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Elia231100
Paper Tape
Posts: 3
Registered: ‎10-17-2016
Location: IT
Views: 1,315
Message 1 of 3

Lenovo G50-45 RAM speed limited to 800Mhz

Good morning everyone,

My laptop has 8GB of RAM memory, with a declared speed of 1600Mhz. The problem is that if I go to the task manager, the effective ram speed is 800Mhz. Can someone help me solving this problem?

Thank you in advance.

sclexman
Bit Torrent
Posts: 4,580
Registered: ‎11-22-2011
Location: US
Views: 1,263
Message 2 of 3

Re: Lenovo G50-45 RAM speed limited to 800Mhz

Your I/O bus clock is 800 MHZ.

Your data rate is 1600 mt/s (megatransfer per second).

Your peak transfer rate is 12800 MB/s.

It takes 2 cycles to read the rising and falling edge of memory.

1600/2=800. 

 

Because the hertz is a measure of cycles per second, and no signal cycles more often than every other transfer, describing the transfer rate in units of MHz is technically incorrect, although very common.

https://en.wikipedia.org/wiki/DDR3_SDRAM

 

PC3-12800 1600mhz

Elia231100
Paper Tape
Posts: 3
Registered: ‎10-17-2016
Location: IT
Views: 1,255
Message 3 of 3

Re: Lenovo G50-45 RAM speed limited to 800Mhz

Thank you for your answer!

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