cpu fsb speed 667, ram speed 533?

Intel / Intel(r) 945 chipset
March 30, 2009 at 12:50:20
Specs: Windows XP
My cpu's fsb speed is 667 and ram's speed 533, can i replace ram with 667 speed?
I have 2 modules of ram of 512 mb each. 1 module is of 533 and other of 667
and i want to change one of them to 1gb with 667 fsb speed.

See More: cpu fsb speed 667, ram speed 533?

Report •

March 30, 2009 at 14:24:48
You have to look at the frequencies, not the bogus ratings. 667MHz FSB runs at 166MHz frequency, DDR2-533 RAM runs at 266MHz frequency. Your RAM is already running 60% faster than the CPU. What do you expect to gain by replacing it with DDR2-667?

Report •

March 31, 2009 at 13:35:28
will it damage my laptop?

Report •

March 31, 2009 at 13:51:35
only 667Mhz ram modules are available in the market.
Will my laptop get affected?

Report •

Related Solutions

March 31, 2009 at 14:24:42
DDR2-667 will NOT make your system run faster. And if you install it along with DDR2-533, it will run at DDR2-533 speed anyway.

Here's 2GB (2 x 1GB) for $21.50:


Report •

March 31, 2009 at 16:29:33
Sigh... once again this old arguement....

Okay, The P4/Core cpu's use a quad pumped bus. That is why it equals 667 (166.6 x 4), NOT like the AMD DDR bus (2x) of the Athlon xp's

Yes, going to DDR 2 667 would give a slight increase in memory bandwidth.

This is especially true if you are not running in dual channel mode. But even if you were, dual channel mode MIGHT provide a 5-10% improvement in real world tests, not a 50% improvement.

CPU FSB 667Mhz = RAM speed 667Mhz, end of story.

PowerMac 9600(1 ghz G4)
512mb RAM
50gb SCSI
ATi 9200 PCI

Report •

Ask Question