What is the MHz speed of this laptop's RAM based on the CPU-Z screenshots?

[flakwon]

Hello everyone,

I tried looking what it says on the RAM chip, I tried looking it up in the BIOS but it doesn't say it anywhere.

In CPU-Z it says a bunch of things but I'm not too sure how to interpret them as I read sometimes I need to multiply by a factor of 2 or 3 - I'm really not sure. I think it's either 2x399 = 800 or 667 as per the SPD tab.
http://imgur.com/s19wg1z

I have taken screenshots of what CPU-Z says so I'd be really grateful if you could tell me what the MHZ is so I could buy another 2GB module for a total of 4.


The laptop is an Acer Aspire 5334 series. It's not mine - I tried looking up what MHz it supports on Acer's website but as expected (and this is probably biased) I found nothing helpful at all there.

Also is it completely necessary for the 2 modules to have matching speeds?

Thank you all for reading my question!

 

[Chicano]

It's a 1333Mhz module...

Slot #1 Max Band Width = PC10700 (667Mhz) 667Mhz x2 since it's Dual Data Ram = 1134Mhz or rated at 1333Mhz


EDIT: The computer supports up to 4GB of 1600Mhz DDR3 RAM

Acer Aspire 5334
http://www.lapspecs.com/detail/acer+aspire+5334

As for non-matching module speeds, it's better to avoid them... you never know what can happen... the computer may not even boot though most time they do, and no issues may happen rightaway, but they may come later, and depending on the task, will be the severity. Issues like; performance instability, momentary or prolonged pauses, laggs, freezes that can last from fraction of a second to minutes depending on how different the RAM size and speed and the task being processed, as well as the HW age and speed and OS condition. So, it's better to match both modules up to the same brand and model for best results, and when that's not possible, at least match them to the same cas latency, timings and voltage.

 

[flakwon]

Sorry for the late reply!

Thank you very much for your detailed answer!