Slots 2 2 Banks Of 1 Meaning
-written by Jeff Goldenbaum, Dataram Memory Blog Team Member
This term refers to a group of gambling machines, usually games that share a common feature.Slots may be in banks with other games of a similar style, made by the same designer, or with similar wager varieties. A gambler’s budget; money set aside for a specific duration of casino gambling. Craps players face a 1.41 percent edge on the pass line, and can get that down to less than 1 percent with free odds. Roulette players face a house edge of 5.26 percent on double-zero wheels, and 2.7 percent on wheels that have just one zero. On the slots, we speak of payback percentages. In computing, serial presence detect (SPD) is a standardized way to automatically access information about a memory module.Earlier 72-pin SIMMs included five pins that provided five bits of parallel presence detect (PPD) data, but the 168-pin DIMM standard changed to a serial presence detect to encode much more information. Any dimensions above the 6 x 2.4 x 2.4 m will be considered as OOG and containers with such cargo will NOT fit within these dimensions. For example, if a cargo is loaded on a Flat Rack container (as shown below) and its dimensions are 6 x 3.4 x 3.4 m, the cargo will be over-wide and over-high by 1 meter respectively. Or in other words, which slots are you supposed to put RAM in in order to maintain dual channel memory? 1,3 and 2,4 or. Please don't tell me what you 'think' or what 'Asus usually does' I only want to know the facts for the G74, G73, and G53 notebooks so I can add this info to my New Drivers sticky (I'm going to have to rename that thing lol ) so there's a reference on.
Comparing Quad-Rank and Dual-Rank Memory Modules
The term “rank” simply refers to a 64-bit chunk of data. In its simplest form, a DIMM with DRAM chips on just one side would contain a single 64-bit chunk of data and would be called a single- rank (1R) module. DIMMs with chips on both sides often contain at least two 64-bit chunks of data and are referred to as dual-rank (2R) modules. Some DIMMs can have DRAM chips on both sides but are configured so that they contain two 64-bit data chunks on each side—four in total—and are referred to as quad-rank (4R) modules. Quad-rank DIMMs run at a maximum PC3-8500 (DDR3-1066) speed in current architecture.
Why Have Quad-Rank DIMMs?
With each new generation of DRAM chip, quad-rank DIMMs are the least expensive way to achieve the highest density DIMM. Today, a 16GB dual-rank DDR3 DIMM is built with thirty-six 4Gb (gigabit) chips. A quad-rank 32GB DIMM will utilize thirty-six “dual-die” (essentially two DRAMs within each physical chip) 4Gb chips. Until the next generation 8Gb chips become more mainstream and production costs come down, we won’t see a cost-effective dual-rank 32GB DIMM. But when that does occur, you’ll not only see dual-rank 32GB DIMMs, but you’ll also see quad-rank 64GB DIMMs!
Quad-rank DIMMs actually perform best in Xeon 7500 CPU based systems as the memory BOB (buffer-on board) architecture delivers better performance compared to single- or dual-rank DIMMs of equal capacity. The maximum speed is still PC3-8500 and is consistent regardless of whether the system has the minimum configuration or is fully loaded.
When to Consider Ranks
Today’s 2-way servers with Intel Xeon 5600 series processors that utilize DDR3 memory technologies have limitations when it comes to how many ranks of memory may be installed. DIMM slots are configured as “channels” with either 3 channels of 2 DIMM slots each (server models with 12 DIMM slots), or 3 channels of 3 DIMM slots each (server models with 16 or 18 DIMM slots). Each channel supports no more than 8 ranks of memory. Simply put, no more than 12 quad-rank DIMMs can be installed in these servers. To utilize all available slots in servers with 16 or 18 DIMM slots, the use of dual-rank DIMMs is required.
A memory bank is a logical unit of storage in electronics, which is hardware-dependent. In a computer, the memory bank may be determined by the memory controller along with physical organization of the hardware memory slots. In a typical synchronous dynamic random-access memory (SDRAM) or double data rate synchronous dynamic random-access memory (DDR SDRAM), a bank consists of multiple rows and columns of storage units, and is usually spread out across several chips. In a single read or write operation, only one bank is accessed, therefore the number of bits in a column or a row, per bank and per chip, equals the memory bus width in bits (single channel). The size of a bank is further determined by the number of bits in a column and a row, per chip, multiplied by the number of chips in a bank.
Some computers have several identical memory banks of RAM, and use bank switching to switch between them. Harvard architecture computers have (at least) two very different banks of memory, one for program storage and other for data storage.
In caching[edit]
A memory bank is a part of cache memory that is addressed consecutively in the total set of memory banks, i.e., when data item a(n) is stored in bank b, data item a(n + 1) is stored in bank b + 1. Cache memory is divided in banks to evade the effects of the bank cycle time (see above) [=> missing 'bank cycle' definition, above]. When data is stored or retrieved consecutively each bank has enough time to recover before the next request for that bank arrives.[1]
The number of memory modules needed to have the same number of data bits as the bus. A bank can consist of one or more memory modules.
See also[edit]
Further reading[edit]
- '2.3.3 Data Random Access Memory'. MCS-4 Assembly Language Programming Manual - The INTELLEC 4 Microcomputer System Programming Manual(PDF) (Preliminary ed.). Santa Clara, California, USA: Intel Corporation. December 1973. pp. 2-5–2-6. MCS-030-1273-1. Archived from the original(PDF) on 2020-03-01. Retrieved 2020-03-02.
References[edit]
- ^'Glossary'. Overview of Recent Supercomputers. Retrieved 26 August 2011.