This is an Intel D945GCLF mini-ITX board with a 360W power supply, 80GB hard disk and one DDR2 memory module.
Hi
Can you confirm that on this board the cooling is passive for the Atom Proc, and that the hudge cooler with fan, we can see on the picture below, is for the chipset
Seems to be, but i see contrary informations about that in recent news.
An other point, you use a 360W power supply. If your target is to minimize your system overall power eating, you might consider downsize your PSU.
In general, PSU efficiency drops a lot at very low loads. Even if they do better than a few years ago. Nowadays, most of them can sustain over 70% efficiency at 20% Load, but very rare are those who can do better than 50% efficiency under 10% load.
Let's assume your PSU is in a 50% efficiency zone (quite optimistic already), that means your system drains 22W (and by the way the PSU itself dissipate 22W in heat). that would mean the PSU works a 6% of full load (360 vs 22), and 50% efficiency is really optimistic for such a low load (even for better ones like Seasonic S12 series).
So, you might consider chose a very small PSU, let's say 60W/80W range, that should be able to work in it's over 80% efficiency range.
So you should gain 10-15W depending how good your current PSU is a very low loads.
Cheers,
God created a few good looking guys.. and for the rest he put hairs on top..
This is an Intel D945GCLF mini-ITX board with a 360W power supply, 80GB hard disk and one DDR2 memory module.
Can you confirm that on this board the cooling is passive for the Atom Proc, and that the hudge cooler with fan, we can see on the picture below, is for the chipset
Yes, I can. Here is a photo without the heat spreaders.
Quote:
An other point, you use a 360W power supply. If your target is to minimize your system overall power eating, you might consider downsize your PSU.
In general, PSU efficiency drops a lot at very low loads. Even if they do better than a few years ago. Nowadays, most of them can sustain over 70% efficiency at 20% Load, but very rare are those who can do better than 50% efficiency under 10% load.
Let's assume your PSU is in a 50% efficiency zone (quite optimistic already), that means your system drains 22W (and by the way the PSU itself dissipate 22W in heat). that would mean the PSU works a 6% of full load (360 vs 22), and 50% efficiency is really optimistic for such a low load (even for better ones like Seasonic S12 series).
So, you might consider chose a very small PSU, let's say 60W/80W range, that should be able to work in it's over 80% efficiency range.
So you should gain 10-15W depending how good your current PSU is a very low loads.
I bought about 10-12 different (cheap) PSUs some months ago to measure their efficiency. The used Dear 360W PSU wasn't the best but all of these PSUs dissipated less than 15W under 50W total dissipation. So, you are right that a better PSU can dissipate less power, but this PSU raises the cost of the system and saves only some Watts. This money get back only after 10 years. (+30 USD and -2W)
What you need for that board is a PicoPSU 90W. All ATX power supplies have horrible efficiency at low loads. SilentPCReview.com does very in-depth reviews of power supplies - ranging from the PicoPSU to 1KW monsters.
I'm guessing that with the PicoPSU, you'd be able to drop the AC power draw down to the low 30's.
There are two finished WUs for the Atom now: ca 180k sec per WU puts it in the PIII@500MHz league. If you just take the CPU wattage for a credits/Wh comparision, this would still be not too bad, but as a whole system, it's far from impressive.
These are very lucky results, because I can calculate the HT efficiency, that is equal to 2*168057/(198344*19418/19775) = 1,73. So, Atom can produce +73% more credits with HT on App4.26.
Atom is cca. 3 times slower than Core2, clock for clock.
These are very lucky results, because I can calculate the HT efficiency, that is equal to 2*168057/(198344*19418/19775) = 1,73. So, Atom can produce +73% more credits with HT on App4.26.
Atom is cca. 3 times slower than Core2, clock for clock.
That's pretty sad. Your Atom's performance is about the same as that of my Pentium III 450's.
Here's an interesting article about the Atom line, for anyone who's interested.
So, is there a reson at all to use an Atom in a desktop system?
I think Atom fits into only cheap desktop systems and into the low power mobile systems, of course. It's 1-4W power consumption isn't too significant in a 30-50W eating solution, but the performance is relative poor if we take the expectations of the latest softwares into consideration. Probably a faster, but a bit more hungry (10-20W) CPU would be better for this segment.
RE: This is an Intel
)
Hi
Can you confirm that on this board the cooling is passive for the Atom Proc, and that the hudge cooler with fan, we can see on the picture below, is for the chipset
Seems to be, but i see contrary informations about that in recent news.
An other point, you use a 360W power supply. If your target is to minimize your system overall power eating, you might consider downsize your PSU.
In general, PSU efficiency drops a lot at very low loads. Even if they do better than a few years ago. Nowadays, most of them can sustain over 70% efficiency at 20% Load, but very rare are those who can do better than 50% efficiency under 10% load.
Let's assume your PSU is in a 50% efficiency zone (quite optimistic already), that means your system drains 22W (and by the way the PSU itself dissipate 22W in heat). that would mean the PSU works a 6% of full load (360 vs 22), and 50% efficiency is really optimistic for such a low load (even for better ones like Seasonic S12 series).
So, you might consider chose a very small PSU, let's say 60W/80W range, that should be able to work in it's over 80% efficiency range.
So you should gain 10-15W depending how good your current PSU is a very low loads.
Cheers,
God created a few good looking guys.. and for the rest he put hairs on top..
RE: RE: This is an Intel
)
Yes, I can. Here is a photo without the heat spreaders.
I bought about 10-12 different (cheap) PSUs some months ago to measure their efficiency. The used Dear 360W PSU wasn't the best but all of these PSUs dissipated less than 15W under 50W total dissipation. So, you are right that a better PSU can dissipate less power, but this PSU raises the cost of the system and saves only some Watts. This money get back only after 10 years. (+30 USD and -2W)
What you need for that board
)
What you need for that board is a PicoPSU 90W. All ATX power supplies have horrible efficiency at low loads. SilentPCReview.com does very in-depth reviews of power supplies - ranging from the PicoPSU to 1KW monsters.
I'm guessing that with the PicoPSU, you'd be able to drop the AC power draw down to the low 30's.
There are two finished WUs
)
There are two finished WUs for the Atom now: ca 180k sec per WU puts it in the PIII@500MHz league. If you just take the CPU wattage for a credits/Wh comparision, this would still be not too bad, but as a whole system, it's far from impressive.
CU
Bikeman
I copy here the results of
)
I copy here the results of the Atom before they will disappear.
1, HT:ON
Atom@1600MHz/4.26: 198,343.80 sec
Kentsfield@2400MHz/4.38: 19,774.68 sec
2, HT:ON
Atom@1600MHz/4.26: 175,691.00 sec
Conroe@1860MHz/4.26: 39,906.05 sec
3, HT:OFF
Atom@1600MHz/4.26: 168,056.80 sec
Kentsfield@2400MHz/4.38: 19,418.07 sec
These are very lucky results, because I can calculate the HT efficiency, that is equal to 2*168057/(198344*19418/19775) = 1,73. So, Atom can produce +73% more credits with HT on App4.26.
Atom is cca. 3 times slower than Core2, clock for clock.
RE: I copy here the results
)
That's pretty sad. Your Atom's performance is about the same as that of my Pentium III 450's.
Here's an interesting article about the Atom line, for anyone who's interested.
Ups, I wasn't aware that the
)
Ups, I wasn't aware that the Atom can do HT.
So, is there a reson at all to use an Atom in a desktop system??? Maybe in a Terminal Server Client appliance?
BTW: To prevent us from going off topic, I extended the thread title a bit :-)
CU
Bikeman
RE: So, is there a reson at
)
I think Atom fits into only cheap desktop systems and into the low power mobile systems, of course. It's 1-4W power consumption isn't too significant in a 30-50W eating solution, but the performance is relative poor if we take the expectations of the latest softwares into consideration. Probably a faster, but a bit more hungry (10-20W) CPU would be better for this segment.
Isaiah is coming... :-)
RE: That's pretty sad.
)
I'm surprised it's performing so poorly. In most benches I've seen elsewhere it scores about the same as the pentium-m celeron 900 used in an EEE.
I got an old Compaq server
)
I got an old Compaq server running a 1 Ghz P3. Do you think it would be worth running Einstein on it?