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Topic: Front side bus

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  Front side bus - Wikipedia, the free encyclopedia
This bus and the cache memory connected to it is faster than accessing the system RAM via the front side bus.
With bus speeds increasing rapidly, it is often necessary to run the RAM at a lower frequency than the system bus in order to stay within the limitations of the DRAM modules on the memory stick.
The front side bus as it is traditionally known may be disappearing.
en.wikipedia.org /wiki/Front_side_bus   (981 words)

 What is FSB? Front Side Bus Info
The front side bus on a computer connects the processor to the north side bridge, which comprises the memory bus, PCI bus and AGP bus.
For example, a processor running at 550MHz might be using a 100 MHz FSB; this means there is a clock multiplier setting of 5.5, thus the CPU is set to run at 5.5 times the MHz speed of the front side bus: basically equating to 100 MHz x 5.5 = 550 MHz.
Typically a FSB today is dual or quad channel, meaning a FSB speed advertised as being "333 MHz" may actually be 166 MHz dual channel, effectively meaning 333 MHz of speed.
www.gen-x-pc.com /fsb_info.htm   (373 words)

 FSB - Front Side Bus
Front Side Bus is the data channel connecting the processor, chipset, DRAM, and AGP socket.
FSB is described in terms of its width in bits and it's speed in MHz.
Typically the FSB is 100Mhz or 133Mhz, but overclockers often manipulate this value to increase the speed at which their processor runs.
www.auditmypc.com /acronym/FSB.asp   (302 words)

 Front Side Bus   (Site not responding. Last check: 2007-10-22)
The Memory Bus on the Athlon and G4 is 64 bits of data running at either 100 or 133Mhz, the PCI bus on desktop computers is normally 32bit at 33Mhz.
The Front Side Bus speed for the G4+ is 133Mhz, and the speeds of the processor available are all multiples of this.
Obviously the faster the front side bus is the better, since it improves the overall bandwidth from the processor to the memory, but having a much faster Front Side Bus is only helpful if it is being used by faster memory and peripheral buses.
www.arspentia.org /423s/fsb   (634 words)

 Front side bus
For example, a processor running at 550MHz might be using a 100Mhz FSB; this means there is a clock multiplier setting of 5.5, thus the cpu is set to run at 5.5 times the Mhz speed of the front side bus: basically equating to 100Mhz x 5.5 = 550Mhz.
The speed at which the PCI bus is set at is a division of the front side bus's speed: eg, a 166mhz front side bus will mean the PCI bus is set to run at 1/5th of the speed of the FSB.
Usually a motherboard will have FSB speed increments at which these PCI dividers are designed with: typically 66mhz, 100mhz, 133mhz, 166mhz and 200mhz; meaning dividers of one half, one third, one forth and so on, to go with the standard bus speeds.
www.fastload.org /fr/Front_side_bus.html   (666 words)

 Front Side Bus - Wikipedia
Front Side Bus (FSB) ist ein Begriff aus der Computertechnik.
Die Leistung des Front Side Bus wird in der Regel mit der Taktfrequenz des Busses angegeben, oder bei DDR- bzw.
Allerdings entstanden dadurch auch immer wieder falsche Angaben zur Taktfrequenz des FSB: der FSB dieser Prozessoren läuft auf einer Taktfrequenz von 100 bis 266 MHz (FSB 400 bis FSB 1066), jedoch wird er immer wieder gerne, wenn auch falsch, als 400- bis 1066-"MHz"-FSB bezeichnet (auch Marketing-MHz genannt).
de.wikipedia.org /wiki/Front_Side_Bus   (375 words)

 Front side bus   (Site not responding. Last check: 2007-10-22)
On older computers where the L2 cache was not integrated into the CPU back side bus connects to the L2 cache and this was faster than accessing the RAM the front side bus.
The front side bus as it is known may be disappearing.
The will run 5/4 faster then the memory this situation meaning a 200 MHz bus run with the memory at only 160 With bus speeds increasing rapidly it is necessary to run the RAM at a frequency than the system bus in order stay within the limitations of the DRAM on the memory stick.
www.freeglossary.com /Front-side_bus   (981 words)

 Front Side Bus Speed   (Site not responding. Last check: 2007-10-22)
The CPU bus speed also known as "front-side bus speed" (or FSB) and is the speed at which the CPU communicates with RAM memory and the motherboard chipset.
Athlon XPs have a 266MHz, 333MHz, or 400MHz FSB, Pentium 4s have a 400MHz, 533MHz, or 800MHz FSB, and socket 478 Celerons have a 400MHz FSB.
The highest front side bus speed available to the public to-date is 800MHz—its high bandwidth between the processor and the rest of the system improves throughput and performance.
www.tigerdirect.com /media/learnmore/FSB.htm   (140 words)

 Front Side Bus - FSB
Short for Front Side Bus, FSB is also known as the Processor Bus, Memory Bus, or System Bus and connects the CPU with the main memory and is used to connect to other components within the computer.
The FSB is now another important consideration when looking at purchasing a computer Motherboard or a new computer.
While most motherboards will allow you to set the FSB to any setting, ensure that the FSB is properly set unless you plan to Overclock the computer.
www.computerhope.com /jargon/f/fsb.htm   (203 words)

 Memory upgrades from Crucial.com - The S Files page 4   (Site not responding. Last check: 2007-10-22)
The reason is that the speed of SDRAM is dependent upon the speed of the front side bus (FSB) in the motherboard.
The front side bus (FSB), sometimes just called the bus, is the main circuitry highway in the PC that enables all data to get from one place to another.
Note that the speed of the FSB is not the same as processor speed.
www.crucial.com /library/sfiles4.asp   (385 words)

 iqexpand.com   (Site not responding. Last check: 2007-10-22)
The former referred to bus systems that were designed to be used with internal devices, such as graphics cards, and the latter to buses designed to add external devices such as scanners.
An internal bus connects all the internal components of a computer to the motherboard (and thus, the CPU and internal memory).
These types of buses are also referred to as a local bus, because they are intended to connect to local devices, not to those in other machines or external to the computer.
computer_bus.iqexpand.com   (2140 words)

 A Basic Guide To Overclocking and System Building
For the software side, the Operating System (OS) is to be installed first, followed by drivers for the motherboard, graphics and sound card (if the motherboard has on-board sound or other components, drivers will be on the motherboard's CD).
To change the Front Side Bus, one enters the computer's BIOS before boot-up, goes to the Frequency/Voltage Control section (which may be named slightly different on various motherboards).
With a change in the Front Side Bus, it is extremely important to unlock the Voltage setting and change it, depending on how fast the computer is being set.
www.overclockers.com /articles740/index02.asp   (754 words)

 Understanding System Memory and CPU Speeds - A layman's guide to the Front Side Bus (FSB)-Best Computer Online Store ...
The speed of the front side bus depends on the processor and motherboard chipset you are using as well as the system clock.
From the system clock your PCI bus speed is determined via the use of a divider and then your AGP bus speed is determined by multiplying the PCI bus speed by 2.
Now that you understand the performance enhancements in the FSB of a processor it is important that you understand how to figure out the processor multiplier and the proper system clock.
www.directron.com /fsbguide.html   (3907 words)

 front side bus from FOLDOC   (Site not responding. Last check: 2007-10-22)
(FSB) The bus via which a processor communicates with its RAM and chipset; one half of the Dual Independent Bus, the other half being the backside bus.
The L2 cache is usually on the FSB, unless it is on the same chip as the processor [example?].
Altering the FSB speed and the multiplier ratio are the two main ways of overclocking processors.
foldoc.org /?FSB   (160 words)

 Front side bus and bios update - ResellerRatings   (Site not responding. Last check: 2007-10-22)
Now after reading I have seen that the actual front side bus is on the cpu.
The FSB is controlled in the BIOS, but the multiplier is read from the CPU by the BIOS and then multiplied.
The CPU itself dictates what FSB can be used, as it is set to run at a certain frequency and you can't run it at full speed if you use a lower FSB due to the multiplier lock.
www.resellerratings.com /forum/t51073.html   (461 words)

 What is Front Side Bus? - Xbox 360 & Xbox Forums
The front side bus is the speed of the bus between the CPU and northbridge and southbridge (chipset) of the motherboard.
A higher front side bus is desireable for higher clock speeds and general higher performance.
That bus is actually a 200MHz clock signal that transfers data on the rising edge, high, falling edge, and low pulses of the clock signal; P4 is sometimes called a "quad-pumped" bus.
forum.teamxbox.com /showthread.php?t=207194   (296 words)

 GamePC - Shattering The 1 GHz FSB Barrier : Intel’s 3.46 GHz P4 EE
The speed of a system’s front side bus (the speed of which data is transferred between the processor and the system's "Northbridge" controller of the chipset) is a vital component of any modern system.
The last time Intel raised their front side bus speeds was in mid-2003 with their first "Northwood" Pentium 4 processors, which jumped from 533 MHz FSB to 800 MHz FSB.
In order to sidestep this issue, Intel has decided to introduce 1066 MHz FSB technology first on their Pentium 4 "Extreme Edition" processor, which is based on their "Gallatin" processor core, which does not appear to exhibit Prescott's front side bus issues.
www.gamepc.com /labs/view_content.asp?id=p4346ee&page=1&MSCSProfile=95385A1F52DEA1A229D5B3754205446435FE3DD96907A1D19C178F8F9C247AE00CDDBF34B1AAFDECF26ABEB94743AD06252EF44DA5C33C8F9A624D697DA1FE310137F4DCCFF3E115BE2965FF0B6F04D6E9F0E9C54D2E3436698F5EC0BEF4739D0C253725CA67F9A512812BE1AE408720DBE962409C1E3A7504EEA9FDBB43A92EF5E5362549AACF1E   (667 words)

 Front Side Bus - TechSpot OpenBoards
FSB detection isn't always easy as different manufacturers use different chipsets as well as different logic to determine how it operates.
CHKCPU, a nifty little cpuid program for DOS, reported a board that was running at 50mhz FSB (socket 5 with an AMD k5 in it) as 375.5mhz, with a 1.5x multiplier.
For example the p4s either run on fsbs of 100 or 133, the 400s run on 100s and the 533s run on the 133s.
www.techspot.com /vb/topic3406.html   (327 words)

 How to Choose Motherboard Chipsets? How to Select Mainboard Chipset - Mother Board Chipset-Best Computer Online Store ...
Modern CPUs and RAM come in a variety of ratings for front-side bus speeds and must be matched with an appropriate chipset (which determines the motherboard's front-side bus speed).
When the front-side bus speed is the same as the speed of the DDR RAM, this combination is described as being "synchronous." It is the motherboard chipset (within the north bridge) that specifies the front-side bus speed.
The system bus is the interface between the north bridge's memory controller and the processor.
www.directron.com /chipsetguide.html   (4874 words)

 PCWorld.com - Intel Rides a Faster Bus   (Site not responding. Last check: 2007-10-22)
Intel is planning to introduce a faster front-side bus on an upcoming version of its Pentium 4 Extreme Edition processor that will help the firm increase the performance of its chips by improving a crucial bottleneck in system performance.
Most chip designers feel that the once the clock speed of the processor exceeds four or five times the speed of the front-side bus, the processor is charging ahead of the bus and wasting time waiting for the bus to feed it data, says Dean McCarron, principal analyst with Mercury Research in Cave Creek, Arizona.
A faster bus will allow the company to increase the clock speed of its chips and take full advantage of those extra clock cycles, he says.
www.pcworld.com /news/article/0,aid,118004,00.asp   (708 words)

 Intel to crank up Pentium 4EE bus   (Site not responding. Last check: 2007-10-22)
Pentium 4 chipsets use an 800MHz front-side bus to connect the processor to the memory.
Dean McCarron, principal analyst with Mercury Research, said that once a processor's clock speed was four or five times faster than the speed of the front-side bus, the processor was wasting time waiting for the bus to feed it data.
Intel has said nothing about its plans for the front-side bus architecture, but it looks as if the company will keep that design in place for the rest of this year at least.
www.computerweekly.co.uk /Article133848.htm   (572 words)

 What is the Front Side Bus?
The Front Side Bus (FSB) is the connecting path between the CPU and other key components such as system memory.
AMD uses the EV6 Front Side Bus in its Athlon and Athlon XP CPU's.
Intel uses the AGTL+ Front Side Bus in its Pentium 4 processors.
www.tech-faq.com /front-side-bus.shtml   (248 words)

 Difference between front side bus speed and actual speed?
Bus speed is the speed at which the CPU can communicate with the chip set and the rest of the computer.
FSB should be fine, the other main factors are ammount of RAM, harddrive speed, PCI factor, cards you are using.
I have 2000 bus and 2000Mhz processor because of the hypertransport technology makes my 800 bus twice the speed and I can over clock it by 200; the over clocking is also doubled from the hypertransport technology.
forum.ecoustics.com /bbs/messages/8829/123529.html   (3809 words)

 Hardware: What is 'Front Side Bus' ?
I have seen the term 'Front Side Bus' used, but can not find what, exactly, it is refering to.
The FSB is used primarily for the CPU to MEMORY.
PCI Bus runs at 33MHz and is quiclky becoming obsolete due to it's (by today's standards) low bandwidth.
www.experts-exchange.com /Hardware/Q_10121082.html   (509 words)

 Siteowners - webmaster forums - front side bus?
FSB or Front Side Bus is the speed at which PCI and AGP Cards run at.
The Processor of anycomputer whether it be AMD or Intel has a Multiplier in which it actually multiplies by the FSB to get its processor speed.
and If you were an "overclocker" then you would start by changing the FSB speed to increase the CPU speed or if you want to get more technical you can unlock the Multiplier in the cpu by carful means.
www.siteownersforums.com /showthread.php?t=4128   (264 words)

 100 mhz front side bus explained!   (Site not responding. Last check: 2007-10-22)
The speed of the bus (the pathways taken by data moving around in the computer).
So if the CPU is running at say 200mhz, and the data bus can only run at 66mhz to the Ram, then you can see that there would be a huge bottleneck that would leave the CPU waiting for data from the RAM.
Well we now have mother boards coming out with what is called the 100mhz front side bus (the back side bus goes to the L2 RAM cache and has always been faster than the front side bus which goes to main RAM and the rest of the system).
www.2xtreme.net /~dlgeer/100mhz.html   (482 words)

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