Determining correct RAM timings

[Dunkleosteus]

Hello guys,

 

Can anyone tell me how to determine ram timings for this module? Is it even possible in this case?

Thank you!

[mgrandy]

11-11-11 at 1.5V acording to the data sheet Google is your friend

[Dunkleosteus]

2 minutes ago, mgrandy said:

11-11-11 at 1.5V acording to the data sheet Google is your friend

Shouldn't there be 4 pairs of timings? CAS/tRCD/tRPD/tRAS? How do I find out the tRAS value?

 

Thanks!

[mariushm]

You can use a software like CPU-Z or Aida64 to read the SPD profiles from the memory stick. These give you the complete timings, not just the first 3 values.

 

You can also just google for the product code, KVR16N11/8, and you'll find the datasheet for the sticks.

[mgrandy]

type KVR16N11/8 into google and get the data sheet

 

like so

 

https://www.kingston.com/datasheets/kvr16n11_8.pdf

 

as stated there are many configs for it this is but a general one

[Dunkleosteus]

There is no TRAS value on that data sheet. Shouldn't these values be written on the module itself? Does SPD in CPUz specify the standard values? Is there a way to calculate the TRAs value based on the available ones?

 

Thank you and excuse me for my lack of knowledge!

 

EDIT: My mistake, the tRAS value is specified on the data sheet, I have missed it somehow. 

 

[mariushm]

I don't know what you're so stressed about.

The motherboard will automatically read the profiles and set the highest performance yet compatible preset. You can then load the operating system and use software to read the parameters from inside the memory sticks using those programs i mentioned.

 

Also if you google " KVR16N11/8  SPD" in google images you'll find pictures of cpu-z with the presets, here's one result  : https://forums.vrzone.com/rams/2943952-1-x-8gb-kingston-kvr16n11-8-1600mhz-ddr3-2-x-kingston-g-skill-4gb-1600mhz-ddr.html

 

As you can see the highest memorized preset is  838 Mhz ( x 2 = 1666 Mhz)  , 11-11-11-30-41 1.5v  ... since you probably run them at 1600 Mhz (2x800), these timings would work (as your frequency is between the previous profile and this profile).

If you configure the memory at let's say 1333 Mhz (which can happen if you have some chipsets and/or some processors), then you could use the timings from the 761 Mhz (x2= 1522 Mhz) preset, because 1333 Mhz is less than 1522 Mhz.

 

Double check the SPD values for your particular stick, the stick in the picture is 8 GB, so the timings or frequencies on that stick may be slightly different (due to more chips or bigger size chips on the stick itself).