Archived from groups: alt.comp.hardware.overclocking,comp.sys.laptops,uk.comp.sys.laptops (
More info?)
What does 52% bandwidth efficiency mean? I've never seen that before (maybe
because I've choosen to use SiSoft Sandra 2004 rather than 2005. It may be
that whatever bandwidth efficiency DOES mean is not what you THINK it means,
and in any case may not be very meaningful for overall performance. Don't
rely on that phrase unless you understand exactly WHAT it means, and unless
you are completely confident in what SiSoft Sandra reports. Though SiSoft
Sandra has become a much more reliable source of information about systems
it inspects over the years, there are still likely to be cases, as in the
past, when it reports more than it can know.
At current clock speeds, any Pentium CPU requires access to data and
instructions MUCH more quickly than ANY main memory can deliver. NO Intel or
AMD based system can access random data and instructions at ANYTHING like
the full theoretical bandwidth of either the CPU OR main memory. Examine
the concepts of memory delay, memory overhead, and cache operation.
Phil Weldon
"Sacrum" <sacrum@clara.co.uk> wrote in message
news:1126042504.11817.0@echo.uk.clara.net...
> Thanks all for helpful advice....
>
> I am in agreement with Phil that the gains vs cost makes my current setup
> more attractive!!!
>
> Does anyone know whether my clevo D900T chassis will support dual DDR2 -
> I've run sisandra/memory bandwidth test and my current setup is only 52%
> bandwidth efficient - on my amd desktop its 98%! When I get the chance
> I'll take out one of my 512mb dimms leaving just the two and see if that
> changes things....
>
> Although what phil says the hitachi 72k is very tempting!!!!
>
> "Phil Weldon" <notdiscosed@example.com> wrote in message
> news:O6nTe.7956$_84.1510@newsread1.news.atl.earthlink.net...
>> 'Sacrum' wrote:
>> | Okay - I'll take that on board....
>> |
>> | What would be better another hdd (5200 or 7200?) and set it up as RAID
>> 0 or
>> | go for a 7200rpm hdd single?
>> _____
>>
>> At this point I'd suggest taking a deep breath and stepping back for
>> comtemplation.
>>
>> You haven't posted any information on your goals and how you use the
>> laptop.
>> You might, depending on goals and use, might want to consider a desktop
>> system built for performance/overclocking. Spending addtional money on
>> increasing the performanc of your laptop may not bring much improvement,
>> and notebooks/laptops are notoriously fragile compared to desktops, as
>> well as much more expensive to repair. Money spent to gain marginal
>> performance increase in a system that may not be functioning in three
>> years, well, perhaps is money not well spent. If you currently have
>> applications that won't run unless you increase the performance of your
>> system 5%, then it may be worth it. If all your applications work
>> satisfactorily now, then don't fix what isn't broken. If you have
>> applications than need more than a 5% performance increase, then a
>> desktop system should be considered.
>>
>> Phil Weldon
>>
>> "Sacrum" <sacrum@clara.co.uk> wrote in message
>> news:1126035550.2692.0@demeter.uk.clara.net...
>>> Okay - I'll take that on board....
>>>
>>> What would be better another hdd (5200 or 7200?) and set it up as RAID 0
>>> or go for a 7200rpm hdd single?
>>>
>>> chris
>>>
>>>
>>>
>>> "BigJIm" <woody10277@hotmail.com> wrote in message
>>> news:TpmdnRoTT47tcYDeRVn-tw@comcast.com...
>>>> Phil is right, overclocking a laptop is not a good idea.
>>>> Basically a laptop is "what you see is what you get"
>>>> You could put a new 7200 speed hard drive in that would make it faster.
>>>> If you have Norton on it, I would get something else.
>>>>
>>>> "Sacrum" <sacrum@clara.co.uk> wrote in message
>>>> news:1126026120.19469.0@a lovely person.uk.clara.net...
>>>>> Hi all,
>>>>>
>>>>> I have a laptop (Clevo D900T) with the following spec:
>>>>>
>>>>> Intel P4 650 3.4ghz
>>>>> 3x512mb DDR2 PC4300 ram (SODimm)
>>>>> 5200rpm SATA HDD
>>>>> Nvidia 6800 ultra
>>>>>
>>>>> I've run Sisandra which reports the ram / efficiency is only 52% - Is
>>>>> there a better configuartion for the ram such as 2 x 1gb DDR2 (Any
>>>>> good brands?)?
>>>>>
>>>>> Can I get faster ram and would this allow for a more stable fsb
>>>>> increase?
>>>>>
>>>>> Any other things I can do to improve overall system speed?
>>>>>
>>>>> Tia
>>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>
>