[X4U] Mac Pro RAM question

[Zane H. Healy]

If you read reports on how to optimize your performance you'll find 
that you degrade it by going with 4 or 8 modules.  The Apple website 
shows the systems as shipping with either 3 or 6 1GB sticks.  They 
will do configs with 4 or 8 sticks if you want, but the standard is 3 
or 6.

There is no option to have 1 or 2 sticks.

Zane



At 7:50 AM +1000 8/17/10, Christopher Collins wrote:
>And looking at the Apple site for the new Mac Pros shows them all 
>shipping with either single modules or pairs of modules.
>
>1 modules, 2 modules, 4 modules, 6 modules and 8 modules.
>
>cjc
>
>On 17/08/2010, at 7:38 AM, Christopher Collins wrote:
>
>>  3 memory channels, not 3 memory modules. Memory channels do not 
>>need to be directly mapped to memory modules.
>>
>>  Different thing.
>>
>>  cjc
>>
>>  On 16/08/2010, at 11:57 PM, Zane H. Healy wrote:
>>
>>>  Here is the info on the CPU's, and they list them all as having 
>>>three memory channels.  I've yet to see any details on the chipset 
>>>used in the new systems.  It's not easy finding any *real* info on 
>>>them. :-(
>>> 
>>>http://ark.intel.com/Compare.aspx?ids=41313,39721,47917,40200,47925,47922,47920,
>>>
>>>  Zane
>>>
>>>
>>>  At 5:38 PM +1000 8/16/10, Christopher Collins wrote:
>>>>  Actually, the chipset used in the new Mac Pros (H55) I believe 
>>>>uses pairs or memory modules, not triples.
>>>>
>>>>  Depends on the chipset what is required.
>>>>
>>>>  cjc
>>>>
>>>>
>>>>  On 16/08/2010, at 11:59 AM, Zane H. Healy wrote:
>>>>
>>>>>  While they have 4 slots in a single CPU model, and 8 slots in 
>>>>>the dual CPU model, they are designed such that you have 'triple 
>>>>>channel memory'.  Putting 4 or 8 sticks in works, but you 
>>>>>degrade your performance.
>>>>>
>>>>>  Zane
>
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-- 
| Zane H. Healy                    | UNIX Systems Administrator |
| healyzh at aracnet.com              | OpenVMS Enthusiast         |
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