I have an AMD XP 2500+ CPU/MB that runs a 333 MHz FSB, can I use 400 MHz memory without upgrading CPU/FSB?

Question

In other words, will the 400 MHz (PC3200) memory step itself down to the 333 MHz FSB or will it just fail to work at all?

Answer 1

Yes, it will usually work. The RAM will decrease it's clock speed to work with your system. Many RAM manufacturers are good at this (Kingston) capability, and others are not. If you get cheap RAM you may end up with a system that will not boot, but you should be OK. My favorite brands are Kingston, Crucial and Samsung.

It will not cost more to get the 400MHz these days, and at times the 333MHz will actually cost more.

Answer 2

You can run PC3200 memory on your desktop and it will run at 333mhz. That is, unless your motherboard supports PC3200 memory and will run it at the 400 MHZ that it should. There is no need to update your CPU/FSB after installing this memory.

Answer 3

It will work but your 400MHZ memory will run at 333MHz like the rest of your memory. IT always runs at the slowest speed of the memory installed ex: you have 1 333 1 400 both will run at 333MHz. Hope this helps. but don't try 400MHz with memory slower the 333Mhz it has been know to crash or give the blue screen of death.

Answer 4

Check what your motherboard supports BEFORE you buy anything. What speed, how much memory, single or dual channel. You might be able to add memory instead of replace you old memory.

Answer 5

It will work, IF your motherboard can support the ram. It would also just be cheaper to use the slower ram instead.

Answer 6

check your manual or look one up on the net and see if that memory is compatable

Answer 7

yes, it will be downclocked via the motherboard. go for the upgrade!

Answer 8

it will probably not work at all
because the system is too high

Answer 9

It will work. I just did this yesterday.

Answer 10

no worries....plug them in and go