PSU tier list 2.0

Page 158 - Seeking answers? Join the Tom's Hardware community: where nearly two million members share solutions and discuss the latest tech.
Toggle sidebar Toggle sidebar
Status
Not open for further replies.
Pins can be reseated quite easily. As long as the connector is viable, there shouldn't be a problem. Anyone with 1/2 a brain could take a standard 24pin atx and convert it to 14pin, but normally this happens with an adapter.

If that Huntkey is related to the Jumper series, its entirely possible its a better psu than any of the Lite-Ons, but if its not..... best keep the fire extinguisher handy.
 

I was reading the techpowerup review http:// for that unit and came across this
The hold-up time is very low, which is a shame as this is a premium PSU. To add insult to injury, SAMA increased the power-good signal's hold-up time by a lot, which makes this PSU a possible danger to your hardware. The voltage on the +12V rail is only 10.22V when it de-asserts the PWR_OK signal! SAMA should use higher capacity APFC caps; however, higher capacity APFC caps would also result in increased losses and less efficiency. SAMA should, in fact, meet Titanium efficiency requirements without altering the APFC converter's design.
Click to expand...

I guess we might want to avoid this unit even though it looks really good on paper
 
^^Perfect example Nuckles on why Jonnyguru aqnd other siters need to start adopting more testing. The Jonnyguru review comes out positive, but the Techpowerup reveals other things.

But the EVGA G2 550W also has this problem, yet nobody seems to talk about that. Maybe because of EVGA and Superflower bias? The EVGA 550W has AC_LOSS to PWR_OK time of like 25ms, but they let the signal drop at 10.8V instead, meaning real hold-up time is 11ms, 0.6V below ATX spec. 14ms of below 11.4V. But of course when Superflower and EVGA have something wrong with it, nobody talks about it.
 


So you're saying that as long as the Sama Forza 800W is reliable, it doesn't matter if the PWR_OK signal is dropped at 10.2V? I mean, it'll only hurt your attached hardware, it won't affect the PSU itself.
 


Precisely. There comes a point where you go too far caring about all of these nit-picky details that make no real difference.
 
It's not just about the reliability of the PSU, it's about the resulted reliability of the components attached to the PSU. Those PSUs with all those nice pretty nitty-gritty numbers, the tight voltage regulation and ripple and noise suppression, that helps increase the longevity of the VRMs of the motherboard, GPU, hard drives.
 
That sounds nice on paper, but in the real world, most of that stuff has a neglible impact on anything and would go unnoticed for years.

Sure there are outrageous examples of bad psus destroying other components without failing themselves, but you won't find them in Seasonic, Super Flower, or Delta no matter how much you nitpick reviews.
 
I have a good question, and I hope somebody has a good answer. Do components such as the graphics card require a specified amount of amperage or wattage when operating?

For instance, if we say the R9 390 requires 300W under load, then if you have a PSU that is outputting 11.5V (which would stink, but an example), then it'll be using a much larger amperage than if the PSU is outputting 12.1V.

Or is it the other way around? Does the R9 390 specifically require let's say 25A of current under load, making PSU #1 with its 11.5V actually decrease power consumption and PSU #2 increase power consumption?

Another way to put it: Does a PSU that outputs a higher voltage result in higher power consumption from a GPU?
 
There's a great article here by Gabriel Torres on Hardwaresecrets that is a very good read for anybody; it covers FDB fans that really aren't FDB fans. Only Matsuhita-licensed FDB fans use the actual patented fluid dynamic bearing design. Other companies, ones that don't pay licensing fees to Matsuhita, cannot use a real FDB bearing but instead they claim that their other types of bearings are FDB when they're not. Many of these "FDB fans" are really just rifle bearing designs falsely called FDB. Others are no better than sleeve bearings themselves, especially some awful designs that don't even allow the lubricant to flow into the bearing since the grooves don't even reach the end of the bearing (Logisys and Thermaltake "FDB" fans).

Just something to watch out for, don't get so excited if your power supply has a fluid-dynamic bearing fan, because it may not be any better than a normal sleeve bearing.
 
Status
Not open for further replies.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom