FSB related Question

[2017davidwade]

If an Intel socket took 667mhz fsb could a CPU at 800mhz fsb be used in that socket, Would it down clock the 800MHZ FSB like ram would if 1333 was used on 1066 Dimm port.

 

[rgd1101]

you will need to look up the cpu supported list for the motherboard

 

[mgallo848]

If an Intel socket took 667mhz fsb could a CPU at 800mhz fsb be used in that socket, Would it down clock the 800MHZ FSB like ram would if 1333 was used on 1066 Dimm port.

What make and model motherboard are you talking about?

 

[2017davidwade]

I know what cpus it'll take off by heart. My question was would the board down clock an 800MHZ FSB to 667MHZ just as a chipset would with 800MHZ memory down to 667MHZ. Simple

 

[Eximo]

And the answer is whatever the manufacturer supports. No real rule of thumb here. Some motherboards and sockets are cross platform capable, but not that many, and there were always limitations.

To get an answer you need the chipset of the motherboard as a minimum, preferably the exact model. At that point you just need to look up the motherboard to see the list of supported CPUs.

Many AM2+/AM3 boards had cross platform support. Then the bandwidth available to the CPU was limited by putting a newer CPU in an older socket. Intel less so, but there were many LGA775 socket CPUs, and sometimes you could upgrade. Other times the chipset would have a hard limit on FSB, # of cores, or memory type.

 

[rgd1101]

if you know it'll take it, put it in and see










yes it will down clock

 

[mgallo848]

It's impossible to give you an answer without knowing what make and model of the motherboard is

 

[mgallo848]

if you know it'll take it, put it in and see










yes it will down clock

That's not entirely correct. Some of the boards from that era do not support downclocking. He needs to tell us what make and model of the motherboard is first

 

[2017davidwade]

Intel 945PM.

 

[mgallo848]

No it looks like it wont work.

https://ark.intel.com/products/27858/Intel-82945PM-Memory-Controller

There is no board that I can find called intel 945 pm

If it is this board it may work https://www.intel.com/content/www/us/en/support/articles/000005788/boards-and-kits/desktop-boards.html

 

[2017davidwade]

Socket type mPGA479M
Form ATX
DDR2 800mhz
Chipset QG82945PM SL8Z4
ATI Radeon X1300
FSB speed 667

 

[rgd1101]

if you know it'll take it, put it in and see










yes it will down clock

That's not entirely correct. Some of the boards from that era do not support downclocking. He needs to tell us what make and model of the motherboard is first

OP said it will take the cpu. since he can't/won't tell us the exact model. have to go by his word

 

[2017davidwade]

I'm not the 3rd person here and I don't know it. Don't use online forums to be clever when facing someone is so much better. Isn't it.