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Groups > comp.sys.mac.hardware.misc > #231 > unrolled thread

comparing RAM configurations

Started byTim Lance <nope@nada.com>
First post2011-09-04 14:07 -0500
Last post2011-09-05 12:52 +1200
Articles 4 — 3 participants

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  comparing RAM configurations Tim Lance <nope@nada.com> - 2011-09-04 14:07 -0500
    Re: comparing RAM configurations Tim Lance <nope@nada.com> - 2011-09-04 15:10 -0500
      Re: comparing RAM configurations "Douglas C. Neidermeyer" <sgt@arms.edu> - 2011-09-04 19:38 -0400
      Re: comparing RAM configurations dempson@actrix.gen.nz (David Empson) - 2011-09-05 12:52 +1200

#231 — comparing RAM configurations

FromTim Lance <nope@nada.com>
Date2011-09-04 14:07 -0500
Subjectcomparing RAM configurations
Message-ID<9ci0j9FtifU1@mid.individual.net>
Just got a 15" MBP, 2.2 GHx i7 "sandybridge" with 4 GB DDR3 1666.

I happen to have 8 (2x4) GB DDR3 1066 and wonder which set is "better."

I am sufficiently clueless to learn from what I have googled. Any help?

-- 

Tim

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#232

FromTim Lance <nope@nada.com>
Date2011-09-04 15:10 -0500
Message-ID<9ci49sFsubU1@mid.individual.net>
In reply to#231
On Sun, 4 Sep 2011 14:07:22 -0500, Tim Lance wrote
(in article <9ci0j9FtifU1@mid.individual.net>):

> Just got a 15" MBP, 2.2 GHx i7 "sandybridge" with 4 GB DDR3 1666.
> 
> I happen to have 8 (2x4) GB DDR3 1066 and wonder which set is "better."
> 
> I am sufficiently clueless to learn from what I have googled. Any help?
> 
> 

1333 - not 1666

-- 

Tim

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#235

From"Douglas C. Neidermeyer" <sgt@arms.edu>
Date2011-09-04 19:38 -0400
Message-ID<j4126c$g3m$1@news.albasani.net>
In reply to#232
On 9/4/11 4:10 PM, Tim Lance wrote:
> On Sun, 4 Sep 2011 14:07:22 -0500, Tim Lance wrote
> (in article<9ci0j9FtifU1@mid.individual.net>):
>
>> Just got a 15" MBP, 2.2 GHx i7 "sandybridge" with 4 GB DDR3 1666.
>>
>> I happen to have 8 (2x4) GB DDR3 1066 and wonder which set is "better."
>>
>> I am sufficiently clueless to learn from what I have googled. Any help?
>>
>>
>
> 1333 - not 1666
>

Even though the 1333 sticks are faster, I'd think 8 GB of 1066 will be 
much better than 4 GB of 1333.

-- 
Respectfully submitted,

Douglas C. Neidermeyer,
Sergeant-at-Arms

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#237

Fromdempson@actrix.gen.nz (David Empson)
Date2011-09-05 12:52 +1200
Message-ID<1k74c7y.9ylwr417iizadN%dempson@actrix.gen.nz>
In reply to#232
Tim Lance <nope@nada.com> wrote:

> On Sun, 4 Sep 2011 14:07:22 -0500, Tim Lance wrote
> (in article <9ci0j9FtifU1@mid.individual.net>):
> 
> > Just got a 15" MBP, 2.2 GHx i7 "sandybridge" with 4 GB DDR3 1666.
> > 
> > I happen to have 8 (2x4) GB DDR3 1066 and wonder which set is "better."
> > 
> > I am sufficiently clueless to learn from what I have googled. Any help?
> 
> 1333 - not 1666

The mid 2011 MacBook Pro family requires DDR3-1333 memory. DDR3-1066
will almost certainly not work in that model because the memory isn't
fast enough.

You can usually use faster memory within the same family (e.g. DDR3-1333
would usually work in a computer expecting DDR3-1066, and a friend just
did this with his 2010 MacBook Pro). There is usually no speed benefit
from this, but there may be a slight reduction in power consumption. 

Later memory generations are often cheaper than older ones, so this is
sometimes a useful way to save money, as well as potentially being able
to reuse the memory in a newer computer. Unfortunately memory technology
is advancing fast enough that you will probably find your next computer
uses a different family (DDR4?), unless you buy a new computer every
year or two.

-- 
David Empson
dempson@actrix.gen.nz

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