In the age of the internet, people are used to being able to surf the web instantaneously. But as some of you may know, that cannot always be the case. As the speed of the central processing unit (CPU) starts to increase, the gap between the CPU speed and main memory begins to widen and performance comes to a slow. In order to combat this issue, cache memory, also known as CPU memory or CPU cache, was created. Cache memory stores frequently used data and allows the CPU to access that data from the main memory quicker. It is the fastest memory, but cache memory has a lower capacity than other types of memory.
 
Most modern server Central Processing Units have three independent caches. The instruction cache that speeds up executable instruction fetch; a data cache that speeds up data fetch and store; and a translation lookaside buffer (TLB) that is used to speed up virtual-to-physical address translation for executable instructions and data. The TLB is not directly related to the CPU caches, it is part of the memory management unit (MMU).    
 
Computer cache memory is divided into three levels.  Level 1 (L1) cache, or primary cache, is the smallest and is the first one to be searched by the CPU. If the instructions are not found in L1, Level 2 (L2) is searched. L2 cache, or secondary cache, has more space than L1 cache. Level 3 (L3) cache, or main memory, is larger and slower than L1 and L2 but is still double the speed of RAM.
 
If the cache has the information that the CPU needs already loaded onto it, it is called a cache hit. If there is a failure in reading or writing the data in the cache, it is called a cache miss; the CPU will then access the main memory, and this takes longer. There are three types of cache misses: instruction read misses, data read misses, and data write misses.
 
In addition to cache memory, there are other ways to increase the memory of a computer or system. For example, increasing RAM and/or ROM, utilizing OTP memory, or even adding external memory to the system will help.


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Other than the price or what brand you like more, one of the biggest factors in choosing your next smartphone or computer should be the RAM, the Random-Access Memory. This is the device’s main memory. There are two types of RAM, DRAM and SRAM. Normally, the RAM value you see for your device’s specs are the DRAM.

DRAM or Dynamic Random-Access Memory is a type of memory that is used to store data or program code that a computer processor needs to function. Each bit of data is stored in a storage cell made of a capacitor and transistor and organized into a rectangular configuration. In general, RAM allows the PC processor to access any part of the memory directly, rather than having to go sequentially, enabling faster data access than hard disk drives or solid-state drives. DRAM is dynamic in that it needs to be refreshed or given a new electronic charge every few milliseconds to compensate for charge leaks from the capacitor.

DRAM is advantageous in that it’s simple, fast, and low-cost in comparison to many other types of memory. However, it has high power consumption and is volatile, meaning that it requires power to maintain the stored information and loses the data when the power is interrupted.

In comparison, there’s DRAM’s predecessor, SRAM or Static Random-Access Memory. Slightly more expensive to make, SRAM has the advantage over DRAM in that it does not need to be refreshed because SRAM works by switching the current flow in one of two directions instead of holding a charge in place within a storage cell. SRAM is typically used for cache memory with the CPU and is faster than DRAM. SRAM is faster because it’s capable of byte-level reads and writes as opposed to DRAM’s multiple-byte page-level.

Other forms of RAM include Fast Page Mode DRAM (FPM DRAM), Extended Data Out DRAM (EDO DRAM), Synchronous DRAM (SDRAM), Single Data Rate SDRAM (SDR DRAM), and Double Data Rate SDRAM (DDR SDRAM), to name a few.

ASAP IT Technology, owned and operated by ASAP Semiconductor, is a premier supplier of IT, computer, board-level parts and components. DRAMs, SRAMs, and SDRAMs, from the new to the obsolete and hard-to-find, we can help you with all your IT requirements. Just visit us at www.asap-ittechnology.com to get started on a quote.


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Rambus Inc. has taken the move to start selling semiconductor chips under its own brand as part of its newly devoted and concentrated effort at reducing the company’s dependence on income from litigation to defend its patents. Rambus is currently working on shipping samples of the chips to potential customers in order to gauge the market.

Since when Rambus opened in 1990, the DRAM technology company has always focused on creation and licensing of technology as opposed to selling the finished chips. Because of this, Rambus is one of the leading frontrunners in holding a number of major DRAM patents. However, this also resulted in many infamous legal fights with DRAM manufacturers over DDR technology. As of late, Rambus has been quiet and slowly falling behind. The company has seen little success licensing further DRAM designs.

This prompted Rambus to explore other avenues to increase revenue. Rambus will be making the transition from an IP licensing business to a true fabless semiconductor firm, designing and selling their own products. Rambus for their part sees a place for themselves in the current DIMM market for supplying the register and buffer chips used for DDR4 RDIMM/LRDIMMs, as DDR4 imposes further limitations in order to reach its greater speeds.

Although Rambus is producing their own DIMM chipsets, they will not be producing their own DIMMs or DRAM. Rather, the company will be offering their chipsets for sale to the DIMM vendors – Hynix, Micron, Samsung, etc. – for those companies to use in building their respective RDIMMs and LPDIMMs.

“Rambus, which started its business 25 years ago as a developer of RDRAM (Rambus DRAM) technology, is returning to its roots in memory technology innovation,”

Junko Yoshida, Chief International Correspondent at UBM Electronics explained.

“Seizing the opportunity in a growing market of enterprise servers and datacenters that is screaming for dramatic performance improvements both in bandwidth and capacity, Rambus is rolling out a server memory interface chipset. It’s the first time for Rambus to enter a fabless chip business. With this new chipset, Rambus isn’t [just] pursuing IP licensing it’s known for.”

Here at ASAP IT Technology, we have the resources to distribute a vast array of Rambus products. We provide our customers with a simplified and speedy procurement process. We ensure that our customers production lines and IT systems are always up and running effectively. We offer cost-effective component solutions by improving our customers’ negotiation power. If you are interested in a quote, please contact our friendly sales staff at sales@asap-ittechnology.com or call us at +1-714-705-4780.


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Based in Taiwan’s Hsinchu Science and Industrial Park, Macronix is a premier designer and manufacturer of integrated devices for the Non-Volatile Memory (NVM) market—producing a full range of NOR Flash, NAND Flash, and ROM products. Established in 1989, Macronix is the first semiconductor manufacturer to be certified by the Social Accountability International Standard (SA 8000:2001) in Hsinchu Science Park, home to many competing foundries. The company caters to a wide variety of industries with its technologies—computer, telecommunications, consumer, and automotive.

Macronix operates three semiconductor foundries: Fab 1 (focuses on designing niche logic products and 6-inch wafer fabrication), Fab 2 (non-volatile memory products and 8-inch wafer fabrication), and Fab 5 (non-volatile memory products and 12-inch wafer fabrication). Fab 1 outputs 37,000 6-inch wafers per month based on 0.35um to 1.0um technologies. Fab 2 produces 55,000 8-inch wafers per month. Fab 5 yields 20,000 12-inch wafers per month.

Macronix International Co., Ltd. has a long-standing relationship with video game giant Nintendo. In 2001, Nintendo purchased USD$75 million worth of integrated circuit manufacturing equipment to then lease to Macronix. This semiconductor machinery is housed at Fab 2 in Taiwan. Nintendo benefits from this deal by having a completely dedicated facility for manufacturing components for its platforms including the GameCube and Game Boy Advance. In 2011, Macronix’s revenue rose 18% due to deliveries of its niche memory chips in support of the Nintendo 3DS console.

Today, Macronix employs a 4,800-strong workforce and takes in nearly USD$1 billion in revenues. Constantly innovating its core products, Macronix holds 4,500 patents and dedicates 10-12% of its annual revenue to research and development.

ASAP IT Technology is a one-stop shop for Macronix International Co., Ltd. parts. Prospective customers can browse our extensive catalog of both obsolete and in-production Macronix components and assemblies ranging from serial flash products to NOR flash solutions to NAND flash systems. If you are interested in a quote, please contact our friendly sales staff at sales@asap-ittechnology.com or call toll-free at 1-866-756-8540.


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