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Thread: SFX: Silverstonetek SX700-PT, any guess how it will compare with SF600?

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    Quote Originally Posted by cmmcmm View Post
    If I understood it right, these high spikes are not common among GPU:s but it's a Vega 64-specific thing.

    Are AMD incompetent, any guesses as to why they shipped Vega64 with this "feature"?
    It can happen on other cards, like some of the Titans and some after market PCB designs of high end cards like the GTX 980 Ti and GTX 1080 Ti. I think FuryX had similar power spikes as well.



    It's more of a recent issue brought on by some of the newer power saving features. Before GPUs just shut down a cluster of processors (or more) when going into a power saving mode. Now a days, they can don't need to shut down a cluster but can instead clock that cluster very slowly, and then quickly ramp it up when needed. This ramp up is what causes the massive spike.



    Obviously some considerations are made by board designers to handle this; but at a certain point "power is cheap" definitely becomes a factor, especially as GPU margins are slim, so too many components in a VRM can really eat up your profit margins.
    When that's the case, they build a simpler VRM and then just tell you to get a 750w PSU instead.

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    Quote Originally Posted by SilverStone View Post
    The SX700-PT isn't coming out anytime soon. So SF600 is probably still your only choice right now if you want a standard SFX PSU with the highest threshold of fan off operation. Though Cybenetics is showing Corsair's upcoming SF450 Platinum and SF600 Platinum to have even higher threshold at around 180W, so you can probably wait for those too.
    Dear Silverstone,

    Thank you very much telling me. Yes it looks like the SF600 Platinum will be released very soon. Four quick followup questions:

    1. Can you please double-confirm the 180W fanless information, also where did you get it from?

    2. There is talk out there about replacing the SF600 Platinum's fan with an even-higher-quality fan from Noctua (https://smallformfactor.net/forum/th...um.7775/page-3).

    I think they base this on the information that the SF600 Platinum and Gold will have exactly the same fan setup.

    Can you confirm exactly which fan is the very best one that fits here (made by Noctua I guess)?

    3. When is the SX700-PT coming to market, as it looks today?

    4. About what fanless wattage threshold will the SX700-PT have?

    Thanks!!

    (Also posted the SF600 Platinum related Q:s at http://forum.corsair.com/forums/showthread.php?p=968187 and http://forum.corsair.com/forums/showthread.php?p=968186 .)
    Last edited by cmmcmm; 08-12-2018 at 05:40 AM.

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    Quote Originally Posted by cmmcmm View Post
    If I understood it right, these high spikes are not common among GPU:s but it's a Vega 64-specific thing.
    No, they are common, just not that high.
    But you have a similar thing on the other side with some 1080ti cards as well.

    And one of the Problems is that the manufacturers of those products don't want to use wet electrolytic caps as they advertize solid electrolytic caps.Those might have helped with the spikes a bit.

    The other Problem is that everyone is whining about power consumption of the cards and 5-10W less is made as an enormous plus. THat causes "the other Side" to implement more aggressive power saving mechanisms like this.

    And thus implement the "Race to idle" philosophy of doing things....


    And if that causes Problems? No Problemo, people will blame the PSU manufacturers anyway, worked well with the first generation of DX10 cards that switched off almost all of the Multi Rail PSU of the time, should work well now...

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    Quote Originally Posted by SilverStone View Post
    The SX700-PT isn't coming out anytime soon. So SF600 is probably still your only choice right now if you want a standard SFX PSU with the highest threshold of fan off operation.
    Could you pls make the Semi Fanless mode Optional for tose units?

    Because if you use a semi Fanless PSU (like the SX700-LPT) in a RVZ-01 and put a 3,5" HDD above the PSU, the PSU seems to heat up the HDD. And since you don't allow for 15mm 2,5" HDDs, that is the only option to use a 4TB HDD.
    And 3,5" HDDs are a bit faster (in this case its a 7200rpm Toshiba that is around 50-55°C in use with just ~25°C Room Temperature).


    A good quality fan with a good motor and bearing and low fan rpm is better anyway than Semi Fanless
    Especially since you can use that for cooling, especially in small form factor systems, it should have an option to switch the Semi Fanless Mode off because of size constrictions...

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    Quote Originally Posted by cmmcmm View Post
    Dear Silverstone,

    Thank you very much telling me. Yes it looks like the SF600 Platinum will be released very soon. Four quick followup questions:

    1. Can you please double-confirm the 180W fanless information, also where did you get it from?

    2. There is talk out there about replacing the SF600 Platinum's fan with an even-higher-quality fan from Noctua (https://smallformfactor.net/forum/th...um.7775/page-3).

    I think they base this on the information that the SF600 Platinum and Gold will have exactly the same fan setup.

    Can you confirm exactly which fan is the very best one that fits here (made by Noctua I guess)?

    3. When is the SX700-PT coming to market, as it looks today?

    4. About what fanless wattage threshold will the SX700-PT have?

    Thanks!!

    (Also posted the SF600 Platinum related Q:s at http://forum.corsair.com/forums/showthread.php?p=968187 and http://forum.corsair.com/forums/showthread.php?p=968186 .)
    As mentioned in the previous post, test results from Cybenetics show how SF600 Platinum performed, so that's where we see it can remain fanless up to about 180W.

    I can't speak for Corsair, but SilverStone's official position is to discourage users from swapping out fans in their PSUs. We spent a great deal of time testing and fine tuning the fans used in our PSUs to make sure they cool properly at their rated power. Every fan has different air flow, pattern, and pressure characteristics so changing fans to another one, even ones with similar fan speed or airflow rating may not work properly.

    As for SX700-PT, we don't have a specific time frame for its release yet, and we cannot reveal its final performance/fan behavior characteristics ahead of release at this time. The only thing we can say is that we'd like to release it before the end of this year and that it's possible SX700-PT may have semi-fanless capability similar to other existing SilverStone semi-fanless models, which we tend to set at 15% to 20%.


    Quote Originally Posted by Stefan Payne View Post
    Could you pls make the Semi Fanless mode Optional for tose units?

    Because if you use a semi Fanless PSU (like the SX700-LPT) in a RVZ-01 and put a 3,5" HDD above the PSU, the PSU seems to heat up the HDD. And since you don't allow for 15mm 2,5" HDDs, that is the only option to use a 4TB HDD.
    And 3,5" HDDs are a bit faster (in this case its a 7200rpm Toshiba that is around 50-55°C in use with just ~25°C Room Temperature).


    A good quality fan with a good motor and bearing and low fan rpm is better anyway than Semi Fanless
    Especially since you can use that for cooling, especially in small form factor systems, it should have an option to switch the Semi Fanless Mode off because of size constrictions...
    Adding a semi-fanless to always on fan mode switch is out of the question at this point for this upcoming PSU. But you are right that sometimes having a good fan run all the time is better so we may even remove semi-fanless feature for it!
    Last edited by SilverStone; 08-13-2018 at 01:45 AM.

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    Quote Originally Posted by SilverStone View Post

    I can't speak for Corsair, but SilverStone's official position is to discourage users from swapping out fans in their PSUs. We spent a great deal of time testing and fine tuning the fans used in our PSUs to make sure they cool properly at their rated power. Every fan has different air flow, pattern, and pressure characteristics so changing fans to another one, even ones with similar fan speed or airflow rating may not work properly.
    I concur.

    We have a number of people, especially in EU, that replace the stock SF fan with Noctua's 92mm fan. We've done the same and have found that while it is quieter at lower loads, it cannot support proper cooling at higher loads and is actually louder at those loads (despite not being able to keep up).

    PSU companies don't tend to "throw whatever fan fits" into a PSU. End users often do tend to think they know best, but that typically back fires on them unless they're running a corner case.

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    Quote Originally Posted by SilverStone View Post
    Adding a semi-fanless to always on fan mode switch is out of the question at this point for this upcoming PSU. But you are right that sometimes having a good fan run all the time is better so we may even remove semi-fanless feature for it!
    Well, for the normal Standard ATX PSU its probably fine especially since you can use larger heatsinks in the PSU itself...

    But with the SFF PSU it can be an issue, because its in a very restricted space and the PSU is mounted close to other components, in this case a Harddrive.
    Especially since there is no way to allow for some Airflow for the 3,5" HDD...


    The Problem is that Semi Fanless seems to be a Marketing Point that People seem to look for for whatever reason

    So the only way to allow both, get the Marketing Point and allow for better airflow/lower temperatures inside the Small Form Factor case is to implement a switch...
    The Alternative is to remove this feature and advertize it with better airflow, so that the PSU stays cooler...

    Quote Originally Posted by jonnyGURU View Post
    I concur.

    We have a number of people, especially in EU, that replace the stock SF fan with Noctua's 92mm fan. We've done the same and have found that while it is quieter at lower loads, it cannot support proper cooling at higher loads and is actually louder at those loads (despite not being able to keep up).

    PSU companies don't tend to "throw whatever fan fits" into a PSU. End users often do tend to think they know best, but that typically back fires on them unless they're running a corner case.
    I was trying to tell that some people in a German Forum (Hardwareluxx), but they didn't want to listen and did it anyway...

    Seems like there are too many people, who haven't heard about this story:
    http://www.kctv5.com/story/19767067/...trocuted-while

    Maybe you should start printing the max. internal Voltage on the Label (wich is AFAIR usually between 350 and 450V, though DC)...

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    Quote Originally Posted by Stefan Payne View Post
    Seems like there are too many people, who haven't heard about this story:
    http://www.kctv5.com/story/19767067/...trocuted-while

    Maybe you should start printing the max. internal Voltage on the Label (wich is AFAIR usually between 350 and 450V, though DC)...

    '..unplugged at the time..', so just the capacitors were enough.
    Attached Images Attached Images
    Last edited by ashiekh; 08-13-2018 at 11:45 AM.

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    Weird. I got shocked a few times (just a tiny bit...) from the primary side of PSU, disconnected from mains, of course, and mostly very crappy units. Didn't realize it was possible to get shocked or worse on/from secondary side...
    I do find it funny nobody commented on this quote from the article:
    "Why tear into it to replace it for $20? You're taking your life into your own hands," he said, adding it's a risk even he with all his experience won't take.
    R7 1700x @3,95
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    Quote Originally Posted by strumf666 View Post
    Weird. I got shocked a few times (just a tiny bit...) from the primary side of PSU, disconnected from mains, of course, and mostly very crappy units. Didn't realize it was possible to get shocked or worse on/from secondary side...
    Where did you get that he was killed by the secondary side?

    I don't think it's possible for the secondary side to provide a lethal shock. Even if you put the +12V and ground in your mouth.

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