PC with a very low power consumption?

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Message 387541 - Posted: 3 Aug 2006, 22:14:23 UTC
Last modified: 3 Aug 2006, 22:32:34 UTC

Hello!

I am interest to build a new PC with a very low power consumption (watt).
My present PC: AMD K8 3200+ need around 160 watt.

For example:
AMD Athlon64 X2 3800+ EE 2000MHz 2x512kB 65W Box AM2 F2-Stepping
AMD Athlon64 X2 4200+ EE 2200MHz 2x512kB 65W Box AM2 F2-Stepping
AMD Athlon64 X2 4600+ EE 2400MHz 2x512kB 65W Box AM2 F2-Stepping

they need 65 watt.

Maybe the motherboard and the HDD, fans and so on, need around 40 watt, then the PC need around 100 watt?
This is correct?


I know for S@H it´s good to have an Intel, but have Intel comparable CPUs with low power consumption?

For example the new:
Intel Core 2 Duo (Conroe) E6300 1860MHz 2MB Box
Intel Core 2 Duo (Conroe) E6400 2130MHz 2MB Box
Intel Core 2 Duo (Conroe) E6600 2400MHz 4MB Box

Is this correct that the E6600 have a 4 MB (2x2 MB) Cache and the others 2x1 MB?

The AMD Athlon64 X2 4600+ EE 2400MHz is comparable with the Intel Core 2 Duo (Conroe) E6600 2400MHz?


Or which CPU and Motherboard do you will take for a very low power consumption PC?


Greetings!


EDIT:
Or it´s not the correct translation (power consumption) : Stromverbrauch-> current consumption?
A very low electricity bill at the end of the month! :-)


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Message 387545 - Posted: 3 Aug 2006, 22:17:36 UTC

I gues mi PC uses all of the power it can get...i instald two fans that came from a server...they are huge!
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Message 387567 - Posted: 3 Aug 2006, 22:31:03 UTC - in response to Message 387541.  

Is this correct that the E6600 have a 4 MB (2x2 MB) Cache and the others 2x1 MB?


Actually, all the Core 2 Duo processors have a shared L2 cache which actually helps performance (since they don't have to go across the CPU bus and update each other's L2 cache so as to not duplicate cache writes). They are no longer a split cache per core.


As for the rest that you are asking - I'm not sure how to answer. There's so many factors - you'd just have to look at the wattage requirements. I've never built a low power consumption PC so I have no suggestions. I'm sure someone else will though. 8-)
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Message 387580 - Posted: 3 Aug 2006, 22:43:32 UTC - in response to Message 387541.  
Last modified: 3 Aug 2006, 22:46:27 UTC

I am interest to build a new PC with a very low power consumption (watt).
My present PC: AMD K8 3200+ need around 160 watt.

For example:
AMD Athlon64 X2 3800+ EE 2000MHz 2x512kB 65W Box AM2 F2-Stepping
AMD Athlon64 X2 4200+ EE 2200MHz 2x512kB 65W Box AM2 F2-Stepping
AMD Athlon64 X2 4600+ EE 2400MHz 2x512kB 65W Box AM2 F2-Stepping

they need 65 watt.

Dirk, I "measured" the actual current draw for my systems and you can find that post here
I pay .13?/KWH but used .10 for ease of adjustment to fit your rate, if you pay 20 just double the dollar figures.

here's the basic content:


Now for my own curiosity, I've done the same to all my puters and here's what I found out:

AMD 64 3700 Sandiego, Asus A8N-E mobo, Enermax 450W psu, Asus 6200 PCI express video card, 1M OCZ gold ram, OCed.

With boinc running 1120mA max, 1024 mA min, 1043 mA average (125.16 Watts)
W/O boinc running 888mA max, 704 mA min, 704 mA aversage (84.48 Watts)
This machine costs 1.25 Cents/hour, 30.04 Cents/day, and $9.01/month.

Gateway laptop, AMD 64 3700 754 socket, 1 M ram

With boinc running 1200mA max, 752 mA min, 1157mA avgerage (138.84 Watts)
W/O boinc running 496mA max, 416mA min, 440mA average (52.8 Watts)
This machine costs 1.39 Cents/hour, 33.32 Cents/day, and $9.9965/month.

HP 760n, P4 1.8, 512M ram, crappy Asus board

With boinc running 1680mA max, 1472 mA min, 1597 mA average (191.64 Watts)
W/O boinc running 1016 mA max, 928mA min, 949mA average (113.88 Watts)
This machine costs 1.92 Cents/hour, 45.99 Cents/day, and $13.798/month.

HP 6545c, Celeron 500, 256M ram

With boinc running 688mA max, 640mA min, 672mA average (80.64 Watts)
W/O boinc running 648mA max, 448mA min, 460mA average (55.2 Watts)
This machine costs .8064 Cents/hour, 19.35 Cents/day, and $5.806/month.

conditions
All measurements taken with Fluke 87 multimeter place in series with the power cord to the puter.
All monitors powered seperately.
Measurement sample period 2-3 minutes of record time after allowing some "settle" time after turning off boinc, or after starting boinc.
Each sample repeated and all results similar to those listed, so I went with the higher Max sample on each reported result.
Monthly rate calculated with 30 days/month.
All rates calculated at 10 cents/KWh.
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Message 387590 - Posted: 3 Aug 2006, 22:56:48 UTC - in response to Message 387541.  

Hello!

I am interest to build a new PC with a very low power consumption (watt).
My present PC: AMD K8 3200+ need around 160 watt.

For example:
AMD Athlon64 X2 3800+ EE 2000MHz 2x512kB 65W Box AM2 F2-Stepping
AMD Athlon64 X2 4200+ EE 2200MHz 2x512kB 65W Box AM2 F2-Stepping
AMD Athlon64 X2 4600+ EE 2400MHz 2x512kB 65W Box AM2 F2-Stepping

they need 65 watt.

Maybe the motherboard and the HDD, fans and so on, need around 40 watt, then the PC need around 100 watt?
This is correct?


I know for S@H it´s good to have an Intel, but have Intel comparable CPUs with low power consumption?

For example the new:
Intel Core 2 Duo (Conroe) E6300 1860MHz 2MB Box
Intel Core 2 Duo (Conroe) E6400 2130MHz 2MB Box
Intel Core 2 Duo (Conroe) E6600 2400MHz 4MB Box

Is this correct that the E6600 have a 4 MB (2x2 MB) Cache and the others 2x1 MB?

The AMD Athlon64 X2 4600+ EE 2400MHz is comparable with the Intel Core 2 Duo (Conroe) E6600 2400MHz?


Or which CPU and Motherboard do you will take for a very low power consumption PC?


Greetings!


EDIT:
Or it´s not the correct translation (power consumption) : Stromverbrauch-> current consumption?
A very low electricity bill at the end of the month! :-)



It seems that actually doing this from published specifications is nearly impossible. I've been trying.

I've got a pair of Prescott P4's that I understand are as power hungry as you can get, and I want to replace them with a couple of lower power chips.

You can get the thermal dissipation (which is high, for margins) and you can get the recommended power supply wattage (which takes into account starting current on the most-used "rail") and of course a machine with a 500w power supply may be drawing 120w or less.

Video cards can be a big deal.

The best processor from a power consumption standpoint is a Via C3, but the floating point unit is dismally slow. I use 'em in servers that don't crunch.
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Message 387593 - Posted: 3 Aug 2006, 22:58:09 UTC

I would like to have minimum an AMD Athlon64 X2 3800+ EE 2000MHz. Or comparable Intel.
Then I have around the doubles of an AMD K8 3200+:
Around the same time to finish a WU, but 2 in the same time! :-)


Thanks for answers!
Which the others mean? :-)


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Message 387626 - Posted: 3 Aug 2006, 23:46:43 UTC - in response to Message 387590.  

Hello!

I am interest to build a new PC with a very low power consumption (watt).
My present PC: AMD K8 3200+ need around 160 watt.

For example:
AMD Athlon64 X2 3800+ EE 2000MHz 2x512kB 65W Box AM2 F2-Stepping
AMD Athlon64 X2 4200+ EE 2200MHz 2x512kB 65W Box AM2 F2-Stepping
AMD Athlon64 X2 4600+ EE 2400MHz 2x512kB 65W Box AM2 F2-Stepping

they need 65 watt.

Maybe the motherboard and the HDD, fans and so on, need around 40 watt, then the PC need around 100 watt?
This is correct?


I know for S@H it´s good to have an Intel, but have Intel comparable CPUs with low power consumption?

For example the new:
Intel Core 2 Duo (Conroe) E6300 1860MHz 2MB Box
Intel Core 2 Duo (Conroe) E6400 2130MHz 2MB Box
Intel Core 2 Duo (Conroe) E6600 2400MHz 4MB Box

Is this correct that the E6600 have a 4 MB (2x2 MB) Cache and the others 2x1 MB?

The AMD Athlon64 X2 4600+ EE 2400MHz is comparable with the Intel Core 2 Duo (Conroe) E6600 2400MHz?


Or which CPU and Motherboard do you will take for a very low power consumption PC?


Greetings!


EDIT:
Or it´s not the correct translation (power consumption) : Stromverbrauch-> current consumption?
A very low electricity bill at the end of the month! :-)



It seems that actually doing this from published specifications is nearly impossible. I've been trying.

I've got a pair of Prescott P4's that I understand are as power hungry as you can get, and I want to replace them with a couple of lower power chips.

You can get the thermal dissipation (which is high, for margins) and you can get the recommended power supply wattage (which takes into account starting current on the most-used "rail") and of course a machine with a 500w power supply may be drawing 120w or less.

Video cards can be a big deal.

The best processor from a power consumption standpoint is a Via C3, but the floating point unit is dismally slow. I use 'em in servers that don't crunch.



i have a C3 its to slow to crunch and it get so darn hot to. nice low power. abot 65 Watts max thats what the power suplies says. its a 1.2GHz cpu with a max power of just 25 watts.
on it right now sitting out side VNCing to my AMD X2.

nick


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Message 387730 - Posted: 4 Aug 2006, 1:29:31 UTC
Last modified: 4 Aug 2006, 1:30:05 UTC

See this article at Toms Hardware, Game Over

Or to be really low power try a Core Duo Mobile cpu (Yonah) and one of these mobo from Aopen i945GTm-VHL or i945GTt-VFA

Andy
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Message 387950 - Posted: 4 Aug 2006, 8:12:06 UTC - in response to Message 387541.  

The AMD Athlon64 X2 4600+ EE 2400MHz is comparable with the Intel Core 2 Duo (Conroe) E6600 2400MHz?

Performance wise, the E6600 is actaully more comparable to an FX60, with Seti i'd expect it would outperform any of AMD's current CPUs.
Why? Have a look here.
It's FPU performance is amazing, but it's Integer performance is just mind-boggling.


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Message 387953 - Posted: 4 Aug 2006, 8:18:25 UTC - in response to Message 387590.  

I've got a pair of Prescott P4's that I understand are as power hungry as you can get, and I want to replace them with a couple of lower power chips.

For a given model, the Core 2 Duos have twice the performance & use half the power of the equivalent P4.

I personally never buy 1st generation. I always wait until the 2nd or 3rd stepping of the CPU, and 2nd revision of a motherboard/chipset & a few BIOS updates later.
But i am seriously considering buying an E6600 system as soon as i can get my hands on one.
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Message 388184 - Posted: 4 Aug 2006, 13:53:06 UTC - in response to Message 387730.  
Last modified: 4 Aug 2006, 14:07:54 UTC

See this article at Toms Hardware, Game Over

Or to be really low power try a Core Duo Mobile cpu (Yonah) and one of these mobo from Aopen i945GTm-VHL or i945GTt-VFA

Andy



Hello!

Thanks to all for the time and answers.

Now I´m interest to an Intel Core Duo Processor T2500 @ 2000MHz ... because when an Intel Core 2 Duo model PC need around 220 W...

Who have a T2500 here at S@H (which motherboard and RAM and of course how much watt need your PC) ...?
Then I can look to the performance! :-)


Greetings!



PS. I found Gigabyte and Asus Motherboards too, of course... :-)
Which have the lowest power consumption of all manufacturer?


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Message 388320 - Posted: 4 Aug 2006, 16:50:27 UTC - in response to Message 388184.  
Last modified: 4 Aug 2006, 16:55:30 UTC


Now I´m interest to an Intel Core Duo Processor T2500 @ 2000MHz ... because when an Intel Core 2 Duo model PC need around 220 W...

Who have a T2500 here at S@H (which motherboard and RAM and of course how much watt need your PC) ...?
Then I can look to the performance! :-)


Greetings!



PS. I found Gigabyte and Asus Motherboards too, of course... :-)
Which have the lowest power consumption of all manufacturer?



Hi Dirk, I have a couple of T2400 CPUs running, OC'ed slightly to 2GHz.
Power consumption from mains, measured with a power checker, is slightly below 75W.

I'm using Asus "N4L-VM DH" mainboards with onboard graphics, and small HDs (about 2 GB).

I'm using AOpen H340A micro-ATX cases with builtin 200W power supply.
They seem to be pretty efficient and are dirt cheap. (44 EUR at www.Mix-Computer.de)


Regards Hans


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Message 388330 - Posted: 4 Aug 2006, 16:59:53 UTC - in response to Message 388184.  

Hello!

Thanks to all for the time and answers.

Now I´m interest to an Intel Core Duo Processor T2500 @ 2000MHz ... because when an Intel Core 2 Duo model PC need around 220 W...

Who have a T2500 here at S@H (which motherboard and RAM and of course how much watt need your PC) ...?
Then I can look to the performance! :-)


Greetings!



PS. I found Gigabyte and Asus Motherboards too, of course... :-)
Which have the lowest power consumption of all manufacturer?



This Mobile on Desktop Guide at the Intel site might be of interest for motherboard selection

Andy
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Message 388486 - Posted: 4 Aug 2006, 20:04:02 UTC - in response to Message 388320.  
Last modified: 4 Aug 2006, 20:48:31 UTC


Hi Dirk, I have a couple of T2400 CPUs running, OC'ed slightly to 2GHz.
Power consumption from mains, measured with a power checker, is slightly below 75W.

I'm using Asus "N4L-VM DH" mainboards with onboard graphics, and small HDs (about 2 GB).

I'm using AOpen H340A micro-ATX cases with builtin 200W power supply.
They seem to be pretty efficient and are dirt cheap. (44 EUR at www.Mix-Computer.de)


Regards Hans





Hello Hans,

thanks for your support!

Which RAMs do you use on the Asus Motherboard?
You can take a graphic card too on the Asus motherboard?
Graphic on board: no reduction of performance? Because then the "normal" RAMs will taken...(but lower power consumption, or?)


Your T2400 @ ~2.0GHz:
WU true angle range is : 0.4330
CPU time 11355.04877
Linux optimized S@H Enhanced application by Crunch3r Version info: Linux x86_64 SSE3 64 bit V5.12 by Crunch3r

My K8 3200+:
WU true angle range is : 0.4319
CPU time 14025.34375
Windows optimized S@H Enhanced application by Crunch3r Version info: Windows SSE2 V5.12 by Crunch3r

So around 2670,29 seconds (45 min.) faster your T2400 than the K8 3200+ for this comparables WUs...
To forget not, the T2400 is a Core Duo Processor!


Greetings!


PS. I had heard that the SSE2 is faster than the SSE3, or?
Is this only with Windows or with AMDs?


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Message 388487 - Posted: 4 Aug 2006, 20:06:17 UTC - in response to Message 388330.  



This Mobile on Desktop Guide at the Intel site might be of interest for motherboard selection

Andy




Hello Andy,

thanks for your support!

A very interesting side!

Greetings!



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Message 388496 - Posted: 4 Aug 2006, 20:17:02 UTC

Dirk,
I knew my way around Intel site as I built Pent M 1.86GHz on Aopen mobo over a year ago, in Sonata case and it absolutely silent. Fitted with 6600GT graphics crd and uses less than 90 watts when crunching. Does ar=0.42xxx in about 10,500sec. Only single core, the duo were not out then.

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Message 388504 - Posted: 4 Aug 2006, 20:25:52 UTC - in response to Message 388496.  
Last modified: 4 Aug 2006, 20:27:41 UTC

Dirk,
I knew my way around Intel site as I built Pent M 1.86GHz on Aopen mobo over a year ago, in Sonata case and it absolutely silent. Fitted with 6600GT graphics crd and uses less than 90 watts when crunching. Does ar=0.42xxx in about 10,500sec. Only single core, the duo were not out then.

Andy


Hello Andy,

thanks again!

I must think about to buy the T2500...
My K8 3200+ need 160 W and the T2500 (Core Duo) need 75 W (said Hans)...
When I have around 550,- EUR (CPU, Motherboard, RAMs)... then O.K. :-)

Greetings!


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Message 388508 - Posted: 4 Aug 2006, 20:35:13 UTC - in response to Message 387953.  

I've got a pair of Prescott P4's that I understand are as power hungry as you can get, and I want to replace them with a couple of lower power chips.

For a given model, the Core 2 Duos have twice the performance & use half the power of the equivalent P4.

I personally never buy 1st generation. I always wait until the 2nd or 3rd stepping of the CPU, and 2nd revision of a motherboard/chipset & a few BIOS updates later.
But i am seriously considering buying an E6600 system as soon as i can get my hands on one.

In this case, it was an emergency -- and the Prescott's weren't exactly new then either.

I was replacing a system that required ISA slots, and I found a suitable industrial motherboard -- socket 472.

I'd like to replace the Prescotts with something cooler, lower power consumption, but at the time I had to get the systems up, and I used what I could get my hands on.
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Message 388511 - Posted: 4 Aug 2006, 20:42:11 UTC - in response to Message 388508.  

I was replacing a system that required ISA slots, and I found a suitable industrial motherboard -- socket 472.


[Nitpick]*cought* Socket 478 *cough*[/nitpick] 8-)

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Message 388513 - Posted: 4 Aug 2006, 20:50:14 UTC - in response to Message 388511.  

I was replacing a system that required ISA slots, and I found a suitable industrial motherboard -- socket 472.


[Nitpick]*cought* Socket 478 *cough*[/nitpick] 8-)

Okay, socket 47x where "x" is defined as the correct value between 0 and 9.

I expected the comments to be about ISA slots.
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