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[AnandTech] Thermaltake Releases New SFX PSUs: 450W and 600W, rated at 80 PLUS Gold - Page 2

post #11 of 35
7 year warranty... I dunno about you guys but I like it. Don't really need one but if pricing was competitive I see no reason why someone shouldn't pick one up.
post #12 of 35
Quote:
Originally Posted by DunePilot View Post

7 year warranty... I dunno about you guys but I like it. Don't really need one but if pricing was competitive I see no reason why someone shouldn't pick one up.
The 7 year warranty is probably to compete directly with Corsair. The latter, though, was first to market with a 7-year warranty SFX PSU of 600w, and it has a history of quality products. Unless it costs 70% of the SF600 or less, i'd go Corsair everytime.
    
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post #13 of 35
Quote:
Originally Posted by HybridCore View Post

It's most likely the exact same Enhance unit so no hopes there. It's not even that bad, just not as good as some other units.

Hard to beat the SF600 (haven't seen SF450 measurements) which pulls 80 Plus Platinum efficiency when only rated for Gold and is less expensive than the Silverstone units.

The problem isn't the efficiency, the problem is the fan profile and the resulting noise. Gold to platinum on a 600W unit makes for a negligible savings at the end of the year. What matters is voltage stability, ripple and other stuff, not efficiency as a thing.
Quote:
Originally Posted by Artikbot View Post

High end PSUs are so efficient you barely need any cooling these days.

Just get them to suck from the outside and dump into the case and an 80mm silent fan does the job more than well enough.

But that isn't as easy as you picture it. You need to consider the context: small psu's go into small enclosures (nobody would use an SFX psu if you could put an ATX one, since the latter are cheaper and more silent), and small enclosures do not have the best airflow. So... it is a delicate matter.

Even more so with the disastrous Silverstone 700W SFX unit. Why it's a disaster? Because ironically the fan profile is load based and not temperature based... which, in certain scenarios, means that the psu will get hot in poor-ventilated cases and power off due to excessive heat. That happens when the system is idling, for instance.

Quote:
Originally Posted by epic1337 View Post

what happens if these fans were replaced? furthermore will the PSU run if the fan were disconnected?

You will have problems. The psu's are designed with the fan they come with in mind, in terms of that CFM/pressure they develop at any given pwm or voltage rate. Many people modded their Silverstone SFX units with Noctua fans (but the fans were attached on the outside)... but it is a dangerous business if you don't do it properly, you just might blow something up.
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post #14 of 35
Quote:
Originally Posted by prava View Post

But that isn't as easy as you picture it. You need to consider the context: small psu's go into small enclosures (nobody would use an SFX psu if you could put an ATX one, since the latter are cheaper and more silent), and small enclosures do not have the best airflow. So... it is a delicate matter.

 

Yeah, that's why I elaborated further on the heatsink size vs. airflow question further down.

 

It becomes a packaging vs. cooling balance, in which the former wins over the latter as far as marketing is concerned.

   
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post #15 of 35
I just hope some of these manufacturers are going to make some nice SFF cases to go with these PSUs . Something that is not like the Prodigy and such , maybe like a smaller better made version of the "Define Nano "or something like that , but to suit air cooling not multiple rads in an ITX !
And to comment on what was written earlier on here , I think I would go with the Corsair too !
post #16 of 35
Quote:
Originally Posted by Artikbot View Post

Yeah, that's why I elaborated further on the heatsink size vs. airflow question further down.

It becomes a packaging vs. cooling balance, in which the former wins over the latter as far as marketing is concerned.

For Silverstone yes, it does. But Corsair seems to be doing the things well. Something unsurprising, to be honest, since they aren't known to screw things up.
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post #17 of 35

From the teardown it looks like a much more refined unit than the Silverstones, at least as far as I can tell from the secondary side switching stage. Very modern SMD FETs with super low RdsOn and great current handling capability, so that definitely helps keep things cool where power is historically being dissipated the most.

 

Everything seems to be way overspecced too (generally you see crap like IRF450s on the primary side switches), which is good.

   
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post #18 of 35
Quote:
Originally Posted by prava View Post

You will have problems. The psu's are designed with the fan they come with in mind, in terms of that CFM/pressure they develop at any given pwm or voltage rate. Many people modded their Silverstone SFX units with Noctua fans (but the fans were attached on the outside)... but it is a dangerous business if you don't do it properly, you just might blow something up.

then its possible to just disconnect the old fan and place a new fan, but rather use the 12v supply directly from the psu?

i thought the PSU wouldn't power up if you disconnect the fan, i guess they could still work without the fan.
Edited by epic1337 - 8/3/16 at 8:57am
post #19 of 35
Quote:
Originally Posted by epic1337 View Post

then its possible to just disconnect the old fan and place a new fan in, but rather use the 12v supply directly from the psu?

Yeah, PSU fan mods can work. If you can find the specs of the original fan, you can sometimes even find a fan that works in the same voltage range which can use the temperature control. See for instance this post. The Noiseblocker mod for the ST45SF-G is relatively popular.
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post #20 of 35
As others said, the Corsair equiv. SFX PSUs work great and are competitively priced vs. the Silverstone "cousins". Pricing better be much more attractive than either of the two for them to have a chance.

Rocking a SF600 since last month...pushes my clocked 6700K (don't care to go more than 4.6 on that ITX build) and a stock 1070 Strix without a hiccup.
I did not love the modular cable plugs on either side of the cables, but works fine otherwise.
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