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Number crunching :
How much power!
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S@NL - Eesger - www.knoop.nl Send message Joined: 7 Oct 01 Posts: 385 Credit: 50,200,038 RAC: 0 |
My understanding of PSU's is that the PSU is capable of the burden of the wattage its rated at. It doesn't use 1200W if your system only requires 400W. I've upgraded my PSU without seeing massive increases in power usage because the PC doesnt use that much more Wattage than the previous CPu/GPU/Mobo etc that I installed. To my knowledge the PSU does indeed not consume more energy then required by the system. Also it can deliver 100% of the rated wattage (and probably a bit more too). But continuous usage should not be more then 80% of the rated wattage (mostly because of efficiency and the lifetime of your PSU). The SETI@Home Gauntlet 2012 april 16 - 30| info / chat | STATS |
Paul D Harris Send message Joined: 1 Dec 99 Posts: 1122 Credit: 33,600,005 RAC: 0 |
Hard to say, you'd have to measure it with a Kill-A-Watt. Battlecruisers right on joker! |
Paul D Harris Send message Joined: 1 Dec 99 Posts: 1122 Credit: 33,600,005 RAC: 0 |
Hard to say, you'd have to measure it with a Kill-A-Watt. More like dreadnaughts. |
Cosmic_Ocean Send message Joined: 23 Dec 00 Posts: 3027 Credit: 13,516,867 RAC: 13 |
Since this is kind of related.. I made my own kill-a-watt today and got 535 watts of total draw from my entire desk. mobo: asus kfn5-d sli cpu: 2x opteron 2222 SE (119w) ram: 4x 1gb ddr2-667 GPU: 8800GT hdds: 10 (various sizes..80-1tb) display: 17" CRT sound: 200-watt 2.2 channel shelf stereo system I was actually surprised it was only 535 watts. I figured out from last month's power bill that my current rate is US$0.09211/kWh, so by extrapolation, my desk costs US$31.02/mo. Linux laptop: record uptime: 1511d 20h 19m (ended due to the power brick giving-up) |
1mp0£173 Send message Joined: 3 Apr 99 Posts: 8423 Credit: 356,897 RAC: 0 |
Since this is kind of related.. I made my own kill-a-watt today and got 535 watts of total draw from my entire desk. How are you measuring the phase difference between current and voltage? |
zoom3+1=4 Send message Joined: 30 Nov 03 Posts: 65709 Credit: 55,293,173 RAC: 49 |
Hard to say, you'd have to measure it with a Kill-A-Watt. The oldest remaining dreadnought, USS Texas, was launched in 1912 and is now a museum ship. As to Super Battleships, I know of only one, Marks Frozen Nehi, His is truly Super(Brute Force). The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's |
Cosmic_Ocean Send message Joined: 23 Dec 00 Posts: 3027 Credit: 13,516,867 RAC: 13 |
Since this is kind of related.. I made my own kill-a-watt today and got 535 watts of total draw from my entire desk. Well I chopped the good end of a bad extension cord off, grabbed a duplex receptacle and a spare single-gang electrical box, and clamp this around the black wire. Reads 4.45 amps. Change the meter over to VAC and stick the leads in both slots, and got 120.1. Volts * amps(current) = watts.. 120.1 * 4.45 = ~535 watts. It's not pretty, and not exactly safe, but I'm used to working with live AC voltage, so it was fine for me. Linux laptop: record uptime: 1511d 20h 19m (ended due to the power brick giving-up) |
jim little Send message Joined: 3 Apr 99 Posts: 112 Credit: 915,934 RAC: 0 |
Regarding the phase difference in AC circuits! My Mac Pro tower has current and voltage with less than 1% phase difference. That means that volts time current gives true power. About same to the power phase into the lap top. Big one has a dozen fans and dual large disk drives. And there are several drives that can be plugged in for external storage or moving big data sets around. I might even have more storage than I need! Learned about AC power measurement way back when taking physics in the fifties. duke |
Josef W. Segur Send message Joined: 30 Oct 99 Posts: 4504 Credit: 1,414,761 RAC: 0 |
Since this is kind of related.. I made my own kill-a-watt today and got 535 watts of total draw from my entire desk. These days, the way to get a decent watt reading cheaply is to sample voltage and current simultaneously at a fairly high rate and compute the power from the set of readings. That allows for distinctly non-sinusoidal current waveforms where a simple phase difference reading is inadequate. IIRC the kill-a-watt takes around 1000 samples/second, plenty for the few digits of precision it displays. Cosmic_Ocean's reading is of course VA rather than watts, but that's OK for an approximation since watts are always less than VA for anything other than a purely resistive load. Joe |
1mp0£173 Send message Joined: 3 Apr 99 Posts: 8423 Credit: 356,897 RAC: 0 |
Since this is kind of related.. I made my own kill-a-watt today and got 535 watts of total draw from my entire desk. Part of my question to Cosmic_Ocean was to ask if/how he was taking power factor into account. Fast sampling seems like a pretty easy way, given all the different readings a Kill-A-Watt will return. The other reason I asked: none of my power supplies have "good" power factors. In other words, they all cost less to run than the VA rating would suggest. |
Cosmic_Ocean Send message Joined: 23 Dec 00 Posts: 3027 Credit: 13,516,867 RAC: 13 |
Alright, I did some homework (thanks to google..) and have determined that without specific equipment, an accurate measurement is not possible, however, I still believe I am within 10% of 535 watts. Linux laptop: record uptime: 1511d 20h 19m (ended due to the power brick giving-up) |
Timcom99 Send message Joined: 30 Sep 04 Posts: 105 Credit: 8,927,290 RAC: 0 |
I think only the Alaska and Guam were Completed. A little bit over 30,000 Tones and 33 Knot Speed. The 12 Inch Guns were designed to counter German Pocket Battleships which had 11 Inch Guns. The Deutschland class Pocket Battleships were really just Heavy Cruisers (16,000 Tones) but with Small Battleship sized guns. Full Sized Battleships at the time had 14 to 16 Inch Guns. Light Cruisers of the time had 6 Inch and Heavy Cruisers had 8 Inch Guns. The Alaska class (American Pocket Battleships) were the size of World War 1 Battleships. They had thick enough armor that only a Full Sized Battleship could hurt them badly. Some called them Cruiser Destroyers. |
zoom3+1=4 Send message Joined: 30 Nov 03 Posts: 65709 Credit: 55,293,173 RAC: 49 |
I think only the Alaska and Guam were Completed. A little bit over 30,000 Tones and 33 Knot Speed. The 12 Inch Guns were designed to counter German Pocket Battleships which had 11 Inch Guns. The Deutschland class Pocket Battleships were really just Heavy Cruisers (16,000 Tones) but with Small Battleship sized guns. Full Sized Battleships at the time had 14 to 16 Inch Guns. Light Cruisers of the time had 6 Inch and Heavy Cruisers had 8 Inch Guns. The Alaska class (American Pocket Battleships) were the size of World War 1 Battleships. They had thick enough armor that only a Full Sized Battleship could hurt them badly. Some called them Cruiser Destroyers. You're part right and part not so right. Also they had no Torpedo protection what so ever and Yes You are right Only the Alaska and the Guam were completed to 100%, Whereas the Hawaii was only 84% complete when scrapped. Alaska Class cruiser Wiki wrote:
Hawaii fitting out prior to the suspension of her construction in February 1947. The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's |
FalconFly Send message Joined: 5 Oct 99 Posts: 394 Credit: 18,053,892 RAC: 0 |
Do you think this will cost me monthly. It has a 1600 Watt PSU. Going to have seti Running 24/7 As soon as i get my GPU'S Cooled down. Unless you plan to add 2 or 3 more GTX295 to the setup, the PSU is absolute overkill (?) |
zoom3+1=4 Send message Joined: 30 Nov 03 Posts: 65709 Credit: 55,293,173 RAC: 49 |
Do you think this will cost me monthly. It has a 1600 Watt PSU. Going to have seti Running 24/7 As soon as i get my GPU'S Cooled down. Yeah, From what I've read the 1050w psu I have has powered 4 GTX295 cards on an AMD motherboard, I saw that I think at bit-tech, But I did find another thread Here that mentions running four GTX295 video cards in one case and hacking a 178.13 driver and If done correctly, It works, Of course their using 2 psus and a custom case, So far I don't see any mention of the HAF 932 case of course. The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's |
zoom3+1=4 Send message Joined: 30 Nov 03 Posts: 65709 Credit: 55,293,173 RAC: 49 |
Ok I'm Baaaaaaack and crunchin like a possessed Joker! Super isn't It? I uninstalled the 850w psu and slowly installed the 1050w psu in the Coolermaster HAF 932 case, It went pretty smoothly for the most part, But there was one small problem, The Fan grill on the Enermax Revolution 85+ 1050w psu had to be removed as with the grill on the psu was forced higher in the case and so the 2 sets of screw holes would not line up at all, Remove the fan grill and all the holes line up and since the psu is facing down towards the bottom of the case this is not a real problem, Enermax could have recessed the fan grill better to work in cases like the HAF 932, But this does not matter to Me. Oh and the BFG GTX 295 is crunching on all cylinders as is the iQ9300 quad core cpu, So My RAC should start going back up soon enough. Oh and I have some Good News and Bad News, 1. Good, 2. Bad. 1. The 1050w psu has enough cables for 3 more GTX295 cards. 2. The HAF 932 case will not allow more than 3 GTX295 or any more than 3 of any type of GTX 200 or newer series video cards in the case as the case follows ATX standards and has only 7 backplane slots. :( The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's |
zoom3+1=4 Send message Joined: 30 Nov 03 Posts: 65709 Credit: 55,293,173 RAC: 49 |
Oh and one more bad thing about the Enermax Revolution 85+ 1050w psu, The Molex connectors were hard to get to plugin to any of the drives that I have, The OCZ Molex connectors are better as they just push on, Whereas with the Enermax I had to fiddle with them somewhat. The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's |
Titan Send message Joined: 2 Jul 06 Posts: 51 Credit: 216,207 RAC: 0 |
not too much, 500 watts for the GPUs "yes both of them", and 140 watts for the cpu, and an additional 100 watts for the rest. |
zoom3+1=4 Send message Joined: 30 Nov 03 Posts: 65709 Credit: 55,293,173 RAC: 49 |
Of course too late I found a case that will hold 4 GTX295 cards, It's made by Thermaltake and It's Here. It has 10 card slots instead of 7 like most cases have. Here's a review of the case at ThinkComputers of the Thermaltake ARMOR+ VH6000BWS Full Tower Case. And this BigBruin review says the VH6000BWS has foam air filters and shows them too. The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's |
Cosmic_Ocean Send message Joined: 23 Dec 00 Posts: 3027 Credit: 13,516,867 RAC: 13 |
I am a big fan of the Armor's. I have a VA8000BWS. Kind of mad that I made my purchase decision before seeing the 8003 though. It was $20 more at the time. Linux laptop: record uptime: 1511d 20h 19m (ended due to the power brick giving-up) |
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