Hi guys,

I know that a lot of you are knowledgeable about this stuff, so that’s why I would like to read your opinions.
I bought laptop Toshiba Satellite A300-149 with Vista on it.
This are the specs of my laptop:

type : Intel® Centrino® processor technology featuring Intel® Core™2 Duo processor T5550, Intel® PRO/Wireless 3945ABG network connection and Intel® GM965 Express chipset
clock speed : 1.83 GHz
Front Side Bus : 667 MHz
2nd level cache : 2 MB
System memory
standard : 2,048 (1,024 + 1,024) MB
maximum expandability : 4,096 MB
technology : DDR2 RAM (667 MHz)

Couple of days ago I downgraded to XP Professional 32 bit and also bought more memory. In shop they installed 2x2 GB DDR2 800 MHz.
First question that I would like to ask you - can I run 800 MHz memory on 667 MHz laptop? If not, is it so serious that I should return those RAMs to the shop?

Second question is - I see that XP recognizes only 3 GB of RAM. Is XP using all 4GB of RAM? Or do I have to go to XP 64bit?

I hope by doing these changes making music will be more joyful since I have Motif Classic and want to use software of it.

Thanks

You have confused your Laptop’s frontside bus speed with the Mhz rating for RAM. They have nothing to do with each other.

Your processor’s speed is 1.87 Ghz.
Your frontside bus speed is 667 Mhz.

You should use the RAM that is specified for your computer - any other
RAM that isn’t exactly what is specified for your computer won’t work
(or shouldn’t, anyway).

You have confused your Laptop’s frontside bus speed with the Mhz rating for RAM. They have nothing to do with each other.

Your processor’s speed is 1.87 Ghz.
Your frontside bus speed is 667 Mhz.

You should use the RAM that is specified for your computer - any other
RAM that isn’t exactly what is specified for your computer won’t work
(or shouldn’t, anyway).

You do not have a 667Mhz computer. You have a computer with a 1.87Ghz processor. A 667Mhz computer would be ancient - they don’t make those anymore.

Yes I’m aware that it’s not 667 MHz computer. But it says that RAM memory is DDR2 and 667 MHz. As I see, the front side bus has the same MHz as RAM. Anyway, I will go to the shop and try to replace those bought memory of 800 MHz with 667 MHz.

thanks

hdreamer - 11 February 2010 07:26 AM

Yes I’m aware that it’s not 667 MHz computer. But it says that RAM memory is DDR2 and 667 MHz. As I see, the front side bus has the same MHz as RAM. Anyway, I will go to the shop and try to replace those bought memory of 800 MHz with 667 MHz.

thanks

In this case, the frontside bus speed and the RAM megahertz are the same by coincidence only. For example, the latest Apple MacBook Pro has a frontside bus speed of 800Mhz, but the RAM chip specification is for 667 Mhz DDR2 SDRAM.