Special Computex Live Stream with Jonny Guru The POWER SUPPLY EXPERT.
Tech YES City
Streamed live on May 31, 2017
This is a special one off live stream with the power supply guru from Corsair known as Jonny Guru! Let's chat and hang out and have some fun! Also a big thank you to MSI and Corsair for helping support this computex trip!
https://www.youtube.com/watch?v=5p1IwK9U7d4
It's a long video 51:01, and here is a list of things that I thought were good if anyone is interested.
(0:34) What makes or breaks a power supply? Jonny Guru: People assume efficiency rating automatically means quality. All it means is efficiency. Some things you want to look at are the temperature rating for example. Some of the cheaper units are only rated at 25C. It’s never going to be 25C in your PC. The importance of that is the components inside have what is called a derating curve. (1) As a part gets hotter is ability to output declines.
(1:40) How long is this going to last if it’s got these compactors in it? In my opinion the whole capacitor thing is overblown. Even the Japanese capacitors you get aren’t even made in Japan. They are actually just Japanese brand made in China. It cost so much to import into China all the companies have factories in China, and that’s who they sell to power supply companies.
(2:05) One thing that is really overlooked is the fan. That is going to be the first thing to die in a power supply. There are a lot of sleeve bearing fans out there, and unfortunately there aren’t going to last very long. You want a good rifle bearing fan, or an fdb fan. When the fan dies and you don’t know it than it just heats up till it dies.
(2:50) That’s one thing about power supplies they all don’t have the protection circuits. Over temperature protection, the over power protection, short circuit protection. You kind of take for granted that a power supply is going to have all that. But they don’t.
(3:10) I did have 2 power supplies now that would randomly cut out. And they were rated way above what those parts would juice. I ended up replacing the power supplies, and the system would work. What would that be? Jonny Guru: Sometimes we will see a cheaper power supply shut down when you start up a game or a benchmark, because so much power in drawn by the graphics card of the CPU through just the one connector. The PCI-E or the EPS connector for the CPU draws so much power so quickly it causes a drop in voltage. The power supply has an under voltage protection. It could be anyone of the protections, or a cheap power supply. Or it could be protections that are hypersensitive. It sees that something is wrong and it shuts off. Some power supplies have overcurrent protection, but it’s rarely that. It would have to have 30 amps of continuous draw. Or it could be a real hot environment. If its 35-45 degrees inside your power supply is just going to freak out and shut down.
(9:06) Server power supplies are mission critical. They are made to not fail. They don’t necessarily have the best voltage regulation, or minimal ripple that’s all consumer level products. Because consumers read reviews, and it’s like this guy makes a great power supply. Now the next company comes along, and has to make a better so they can get a better review. And now we see power supplies leap frogging themselves every year , so they can get a better review.
(9:40) What can get better on power supplies? A term that gets used a lot on http://www.jonnyguru.com/ is “mythic performance.” Because we are to the point now where are voltage regulation and ripple is so “mythic” is doesn’t even matter anymore.
(13:40) Which PSU is the best all-rounder for a budget with a GTX 1060 or a RX 580, and of course an R5 1600. RMX had been proven a very low failure rate. It’s only gold efficiency, but it has a zero RPM mode that works really well because it has a micro controller. Corsair is one of the only companies that uses a micro controller to control fan speed, so we can actually program the fan profile in there. RMX’s are the least expensive units that come with a fan controller. Best bang for the buck.
(34:23) Even if you have a fantastic power supply and even one thing goes wrong during the assembly process 3 months, 6 months, 1 year down the road something can fail. You can have a tiny brake in the solder or crack.
(39:24) Modular vs. Fixed cables in voltage variation and efficiency? Any point of connection is going to be an efficiency drop, because it adds resistance. And the pins, you know everyone is the gauge of the wire, the numbers of connectors, the pins are the part that is most susceptible to high current. So, when people use thing like adapters like a molex to a sata adapter, or something like that. They are putting stress on those pins. It doesn’t matter what the gauge of the wire is, or that you’ve made it like 50 feet long. On a modular power supply that is 10 times worst, because you have the pins that plug into a modular interface. Everything that is plugged into that cable has to go through that connector.
(41:28) So do you think the semi-modular are the best? It goes without say that is going to be less problematic than going fully modular. Fully modular is going to be worst, because of the potential for the connectors to go loose or the potential for the connectors to fail. At least with the semi-modular you won’t have that problem though with the 24 pin and EPS. I love fully modular though, because if I’m changing things on my PC I just pull them all out than it.
(42:13) Ask Jonny if there are any problems with wine, and the RM1000i? In this day and age every power supply is susceptible to coil wine, because in order to get the better efficiency they have to lower the switching frequency down to almost an audible level. Parts that are wound like a coil, transformer, or even a poly capacitor if they are not made absolutely perfect then you end up with these vibrations. Vibrations cause audible noise. 20 years ago the inefficiency was 70%, so the switching frequency high even if you had the crappiest parts in there you wouldn’t hear it.
(44:02) What are some good rules of thumb when buying a power supply? Don’t get anything no one has ever heard of. The fan is going to be the first thing that goes on a power supply. Fan types get a FDB if you don’t want to have to switch out your fan.
(48:19) If you have 100 volt or 240 volt, which is better for a power supply? The 240. Higher voltage less current. Less current less heat on your primary side parts. Japan is 100 and that’s hard on a power supply.
Edit: Newegg is offer $10-20 rebates on RMX PSU until next Thursday.
https://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=100007657%2050001459%208000&IsNodeId=1&Manufactory=1459&page=1&bop=And&SpeTabStoreType=0&SrchInDesc=RMX&PageSize=96&order=BESTMATCH
Here are a couple for quick link
CORSAIR RMx Series RM550X 550W 80 PLUS GOLD Haswell Ready Full Modular ATX12V & EPS12V SLI and Crossfire Ready Power Supply $89.99 Sale Ends in 6 Days (Wed) $69.99 after $20.00 rebate card
https://www.newegg.com/Product/Product.aspx?Item=N82E16817139144&Tpk=N82E16817139144
CORSAIR RMx Series RM650X 650W 80 PLUS GOLD Haswell Ready Full Modular ATX12V & EPS12V SLI and Crossfire Ready Power Supply $99.99 Sale Ends in 7 Days (Thu)Save: $20.00 (17%) $79.99 after $20.00 rebate card
https://www.newegg.com/Product/Product.aspx?Item=N82E16817139143&Tpk=N82E16817139143
2nd Edit: Jonny Guru:Corsair bases the warranty of it's PSU's on the quality of the parts inside. And these RMx Gold series come with a 10 year warranty. And they base that on the computer running 24/7.
Facebook
Twitter
Instagram