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External
Since: Nov 10, 2005
Posts: 14
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(Msg. 1) Posted: Fri Dec 07, 2007 5:59 pm
Post subject: Looking for a power supply recommendation
Archived from groups: alt>comp>hardware (more info?)
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I will be building a new PC in the new year and I'm looking for
recommendations for the PSU. As this is something many people overlook and I
think it is the most critical component as far as budget goes for this
component - price is no object
My new system will have the fastest 45nm Intel penryn quad core processor I
can buy in February. I will be looking at the new nVidia 780i chipset so I
can run 2 x nvidia 8800GT graphics cards in SLI. (Intels x38 chipset only
supports ATI Crossfire )
I will be having 5 x 1Tb SATA hard disks, DVD, Floppy, an array of cold
cathode lighting, and using low noise fans for air cooling (the Scythe slip
streams look good though in the future I may move to water cooling)
My PSU requirements are:
Quiet
Clean power to all devices
Spare capacity in case I add extra drives or PCI cards
Quiet
Modular would be nice but I'm not worried if the unit isn't
Oh - did I mention quiet
Please note that by quiet I do not mean silent. I don't think silient units
are any good.
I used to have two power supplies in my current PC (total of 850W) but I put
a PC Power & Cooling 1Kw PSU unit in to replace them there was a significant
increase in the noise coming from it which is why I'm now looking for a
quiet (low noise) one.
I plan to be putting in noise reduction measures for the other components as
well.
Someone has suggested I use the PC Power & Cooling 750Watt quiet model but
when I checked the specs it the DBa it produces is the same as my current
noisy 1KW PSU.
Thanks |
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External
Since: Dec 08, 2004
Posts: 310
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(Msg. 2) Posted: Fri Dec 07, 2007 5:59 pm
Post subject: Re: Looking for a power supply recommendation [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Gilgamesh wrote:
> I will be building a new PC in the new year and I'm looking for
> recommendations for the PSU. As this is something many people overlook and I
> think it is the most critical component as far as budget goes for this
> component - price is no object
>
> My new system will have the fastest 45nm Intel penryn quad core processor I
> can buy in February. I will be looking at the new nVidia 780i chipset so I
> can run 2 x nvidia 8800GT graphics cards in SLI. (Intels x38 chipset only
> supports ATI Crossfire )
> I will be having 5 x 1Tb SATA hard disks, DVD, Floppy, an array of cold
> cathode lighting, and using low noise fans for air cooling (the Scythe slip
> streams look good though in the future I may move to water cooling)
>
> My PSU requirements are:
> Quiet
> Clean power to all devices
> Spare capacity in case I add extra drives or PCI cards
> Quiet
> Modular would be nice but I'm not worried if the unit isn't
> Oh - did I mention quiet
>
> Please note that by quiet I do not mean silent. I don't think silient units
> are any good.
>
> I used to have two power supplies in my current PC (total of 850W) but I put
> a PC Power & Cooling 1Kw PSU unit in to replace them there was a significant
> increase in the noise coming from it which is why I'm now looking for a
> quiet (low noise) one.
>
> I plan to be putting in noise reduction measures for the other components as
> well.
>
> Someone has suggested I use the PC Power & Cooling 750Watt quiet model but
> when I checked the specs it the DBa it produces is the same as my current
> noisy 1KW PSU.
For power supply reviews, try:
www.jonnyguru.com
www.silentpcreview.com (also information about making computes quiet)
www.hardocp.com
www.xbitlabs.com
www.extremeoverclocking.com
Modular? Really? PCP&C doesn't like modular because the extra
connectors drop a teeny bit more voltage. |
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External
Since: Jan 03, 2004
Posts: 7693
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(Msg. 3) Posted: Sat Dec 08, 2007 10:38 am
Post subject: Re: Looking for a power supply recommendation [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Sat, 8 Dec 2007 08:33:48 +1030, "Gilgamesh"
<gilgamesh.TakeThisOut@spam.me.not> wrote:
>I will be building a new PC in the new year and I'm looking for
>recommendations for the PSU. As this is something many people overlook and I
>think it is the most critical component as far as budget goes for this
>component - price is no object
>
>My new system will have the fastest 45nm Intel penryn quad core processor I
>can buy in February. I will be looking at the new nVidia 780i chipset so I
>can run 2 x nvidia 8800GT graphics cards in SLI. (Intels x38 chipset only
>supports ATI Crossfire )
>I will be having 5 x 1Tb SATA hard disks, DVD, Floppy, an array of cold
>cathode lighting, and using low noise fans for air cooling (the Scythe slip
>streams look good though in the future I may move to water cooling)
>
>My PSU requirements are:
>Quiet
>Clean power to all devices
>Spare capacity in case I add extra drives or PCI cards
>Quiet
>Modular would be nice but I'm not worried if the unit isn't
>Oh - did I mention quiet
>
>Please note that by quiet I do not mean silent. I don't think silient units
>are any good.
>
>I used to have two power supplies in my current PC (total of 850W) but I put
>a PC Power & Cooling 1Kw PSU unit in to replace them there was a significant
>increase in the noise coming from it which is why I'm now looking for a
>quiet (low noise) one.
>
>I plan to be putting in noise reduction measures for the other components as
>well.
>
>Someone has suggested I use the PC Power & Cooling 750Watt quiet model but
>when I checked the specs it the DBa it produces is the same as my current
>noisy 1KW PSU.
>
>Thanks
You are designing a system that uses several hundred watts
of power. The PSU will not be quiet if it is properly
designed because it still has to be rid of it's own
generated heat plus a significant portion of the cased parts
heat due to using low flow, quiet case fans.
The quietest option would be to again use two PSU, as it
will nearly halve the thermal density in each PSU, while
providing twice the exhaust area and two fans so each can
run significantly slower and quieter. >> Stay informed about: Looking for a power supply recommendation |
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External
Since: Nov 10, 2005
Posts: 14
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(Msg. 4) Posted: Sat Dec 08, 2007 3:59 pm
Post subject: Re: Looking for a power supply recommendation [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"kony" <spam.DeleteThis@spam.com> wrote in message
news:idell3hcso8stuvivpc808utctv91ms2qt@4ax.com...
> On Sat, 8 Dec 2007 08:33:48 +1030, "Gilgamesh"
> <gilgamesh.DeleteThis@spam.me.not> wrote:
>
>>I will be building a new PC in the new year and I'm looking for
>>recommendations for the PSU. As this is something many people overlook and
>>I
>>think it is the most critical component as far as budget goes for this
>>component - price is no object
>>
>>My new system will have the fastest 45nm Intel penryn quad core processor
>>I
>>can buy in February. I will be looking at the new nVidia 780i chipset so I
>>can run 2 x nvidia 8800GT graphics cards in SLI. (Intels x38 chipset only
>>supports ATI Crossfire )
>>I will be having 5 x 1Tb SATA hard disks, DVD, Floppy, an array of cold
>>cathode lighting, and using low noise fans for air cooling (the Scythe
>>slip
>>streams look good though in the future I may move to water cooling)
>>
>>My PSU requirements are:
>>Quiet
>>Clean power to all devices
>>Spare capacity in case I add extra drives or PCI cards
>>Quiet
>>Modular would be nice but I'm not worried if the unit isn't
>>Oh - did I mention quiet
>>
>>Please note that by quiet I do not mean silent. I don't think silient
>>units
>>are any good.
>>
>>I used to have two power supplies in my current PC (total of 850W) but I
>>put
>>a PC Power & Cooling 1Kw PSU unit in to replace them there was a
>>significant
>>increase in the noise coming from it which is why I'm now looking for a
>>quiet (low noise) one.
>>
>>I plan to be putting in noise reduction measures for the other components
>>as
>>well.
>>
>>Someone has suggested I use the PC Power & Cooling 750Watt quiet model but
>>when I checked the specs it the DBa it produces is the same as my current
>>noisy 1KW PSU.
>>
>>Thanks
>
> You are designing a system that uses several hundred watts
> of power. The PSU will not be quiet if it is properly
> designed because it still has to be rid of it's own
> generated heat plus a significant portion of the cased parts
> heat due to using low flow, quiet case fans.
If you look at the specs for the Scythe Slip Stream range of fans you will
see they have quite a good air flow while keeping noise down. 
>
> The quietest option would be to again use two PSU, as it
> will nearly halve the thermal density in each PSU, while
> providing twice the exhaust area and two fans so each can
> run significantly slower and quieter.
> >> Stay informed about: Looking for a power supply recommendation |
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External
Since: Jan 03, 2004
Posts: 7693
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(Msg. 5) Posted: Sat Dec 08, 2007 5:18 pm
Post subject: Re: Looking for a power supply recommendation [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Sun, 9 Dec 2007 06:51:49 +1030, "Gilgamesh"
<gilgamesh.DeleteThis@spam.me.not> wrote:
>> You are designing a system that uses several hundred watts
>> of power. The PSU will not be quiet if it is properly
>> designed because it still has to be rid of it's own
>> generated heat plus a significant portion of the cased parts
>> heat due to using low flow, quiet case fans.
>
>If you look at the specs for the Scythe Slip Stream range of fans you will
>see they have quite a good air flow while keeping noise down.
Either they aren't using conservative ratings for their fans
like everybody else, or it is non-applicable to actual use.
There is no fan that has substantially lower noise:flow-rate
than other alternatives because the noise (in use) is
turbulence from nearby obstructions, turbulence unavoidable
as it's due to moving the air, any given flow rate. >> Stay informed about: Looking for a power supply recommendation |
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External
Since: Mar 29, 2004
Posts: 483
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(Msg. 6) Posted: Sat Dec 08, 2007 6:59 pm
Post subject: Re: Looking for a power supply recommendation [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"kony" <spam DeleteThis @spam.com> wrote in message
news:jt5ml35vivfvm6p3fj4uovh13sgvf42h80@4ax.com...
> On Sun, 9 Dec 2007 06:51:49 +1030, "Gilgamesh"
> <gilgamesh DeleteThis @spam.me.not> wrote:
>
>
>>> You are designing a system that uses several hundred watts
>>> of power. The PSU will not be quiet if it is properly
>>> designed because it still has to be rid of it's own
>>> generated heat plus a significant portion of the cased parts
>>> heat due to using low flow, quiet case fans.
>>
>>If you look at the specs for the Scythe Slip Stream range of fans you will
>>see they have quite a good air flow while keeping noise down.
>
> Either they aren't using conservative ratings for their fans
> like everybody else, or it is non-applicable to actual use.
> There is no fan that has substantially lower noise:flow-rate
> than other alternatives because the noise (in use) is
> turbulence from nearby obstructions, turbulence unavoidable
> as it's due to moving the air, any given flow rate.
Not true... Blade and housing design can affect the noise produced by a fan.
Two fans, moving the same amount of air, don't necessarily produce the same
amount of noise. >> Stay informed about: Looking for a power supply recommendation |
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External
Since: Oct 09, 2004
Posts: 2479
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(Msg. 7) Posted: Sat Dec 08, 2007 11:14 pm
Post subject: Re: Looking for a power supply recommendation [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Noozer wrote:
> "kony" <spam.DeleteThis@spam.com> wrote in message
> news:jt5ml35vivfvm6p3fj4uovh13sgvf42h80@4ax.com...
>> On Sun, 9 Dec 2007 06:51:49 +1030, "Gilgamesh"
>> <gilgamesh.DeleteThis@spam.me.not> wrote:
>>
>>
>>>> You are designing a system that uses several hundred watts
>>>> of power. The PSU will not be quiet if it is properly
>>>> designed because it still has to be rid of it's own
>>>> generated heat plus a significant portion of the cased parts
>>>> heat due to using low flow, quiet case fans.
>>> If you look at the specs for the Scythe Slip Stream range of fans you will
>>> see they have quite a good air flow while keeping noise down.
>> Either they aren't using conservative ratings for their fans
>> like everybody else, or it is non-applicable to actual use.
>> There is no fan that has substantially lower noise:flow-rate
>> than other alternatives because the noise (in use) is
>> turbulence from nearby obstructions, turbulence unavoidable
>> as it's due to moving the air, any given flow rate.
>
> Not true... Blade and housing design can affect the noise produced by a fan.
>
> Two fans, moving the same amount of air, don't necessarily produce the same
> amount of noise.
>
There are some unique designs out there. Their product line isn't very
wide, which is why you don't see more of these.
http://www.verax.de/verax.php?SID=1932475b6a2ee6938&template=cms_entry...chnik&g
Paul >> Stay informed about: Looking for a power supply recommendation |
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External
Since: Nov 19, 2007
Posts: 170
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(Msg. 8) Posted: Sun Dec 09, 2007 9:59 pm
Post subject: Re: Looking for a power supply recommendation [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Somewhere on teh interweb Gilgamesh typed:
> "kony" <spam RemoveThis @spam.com> wrote in message
> news:3fmml3p8tlfm5k2ruu4934itu8o2tsagcn@4ax.com...
>> Scythe is best avoided because of their dishonesty. Don't
>
> If the only source of information used is company propaganda you
> deserve what you get.
> However there are good reviews of the fans out there
> http://www.dragonsteel.us/index.php?option=com_content&task=view&id=52...Itemid=
>
> Why do you say they are dishonest? Simply because you don't believe
> their claims or do you have other experiences to back this up. I'm
> not being argumentative, I want to know about past bad practices
> before making decisions.
If you want to know bad practices look no further than the page you just
linked.
Specifically where it says:
"Sponsor: _Scythe_"
It's getting increasingly difficult to find unbiased reviews these days. Do
you think Dragon Steel Mods are going to give a bad review for an item when
the item supplier is paying them for to review it? That's why groups like
this are so important. You get to hear first-hand reports from people who
aren't in the pocket of the manufacturer.
--
TTFN,
Shaun. >> Stay informed about: Looking for a power supply recommendation |
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External
Since: Nov 19, 2007
Posts: 170
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(Msg. 9) Posted: Sun Dec 09, 2007 10:00 pm
Post subject: Re: Looking for a power supply recommendation [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Somewhere on teh interweb ~misfit~ typed:
> Somewhere on teh interweb Gilgamesh typed:
>> "kony" <spam DeleteThis @spam.com> wrote in message
>> news:3fmml3p8tlfm5k2ruu4934itu8o2tsagcn@4ax.com...
>
>>> Scythe is best avoided because of their dishonesty. Don't
>>
>> If the only source of information used is company propaganda you
>> deserve what you get.
>> However there are good reviews of the fans out there
>> http://www.dragonsteel.us/index.php?option=com_content&task=view&id=52...Itemid=
>>
>> Why do you say they are dishonest? Simply because you don't believe
>> their claims or do you have other experiences to back this up. I'm
>> not being argumentative, I want to know about past bad practices
>> before making decisions.
>
> If you want to know bad practices look no further than the page you
> just linked.
>
> Specifically where it says:
>
> "Sponsor: _Scythe_"
Sorry, I looked further after I hit send. From the last page of the
advertisment, uhhh, I mean review:
"I would like to thank Scythe for the chance to review the Slip Stream 120mm
Fans and for their CONTINUED SUPPORT of DSM." (My capitals)
Further evidence that the glowing report is just sales pitch framed
differently.
--
TTFN,
Shaun. >> Stay informed about: Looking for a power supply recommendation |
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