Search the Community

Let's take a look at one method we can use to measure the efficiency of a Graphics Card (GPU) at various Power Limits. With electricity costs soaring globally and the need to reduce heat emissions running Folding@Home can be a delicate balancing act between contributing to a worthwhile cause and keeping your Electricity Bill low and the Temperature in your home at a reasonable level. Modern GPUs, like CPUs, have a power-efficiency curve that is exponential. At the upper end of the curve you get diminishing increases in yields. So our goal is to find the most efficient Power-Level to run a GPU at. We can define Efficiency as the Yield (PPD) at a specific Power Level (W). For convenience we will use kPPD/W as the measurement of Efficiency. What you will need: Folding at Home Advanced Control Harlam's Folding Monitor (HfM.net) (Windows only or using Wine in Linux) nvidia-smi (Bundled with NVidia drivers on Windows and Linux) Excel or Google Sheets An hour or two per GPU. The best way of measuring efficiency in Folding@Home, given the variable yields in differing Work Units (WUs), is to run a GPU at a target Power-Level over a period of several days recording the Aggregate Yield of the GPU and dividing it by the Power-Level to obtain the Efficiency at that Power-Level then adjusting the Power-Level and repeating the measurements. However, a quick indication of a GPUs efficiency can be measured by observing the changes in Yield (PPD) during a single WU as the Power-Limit is adjusted. Frame Time (TPF) is the time required to complete 1/100th of a WU. In this example we will look at a EVGA RTX 2070 Super XC Hybrid (08G-P4-3178-KR) running project 18202 as the WU. First we need to configure HfM.net to calculate it's estimate of Yield (PPD) using the last 3 Frames as the Sampling Window. A larger Sampling Window might provide more accuracy but will take more time to measure. Select Preferences in the Edit Menu in HfM and choose "Last 3 Frames" to Calculate PPD based on and Click OK. Note that TPF appears to be calculated across all Frames so PPD will be a better measurement. Select a GPU to profile taking note of which Slot on which Host it is running. First we need to determine the Minimum and Maximum Power-Levels supported by the GPU. Open a Command Prompt (Windows) or a Terminal Window (Linux) and enter nvidia-smi -q to query the capabilities of the GPUs installed in the system: Power Readings Power Management : Supported Power Draw : 126.81 W Power Limit : 125.00 W Default Power Limit : 215.00 W Enforced Power Limit : 125.00 W Min Power Limit : 125.00 W Max Power Limit : 240.00 W where: Power Limit: Current value Power-Limit is set to Power Draw: Current Power consumed by the GPU Default Power Limit: Min Power Limit: Max Power Limit: Here we see this GPU has a minimum Power of 125W, a Maximum of 240W so we will want to measure the Yields between these two Limits. We will use 25W as the step size and record Yields at: 125, 150, 175, 200, 225 and 240 Watts. Next open the Folding@Home Advanced Control application from the Task Bar. Select the system with the GPU under test click on the "Log" tab to view the log checking the "Filter" option and selecting the appropriate "Slot" from the drop-down list.: Here we can see that this WU Checkpoints every two frames. We want a consistent sampling window with the same number of Checkpoints as the Checkpoint process adds a slight delay reducing the Yield. In this case we choose to record the Yield after an odd percentage has completed every 6th percentage as we want a sampling interval (6 frames) wider than that used for the Yield estimate (3 Frames) but with a consistent number of Checkpoints (3). It is important we measure the actual Power Draw rather than the set Power-Limit as at lower and upper bounds the GPU may have trouble enforcing the Power-Limit. Wait until the WU is 5-10% complete before starting measurements. In our Command Prompt (Windows) or Terminal (Linux) enter: nvidia-smi -i 0 -l 1 --format=csv,noheader --query-gpu=temperature.gpu,power.draw,clocks.gr,fan.speed which will query GPU 0 (-i 0) on this system and display the GPU temperature, Power Draw, Graphics Clock Speed and Fan Speed once a second. While the sampling window for the current set Power-Limit is in progress we will use this to estimate the Power Draw during the sampling window. In the above example with a 125W Power-Limit we see that the GPU appears to be averaging around the set value of 125W. Next we create a spreadsheet to record our values: The first Column is our "Set" Power-limit; the second our Observed Power-Draw; The third the Percentage measurement point; the fourth the TPF in Seconds from HfM; the fifth the Yield from HfM and the 6th the calculated Efficiency (E/B/1000) in kPPD/W. In a second Administrator Command Prompt (Windows) or Terminal (Linux) set the GPU starting with the lowest Power-limit at the end of a Frame. nvidia-smi -i <GPU#> -pl <Min. Power> In this instance I used: nvidia-smi -i 0 -pl 125 Watch the nvidia-smi window during the sampling interval and record the estimate of the Power-Draw. Populate the Command Prompt or Terminal with the next set-point in preparation for when the current sampling window ends. As soon as the current sampling period finishes (watch the Log in Advanced Control) change to the next set-point (nvidia-smi -i <X> -pl <Y>) and record the TPF and PPD estimate from HfM for the previous sampling window. It helps to record the TPF and PPD values a couple of times later in the sampling interval as they should be fairly stable after 3-5 frames have completed and it will give you a good estimate of the final values. As HfM calculates the Yield (PPD) based on the last 3 Frames and our sampling window is 6 Frames you do not have to be super accurate how soon after the Frame Completion you change to the next Set Point. Here are the final values. The values seemed inconsistent after the 175W Set-Point (completed 15:02) so I took measurements adjusting the Power-Limit down from the Maximum for comparison. Perhaps the calculations performed on the WU around this point got more complicated? Here is the smoothed (5-minute average values for PPD and Power) efficiency for this GPU over the initial test run from my Zabbix server for comparison. I then calculated the Average Efficiency over the two measurements for each of the Set-Points: We can then create a scatter graph of the data including a Trend line and display the Confidence or "Fit" of the Trend line (R^2 value): For this WU on this GPU we see the Efficiency is highest at the lowest Power-Limit and gets exponentially worse as the Power-Limit is increased. To put it another way, dropping from 225W, which is close to the 217W Default, to the Minimum 125W Limit we see a 7.53% decrease in PPD for a 44.4% decrease in Power.

Like a lot of people these days, I have a smart phone but only really use it for a few basic apps (emails, banking, probably 1 SM acc, etc) and using it as my main commuincation device. So not necessarily for gaming / expert photography / etc. All these 'extra' new features or 20megapixel cameras aren't really of use for me. I currently have a Samsung S20 5G. However, with all my previous smart phones, I have been set with the mindset to reduce battery usage as much as possible. Here are some things I do that are different from the default settings: (Not sure if some of these ACTUALLY reduce power consumption, just assuming. Feel free to clarify.) -Turn off Wi-Fi when not in use. -Turn off mobile data when not in use. -Turn off location tracking at all times unless using GPS. -Turn off Blue Tooth when not in use. -Turn off NFC when not in use. -Turn off all Samsung smart features. -No screensaver. -Close down all windows before locking phone. -Close down all apps before locking phone. -Keep brightness at 40% or lower. -Keep on Power Saving Mode (Not ULTRA PWM). -Lowered lock and dim-down times. Are there any other things I can do, either within the phone or externally to reduce my battery consumption? (Some things I know that could reduce consumption, but as preference, have not: -Lowered resolution -Added an external battery pack {Heard these can be very carcinogenic } -Reduced CPU speed.)

Hi everyone. I have a problem with my Windows 10 installation. I installed Windows 10 Pro completly from scratch on a new ssd and wanted to use the energy options to have my pc go to standby when I'm not using it for x minutes (30 for now). I also set the display timeout to 10 minutes. The problem is that it just doesn't work. After 10 minutes both my displays (one displayport, one displayport to dvi) turn black and imediately on again. This repeats every 10 minutes. It does not even try to go into standby. My energy plan is balanced and I changed some settings (found in other forums) in the advanced settings, including but not limited to: - hybrid standby: on - timer until activation (don't really know the english name): deactivated powercfg /H on - does not help powercfg /A - shows Standby (S3), Hibernation and hybrid standby as available. powercfg /waketimers - says no activationstimer active powercfg /lastwake - says activationhistory 0 powercfg /energy - output file says 10 errors (every error says it has nothing to do with not activating standby), 4 warnings (pending timerrequests) Windows fast boot is deactivated I installed every driver, yes - even the stupid realtek audio console and network driver - on the MSI support page - except the raid driver. I installed the lasted version of the Nvidia gameready driver I'm posting this because I have no idea and searched hours on the web without any results. I just want my screens to go off after x (10) minutes and my pc to "turn off" (as in standby? The thing you can activate at the start button that is not reboot and shutdown) after y (30) minutes. I have set windows to german so some settings may be called something else. I'm thankful for any help. If anyone needs more information just guide me through it and I will deliver. Thanks so far. My components: Ryzen 7 5800X MSI MAG B550 Tomahawk 32GB Vengeance LPX ddr4 3600MHz Gigabyte rtx 2080 super turbo Windows 10 Pro OS: 2TB PCIe 3x4 SSD Games: 4TB Samsung 870 Evo Peripherals and others: wired usb mouse and keyboard active 8 port usb 3 hub for usb sticks and more passive 3 port usb 2 for keyboard, mouse and wireless keyboard receiver bluetooth usb stick elgato cam link 4k focusrite 2i2 2nd gen with drivers (only audio in, audio out via onboard 3.5mm jack)

Hello LTT Forum, I was wondering if there is any way that I can build low power system, that would be running only VM, containers. I would like to use i5 8600K (Once ZEN 4 will be out, I am planning to buy a new Ryzen, so this processor will not be in use anymore. I have no idea how to make this processor a low power one. I read about underclocking and undervolting but I am afraid of doing this and I would appreciate any help with this. What would be minimal power draw of this system? I would love to see it under 20w, but I have no idea if is this possible. Thank you in advance for the future advices

So first I just realized I had a dead pixel in my laptop (Sagee NP9176), I tried many things from Youtube that didn',t work out. I entered at Control Center from Clevo and I wanted to try a different power profile to try to fix the pixel. The laptop restarted automatically "in a normal way" and now the screen doesn't show anything and it resets automatically every now and then. I REALLY NEED HELP with this. My thesis is inside that machine (I have an online backup luckly but that laptop is very important to me for other stuff). If it doesn't have a normal reppair, how could i hard reset the laptop? (Even if that uninstall the OS)

http://www.abc.net.au/news/2017-03-10/tesla-boss-elon-musk-pledges-to-fix-sas-electricity-woes/8344084?WT.tsrc=Facebook_Organic

Researchers at university of Nebraska-Lincoln may have solved the problem to overheating. Instead of cooling it like everyone else, why not take it their own advantage, and they did just that, by creating a diode. Call the "thermal diode", it gets its power from heat, where it harness it from off by the electronics it releases. Currently the diode can operate of up to 330 degrees Celsius and could potentially work at temps of up to 700 degrss Celsius. The thermal diode could be used for space exploration to research of the Earth's core and many more. It might also one day be used in Thermal Computers, where the diode can harness heat released by the components and turn that back into power for your system. http://vrzone.com/articles/new-diode-allows-computing-high-temperatures/125674.html Detail research article https://www.nature.com/articles/srep44901

What energy is needed for busy living?

closet thing to free energy?

Hi guys, I wondered if there is anyone with knowledge how to use the sometimes up to 70°C heat of the CPU or just the heat that comes out behind the PC to produce electricity. That would be a project which really interests me. Cheers, Alex

DEALS OVER FOR NOW. Hey Everyone! G-FUEL is celebrating Cyber Monday by offering a 40% discount over on their site, which is active only for today. Use offer code "40" at checkout to save that 40%. You can use offer code "LINUS" to save 10% over at G-FUEL. P.S. - I'd personally recommend Blue Ice or Kiwi Strawberry.

I'm trying to upgrade my PC's graphics card to a 2080 Super and 32 gigs of ram but I don't know if I'll need a new power supply. I've seen some ways of finding the consumption but they just aren't that good (mainly the websites that "estimate it"). Is there any way I can test it so I can see if I'll need a new power supply? Maybe some sort of software? Thanks in advance.

I am trying to design a futuristic power grid / power management system and I was not sure where to start off. I want to design a modular system that can grow for increasing load demands. Like I said I am not sure where to start and this is a big task I am trying to accomplish so any and all input would be greatly appreciated, thanks!

Digiconomist have published an article about how much energy is spent computing Bitcoin transactions. There are some interesting comparisons putting the numbers in perspective: They also state that 1 Bitcoin transaction consumes 935 KWh of energy, in comparison 100,000 VISA transactions only consumes 169 KWh. According to https://www.tesla.com/en_GB/modelx the Tesla Model X can drive 351 miles on 100 kWh. Extrapolating from this information, you could drive a whole 3281 miles or 5281 km for the energy consumed by a single Bitcoin transaction. That would equal driving more than the full horizontal width of the USA, or driving the full height of the USA twice. (source) Or from the south point of Portugal to the northern point of Finland. (source) This raises some serious questions regarding sustainability, another topic which they touch upon in the article. Link to article: https://digiconomist.net/bitcoin-energy-consumption

Hey! I'm trying to get a new power supply for my main rig, since the one I currently have is complete trash. Within my budget, here are some I found: Cooler Master Elite V3 500W (MPW-5001-ACABN1-EU) and Cooler Master Elite V3 600W Corsair VS450 Nox Urano VX 650W Aerocool KCAS-600W Seasonic S12II-430 and Seasonic S12II-520 Corsair CX430 Which one should I get? I heard the best reviews from the Seasonic S12II-XXX models on the internet (apparently they're made pretty well). I did hear though that they aren't "Haswell-ready" from a thread when Haswell was new. My specs: i3 4160 (Haswell) 2x8GB RAM DDR3 (they are both different models and companies but work well) GA-H81M-S1 rev 2.1 GTX 950 LC-Power 550W PSU Thank you!

Buy video cards on Amazon: http://geni.us/4TpG1x Does it make ANY sense to harness the heat energy that your PC disperses to replace a purpose-built space heater?

Hello everyone, I live in a country were, the power is a issue. In the company that i work, we have ~ 15 computers and we also have a industrial generator. The problem is, when the power goes off, all the routers, desktop computer, server etc... shutdown and it takes ~ 5sec to the generator to start working. I already got many problems with computers power supply. So i need a opinion of all of you, to tell me which UPS to buy. Some one recomended me to buy this one "APC UPS 1200 BACK PRO". But i want to know from you guys. Sorry for my English, "My main language is Portugues ☺". Please just be cool with me. Obrigado.

I was recently handling a GTX 1060 and while doing that I noticed the black wrapping paper or whatever that stuff is... What can I touch with that black stuff to discharge the energy?

For fun, I’m re-reading Plutonium: A History Of The World’s Most Dangerous Element. By Jeremy Bernstein (Cornell University Press, 2007). I want to confirm a “big idea”... 1. In non-nuclear chemistry (that I teach in the high school science classroom, junior grades), the law of conservation of mass holds true. It’s the basis of balancing chemical reactions. 2. The moment I start bombarding neutrons at nuclei, the above law fails. The Law Of Conservation of Energy then takes over. It follows Einstein’s famous equation E = mc2. Yes? No? Uh... Sincerely, PrometheanCat.

My current computer is in my spoiler. Anyways, my main focus is if switching from Fx 6300 (am3?) to I5 6600(k) skylake would lower my (mom's) energy bill? My second "side question" is if the skylake version is quieter and cooler (less heat) than my current system? Note: I live in Sweden (EU), not in USA.

Technology Submission - State of the Art - Novel InFlow Tech - Featured Project Development; 1-Gearturbine, 2-Imploturbocompressor: *Wordpress Blog State of the Art Novel InFlow Gearturbine Imploturbocompressor * *1-GEARTURBINE PROJECT Rotary-Turbo-InFlow Tech Atypical InFlow Thermodynamic Technology Proposal Submission Novel Fueled Motor Engine Type *1-GEARTURBINE BEHANCE Images Gallery Portafolio Power by bar, for Air, Sea, Land & Generation. Have similar system of the Aeolipile Heron Steam device from Alexandria 10-70 AD. YouTube; * Atypical New • GEARTURBINE / Retrodynamic = DextroRPM VS LevoInFlow + Ying Yang Thrust Way Type - Non Waste Looses This innovative concept consists of hull and core where are held all 8 Steps of the work-flow which make the concept functional. 8 steps (5 of them are dedicated to the turbo stages). *8-X/Y Thermodynamic CYCLE - Way Steps: 1)1-Compression / bigger 2)2-Turbo 1 cold 3)2-Turbo 2 cold 4)2-Combustion - circular motion flames / opposites 5)2-Thrust - single turbo & planetary gears / ying yang 6)2-Turbo 2 hot 7)2-Turbo 1 hot 8)1-Turbine / bigger -With Retrodynamic Dextrogiro vs Levogiro Phenomenon Effect. / Rotor-RPM VS InFlow / front to front; "Collision-Interaction Type" - inflow vs blades-gear-move. Technical unique dynamic innovative motion mode. -Shape-Mass + Rotary-Motion = Inertia-Dynamic / Form-Function Wide [Flat] Cylindrical shape + positive dynamic rotary mass = continue Inertia positive tendency motion. Kinetic Rotating Mass. Tendency of matter to continue to move. Like a Free-Wheel. -Combustion 2Two continue circular [Rockets] flames. [ying yang] opposite one to the other. – With 2TWO very long distance INFLOW [inside propulsion] CONDUITS. -4 TURBOS Rotary Total Thrust-Power Regeneration Power System. -Mechanical direct 2two [Small] Planetary Gears at polar position. -Like the Ying Yang Symbol/Concept. -The Mechanical Gear Power Thrust Point Wide out the Rotor circumference were have much more lever [HIGH Torque] POWER THRUST. -No blade erosion by sand & very low heat target signature profile. -3 points of power thrust; 1-flow way, 2-gear, 3-turbine. *Patent; Dic. 1991 IMPI Mexico #197187 All Rights Reserved. Carlos Barrera. * *·2-IMPLOTURBOCOMPRESSOR; One Moving Part System Excellence Design - The InFlow Interaction comes from Macro-Flow and goes to Micro-Flow by Implossion - Only One Compression Step; Inflow, Compression and outflow at one simple circular dynamic motion Concept. *2-IMPLOTURBOCOMPRESSOR BEHANCE Images Gallery Portafolio *·“Excellence in Design" because is only one moving part. Only one unique compression step. Inflow and out flow at the same one system, This invention by its nature a logic and simple conception in the dynamics flow mechanics area. The invention is a wing made of one piece in a rotating motion, contained in a pair cavity system connected by implocavity, and interacting dynamically with a flow, that passes internally "Imploded" through its simple mechanism. This flow can be gas (air) or liquid (water). And have two different applications, in two different form-function; this one can be received (using the dynamic flow passage, as a receiver). An example cut be, as a Bike needs a chain to work from motor to wheel. And for the Imploturbocompressor application, cut be as; in a circumstance at the engine, as an A-activate flow, and with a a tube flow conduit going to the wheel as a B-receiving-flow the work use. To see a Imploturbocompressor animation, is posible on a simple way, just to check the Hurricane Satellite view, and is the same implo inflow way nature. Making a metaphoric comparison with the intention to expose it more clearly for a better comprehension of this innovative technical detail, it would be similar to the trajectory and motion of a dynamic flow compared with a rope (extended) that passes through the system would have now a knot (without obstructing the flow). Its prudent to mention that the curves and the inclinations of the blades of a rotating wing made of this invention, is conferred by its shape and function a structural rigidity allowing it to conduct and alter appropriately the dynamic flow passing through its system.

I am doing a project to see whether we can make my school sustainable and I was wondering what would be the best food to grow for maximum energy?

Ok so this started like 2 days ago. I recently purchased a BLU Studio Energy 2 off Amazon and now it randomly decides to vibrate without there being any notifications/calls. Sometimes it just does it for like 3 seconds, then sometimes its does it for 15 seconds. Does anyone know what is causing this? It's getting rather annoying. Also, after it vibrates it says "HOME" underneath my cell service. So yeah, any ideas? If so please let me know

So I just purchased an Asus ROG GL552VW-DH71. It has an i7 6700HQ and it uses a Nvidia 960M graphics card. I will go long stretches without using the gaming operations on this laptop and I was wondering if it is possible to temporarily disable the GPU to improve battery life? Are there any tweaks or operations that can be modified to improve battery life if all I am doing is basic MS Word or browsing YouTube? I'm new to the forum so please try not to use words that are too big. Thanks.

Source: http://www.geforce.com/whats-new/articles/nvidia-geforce-gtx-energy Tired of your boring old energy drinks? Need to keep yourself up after avoiding sleep for two days? Just need to boost your performance? Then Nvidea has just what you need! GeForce GTX ENERGY! Made specifically for gamers, this will improve response times, give faster input speed, and give longer gaming sessions! This is probs an April fools thing, but it would be pretty cool. Perfect pair for your Razor toaster!