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What Is A multiplier ?

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Name: CoMpUteR
Date: November 17, 2003 at 08:07:49 Pacific
OS: Windows Xp 3.G
CPU/Ram: 512 DDR RAM
Comment:

What Is A multiplier Guys And Where Can I Find It To Ajust It.



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Response Number 1
Name: retrogamer
Date: November 17, 2003 at 09:03:19 Pacific
Reply:

Well, on the newer AMD chips, there is a multiplier on the top of the processor (the side without the pins). If you want a little thingy that can unlock that multiplier, (that is, if you have an AMD chip) you can buy this thing at http://www.cyberguys.com/ I know that on my 486 the multiplication of the internal clock is controlled by jumpers on the motherboard, for instance, my motherboard runs at an internal clock of 33 MHz, (an Intel DX4 at 100 MHz) and the clock multiplier on the motherboard is set to 3, therefore 99, or listed as 100 MHz, which is the external clock.


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Response Number 2
Name: CoMpUtEr
Date: November 17, 2003 at 09:10:46 Pacific
Reply:

Thanks Mate Does P4 Have multiplier

Thanks Again Mate



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Response Number 3
Name: Tbird4point6LX97
Date: November 17, 2003 at 10:20:17 Pacific
Reply:

i thought that thing on the opposite side of the pins was the core...

if you have a barton or t-bred core, you will not normally need to unlock the multiplier<---- these seem to work great with nForce2 mobo's

if you have a palomino core, you'll more than likely will have to unlock it


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Response Number 4
Name: real_cool
Date: November 17, 2003 at 11:08:42 Pacific
Reply:

All Intel P4s (Celeron and Pentium) have multiplier locked. There is no adjustment, and it cannot be unlocked.


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Response Number 5
Name: johnoh
Date: November 17, 2003 at 12:56:37 Pacific
Reply:

You adjust your amd xp mutliplier within the bios. It may be called CPU Ratio.

If it is not in the bios you can adjust it using wire tricks, which is where you manually connect cpu pins or cpu socket holes using tiny wires.

This assumes you have not bought your cpu in the last month. Starting a month ago amd has begun shipping about half of their new cpus with locked multipliers. They have made no statement regarding this change, and is it confusing that they are still shipping some cups with unlocked multipliers. There is no rhyme or reason to knowing if you are getting a locked or unlocked chip, other than if its a 2003 mfg week of 28 or les, it is certain to be unlocked. Here is a thread where people are playing around trying to figure out how to unlock these chips. So far nobody has had any luck.

The motherboard system bus gets set at a certain speed by bios or motherboard jumpers or by auto-detecting the default cpu fsb. The multiplier is a circuit that divides that system bus clock period by a number (like 10 or 12 or 15, etc) to create the default clock period of the cpu. The easy way to describe this is not in clock periods but in clock cycles per second, which is what we call it a multiplier and not a divider. A cpu with a 1 nanosecond clock period is known as a 1ghz cpu.

If you have an amd xp 3200+ your motherboard system bus is 200mhz and your multiplier is 11 which results in a cpu clock of 2200mhz.



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Response Number 6
Name: johnoh
Date: November 17, 2003 at 12:59:36 Pacific
Reply:

oops I pressed enter by mistake before going back to check typos, so the above post sucks in terms of readability. Sorry.

Here is the link I referenced

http://forum.oc-forums.com/vb/showthread.php?s=&threadid=245742



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Response Number 7
Name: jam
Date: November 17, 2003 at 13:02:15 Pacific
Reply:

The multiplier is what is used to configure your motherboard/chipset to recognize the proper speed of your particular CPU. Multiplier x FSB = CPU speed. It does just as it's name implies, it multiplies. If your FSB is set to 100mhz & you have a CPU that's designed to run at 1.2ghz (1200mhz), you'd set your multiplier to 12...12 x 100 = 1200. If you wanna upgrade your CPU to a 1.4ghz (1400mhz) model, you'd change the setting to 14. It all depends on what CPU you have...generally, they have a base clock (FSB) of 100, 133, 166, or 200mhz. The older socket 7 CPU was based on 66mhz FSB.

Not to confuse you, but using that 1400mhz CPU as an example...if you were to change the FSB to 133mhz & the multiplier to 10.5, you should still be able to run that 1.4ghz CPU at it's proper speed, but with a higher FSB...10.5 x 133 = 1400.

The multipler can be a setting on the motherboard itself...either jumpers or a DIP switch...or it may be a setting in the BIOS. All boards are different, though most of the newer board's settings are in the BIOS. Check your manual.

Pentium CPUs are "multiplier locked" & there is no way to unlock them, so changing the multiplier settings on the board (or BIOS) will have no affect. Some AMD CPUs are locked, others are not, it depends on the model...there are tricks available to unlock them though.


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