Newbie memory question

lche059

Junior Member
May 1, 2007
2
0
0
I just added a stick of 512mb ddr2 pc2-5300(667mhz) to my thinkpad r60. the stock memory is also 512mb but the speed is unknown to me.

the cpu-z reports the following:


Core Speed 997.5 MHz (6.0 x 166.3 MHz)
Rated Bus speed 665.0 MHz
Stock frequency 1666 MHz

Memory Size 1016 MBytes
Memory Frequency 332.5 MHz
FSB : DRAM 1:2

this really confuses me.
doesn't fsb : dram ratio 1:2 mean that dram runs at 665x2, which is contradictive to the memory frequence reading 332.5. Can someone tell me if my interpretation is correct? am i correct to think I should expect to see memory frequency 667mhz and fsb : dram ratio 1:1, assuming the stock stick runs at the same speed as the new one. Thanks in advance for any help.
 

PCTC2

Diamond Member
Feb 18, 2007
3,892
33
91
Welcome to AT Forums!

Well, anyways, the FSB is quad-pumped, which means there are four instructions per clock so in actuality, your FSB is 166 (166*4=667) and 166*2=332.