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PC-5300 vs PC-6400 memory
Posted: Tue Nov 13, 2007 3:41 am
by rokahn
Lenovo recommends slower PC-5300 memory. Is the x61s capable of running at the higher rate of PC-6400 memory?
Lenovo spec:
Supports two 200pin PC2-5300 Non-Parity (NP) Double Data Rate Two (DDR2) Technology
Crucial.com notes y
our system will operate at the speed of the slowest module or system component (the "lowest common denominator" effect).
Re: PC-5300 vs PC-6400 memory
Posted: Tue Nov 13, 2007 10:18 am
by ryengineer
X61s cannot utilize the higher speed of PC2-6400 (800 MHz), it will run at 5300 (667 Mhz) memory speed.
Re: PC-5300 vs PC-6400 memory
Posted: Tue Nov 27, 2007 6:35 pm
by Munich
ryengineer wrote:X61s cannot utilize the higher speed of PC2-6400 (800 MHz), it will run at 5300 (667 Mhz) memory speed.
Noob question: If the backplane of the X61t is 800 Mhz as stated on the Lenovo site, can it now be able to use the PC2-6400 memory?
Re: PC-5300 vs PC-6400 memory
Posted: Tue Nov 27, 2007 8:08 pm
by ryengineer
Munich wrote:Noob question: If the backplane of the X61t is 800 Mhz as stated on the Lenovo site, can it now be able to use the PC2-6400 memory?
Thinkpad X61 tablet PC is able to use PC2-6400 memory but it won't run at the highest possible speed of the motherboard.
Re: PC-5300 vs PC-6400 memory
Posted: Wed Nov 28, 2007 7:22 pm
by apbudha
ryengineer wrote:
Thinkpad X61 tablet PC is able to use PC2-6400 memory but it won't run at the highest possible speed of the motherboard.
why?
Re: PC-5300 vs PC-6400 memory
Posted: Wed Nov 28, 2007 7:27 pm
by Munich
apbudha wrote:ryengineer wrote:
Thinkpad X61 tablet PC is able to use PC2-6400 memory but it won't run at the highest possible speed of the motherboard.
why?
Yeah, the unresting minds are asking "Why?"
Posted: Wed Nov 28, 2007 8:35 pm
by ryengineer
Posted: Wed Nov 28, 2007 9:50 pm
by apbudha
thank you. I think this passage explains it best:
"Even though the Santa Rosa FSB is 800MHZ, the memory controller is set to only run at 533MHZ or 667MHZ."