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Upgrading laptop RAM, a MHz question


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#1 Karzahni

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Posted 22 August 2016 - 07:21 AM

My laptop runs 1333 MHz DDR3 RAM, and I was wanting to replace one of the sticks, and potentially the other one too later on. Are there any benefits to running higher MHz RAM or will the laptop just run the RAM at 1333 regardless?

 

I would assume that if one stick is 1333 and one is 1600 it would run both at 1333. But if both are 1600, what speed will it run at?

 

I know differences are negligible, but if 1600 is $1 extra than 1333, I may as well buy it so that when I change the second one I can run 2 at 1600 MHz.

 

In detail:

Currently: 2GB 1333 MHz module + 4GB 1333 MHz module

 

I plan on changing to: 8GB 1600 MHz module + 4GB 1333 MHz module

 

And later: 2x 8GB 1600 MHz modules

 

Dell XPS L702x

Intel Core i7-2670QM

Fedora Cinnamon 24 x64

 

Thanks


Edited by hamluis, 25 August 2016 - 10:58 AM.
Moved from System Building to Internal Hardware - Hamluisl.

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#2 Captain_Chicken

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Posted 22 August 2016 - 07:28 AM

RAM speeds don't make that much of a difference nowadays. Go with whatever is cheaper.


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#3 Drillingmachine

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Posted 22 August 2016 - 07:33 AM

If mixing 1600 and 1333  modules, both probably run at 1333 as laptop is configured for it and CPU officially supports only 1333. So 1600 MHz won't bring any advantage.



#4 Platypus

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Posted 22 August 2016 - 08:12 AM

Do you have the version with 2 or 4 RAM slots?

According to the Dell manual (and Crucial memory selector), DIMM capacities up to 4GB, so 4 slot version required for 16GB, 4 x 4GB, 2 slot version up to 8GB, 2 x 4GB.

ftp://ftp.dell.com/Manuals/all-products/esuprt_laptop/esuprt_xps_laptop/xps-l702x_setup%20guide_en-us.pdf

Edited by Platypus, 22 August 2016 - 08:45 AM.

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#5 Karzahni

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Posted 23 August 2016 - 03:38 AM

Do you have the version with 2 or 4 RAM slots?

According to the Dell manual (and Crucial memory selector), DIMM capacities up to 4GB, so 4 slot version required for 16GB, 4 x 4GB, 2 slot version up to 8GB, 2 x 4GB.

ftp://ftp.dell.com/Manuals/all-products/esuprt_laptop/esuprt_xps_laptop/xps-l702x_setup%20guide_en-us.pdf

 

2 slots. Does that mean I can only run 4 GB modules? In that case I'll just match it up and buy a single 4GB 1333. How inconvenient. I wanted more than 8.


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#6 Platypus

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Posted 23 August 2016 - 04:01 AM

All the indicators are that the 2 slotter maxes out at 8GB.

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#7 Karzahni

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Posted 24 August 2016 - 06:59 PM

All the indicators are that the 2 slotter maxes out at 8GB.

 

Yeah, my setup guide says to only use up to 4 GB sticks. I don't feel like buying an 8 GB simply to see if it works. Thanks.


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