How do i check ram speed in CPU-z?

[mkristian]

so i got a NB frequency of 1900mhz more or less and a dram frequency of 665.4mhz. My FSB Dram is 3:10.

I have googled this but all i could find was info on what programs to use, not actually how i can find out the speed of my ram.

I just want to know if my ram is 1033/1300/1600 speed. Is it 1330? Do i multiply the dram frequency by 2 or something, that results in roughly 1300mhz?

Its a 4gb single stick ram and its kingston.

 

[Newf]

Run CPU-z
You will see a window with the cpu tab highlighted showing system information.
Click on the "memory" tab to see the actual speed and timings your ram is running.
Click on the "SPD" tab to see the memory rated speed and JEDEC and EPP timings.

 

[mkristian]

i see 667mhz. Nowhere does it tell me if i have 1300/1600 speed ram

 

[Dereck47]

i see 667mhz. Nowhere does it tell me if i have 1300/1600 speed ram

With Dual Channel you multiply that number by 2; so your speed is 1334MHz.

 

[towhog66]

i see 667mhz. Nowhere does it tell me if i have 1300/1600 speed ram

With Dual Channel you multiply that number by 2; so your speed is 1334MHz.

so for me its like this? 1066.4 X 2 = 2133?

 

[Tradesman1]

Yep

 

[Jaip]

late reply but still..
Lets say a CPU supporting 1066/1333 MHz... how can CPU-Z show's something above that..
Can you let your RAM (lets say you have 2133MHz ram) run on higher speeds that the CPU support? Does this have any use/effect/drawback?

 

[Tradesman1]

Using Intel as an example, they drastically understate the capabilities of their CPUs, the MC is rated to run (say the Haswells) 1600 DRAM natively, most all can run run faster DRAM with just a slight OC of the MC (memory controller), that will often take most Haswells right up through 1866-2400, from there on higher it often takes a slight OC of the CPU irtself to run say 2400-3000+

 

[Jaip]

so would you say that a lynnfield (i7-860 who's rated for only 1066-1333) can run memory on 2133 ?

 

[Tradesman1]

Yes, with an OC

 

[Jaip]

He Tradesman1 question,
I'm currently running a stable OC of my CPU (i7-860 @ 3.6GHz with BCLK 180, multiplier 20, Vcore 1.1875 Vtt 1.16V (Vtt not sure of) )
so because of the BLCK i can chose my ram speed with multiplier (12,10,8,6) with 12 it gives: 2160 is this to much for 2133 memory?
with memory multiplier on 10 i get 1800..

Or would you recommend choosing a BLCK in function of your ram and then changing cpu multiplier to get +/- wanted OC of the CPU?

 

[Tradesman1]

That sounds good as is

 

[Jaip]

Can you give thumps up in this forum?, because thumps up for your friendly/fast and good responses !

 

[Tradesman1]

Click the Best Solution Button in the Response you like best

 

[Jaip]

hmm I don't see such a button ... :/

 

[Tradesman1]

Should be a Green "Pick as the Solution" button in each response you got

 

[Jaip]

nope.. maybe only for the one who started the thread?

 

[Tradesman1]

Yep, oh well we heard your thanks and that's plenty didn't even notice you picked up on another thread....next time you have a question, please start a new thread, C U around

 

[dmstewart]

Is Quad Channel still multiplied by 2 to get speed/Freq? Mine is supposed to be a Quad channel DDR4 2133mhz kit and its reading at 1066 in cpu-z

 

[Tradesman1]

The channels used makes no difference - DDR is DOUBLE data rate - so you take true freq (here 1066) x 2 to get effective data rate of 2133....Channels is impacted by how the DRAM is seen by the memory controller, a stick of DRAM is a 64bit singular device when a MC sees DRAM in dual channel it treats it as a 128bit device - if the the MC runs Quad channel than all the DRAM is seen as a 256 bit device - so it runs more effectively

 

[dmstewart]

The channels used makes no difference - DDR is DOUBLE data rate - so you take true freq (here 1066) x 2 to get effective data rate of 2133....Channels is impacted by how the DRAM is seen by the memory controller, a stick of DRAM is a 64bit singular device when a MC sees DRAM in dual channel it treats it as a 128bit device - if the the MC runs Quad channel than all the DRAM is seen as a 256 bit device - so it runs more effectively

You rock. Ive been trying to get the details of that inquiry for a while and you just explained it perfectly. Thanks. I upvoted the answer even though its a tad bit off the topic of the OP's question; I think its an important add-on to this topic

 

[Tradesman1]

Common question which often comes up, I wrote an article on DDR3 - FAQs and Fiction you might find of interest - can get to both parts from here:

http://www.tomshardware.co.uk/answers/id-2741495/ddr3-faqs-fiction.html

 

[dmstewart]

Common question which often comes up, I wrote an article on DDR3 - FAQs and Fiction you might find of interest - can get to both parts from here:

http://www.tomshardware.co.uk/answers/id-2741495/ddr3-faqs-fiction.html

Nice. Reading it now. Thanks again

 

[Tradesman1]

No worries, C U

 

[FreshPrinceofMN]

No worries, C U

So When I see DDR3, size 16GB channel is Quad. DRam Frequency 800. Do i multiply by 2 or 4?