Discrepancy between cpu FSB and Ram frequency? Help!!!

I’ve just received my new laptop, but I’m worry about this. When I ordered via online I chose 2 GB of Ram DDR2 (667 MHz) an the stock cpu option, which was T2250 (1.73 GHz, 533 MHz FSB). I’ve seen systems with lower Ram frequency and higher FSB, but not my case, which is the contrary (I though all the Core Duo had the same FSB). Will this discrepancy cause me any problem, especially at the time of gamming or running a continuous process?.

I’ve already ran 3DMark05 (6293 pts), BF2 and Half life 2 and they played pretty well at high settings (a little choppy sometimes, buy generally well), so I may be misunderstanding concepts and my Ram will run at 533 MHz without any problems or conflict of any kind, but I want to be completely sure since I have only 10 days to returned if I’m not entirely satisfied (in my case, to have the correct Ram installed (533 MHz))

Please, help me.

Thanks.

 

There is essentially no difference in performance between 667MHz and 533MHz RAM, I would not worry about that.
The RAM speed can only run as high as the FSB of the processor - the T2250 has a 533MHz bus, so your RAM will run at that speed as well. The 667MHz RAM you got automatically downclocked to 533MHz.

 

Memory wont run higher than your FSB, so it will downclock and run at 533MHz and it is definately fine and there should not be any issues with it.

 

The only bad thing about that is wasted money.

 

Hmm, will it actually downclock?

On the CPU's I know of, it still runs at its own speed, but a lot of the extra speed is wasted waiting to sync with the FSB. Dunno if the Core is different there though. They might enforce a 1:1 memory/fsb ratio for all I know.

 

Isnt the T2250's FSB 533mhz anyways?

 

If you could download CPU-Z:
http://www.cpuid.com/cpuz.php
...and let us know what your FSB is and your memory clock is, we could figure this out. The memory clock will be something like 266MHz - it doesn't show the double-data rate (DDR) speed, which, in this case, would be 533MHz.

Yes, it is. Same goes for the T2050 (1.60GHz)

 

Oh, just to make sure it's clear, regardless of whether the RAM downclocks or not, which is just technical nitpicking, the system will work fine, and there is no technical problem in running RAM and FSB at different speeds. In the worst case, you'd get the same performance as if both had been 533mhz.

 

Here are my CPU-Z results:



I don’t understand much about timings and frequencies, but what I really want to know is, as Jalf says, whether my performance will be the same as if I had a 533 MHz Ram (1:1) or not,... although changing my memory may cost me around 100 usd in shipping expenses. Please guys, I really need your help about this matter…

Thanks.

 

The link is broken - perhaps upload to Imageshack and see if that works.

 

Sorry. Please tell me if this doesn't work neither:

http://img426.imageshack.us/my.php?image=cpuzuc1.jpg

Thanks.

 

That worked. CPU-Z says your FSB speed is 533MHz, and your memory is 266MHz (x2 for DDR speeds, so 533MHz). Now, on the screen all the way to the right, it says you have PC5300 memory, which is 333MHz (667MHz DDR). However, looks like it downclocked correctly to 533 to match the FSB.

 

Thank you very much Chaz, and thank you all for your help. I stay with the lappy then.