ram calculation

[vshah]

Just wondering what is the exact calculation from memory's rating such as 3.3ns to the max clock it can run at...

thanks,
-Vivan

 

[VIAN]

1/.0000000033

The formula known by all is:

frequency = 1 / time

time = 1 / frequency

frequency ex. 100MHz

time ex. 10ns

 

[NEVERwinter]

1000/3.3

 

[vshah]

x 2 for ddr 🙂

 

[otispunkmeyer]

ok ill do it for u

4.0ns = 250mhz (500mhz effective for ddr)
3.3ns = 303mhz (606mhz)
2.8ns= 357mhz (714mhz)
2.2ns = 454mhz (908mhz)

F= 1/T

T being the timing for ur ram ie 3.3ns (nano = x10^-9)

3.3ns= 3.3x10^-9
then do 1 over that

 

[Cerb]

1000/Xns works out for MHz, and is easy on the brain.
So 3.3ns RAM is 303MHz (606 DDR)

 

[VIAN]

Consistancy is what I'm all about, and the problem with the easy on the mind brain is that it won't be so easy when the ns becomes ps. Consistancy, not new startands that are forever changing.