frequency: 133), and the data bandwidth requirement is 4.3 Gb/s (Yes In

will attach to the gold finger, in the use of a period of time will again cause gold finger oxidation, repeat the same failure, installation can be more than a few memory slots. In addition, we also apply brushes to remove the dust from the memory slot, then fold it with a hard, clean sheet of paper and move it back and forth in the memory slot to allow the sheet to wipe the metal from the memory slot and then install the memory bar. At the same time to carefully observe whether there are chips

Preprocessor) DB: Device Bay, device plug-in rack DMI (Desktop Management Interface) DOT (Dynamic overclocking technonlogy, dynamic overclock Technology) DPP (direct print protocol, direct print protocol Drcg (direct Rambus clock generator, direct Rambus clock generator) Dvmt (dynamic video memory technology, dynamic video memory technology) E (economy, economy, or entry-level, entry-level) EB (expansion b

require any changes from memory chip manufacturers, the previous transition from SDRAM to DDR or Rambus requires support from memory chip vendors. More importantly, it provides a large space for future memory technology upgrades, such as the future of ddr3 investment in application, FB-DIMM technology can also be through the adoption of ddr3 dram chip and "Upgrade ".And there is backward compatible words in the promotional materials of the FB-DIMM, t

. Each SRAM storage element consists of 6 transistors, and the DRAM storage unit consists of a transistor and a capacitor.Commonly referred to as SDRAM, DDR SDRAM belongs to the category of DRAM, they use the CPU external memory controller synchronization clock work (note, not the CPU operating frequency). Compared to SDRAM, the DDR SDRAM uses both the rising and falling edges of the clock pulses to transmit data, thus doubling the frequency of data transmission in the case of constant clock fre

virtual memory, the instability will increase further. In addition, the design of Windows itself is that once a process is found to be inactive, the memory space allocated to it is mapped to the swap file, as much as possible to empty out the physical memory to the other activity, rather than using the physical memory to start using the swap file. Because if you wait until the physical memory is exhausted, it is too late. In the preparation of a lower computer is bound to cause data transmissi

signals can be delivered. The same interface with the DDR memory also uses the Dimm,sdram interface is slightly different, the SDRAM DIMM is 168Pin DIMM structure, the gold finger each side is 84Pin, the gold finger has two card ports, is used to avoid inserting the slot, the error will insert the memory backwards to cause the burning; DDR The DIMM uses a 184Pin DIMM structure with a 92Pin finger on each side and only one card on the gold finger. The difference between the number of cards is th

older computers. In PDA/handheld computers, this Edo memory is still widely used. SDRAM, sychronous dram, synchronous memory. Early PC memory clock and CPU external clock were not synchronized, which resulted in a collaboration time each time data was read and written, with low efficiency, while SDRAM can run in sync with the external clock of the CPU to improve read and write efficiency. The Pentium to Pentium III era has been the master of sdram pc, the 168pin dual-sided pins of memory is sti

timely manner, the CPU has long been in a waiting state, the hardware resources are idle, the performance of nature can not play. For ordinary PCs, because of the single processor system, the current memory bandwidth has been able to meet its performance requirements, and for multiple servers, because it is a multiprocessor system, its memory bandwidth and memory capacity is extremely hungry, the traditional memory technology has been unable to meet its needs. This is because the current common

"When you are 21 years old, if you forget her 20 birthday, will she be angry?""We don't have the word ' single dog ' in The age of single dogs ..." Windows 98 was released on June 25, 1998, and it was not until around 2006 that it faded out of sight.At one point Windows 2000 and Windows XP were hard to shake in people's minds. (There is a detail, the English version of the Win98 theme is not like the Chinese version only the song body, the theme adopted a rich font.) ) for us,It is a leisurely t

without learning the lesson-Rambus and IA64 are relatively less open. Visible, not open, and more likelyDo not make money. Like the PC architecture, the OS is home to the DOS era. The reason why ms is developed is windows. At that time, it did have a prominent advantage, so it took upAs for the Standard upgrade, Ms has achieved the actual monopoly of pc OS. Ms's success lies in its successful monopoly on PCThe OS market only occupies a monopoly posit

other memory standard-Rambus DRAM. In many high-end graphics cards, high-speed ddr ram is also provided to increase the bandwidth, which can greatly improve the pixel rendering capability of the 3D accelerator card. There are also many types of Rom. The difference between the prom and the EPROM is that the prom is one-time, that is, after the software is filled in, it cannot be modified. This is an early product and cannot be used now. The EPROM is u

value between the coil within the inductor will be minimal. Magnetic Beads are generally only applicable to high-frequency circuits, because at low frequencies, they basically maintain the complete characteristics of inductance (including resistance and resistance components), which may cause slight loss on the line. At high frequencies, it basically only has the resistance component (J ω L), and the resistance component will increase as the frequency increases. For example, some RF circuits, P

longer the length of the magnetic beads, the better the inhibition effect.Difference between magnetic beads and inductorInductance is an energy storage component, while magnetic beads are an energy conversion (consumption) device. Inductance is mostly used in the power supply filter loop, focusing on the suppression of conductive interference; magnetic beads are mostly used in signal loop, mainly used in EMI. Magnetic Beads are used to absorb ultra-high frequency signals, such as RF circuits, P

Yesterday we completed the mini6410 U-boot automatic identification of 128 MB and mb ddr memory. Here we record the principles. 1. Understand the principles of DDR SDRAM First, you must understand the principles and external interfaces of ddr sdram.Here are some classic articles on the Internet: Expert explanation: Memory working principle and development history Memory principle and timing (SDRAM, DDR, DDR-ⅱ, Rambus DRAM) -----------------------

. This is the most widely used memory in computers, and it has a cost advantage. In fact, it beat Intel's other memory standard-Rambus DRAM. High-speed DDR is also available on many high-end video cards.Ram to increase the bandwidth, which can greatly improve the pixel rendering capability of the 3D accelerator card.There are also many types of Rom. The difference between the prom and the EPROM is that the prom is one-time, that is, after the software

the memory. Block write is helpful for filling the foreground or background. Sgram greatly accelerates data exchange between memory and bus. (For example, Lili s680 and banshee) 　　 Mdram (multibank Dram): Multi-clip dram. Mdram can be divided into multiple independent effective segments, reducing the time consumption of each process during display refresh, video output, or graphic acceleration. 　　 RDRAM (Rambus DRAM): it is mainly used for high-spe

SDRAM. The difference is that it can read and write data twice at a clock, this makes the data transmission speedDouble. This is the most widely used memory in computers, and it has a cost advantage. In fact, it beat Intel's other memory standard-Rambus DRAM. In many high-end graphics cards, high-speed ddr ram is also provided to increase the bandwidth, which can greatly improve the pixel rendering capability of the 3D accelerator card.There are also