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Silent 500W Power Supply
NightRyder writes "To cope with the increased power demands of today's processors and video cards a 500W silent power supply has been released by Antec. The topic of silent power production has been an important one to the computer community recently, especially concerning the increased hardware demands by new game and operating systems. Considering the processing demands of something like, *cough* Windows Vista, its important to be able to keep your computer cool without it getting loud."
http://froogle.google.com/froogle?q=Antec+Phantom+ 500+(PHANTOM+500)+500-Watt+Power+Supply&btnG=Searc h+Froogle&scoring=p
If you "get" pointers add me as a friend (116)!
The topic of silent power production has been an important one to the computer community recently.
Yes, the topic of silent power production has been an important one to the computer community recently. Right alongside in-home cold fusion and perpetual motion machines. Oh wait, did you mean silent power conversion?
Netbooks, they come with Linux or a $3 copy of Windows. Either way, Microsoft loses.
I remember that the story was discussing how the advertised wattages of these power supplies were pretty much lies or gross exaggerations. So we're talking about 500W of power without cooling, but how much power can be drawn until the thing dies from heat exhaustion? And can the 500W output be sustained for extended lengths of time?
Also, does anyone find really strange that slashdot would put the CSS definition files in the images.slashdot.org domain? One computer I use shows Slashdot completely stripped down. This one shows it "normally". Any way to get rid of advertisements and images without losing the formatting as well?
Jesus saved me from my past. He can save you as well.
You're better off buying a high-efficiency power supply that has a 120mm thermistor-controlled fan. Seasonic's S12 500W is my current favorite. The 120mm fan is virtually silent at moderate loads and not too bad at higher loads. High efficiency means less waste heat for the fan to need to cool and lower electric bills.
I want my power supply to be loud. I need as much white noise as I can get.
This powersupply looks nice but what is the news? The article even mentions that this is not antecs first silent power supply. There are also completely silent PSUs made by other companies with better efficiency than this.
So they have mostly eliminated the need for a fan by using some good heat dissipation methods. Though if you are running your PC for extended periods of time or your PC is tucked away under a desk somewhere where it doesn't get much air flow, I would expect the fan to be humming away as normal.
With no fan, it should be pretty close to inaudaible from a couple of feet away.
I looked up the specs on one and it was 82% efficient at full power. That's 90 Watts of heat it needs to get rid of without a fan. Toasty!
Fully agree. The excellent (french) hardware site http://www.matbe.com/ has just tested yesterday the 600W version and it squashes the competition :
1 2-600-watts-l--alim-parfaite/
http://www.matbe.com/articles/lire/250/seasonic-s
Even if you can't read french, look at the figures especially the one concening the silence, it's almost as silent as a fanless yesico!
Men are born ignorant, not stupid; they are made stupid by education. Bertrand Russel
here
Having just discovered this power supply a few days ago, I can definitely say its going in my next PC. Although my primary machine thus far has been an Apple Powerbook, I can definite say that I miss a decent windows computer in my life (I switched to mac just this April). A friend asked me to troubleshoot his PC just a few days ago and scarily enough it took a few seconds to get into the groove of things in his windows environment.
Having said that, the value of a good power supply in your computer is second to none and the power supplies from Antec have never disappointed.
What intrigues me about this particular model is that unlike its less powerful brothers it actually does have a fan. Though under light loads the fan stays off or does very little spinning. For a computer I am building that is doubling as both a light gaming machine and a PVR the large rated output and silent properties make for one killer combination.
And thats what I tell myself every single dang day so I can justify its 200 dollar price tag!
It has a fan.
If that fan is moving, noise is generated.
Ergo it is not silent.
QED.
Do you really need that much power?
I understand how the proliferation of the p4 and its space heater specs created a bit of a backlash against the modern computer and its exponential power requirements & noise generation, but I think it's gone overboard. Who doesn't have some kind of background noise on the computer be it, a movie, or mp3 playing. How really big is the market for absolute silence, beyond media pc's, where high power requirements shouldn't exist.
I've got 2 computers with 6 hard drives, a refrigerator and a small pepsi machine, my room sounds like a wind tunnel and that's just the way I like it!
I've really never been bothered by the noise, it's very loud in my room and I'm just used to it. If it was silent in here I'd never be able to fall asleep because I'm just used to hearing that noise in the background and that always helps me sleep. Kind of like a wave machine or something, it's peacefull. Lets me know we still have power. If I wanted to make a silent PC I could probably do it pretty easily, water cooled and kept in a box (like a wooden box or a cabinet or something like that) with sufficient ventilation.
Don't forget to invest at least $50US into a UPS, so that your investment is isolated from surges, and browouts. You'll also benefit from being mostly immune from short power flickers, as long as your modem and router are backed up by the battery in the UPS too.
Saskboy's blog is good. 9 out of 10 dentists agree.
Power is defined as energy transmitted/consumed/converted per unit time. A battery (like a fuel tank, or a dam) stores energy. Unplugged, power is zero. When you draw from it, it's producing power, and drawing down its energy reserves to do so.
Things get simpler when you use precise language, and avoid confusing yourself.
Nowadays he's at Oqo.
For all you guys jumpin' to get this, the detailed specs of it are located here, as well as a place to buy it. http://www.newegg.com/Product/Product.asp?Item=N82 E16817103926#DetailSpecs
This is a typical PSU review, that is to say worthless. The problem is to do a good PSU reivew you actually need quite a bit of hardware, most little online sites lack even the most basic testing tools (a good multimeter and a controllable load). They make no mention of how they measured the voltages (software, or voltmeter, and from where, pigtail, ATX connector, somewhere else), they put a system that probably doesn't draw 125W DC at load to test out a 500W PSU, they have no real PSU temperature or efficency information. Typical of a site who's reviewing expertiese consists soley of swaping out parts, running 3D Mark and reporting the difference.
Silent PC Review does half way decent reviews, and over the last year or so XBit Labs has starting doing very good PSU reviews. Beyond that there aren't too many places that consistantly hit the mark.
For a silent PSU (not sure why this is that big of a deal, I have a TruePower 330W and can't hear it over the HDD, but I guess some people will always pay for that last dB quieter), there's of course the Phantom 300, the SilverStone 'NF' series, a 300 and a 400W version, the Fortron Source Zen 300; recently reviewed on XBitLabs and Silent PC Review, with just rock solid voltages across the spectrum. And of course the SeaSonic S12 line while not fanless is known to be extremely quiet and highly efficient
Geeze, dude, even skipping over the fact that MS never said 256 MB would be required, do you even understand what Windows uses a video card for?
_How_ is that card going to stay in use while you run a full-screen 3D game? No, really, what UI animations do you think Windows runs in the background while a game has the full screen? Why would it need to keep that RAM allocated? No, seriously.
For that matter, what do you think it uses it for when you're outside a game? Well, 99% of the time for nothing whatsoever, and the other 1% of the time for some fancy UI animation. And that's if it's a REALLY fancy UI.
So a slower graphics card would do... what? Animate those occasional fancy effects at 10 frames per second instead of 60? (And then go back to sitting idle.) Even skipping over the fact that you can turn that fancy stuff off completely, how's that going to force you to get a top graphics card and a 500W PSU?
So, please.
A polar bear is a cartesian bear after a coordinate transform.
To put things into perspective, 10 dBA would be a completely unobstructed 80mm fan at less than 1000 RPM. (And a _good_ fan at that. El-cheapo ball bearing fans are noisier.) You can easily get PSU fans which are around the 30 dBA mark at full speed. E.g., a "silent" Tagan I bought has 28 dBA ones, but it's two of them, so make that 31 dBA for both.
Again, that's for completely unobstructed fans. When you have a fan blowing against an obstruction (e.g., a heatsink), it will make an extra whoosh or whistle. When you have something obstructing its intake, as is the case with most exhaust fans on PSUs, then it makes even more noise. Spin a 28 dBA fan to full speed when it has a big heatsink obstructing its intake, and it really starts to scream.
And you can reach full speed easier than you think. Most of these "silent" PSUs are happy to give you the dBA number when it's running completely idle and in a cold room. That's what it really means for most of them when you see "less than 20 dBA!!!" on the box: yeah, you'll get that if you don't draw more than 1A out of it, and you have your window open in December. Or rather, even then that would be what their fans would do at 5V if they were completely unobstructed, not what they do when mounted on the PSU. But put it in a power-hungry PC and run it on a hot August day, and you'll see most of them hitting the max RPM within minutes.
A polar bear is a cartesian bear after a coordinate transform.
Hook up your UPS to a two 70AH car batteries and let it run unplugged at full-load for an hour, it will be hotter. I read many stories about UPSes overheating or even catching fire when run for too long beyond what their stock batteries would normally allow at full-load. UPSes meant for extended runs have fans... look at APC Back-UPS XS and RS series... the XS has no external battery connector and no fan while the equivalent RS has both the external battery connector and a fan.
Laptop bricks only provide 12-20VDC, the laptop itself has a number of extra converters in it to provide all the other voltages (Vcore, Vram, Vio, Vterm, 3.3V, 5V, etc.) from the battery and charge-controller circuitry. The laptops' external brick is there to decouple non-essential AC power circuitry from the mobile components, the laptop still requires local bulk power regulation. There is also the problem that an external PSU would have slower transient response times. With today's systems where the load can change by 10A in microseconds or less, an external PSU would probably need a secondary regulator (at least a large capacitor bank) inside the case. For a laptop, this is not an issue because everything goes through the battery controller. For ITX, this is not as much of an issue because they are mostly low-power systems.
Since technology is moving towards local voltage regulators for faster transient response, PCs should migrate towards single-rail power distribution (something like 24V with 20-35V tolerance for easy UPS) to avoid triple, quadruple, etc.-tuple conversions... converting directly from a single higher voltage source decreases the load on intermediate regulators, reducing conduction and switching losses across the board.
PSUs with efficiencies over 90% are possible but every 1% over 85% is more expensive than the last... synchronous rectification alone doubles the number of required high-speed, high-current MOSFETs and other parts.