Estimating max wattage


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What is the max wattage of the R7 240?

I have been looking around the web for hours now with no avail to my question. I have found the minimal power supply wattage requirement, ranging from 400w-450w depending on the website. But what I am dying to know is the max wattage of the "R7-250A-CHFV". I have a 420watt thermaltake psu and ...

Automatic change of maximum value...

Hello There's probably a simple answer to this so am hoping someone can assist! Basically, I have made a bar chart of a simple table I have. The table shows Number of Units sold. At present, only 200 units have been sold, but I am estimating that this figure could go up to 10,000, so ...

Need help estimating shipping costs on GPU

Hey guys, someone recently bought two 560's from me for $60 and I need to ship them (domestic shipping) and was wondering if anyone had any experience on how much shipping would cost for 2 GPUs? '); }

HP 700-210 upgrade.

I want to upgrade my power...

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hey whats sup youtube so this video is goign to show you how NOT TO get Screwed over in car audio. This aims more towards the new comers. have you ever gone to a

audio shop or hung around your friends and hear people brag or try to sell you a pair of 4000 watt max pyle subwoofer that is hooked up to a 10000

max watt sony amp? Well listen up you been tricked see the key words to stray away from in car audio Is MAX..Something you DO NOT EVER want to

look for because usually you will NOt get anything near that. insteat look for RMS(which means ROOT by Square) To break it down simple and clean

Rms is what the true power rating is able to push at a constant flow unlike max which only occurs on musical peak. Ok Look at this Birthsheet of a Sony

Xplod i got here. Would you buy this speaker? WHAT THE... 1000 WATT subwoofer with a sticker on the sub confirming this is indeed a wattage whore dam this subs mean buisiness .

what a steal WRONG see This...

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A VO2 max test involves intense physical exertion. Before undertaking any test of physical exertion, consider if the test would be safe for you to perform by completing a physical readiness questionnaire.

If you answer ‘yes’ to any of the included questions, consult your doctor before undergoing physical performance testing. You can estimate your VO2 max without undergoing testing using this method.

Estimating VO2 max using a watt bike

The easiest way to estimate your VO2 max using a watt bike is the Sub-maximal ramp test

This is a pre-programmed test involving cycling at an escalating intensity until you reach peak oxygen consumption. Just select sub-maximal ramp from the menu to get started. Full instructions are available here:

Once you complete the test, the watt bike display will show your calculated VO2 max based on your...

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Hey everyone,

I am building my first PC, and have the following parts:

CPU: Intel Core i5-4690K 3.5GHz Quad-Core Processor Motherboard: ASRock B85M-ITX Mini ITX LGA1150 Motherboard Memory: Team Elite Plus 16GB (2 x 8GB) DDR3-1600 Memory
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive Video Card: PowerColor Radeon R9 290 4GB PCS+ Video Card
Case: Silverstone RVZ01B Mini ITX Desktop Case
Power Supply: Silverstone 450W 80+ Bronze Certified SFX Power Supply
Optical Drive: LG GS40N DVD/CD Writer

Total estimated wattage said 409W, but I am looking at the GPU that I picked out and seeing that the minimum is 750W. I thought that I would only need the 450W PSU. Am I...

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Real Power Consumption

OuterVision Power Supply Calculator is the most accurate PC power consumption calculator available and is trusted by computer enthusiasts, PC hardware and power supply manufacturers across the Globe. Are you building a modern gaming PC, low power HTPC media server, or maybe you need to figure out power requirements for a rack in a data center? We've got you covered - OuterVision PSU Calculator will help you to select a suitable power supply unit and even Uninterruptible Power Supply (UPS) for your system. Building cryptocurrency mining rig? Check our Mining Rig Builder tool.

Video Card Overclock

Basic version of the OuterVision Power Supply Calculator allows users to quickly estimate power consumption with minimal selection of PC parts. On the other hand, our Expert, more advanced version of the PSU Calculator greatly extends the ability to select various PC parts and components, adds CPU and Graphics card overclocking, and allows...

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Knute Johnson wrote:
> Rich Emberson wrote:
>> So, I recently built a new system. I figured out what
>> motherboard I wanted, what cpu, how much memory and
>> disk and then I when and used a couple of the online
>> system wattage calculators and got somewhere between
>> 500 to 650 watts. I could not get (find) a PSU
>> with the right connectors for the motherboard so
>> I ended up getting Silverstone Zeus 750 watt supply
>> (yea, overkill). I then got a UPS from a local store.
>> They had a sale and a higher end UPS turned out to
>> be cheaper than a 600 watt unit, so I got a
>> APC UPS BX1500LCD (865 watt) (again, overkill but nice).
>> What is interesting about this UPS is that it can
>> show the current wattage used by your system on its
>> LED (along with other stuff).
>> Now, my strategy for constructing the new system was to pick
>> a motherboard that was build for high-end power and then

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Hi woodencase!

No, he is not saying that the stepperdriver is automatically dropping the output voltage. He is saying that the steppers and drivers can handle 24V. (I don't know what he meant by 5V rail since there are no 5V rail from the driver to the motor.)

You probably wan't 24V and not 36V, even though some of the components, including the steppers might handle 36V, it might get you in problem with the some of the rest of the components. If you are comfortable working with high voltage you can buy a cheap power supply from a place like sureelectronics or similar. PLEASE make sure that you know what you are doing if you use a power supply like that, cover every exposed high voltage part before you connect it to the...

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1W = 1V * 1A

So assuming the card needs 300W on 12V rail the absolute minimum would be 300W/12V = 25A. This is for the card alone and there are other things using 12V - SATA drives (they actually have 3.3, 5 and 12V on the power cable), CPU (via 4-pin connector), etc. 12V rail also provides most of the power drawn through PCIe.

Other rails will generally power all the low powered parts of the computer. USB devices, fans, SSDs/HDDs (I'm guessing on this one - they do get access to 12V rail as well, but I don't see how they could need that much power), most of the motherboard.

Gaming PCs (and others with powerful gpu/cpu) will be getting 90%+ of their power from 12V rail. Non-gaming ones most likely...

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g-unit1111 said:

Most wattage calculators are grossly inaccurate as they base the wattage off poorly made power supplies. That build looks really good, a couple of minor changes I would make would be to get an optical drive and CPU cooler, and change the CPU to FX-6350. Otherwise all looks good!

I didn't do the calculations with a calculator, but by using listed wattage for the parts, calculating for OC, and then adding them together. I don't really doubt that I screwed up the numbers, but I'm just concerned about what my system wattage actually is, and what I'll need.

I plan on adding an optical drive and cooler (the cooler I'll add when the performance of my rig starts falling off and I need to OC). As for 6350, I'm really thinking I'll probably get the 8320, I've heard a ridiculous number of recommendations for it. And considering its just a 8350 with a slower clock, OC should do wonders for it.

I don't know though, I still need to do my research...

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As every cyclist and coach knows, training with power is the gold standard. What many do not know, however, is that it can tell us much more than just training zones. We can use the information gathered through field testing to calculate a cyclist’s VO2Max. The beauty of this concept is that anyone can do it, and the calculation is very reliable and accurate.

In order to calculate your VO2Max, you need to measure two data points.

The first is your wattage, which you can get from your 20-minute field test. The key to the wattage measurement is to make sure the measurement occurs at steady state. The second data point is your weight in kilograms. Take these two pieces of information and just input them into the following equation developed and tested by the American College of Sports Medicine (ACSM):

Relative VO2Max = [(10.8 x W)/M] + 7


W = watts

M = cyclist weight in kg

VO2Max = mL/(kg x min) (ACSM,...

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by Andrew R. Coggan, Ph.D.

Unlike sports such as running or swimming, cycling entails the use of a machine (i.e., a bicycle) that greatly restricts the athlete's freedom of movement. That is, a cyclist's legs move in a circle the diameter of which is dictated by the length of the crank arms, the degree of leg flexion/extension is essentially fixed as a result of the chosen saddle height and crank arm length, almost all motion occurs in the sagital plane, etc. As a consequence, the economy (i.e., O2 cost) of movement during cycling varies less between individuals than in most other sports. Indeed, it is possible to predict someone's rate of oxygen uptake (i.e., VO2) during cycling with reasonable accuracy just by knowing their power output. For example, the American College of Sports Medicine provides the following formula:

VO2 (L/min) = 0.0108 x power (W) + 0.007 x body mass (kg)

It should be noted that this formula is based on data from untrained individuals...

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Formulas and Examples for 12 & 24 Volt DC Systems

This “Rule of Thumb” is intended as a general guide for estimating the DC amps required to operate a DC to AC inverter. Since the calculations yield approximate values, an appropriate safety factor should be considered when designing and specifying system components, such as wire size and length.

12 Volt DC Systems

Formula: 12 volt inverters require approximately one (1) amp of DC input for each 10 watts of AC output.
Example: How many DC amps will a Vanner 12 volt inverter require to operate three 500 watt quartz lights, or a 1500 watt electric heater?
Answer: 1) Total watts = 1500
2) 1500 watts/10 (from formula) = 150 amps

This is the DC current the inverter will use to operate the 1500 watt load.

Note – if this 150 amps is drawn from the battery for one hour, 150 amp hours (AH) of battery power will be used. To support 150 amp hours of battery power, 300 amp hours of battery...

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