WEBVTT 00:00:00.120 --> 00:00:07.000 these days buying a power supply is pretty straightforward unless you're 00:00:04.000 --> 00:00:09.840 going for a really specific aesthetic 00:00:07.000 --> 00:00:16.000 get an ATX power supply which by the way are compatible with ATX microatx and 00:00:13.240 --> 00:00:19.600 Mini ITX motherboards all you got to do is make sure it isn't some kind of 00:00:17.359 --> 00:00:23.519 Bargain Basement no-name unit that will explode when you try and run crisis and 00:00:21.720 --> 00:00:27.880 that it has enough wattage to power your rig and with high-end graphics cards 00:00:25.760 --> 00:00:31.759 getting more and more power efficient these days and those are usually the 00:00:29.480 --> 00:00:36.360 most power hungry part of a computer getting a PSU that's sufficiently 00:00:33.960 --> 00:00:41.000 powerful is becoming less and less important by the day but it wasn't 00:00:38.559 --> 00:00:45.280 always as easy as just slotting in the first thing you could find and carrying 00:00:42.680 --> 00:00:50.879 on with your Computing in fact the power supply that came with the original IBM 00:00:47.399 --> 00:00:52.840 PC only provided 64 watts of power 00:00:50.879 --> 00:00:58.480 pushed a whopping 5 volts through the CPU which would fry any modern consumer 00:00:55.239 --> 00:01:00.480 grade processor and forget about fancy 00:00:58.480 --> 00:01:05.560 features like standby soft reset old school Power Supplies 00:01:03.239 --> 00:01:10.960 only had a hard power switch so everything was either fully on or fully 00:01:07.520 --> 00:01:13.000 off all the time with that said though 00:01:10.960 --> 00:01:19.240 the really difficult thing about these older power supplies was their physical 00:01:15.920 --> 00:01:22.000 layouts even in the era of at power 00:01:19.240 --> 00:01:28.240 supplies the predecessor to ATX that lasted from 1984 until the late '90s 00:01:24.840 --> 00:01:32.520 there were not only multiple different 00:01:28.240 --> 00:01:35.040 form factors such as baby at XT and some 00:01:32.520 --> 00:01:39.280 weird thing that worked with PS2 but some systems even had switches 00:01:37.159 --> 00:01:44.159 slaughtered directly to the computer case out of the power supplies so good 00:01:41.680 --> 00:01:49.079 luck replacing your PSU if it suddenly fizzled out further adding to the 00:01:46.479 --> 00:01:54.200 frustration of technicians and tinkerers everywhere and then as if that weren't 00:01:51.360 --> 00:01:58.799 enough there wasn't even one uniform standard for the actual pin outes onto 00:01:56.840 --> 00:02:04.640 the motherboard amongst these different form factors I mean the power supply 00:02:00.759 --> 00:02:06.840 scene was basically chaos but the ATX 00:02:04.640 --> 00:02:13.160 standard saved us from an eternal Quagmire of proprietary form factors 00:02:09.479 --> 00:02:15.920 when it was introduced in 1995 by Intel 00:02:13.160 --> 00:02:21.560 especially as it actually did a lot more than just make our power supplies mostly 00:02:18.480 --> 00:02:23.879 the same size in fact the ATX standard 00:02:21.560 --> 00:02:29.120 made things much easier for home PC Builders as well as small shop owners 00:02:26.480 --> 00:02:33.200 who wanted to build or offer something different than what the ibms of the 00:02:30.800 --> 00:02:38.160 world were cranking out and not only did it make things easier having just one 00:02:35.599 --> 00:02:41.920 standard made things cheaper improving competition throughout the industry and 00:02:40.319 --> 00:02:46.400 generally speaking higher quality as well as a single standard forced 00:02:44.000 --> 00:02:52.080 manufacturers to innovate and improve on quality rather than focusing their 00:02:48.599 --> 00:02:54.599 efforts on trapping us into proprietary 00:02:52.080 --> 00:02:59.920 Ville and that's exactly what happened assuming of course you're buying from a 00:02:56.120 --> 00:03:02.680 reputable brand ATX power supplies have 00:02:59.920 --> 00:03:09.480 evolved they've come in large and small varieties with both 80 and 120 mm fans 00:03:06.760 --> 00:03:14.560 yet they're still ATX compliant and can fit in a wide variety of cases combine 00:03:12.519 --> 00:03:20.680 that with improved efficiency in recent years as we've seen with the 80 plus 00:03:16.760 --> 00:03:23.280 rating system and ATX has had fantastic 00:03:20.680 --> 00:03:27.159 staying power in spite of several companies trying to replace it 00:03:24.959 --> 00:03:32.120 throughout the years such as antech with their CPX design a few years back and 00:03:30.159 --> 00:03:39.000 even Intel who tried to replace their own standard with the now defunct btx 00:03:36.159 --> 00:03:44.439 form factor ATX also brought us familiar things that we now take for granted like 00:03:41.040 --> 00:03:46.319 the 20 and then later 24 pin connector 00:03:44.439 --> 00:03:51.319 which serves as the primary power delivery for pretty much all modern PCS 00:03:49.760 --> 00:03:56.720 but the wires that connect to the motherboard to enable Smart power 00:03:53.439 --> 00:03:59.760 management and a greater emphasis on 00:03:56.720 --> 00:04:01.959 12vt power delivery you see older power 00:03:59.760 --> 00:04:08.920 power supplies often delivered most of their power on the 5vt rail with many 00:04:05.879 --> 00:04:12.319 actual sensitive components directly 00:04:08.920 --> 00:04:15.439 connected to it these days the smaller 00:04:12.319 --> 00:04:18.199 transistors on Parts like CPUs and 00:04:15.439 --> 00:04:23.000 graphics cards play much more nicely with lower voltages I mean think about 00:04:20.919 --> 00:04:28.960 overclocking your CPU putting two volts through it you might kill 00:04:25.520 --> 00:04:31.479 it but on the flip side as computer 00:04:28.960 --> 00:04:37.240 components have become faster and more powerful they actually need even more 00:04:34.440 --> 00:04:41.520 current that's the amount of electricity being sent through the chip so modern 00:04:39.440 --> 00:04:46.759 power supplies have more power on the 12vt rail and then it gets converted to 00:04:44.479 --> 00:04:51.600 lower voltages for the many different components by voltage regulator modules 00:04:49.520 --> 00:04:55.880 or vrms and those will be present on the motherboard or on the graphics card 00:04:53.440 --> 00:05:00.840 itself this way the components can operate at a safe voltage and still get 00:04:58.600 --> 00:05:06.600 enough current from the higher capacity 12volt rail ATX has also changed with 00:05:04.080 --> 00:05:11.000 the times in other ways introducing PCI Express power connectors as graphics 00:05:08.919 --> 00:05:15.400 cards went from sipping electricity to becoming the most power hungry component 00:05:13.000 --> 00:05:20.120 in a PC a further Testament to its staying power when many other computer 00:05:17.720 --> 00:05:25.520 standards have been put out to pasture within its lifetime but that doesn't 00:05:23.080 --> 00:05:32.120 mean then that all modern power supplies use the exact ATX form factor there are 00:05:28.560 --> 00:05:34.400 also derivative form factors such as sfx 00:05:32.120 --> 00:05:38.680 which is essentially identical to ATX electrically and in fact interoperable 00:05:36.520 --> 00:05:44.440 with ATX motherboards but a heck of a lot smaller making them popular for 00:05:40.720 --> 00:05:46.639 things like super small mini ITX builds 00:05:44.440 --> 00:05:52.000 in servers you'll find power supplies that have a couple of eps connectors so 00:05:49.800 --> 00:05:56.160 EPS standard power supplies which actually is kind of funny because that 8 00:05:54.440 --> 00:06:01.479 Pin CPU power connector ended up making its way into desktops as well and 00:05:58.759 --> 00:06:08.000 finally there are things like tfx for slim Tower systems or I mean they still 00:06:04.360 --> 00:06:11.199 do exist the dreaded proprietary power 00:06:08.000 --> 00:06:14.000 supply fortunately for you though the PC 00:06:11.199 --> 00:06:18.360 DIY Enthusiast most of those power supplies are nearly irrelevant unless of 00:06:16.880 --> 00:06:22.880 course you find yourself working for a YouTube channel where you have to solder 00:06:20.680 --> 00:06:27.599 connectors on weird power supplies you found in a scrap Heap somewhere in order 00:06:25.000 --> 00:06:33.639 to get a computer to boot at the last moment in a competition say for example 00:06:31.360 --> 00:06:41.120 speaking of getting things done in just a moment brain tree payments my friends 00:06:37.199 --> 00:06:43.560 brain tree is the way to achieve easy 00:06:41.120 --> 00:06:49.840 mobile payments maybe you're working on the next Uber Airbnb or GitHub well if 00:06:47.560 --> 00:06:53.360 you are why not use the same simple payment solution that helped them become 00:06:51.520 --> 00:06:58.000 what they are today brain tree makes mobile payments so fast easy and 00:06:55.599 --> 00:07:01.879 seamless it's almost magical 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you disliked it dislike it if you want to check out other channels boom if you want to leave a comment suggesting 00:07:38.479 --> 00:07:46.720 future fastest posses boom and finally if you want to subscribe then I like you