I'm fairly sure that with the exception of a few kitchen appliances (microwave, electric oven/stove, electric kettle), the total, combined power draw of everything in my entire apartment, including the refrigerator, is less than 1500 watts. My computer barely draws 120 from its power supply at full load, 150 from the wall after losses.
The fact that a supply like this even exists makes me sad. I'm not normally one to campaign for the environment, but in this case I'm tempted to. And not only that, but I like my computers quiet. I don't have any problem managing 120 watts of heat, but 1500 would be difficult even with water cooling. That's something I don't think most people realize - when you're using 1500 watts from your power supply, you've got to get rid of that (plus the losses in the supply) much heat. That's at least 1875 watts...an oven only runs around 5000.
I have a quad core processor on the mother board, why can't I get the equivalent on my video card without having to buy a case that can handle two or more video cards? The industry needs to focus on single video card solutions.
In case you did not read the excellentarticles on BT about the 8800/8900 video cards recent and a while ago. Most of the video cards already have way beyond 100 cores on one chip.
"The larger capacitors are a usual 85˚C" This is actualy quite a complex situation. Basicly the hotter a capacitor gets the lower its dieletric breakdown voltage. So if you had a capacitor rated at 50V 85C it would run at above 85C if you ran it at lower than 50V... (so to make meaningfull comments about the capacitors temp ratings you also need to know their maximum terminal PD and rated voltage and have access to their data sheets to see how much headroom there is), Also could you quantify what the ferite cores are? are they just beads around the wires? as they are only a few pennies :P
As for proccesors getting more and more power hungery, it's an inevitable as they shrink die sizes and have more transistors per unit area due to quantum tunneling. Also as clock fequancies increase so does power consumption due to gate capacitance and the brief moment of conduction accross the two tranisstors when a mos logic circuit switches. Clever arcitectures like VIA's that minimise switching and reduce the number of transitors are one way of combating this and better insulatiors like intell's new ones that have been publisised recently also help. But the unerlying problems are not going to go away and eventualy we will reach the performance wall of our current tech.
No ripple measurements :( No decent PSU goes outside of the ATX specs as far as average voltage goes, but some do get dangerously close to the limits for ripple.
Does ripple matter? Well 3.3v ripple tends to kill RAM. HDs are also vulnerable.
Either way 1500W is overkill imho :p Can only think of servers that need it, and there are loads of high power server PSUs already.
Originally Posted by Boogle No ripple measurements :( No decent PSU goes outside of the ATX specs as far as average voltage goes, but some do get dangerously close to the limits for ripple.
Does ripple matter? Well 3.3v ripple tends to kill RAM. HDs are also vulnerable.
Either way 1500W is overkill imho :p Can only think of servers that need it, and there are loads of high power server PSUs already.
No facility to do ripple measurements sorry. If I did have, I would.
Comments 26 to 32 of 32
ReplyThe fact that a supply like this even exists makes me sad. I'm not normally one to campaign for the environment, but in this case I'm tempted to. And not only that, but I like my computers quiet. I don't have any problem managing 120 watts of heat, but 1500 would be difficult even with water cooling. That's something I don't think most people realize - when you're using 1500 watts from your power supply, you've got to get rid of that (plus the losses in the supply) much heat. That's at least 1875 watts...an oven only runs around 5000.
In case you did not read the excellent articles on BT about the 8800/8900 video cards recent and a while ago. Most of the video cards already have way beyond 100 cores on one chip.
As for proccesors getting more and more power hungery, it's an inevitable as they shrink die sizes and have more transistors per unit area due to quantum tunneling. Also as clock fequancies increase so does power consumption due to gate capacitance and the brief moment of conduction accross the two tranisstors when a mos logic circuit switches. Clever arcitectures like VIA's that minimise switching and reduce the number of transitors are one way of combating this and better insulatiors like intell's new ones that have been publisised recently also help. But the unerlying problems are not going to go away and eventualy we will reach the performance wall of our current tech.
Oh aye, but it's a differentiation at the end of the day. It's something someone does that someone else doesn't do.
Does ripple matter? Well 3.3v ripple tends to kill RAM. HDs are also vulnerable.
Either way 1500W is overkill imho :p Can only think of servers that need it, and there are loads of high power server PSUs already.
No facility to do ripple measurements sorry. If I did have, I would.
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