Based on the spec page, it uses W under load. Google is your friend. The problem with the TDP numbers Nvidia uses is that they are average load figures. This works pretty well for heat dissipation, but in order to supply sufficient power you need the peak figures, otherwise the system will shut down every time it hits peak due to lack of power. So, we need peak Amp usage, not average heat dissipation TDP figures Dell has a habit of cutting its PSUs to the minimum required.
They also suffer for it, and the ratings for their Customer Service isn't as hot as their systems If you can't get a bigger PSU to fit that case, you are going to be left with nothing when the W unit dies. You would be better to try to find one that will fit, even if you have to mod the case to get it in. They come in and watt flavors. Good tip, Gramps. Its actually not a particularly cheap PSU.
It's just that W is the most powerful this form factor comes in. It is a case that is intended for small form factor games. And no, I am not willing to risk blowing anything up, that is why I am doing my research first :p If your estimates are accurate. My plan is to run some tests, and if I get any system shutdowns due to lack of power, I may get one of those old Dell DA-2 Optiplex power bricks, lop of the connector and solder on a PCIe video power connector, and a molex connector to relay the power on and use it for This would only have to last until the sandy bridge launch when I plan on building a new full tower system going small form factor was a mistake I don't plan on repeating.
If it's a really nice PSU, there are no dependencies. They just operate as independent rails. The specs are very thorough because you need to know these things to select the right PSU. And then, there are PC power supplies. Most PC power supplies, even many good ones, would be more truthful if they stopped refering to "specifications" and used the term "marketing hokum". I'm not going to delve into that subject here because it would involves pages and pages of cussing.
And if you're looking for a PC PSU which doesn't have dependencies between it's rails, keep dreaming. They've got dependencies. They just rarely tell you what they are.
If you get a good PSU then it may actually meet the vague and incomplete specifications on the label. If you get a bad PSU then the wattage ratings on the label can best be described as a work of fiction.
PC power supplies actually do have real specifications. They just don't publish them. As a result, parts of the rest of this page have to be based on informed guesses. It would be nice to give you definitive answers but it's hard to do that when you don't know for sure what kind of PSU you're dealing with.
In order to understand the 12 volt rail mess, you first need to know about three different kinds of power supplies.
Don't just read about the kind of PSU that you think you have. There's a pretty good chance that what you think you have and what you actually have are two different things. A single 12 volt rail PSU just has one output circuit which generates 12 volts.
All the various connectors which supply 12 volts are hooked to that one output. This kind of PSU will work just fine with a modern computer as long as it can deliver the wattage. That's true even if the motherboard requires the extra 4 pin or 8 pin 12 volt CPU connector or if your video card requires the 6 pin PCI-Express connector.
As long as your single 12 volt rail PSU has all of those extra connectors and sufficient wattage then things will work properly. A multiple independent 12 volt rails PSU has more than one 12 volt rail. Each of the 12 volt rails has its own separate circuitry. Each of the 12 volt power connectors on the PSU cables is hooked up to one of the 12 volt rails. Since this is merely a PC PSU rather than a "real" one, the manufacturers often don't feel obligated to tell you which connector is hooked to which rail.
One reason to have multiple separate 12 volt rails is to improve the load regulation and noise on the rail. When you connect an active load to a voltage rail you tend to end up with a noisy rail which jumps around a lot. It's not a nice flat voltage. It varies. The more active loads you hook to a rail the messier it gets. So building a PSU with independent 12 volt rails improves the "cleanness" of the power on each rail.
Normally this is only done if you have some circuitry which is extremely picky about the quality of its voltage rails because separate rails cost more money than a single rail.
By the way, in case you're ever tempted to hook the independent 12 volt rails together I've seen people on the Internet who think this is a good idea , don't do it. Your 12 volt rails may have different ideas about what voltage they should set their rails to.
So I have to assume that its capabilities are limited in this regard. The only way to measure the true current flowing on the 12V rail is using a Clamp amperemeter , also called a Current clamp. To be specific, you need one that is able to measure DC currents, so one using Hall effect feedback loop, preferably with a digital display.
To measure the current, you select all the yellow wires from your ATX power connector or a PCIe 6 or 8 pin connector or a HDD power connector and clamp the clamp around them and around them only.
These yellow wires are used for 12V. Similarly, red is 5V and orange is 3. Black is GND. If you can't get a hold of a clamp amperemeter, then using a cheap power meter between the wall socket and the power cable will give you the total power used by the computer. The 5V rail is largely unused, except for HDD electronics in some cases. Your calculation is right for the peak case in this regard, including power conversion efficiency.
You should add 3W for each stick of memory and W for mainboard chipset, though. Altogether, your PSU appears to be enough for normal usage and the only moment when it'll get anywhere near its full capacity is upon boot, when the drives are all spinning up at once and the CPU is not yet programmed for power-saving and runs full-throttle.
If this becomes an issue, the drives can be configured to be spun up in a staggered manner by the OS. If you're suspecting the PSU to be a reason of unstability, attaching an oscilloscope to the individual voltage rails and watching for voltage fluctuation under different loads is a much better indication of an insufficient or failing PSU than measuring the rail current. With other words: 2A current with 2V gives you 4W power. Mostly you know the voltage, it is written on the device.
Hard disk's electronics is going with 5V, it's mechanics is going with 12V. The motherboard is a more complex thing, it has a lot of chips, with different power needs.
But mostly the graphic 3D chips, and yet the RAMs are using most of it's power. To measure the current in these devices is not simple, because although their voltage is known, to measure their current you need soldering current measurement can't be done in parallel, it needs to be bound serially. There are some weired motherboards around that use the 5V rail, but any newer board with the P4 connector or one that can support a precott or A64 or high model XP will deffinatly use the 12V rail.
What does form factor ATX mean? Stands for "Advanced Technology eXtended. It was introduced by Intel in and was designed to replace the previous "AT" standard for desktop PCs. What is Single rail power supply? What does it mean by single or multi rail? The difference between single or multiple rails is this: Multiple rail: each trace is monitored separately, so if, say, one trace goes over 25A the power supply will shut down.
What are the 3 main form factors for power supplies? Just as motherboards come in different shapes and sizes, so do power supplies. What is the difference between direct bilirubin and total bilirubin? How big should a front door wreath be? Co-authors 3.
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