Typical mains power for mid-range PC? - Page 3

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Re: Typical mains power for mid-range PC?

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Never ever could bullshit its way out of a wet paper bag.

I showed where you can get a decent list
of power consumption for hard drives, fuckwit.

Re: Typical mains power for mid-range PC?

Rod Speed wrote:
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Continue digging your hole

Re: Typical mains power for mid-range PC?

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Never ever could bullshit its way out of a wet paper bag.

Re: Typical mains power for mid-range PC?

"Rod Speed" <rod.speed.aaa gmail.com> wrote:

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And you are Crocodile Dundee on the Internet?

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Everyone shrieks "troll" at you.

If you weren't so repetitive, you might be entertaining. But then
you would be intelligent enough to at least realize you are a troll.

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newsfe1-gui.ntli.net> <e9r9sm$jjk$1 cache.uni-koblenz.de> <4icu0tF39bmfU1
individual.net> <STbwg.38082$1g.25247 newsfe1-win.ntli.net> <4id5rfF37s96U1
individual.net> <Qoewg.51400$ST2.40253 newsfe5-win.ntli.net> <4idh8hF370ceU1
individual.net> <bUpwg.14114$u%3.3230 newsfe1-gui.ntli.net>
<Xns98088EF1DD79A0123456789> <4ifda1F3k65eU1 individual.net>
<44C28156.D526DB77 stop-spam-sizefitter.com>
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Re: Typical mains power for mid-range PC?

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No need to ask if you are a terminal fuckwit, that stands out like dogs balls.

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Lying, as always. Plenty dont.

<reams of your puerile shit any 2 year old could leave for dead flushed where it

Re: Typical mains power for mid-range PC?


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It'll be close enough to what you already have, maybe 10W
more on average.

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Depends on what you buy.  Averaging Intel's entire line of
CPUs including Core 2 Duo, it'll be close enough to the AMD

Intel's newest CPUs use less power but then their chipsets
use more, and then they want to focus on performance per
watt instead of watt per system.  Nobody buys 1.3 systems so
it has to be performance per system if the important factor
is how much power a small number of systems uses.

In short, ignore power usage on normal (equivalently
equipped) desktops, if power usage is that important then
neither choice is suitable.

Re: Typical mains power for mid-range PC?

Jon D wrote:

"  How much mains power does a modern systen unit need?  "


"  My existing PC (socket-A 462-pin cpu with 768 MB SD-RAM) uses about
180 Watts at 240 volts of which about 65 or 70 Watts is to power my CRT.
  Printers and scanners would be extra.  "

The CRT, printer and scanner should have their own power units
independent of the PC's PSU.

Make a list of everything that isn't powered by the PC's PSU.  Find the
specs on the manufacturer's websites and add them to the total wattage
you need for the PC PSU (see aforementioned link to calculator).  Work
out the total wattage, divide by 1000, then times by 0.0633 (averagely
high cost of electricity) .  That will tell you the approximate maximum
costs to run your PC each hour (in ús).

By that logic, a total of 470W would cost less than 3 pence per hour  (
(470 / 1000) * 0.0633 = 0.029751)

Cost of electricity:  http://www.ukenergy.co.uk/pages/calculation.html


Bear in mind that, in reality, the cost will be considerably less than
that, as much of the setup would not be running constantly and under duress.

"  Modern cpu's seem to be quite power hungry.  "

Yes and no.  It depends how you look at the argument.  They have more
capabilities than previous generations of CPUs, but big steps have been
made in nanometre architecture.  From the dawn of the Athlon XP the
process has gone from 180nm to 130nm to 90nm and now towards 65nm.

If you were to re-encode the same 2 hour video on both an Athlon XP and
an Athlon 64 X2 you would find that the Athlon 64 X2 would be using more
power, but it would also do the task considerably faster.  If a system
uses twice the power, but does the task in half the time, what's the
difference?  You would only end up using more power by using your PC
more (which often becomes the case)

Modern systems can use considerably more power for games because the
graphics cards and CPUs can output more frames per second (FPS).  If
everyone set their systems to limit the FPS they would find their power
usage to be lower.  However, most people don't do this, allowing their
systems to use as much power and capability as their components will
give them.

DDR2 actually uses less power than DDR(1), but yet operates at higher

Another area of power consumption has been the rise in spindle speed for
hard drives.  The rise from 5400rpm to 7200rpm has been a large factor
in power increases, and many people even have 10,000rpm hard drives in
their desktop systems now.  However, as with other components, steps
have been made to limit the power used by read/write operations.

One other big factor is the move towards Active PFC (Power Factor
Correction) in PSUs.  http://www.endpcnoise.com/cgi-bin/e/pfc.html

"  Approx how much mains power is likely to be needed for a modern
mid-range AMD-based PC?  I don't know the existing AMD processors but
something average to middling is what I mean.  "

Mid-range means different things to different people.  CPU speeds often
dictate how "modern" a PC is, but everyone has different requirements in
their RAM requirements, graphics card usage/capabilities and the
size/number of hard drives they wish to use.  Everyone also has
different amounts of add-on equipment and other stuff.

"  Would a sysem based on an Intel cpu need less power?  "

Not necessarily.  Intel came under some criticism because their 90nm
desktop Prescott CPUs used more power than the equivalent AMD CPUs which
were still at 130nm.  However, Intel have had more success recently with
65nm, and it's not like all Intel CPUs use more power than all AMD CPUs.

If you're that worried about power consumption you could opt for a 35W
Athlon 64 X2 3800+.

You'll find that article quite interesting where it states the total
power output under load as being 82W, but don't think for a minute that
you only need use a 100W PSU.  In the review above they use a 500W
CoolerMaster iGreen.

With the following components you could have a gaming PC that will
certainly last for a couple of years (or even longer), and which uses a
little less power than the comparable systems:

- AMD Athlon 64 X2 3800+ 35W AM2 ADD3800IAA5CU
   (see previous review)
- Asus M2N32-SLI Deluxe motherboard
   (just because it's currently the best AM2 motherboard)
- Corsair XMS2 2x1GB DDR2-800 TWIN2X2048-6400
   (1.9v operating voltage is low for DDR2-800)
- Nvidia GeForce 7900GT 256MB
   (hits a sweet spot with power/performance
http://www.vr-zone.com/?i=3335&s=8 )
- Seagate Barracuda 7200.10 320GB ST3320620AS
   (lots of storage, sweet spot in price, reliable, 5 year warranty)
- CoolerMaster iGreen 430W RS-430-ASAA
   (see aforementioned link to CoolerMaster website)

...and just as important, add an LCD TFT monitor.

Re: Typical mains power for mid-range PC?

Jon D wrote:
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Numbers culled from many years of review-analysis:

            idle    load
AXP 2800+ (Barton)    45W    70W
A64 3000+ (130nm)    20W    60W
A64 3200+ (90nm)    10W    30W
A64 X2 3800+        <20W    50W

These figures are for the CPU itself, quoted without CnQ, which roughly
halves idle power. Note that ATX PSUs are usually inefficient at <100W
power draw, so as much as 30-50% of mains power may be wasted in the PSU.

As for Intel, Prescott-based CPUs use much more power per core at both
idle and load. The new Conroe cores appear to use more power at idle but
less at full load than the X2s. SOI does still appear to have an idle
power advantage.

You can get a whole Sempron-based VIA IGP system box into less than 60W
idle mains draw. Less than that is difficult because of PSU
inefficiency. If you add an nForce4 chipset and a decent video card,
mains idle power consumption will approach 100W.

John Jordan

Re: Typical mains power for mid-range PC?

Jon D wrote:
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My setup at 50% CPU load and HD read/write pulls ~245 Watts (as reported
by my UPS).  System specs below.

-Abit AV8
-AMD64 X2 3800+ (overclocked but stock voltage)
-512 MB of PC3200
-3 IDE HDs + 1 USB External
-Idle DVD-R
-17" CRT
-80mm System fan
-GeForce3 Ti200 AGP (active cooling)
-Antec 420W PSU

*Other Items pilling power from same UPS
-Cable Modem & Wireless Router
-HP All-in-One (idle)
-2.1 Speaker system (idle)

Based on these numbers, I would assume that my actual PC pulls ~200
watts or slightly less.  Its not a gaming rig, but the most likely
upgrades (more RAM and newer AGP card) would likely add less than 50 Watts.

While a quality power supply of the proper wattage is very important, I
would venture that most users need less than 300 Watts and very few
require more than 400.  Keep in mind that I've no experience with more
modern/power hungry video cards.

-Dylan C

Re: Typical mains power for mid-range PC?

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You have these measuring devices, like the Voltcraft Energy check
3000,  you put between the wall outlet and the mains plug. That way
you can measure the real used power.
Take out a HD, and see the difference...take out some memory and see
the difference.
has a lot of data.
This voltcraft is a neat thing...

Re: Typical mains power for mid-range PC?

On 25 Jul 2006, Osiris<> wrote:

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Nice web page.

Re: Typical mains power for mid-range PC?

http://www.jscustompcs.com/power_supply /

Jon D wrote:
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Re: Typical mains power for mid-range PC?

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 Didn't run it (the calc), but did read the page.

  Our supplies had 100% proper continuous load ratings.

  We would never make a supply operation declaration label that
declared peak wattage, unless the supply was custom, like an ionizer
supply or such.

  Our LVDC supplies were a rated rail at a given wattage with a
voltage variance (regulation) of a declared amount, and a ripple of a
declared amount at that full load (ripple spec).

  It doesn't get much simpler, but reminds me of the false
declarations made by car stereo folks in the 70's.  You get what you
pay for, and you have to research what you buy.

  Life is simple.  We build things for our use.  One must not
over-complicate the techno devices in life.  Go with the flow.

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