[SOLVED] Higher speed ram is better?

[nilesm]

I checked the compatible parts for my lenovo laptop and it seems that they have tested it with 16GB 2666 mhz cl 19 ram.
In my country I looked up in all local stores and I couldn't find ram with lower cl in around the same price.

so i have these options:

16GB SODIMM DDR4 2666MHZ CRUCIAL MODULE (CT16G4SFRA266) CL 19 (76 euros) dual ranked

16GB DDR4 3200MHZ CRUCIAL SO-DIMM CT16G4SFRA32A MEMORY CL22 dual ranked
(76 euros)
(even if the pc doesn't support 3200MHZ (supports till 2666mhz))

and 16GB DDR4 2400MHZ CRUCIAL SO-DIMM MEMORY CL17 not sure if it's single ranked (is ten euros more expensive than the other two)

I'm just thinking to get the one with higher speed because of the same price with cl 19 ram but not sure if the laptop will support it or if it's good idea
laptop model: LENOVO 330-15ICH intel i7 processor with nvidea graphics card
it has a 4gb soldered ram in it. and an extra slot with 8gb
I also read on the internet that single ranked memories are faster than dual ranked. is that true?

 

[kerberos_20]

sine u have 4GB soldered, no matter which ram u put inside, ull get limited by that soldered ram
so no performance gain with dual rank module
and only 8GB ram will be in dual channel, any remaining ram will work in single channel

anyway this ram should be compatible its 16GB 2666MHz CL19 and under 70eur (for germany)
https://geizhals.eu/crucial-so-dimm-16gb-ct16g4sfd8266-a1748339.html#offerlist

 

[nilesm]

sine u have 4GB soldered, no matter which ram u put inside, ull get limited by that soldered ram
so no performance gain with dual rank module
and only 8GB ram will be in dual channel, any remaining ram will work in single channel

anyway this ram should be compatible its 16GB 2666MHz CL19 and under 70eur (for germany)
https://geizhals.eu/crucial-so-dimm-16gb-ct16g4sfd8266-a1748339.html#offerlist

what's the difference with the first ram i have posted?

wdym? "and only 8GB ram will be in dual channel, any remaining ram will work in single channel"

 

[kerberos_20]

what's the difference with the first ram i have posted?

both should perform same, both have 8 chips with same timings

wdym? "and only 8GB ram will be in dual channel, any remaining ram will work in single channel"

there will be some performance variations when data will be on fast ram and slow ram

 

[nilesm]

both should perform same, both have 8 chips with same timings


there will be some performance variations when data will be on fast ram and slow ram

thank you for your reply. so its not recommended to buy the faster 3200mhz ram?

 

[kerberos_20]

thank you for your reply. so its not recommended to buy the faster 3200mhz ram?

if crucial lists it as compatible than it should work, albait on lower speed
theres no performance gain goin in any route, u get just more available ram
pick whats cheaper

 

[nilesm]

if crucial lists it as compatible than it should work, albait on lower speed
theres no performance gain goin in any route, u get just more available ram
pick whats cheaper

it's the same price but the cl is higher
idk if it gets lower if speed is lower

 

[kerberos_20]

cl is in ratio with clock

 

[geofelt]

Run cpu-Z.
It will tell you what speed/cas ram you now have installed.
There is no sense in buying anything different, all ram must run at the same speed and timings.
Crucial lists several options which will work:
https://www.crucial.com/compatible-upgrade-for/lenovo/ideapad-330-15ich
Buy the ram that matches your current speed and timings.

When you add 8 or 16gb, only 8gb will operate in faster dual channel mode.
The original 4gb plus the first 4gb of the addition.
The odd capacity will run in single channel mode.
This is called flex mode.
Do not be alarmed. You are now running in single channel mode.
And,when using discrete graphics, ram speed is not important to intel performance.

 

[nilesm]

Run cpu-Z.
It will tell you what speed/cas ram you now have installed.
There is no sense in buying anything different, all ram must run at the same speed and timings.
Crucial lists several options which will work:
https://www.crucial.com/compatible-upgrade-for/lenovo/ideapad-330-15ich
Buy the ram that matches your current speed and timings.

When you add 8 or 16gb, only 8gb will operate in faster dual channel mode.
The original 4gb plus the first 4gb of the addition.
The odd capacity will run in single channel mode.
This is called flex mode.
Do not be alarmed. You are now running in single channel mode.
And,when using discrete graphics, ram speed is not important to intel performance.

thank you for your suggestion. it's hard to find the same cl. what I should do?

 

[geofelt]

thank you for your suggestion. it's hard to find the same cl. what I should do?

What does cpu-Z tell you about your current installed 4gb?
speed,cas...
If you click on the spd tab, you may get multiple sets of speeds and timings at which the ram will work.

Pick your closest match for the new ram.

 

[nilesm]

What does cpu-Z tell you about your current installed 4gb?
speed,cas...
If you click on the spd tab, you may get multiple sets of speeds and timings at which the ram will work.

Pick your closest match for the new ram.

well yes but there is something i don't understand. i checked the ram that comes with the laptop (from lenovo) and it's 8gb samsung 2666mhz cl 19. shouldn't i go for cl19?