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Installing new Athlon...
- Thread starter ilikefish
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fsb speed is not something that is auto-detected by your motherboard. Depending on which motherboard you have and what chipset it uses, it may only support 200mhz fsb, it may support up to 266fsb, it may support up to 333fsb, and it may support all fsb's up to 400fsb.
If there's no bios setting, check the mobo's documentation for any jumpers on the board.
If there's no bios setting, check the mobo's documentation for any jumpers on the board.
most motherboards talk about fsb settings in terms of half. i can't think of the reason at the momement but i know there is one. i think its something about double data rate stuff like in ddr ram. anyway a setting of 133 in the bios is effectivly 266 etc. if you try to set the bios up to say 266 you are realy getting over 500 wich is not supported so be careful with those settings. also depending on the board there may be a jumber that lets you switch between 100 and 133. oh one more thing. some boards just let you pick the cpu speed. for example and xp 1800 on say an asus board gives you two options 11xxMhz and 15xxMhz if you pick the 15xx one it will set the fsb to 133 and so on. you have to understand a little about what it all means. sorry its all so confusing.
Nearly all motherboards now are soft configurable, that is to say that practically all settings are carried out in the bios but often with one exception.
Even now many new motherboards have a simple switch or three jumpers on the motherboard that if you look closley or check in the manual give you the:
100
133
166
and even 200 front side bus options
Roughly they are set as follows:
All Duron and Athlon Thunderbird core CPU's (the first socket A's) are 200fsb so you need to set to 100
Later Athlon Thunderbird core/ Athlon XP with Palomino and nearly all Thoroughbred core apart from most XP2.6+'s are 266fsb so you need to set to 133
Most Thoroughbred core XP2.6+'s, the Barton XP2.5+, XP2.7+, XP2.8+, XP3.0+ which have a 333fsb so need setting to 166.
Lastly the latest XP3.2+ 400fsb set at 200
I've probably missed something but thats roughly.
Note* All motherboards are not capable of going to 400fsb depending of make/model.
Martin
Replying helps further our knowledge, without comment leaves us wondering.
Even now many new motherboards have a simple switch or three jumpers on the motherboard that if you look closley or check in the manual give you the:
100
133
166
and even 200 front side bus options
Roughly they are set as follows:
All Duron and Athlon Thunderbird core CPU's (the first socket A's) are 200fsb so you need to set to 100
Later Athlon Thunderbird core/ Athlon XP with Palomino and nearly all Thoroughbred core apart from most XP2.6+'s are 266fsb so you need to set to 133
Most Thoroughbred core XP2.6+'s, the Barton XP2.5+, XP2.7+, XP2.8+, XP3.0+ which have a 333fsb so need setting to 166.
Lastly the latest XP3.2+ 400fsb set at 200
I've probably missed something but thats roughly.
Note* All motherboards are not capable of going to 400fsb depending of make/model.
Martin
Replying helps further our knowledge, without comment leaves us wondering.
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