Message boards :
Number crunching :
Won't matter much to me.........
Message board moderation
Previous · 1 · 2 · 3 · 4 · Next
Author | Message |
---|---|
Grant (SSSF) Send message Joined: 19 Aug 99 Posts: 13720 Credit: 208,696,464 RAC: 304 |
Ambient air cooling is all I got. What is the Relative Humidity on the hot days? Grant Darwin NT |
juan BFP Send message Joined: 16 Mar 07 Posts: 9786 Credit: 572,710,851 RAC: 3,799 |
In my cases i use 2-4 12" fans (the same used on the big PSU´s) depends on the combination of the GPUs, 2 on the 690 and 4 on the 590. Yes, sorry here we only uses metric system. |
Paul D Harris Send message Joined: 1 Dec 99 Posts: 1122 Credit: 33,600,005 RAC: 0 |
One summer my ac went out and it got 106 in my living room where my cruncher is and it kept on crunching no problem. The way I understand it if my computer uses 300 watts to crunch it is not the same as 300 watts of heat because all the electricity is being used not to produce heat but to crunch with some heat as a by product. Similar to a 100 watt incandescent light bulb produces more heat than 100 watt florescent bulb which produces no heat. They both use 100 watts electricity one produces heat and the other does not. Computes are much the same they do all kinds of stuff but their design is not to produce heat. A 1500 watt computer does not produce as much heat as a 1500 watt space heater. |
kittyman Send message Joined: 9 Jul 00 Posts: 51468 Credit: 1,018,363,574 RAC: 1,004 |
It's getting a tad toasty in here today. I already had 2 rigs shut down to ask me to remove their cooling fans and remove the kitty fur buildup. "Freedom is just Chaos, with better lighting." Alan Dean Foster |
kittyman Send message Joined: 9 Jul 00 Posts: 51468 Credit: 1,018,363,574 RAC: 1,004 |
It's getting a tad toasty in here today. Hello back to the kitties. With 5 of the rascals running about, I am sure you understand a bit about kitty fur. As they say, kitty hair is everywhere. "Freedom is just Chaos, with better lighting." Alan Dean Foster |
Josef W. Segur Send message Joined: 30 Oct 99 Posts: 4504 Credit: 1,414,761 RAC: 0 |
One summer my ac went out and it got 106 in my living room where my cruncher is and it kept on crunching no problem. The way I understand it if my computer uses 300 watts to crunch it is not the same as 300 watts of heat because all the electricity is being used not to produce heat but to crunch with some heat as a by product. Similar to a 100 watt incandescent light bulb produces more heat than 100 watt florescent bulb which produces no heat. They both use 100 watts electricity one produces heat and the other does not. Computes are much the same they do all kinds of stuff but their design is not to produce heat. A 1500 watt computer does not produce as much heat as a 1500 watt space heater. A 100 watt incandescent bulb does produce less light and more local heat than fluorescent lighting which is also drawing 100 watts. But when the light is absorbed by what it's shining on, that converts light energy to heat energy. The thoroughly well established conservation of energy law applies, though if the light goes out a window some of the heat does not raise room temperature. The same law applies to the space heater versus computer comparison. If you actually measure the watts being used by the computer it converts that amount of electrical energy to heat, mostly directly though some indirectly through sound or light. Joe |
betreger Send message Joined: 29 Jun 99 Posts: 11360 Credit: 29,581,041 RAC: 66 |
Ah, another person who believe in the conservation of energy. |
ExchangeMan Send message Joined: 9 Jan 00 Posts: 115 Credit: 157,719,104 RAC: 0 |
One summer my ac went out and it got 106 in my living room where my cruncher is and it kept on crunching no problem. The way I understand it if my computer uses 300 watts to crunch it is not the same as 300 watts of heat because all the electricity is being used not to produce heat but to crunch with some heat as a by product. Similar to a 100 watt incandescent light bulb produces more heat than 100 watt florescent bulb which produces no heat. They both use 100 watts electricity one produces heat and the other does not. Computes are much the same they do all kinds of stuff but their design is not to produce heat. A 1500 watt computer does not produce as much heat as a 1500 watt space heater. This is interesting. So Joe, you're saying that 100% of the power draw from the AC outlet feeding the cruncher is ultimately converted into heat? I always thought that things like motors for cooling fans absorb some of the electric to convert it to motion. Also, a 150 watt CPU would use some of that energy for computation. I realize that these are very small amounts compared to the heat energy dissipated to the ambient air. My big cruncher uses a steady state draw of over 1600 watts. I can tell you that the heat given off is quite substantial and is likely pretty close to that number of watts. |
juan BFP Send message Joined: 16 Mar 07 Posts: 9786 Credit: 572,710,851 RAC: 3,799 |
Not even Creditnew could change the law of energy conservation. No matter how hard it could try. |
kittyman Send message Joined: 9 Jul 00 Posts: 51468 Credit: 1,018,363,574 RAC: 1,004 |
Well, I can assure you that the bits of data I send back to Berkeley are not cooling things off much here.... "Freedom is just Chaos, with better lighting." Alan Dean Foster |
Paul D Harris Send message Joined: 1 Dec 99 Posts: 1122 Credit: 33,600,005 RAC: 0 |
I can not heat my living room with my cruncher but I can with a space heater. A computer does not produce very much heat certainly can not heat a room. I suggest that solar radiation is what is heating your room because the computer did not heat it in the winter and along comes summer and now the room is warm. |
Alinator Send message Joined: 19 Apr 05 Posts: 4178 Credit: 4,647,982 RAC: 0 |
I can not heat my living room with my cruncher but I can with a space heater. A computer does not produce very much heat certainly can not heat a room. I suggest that solar radiation is what is heating your room because the computer did not heat it in the winter and along comes summer and now the room is warm. WHAT!!?? Yes, they most certainly can heat a room, and I can tell you that for a fact! Why do you think datacenters have massive air conditioning systems? |
kittyman Send message Joined: 9 Jul 00 Posts: 51468 Credit: 1,018,363,574 RAC: 1,004 |
I can not heat my living room with my cruncher but I can with a space heater. A computer does not produce very much heat certainly can not heat a room. I suggest that solar radiation is what is heating your room because the computer did not heat it in the winter and along comes summer and now the room is warm. Heck, during the winter months, I can usually heat my whole house with what is generated by my computers. "Freedom is just Chaos, with better lighting." Alan Dean Foster |
Wiggo Send message Joined: 24 Jan 00 Posts: 34744 Credit: 261,360,520 RAC: 489 |
No heat problems here this morning as it's -3C outside. Cheers. |
Alinator Send message Joined: 19 Apr 05 Posts: 4178 Credit: 4,647,982 RAC: 0 |
LOL... Yes you are now in your 'free' air conditioning season. ;-) |
Mark Wyzenbeek Send message Joined: 28 Jun 99 Posts: 134 Credit: 6,203,079 RAC: 0 |
Motors have bearings that get hot from friction. Every computation involves current flowing from transistor to transistor which generates heat The Universe is not only stranger than you imagine, it's stranger than you can imagine. SETI@home classic workunits 1,405 CPU time 57,318 hours |
MOMMY: He is MAKING ME Read His Posts Thoughts and Prayers. GOoD Thoughts and GOoD Prayers. HATERWORLD Vs THOUGHTs and PRAYERs World. It Is a BATTLE ROYALE. Nobody LOVEs Me. Everybody HATEs Me. Why Don't I Go Eat Worms. Tasty Treats are Wormy Meat. Yes Send message Joined: 16 Jun 02 Posts: 6895 Credit: 6,588,977 RAC: 0 |
It's a science of my own that I have perfected over many years. Ug. Me got Science. Heat go Up. Cool go Down. Fan move Air. Ug. Me got Science. Much Like SETI Science. Ug. Bound For IT IT. May we All have a METAMORPHOSIS. REASON. GOoD JUDGEMENT and LOVE and ORDER!!!!! |
kittyman Send message Joined: 9 Jul 00 Posts: 51468 Credit: 1,018,363,574 RAC: 1,004 |
It's a science of my own that I have perfected over many years. Glad you got it figured out...LOL. Let me know when you publish your next paper on thermodynamics. "Freedom is just Chaos, with better lighting." Alan Dean Foster |
bill Send message Joined: 16 Jun 99 Posts: 861 Credit: 29,352,955 RAC: 0 |
I can not heat my living room with my cruncher but I can with a space heater. A computer does not produce very much heat certainly can not heat a room. I suggest that solar radiation is what is heating your room because the computer did not heat it in the winter and along comes summer and now the room is warm. I have a 6 to 8 degree F in my room depending whether or not the computer is off or on dunning S@H, winter or summer. It may be not enough for you to notice, but it all still turns to heat eventually. |
Chilean Send message Joined: 6 Apr 03 Posts: 498 Credit: 3,200,504 RAC: 0 |
One summer my ac went out and it got 106 in my living room where my cruncher is and it kept on crunching no problem. The way I understand it if my computer uses 300 watts to crunch it is not the same as 300 watts of heat because all the electricity is being used not to produce heat but to crunch with some heat as a by product. Similar to a 100 watt incandescent light bulb produces more heat than 100 watt florescent bulb which produces no heat. They both use 100 watts electricity one produces heat and the other does not. Computes are much the same they do all kinds of stuff but their design is not to produce heat. A 1500 watt computer does not produce as much heat as a 1500 watt space heater. Correct me if I'm wrong, but most if not ALL of the electric power used by a PC is converted into heat. It's not the same as an engine turning a certain % of the gas' potential energy into mechanical energy and the rest goes to heat. In CPUs, the mere fact of moving an electron (to compute) produces heat, P = I^2 * R. CPUs use energy to "produce" something logical, not energy based, ergo, all the power it consumes must go somewhere (hint: heat). This boggled my mind the first time I read it, could someone expand on this? |
©2024 University of California
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.