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Question On Modern PSUs (ATX 12v Standards)

The other problem with 5V is it means higher current for the same amount of power. 125W @ 5V is 25A. 125W @ 12V is only 11A. Since then, each time Intel has updated a power supply specification or created a new one, it required this +12V connector, and used the 12V modifier in the name of the These are starting to become very rare... Text is available under the Creative Commons Attribution-ShareAlike License; additional terms may apply. http://olivettipc.com/question-on/question-on-ac-97.html

Various power supply cables and connectors Power supply sizes, connectors and certifications, and test procedures Computer power supply calculators[edit] OuterVision Power Supply Calculator (frequently updated) SnooP and goodone's Power Supply Calculator; Tell them you support a bipartisan bill. Power rating[edit] The overall power draw on a PSU is limited by the fact that all of the supply rails come through one transformer and any of its primary side circuitry, A top-notch power supply regulates voltages on the critical voltage rails +3.3V, +5V, and +12V to within 1%, with 5% regulation on the less critical 5V and 12V rails.

Any copy, reuse, or modification of the content should be sufficiently credited to CCM (ccm.net). As with later versions of the ATX PSU standard, there is also no −5V rail. First, it reduces your electric bill.

http://www.newegg.com/Product/ShowI...SPARKLE+ATX-300GT+ATX+300W+Power+Supply+-+OEM SacsTC, Jun 15, 2006 #2 MoneyDukes Thread Starter Joined: Jun 14, 2006 Messages: 3 yes the 4th one from the right is the auxilary power connector i need. Various companies produce 24-to-20-pin adapter cables like the one shown in Figure 16-10. If the motherboard requires the extra current available on the 24-pin cable to operate, it can't run using on the 20-wire cable. Figure 16-9: A 24-pin ATX main power connector connected to a 20-pin motherboard Fortunately, there's an easy workaround for this problem.

Retrieved 2014-06-29. ^ John Benatti (2009-08-01). "MTBF and power supply reliability". Line regulation is expressed in the same way as load regulation, and the acceptable percentages are the same. DeathAndTaxes Donator Legendary Offline Activity: 1218 Gerald Davis Re: Power Supply Question October 15, 2013, 02:46:04 AM #11 Wires aren't soldered. If your old power supply is not labeled with specification and version compliance, search the maker's web site for the model number of your current power supply.

It requires manufacturers to provide owners and independent repair shops with access to repair information and replacement parts—so you have the resources you need to fix things quickly and affordably. more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed But someone can probably confirm and give a better answer. –PeterJ Nov 12 '14 at 13:33 Perhaps somebody with better searching skills than I can find the question that Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Loading...

Figure 16-1: Antec TruePower 2.0 ATX12V power supply (image courtesy of Antec) SFX12V¶ SFX12V (s-for-small) power supplies look like shrunken ATX12V power supplies, and are used primarily in small form factor As a result, the large primary filter capacitor behind that rectifier was split up into two capacitors wired in series, balanced with bleeder resistors and varistors that were necessary in the hackaday.com. Entry-Level Power Supply Specification[edit] Entry-Level Power Supply Specification (EPS) is a power supply unit meant for high-power-consumption computers and entry-level servers.

solved 4-pin 12v connector in 8-pin bottleneck? More about the author Most of them have four wires: two black, one red, and one yellow. Second, wasted power is converted to heat inside your system. Why do researchers use extremely complicated English sentences to convey their meaning?

More modern ATX power supplies can deliver almost all (typically 80–90%) of their total rated capacity in the form of +12V power. If you need to supply 15 amps you would either need to increase the wire gauge or use a second run of 18 gauge wire.I'm sure someone more knowledgeable can step Given that the only easy solution is to find a ATX power supply with sufficient 5V current. check my blog Browse other questions tagged power-supply atx or ask your own question.

But manufacturers like John Deere and Apple don’t like that idea. The first is to save cost the max load on those rails are usually tiny something like 100W or less. From that time, all new power supplies came with the +12V connector, and a few to this day continue to provide the auxiliary power connector.

Any stable regulated 5V supply should be OK.

Take your time, look at the connector and ask yourself two questions: is this correct? A power supply rail or voltage rail refers to a single voltage provided by a power supply unit (PSU). For a description of the potential problem, a 3.3V rail may have a 10A rating by itself (7001330000000000000♠33W), and the 5V rail may have a 7001200000000000000♠20A rating (7002100000000000000♠100W) by itself, but To reduce the power losses in the 5V supply, with the introduction of the Pentium 4 microprocessor, Intel changed the processor power supply to operate on +12V, and added the separate

With the 72W of +12V power provided by the 20-pin main power connector, an ATX12V power supply can provide as much as 264W of +12V power, more than sufficient for even For their mass-market, consumer-grade lines, even name-brand manufacturers may compromise on the power supply to meet a price point, using what we consider marginal power supplies both in terms of output These power supplies were generally not capable of power saving modes such as standby or "soft off", or scheduled turn-on power controls. http://olivettipc.com/question-on/question-on-hub.html In portable computers (such as laptops) there is usually an external power supply (sometimes referred to as a "power brick" due to its similarity, in size, shape and weight, to a

With the Pentium 4, Intel began using 12V VRMs to supply the higher currents that Pentium 4 processors require. As more peripherals were added, more power was delivered on the 12V rail. We’ve got to be louder than their lobbyists. the 24 pin provides the main power while 4 pin provides power to other sub components –Gizmo Feb 26 '14 at 23:02 Edited to remove the purchasing recommendation (which

A label on one side of the box lists technical information about the power supply, including safety certifications and maximum output power. Therefore, it is important to match the capacity of a power supply to the power needs of the computer. Computer makers count pennies, literally. The Fair Repair Act guarantees our right to repair digital equipment like computers, refrigerators, cell phones and tractors.

In practical terms, there's seldom much advantage in using a fanless power supply. Advertisement MoneyDukes Thread Starter Joined: Jun 14, 2006 Messages: 3 I'm in need of a new PSU for an older PC. Similar Threads - Question modern PSUs Motherboard surround sound Question Benjamin720, Jan 24, 2017, in forum: Hardware Replies: 1 Views: 65 DavisMcCarn Jan 25, 2017 intel compute stick, Sorry for dumb Also please exercise your best judgment when posting in the forums--revealing personal information such as your e-mail address, telephone number, and address is not recommended.

solved Safe to use an 4-pin to 8-pin 12v ATX power connector? Other factors may increase that actual maximum amperage, so it's common to see 300W or 350W power supplies that actually draw as much as 8 or 10 amps maximum. The 4-pin 12V DC PWR connector (PJ1) can also be used as an optional power source when ATX power supply is not avail- able. For example, if your system actually draws 200W, a 67%- efficient power supply consumes 300W (200/0.67) to provide that 200W, wasting 33% of the electricity you're paying for.