|Brand Name||SilverStone Technology|
|Item model number||ST45SF-G|
|Item Weight||3.2 pounds|
|Product Dimensions||3.9 x 4.9 x 2.5 inches|
|Item Dimensions L x W x H||3.94 x 4.92 x 2.5 inches|
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SilverStone Technology 450W SFX Form Factor 80 PLUS GOLD Full Modular Power Supply with +12V single rail, Active PFC (ST45SF-G)
- Enter your model number to make sure this fits.
- Support standard SFX form factor and ATX via included bracket
- 80 PLUS Gold level efficiency (87%~90% efficiency at 20%~100% loading)
- 100% modular cables
- 450W continuous power output at 40-degree C operating temperature rated for 24/7 operation
- Class-leading single Plus 12V rail with 37A
- Strict Plus or Minus 3% voltage regulation and low ripple and noise
- Silent running 80mm fan with 18dBA minimum
- Single PCI-E 8pin and dual PCI-E 6-Pin connectors support. Please Note: KIndly refer the User Manual before use.
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After successfully expanding and leading SFF(small form factor) cases and SFX PSU into the DIY (do it yourself) market, SilverStone engineers have continued their push for advancement in these categories by releasing a true upgrade-worthy small form factor power supply, the ST45SF-G. Despite being half the size of a regular ATX power supply, the ST45SF-G can still produce continuous power output of 450W. Its 80 PLUS Gold level efficiency is a great leap from the previous SFX best of 80 PLUS Bronze and the full modular cables is also the first of its kind for this form factor. To enable users to easily take advantage of this excellent SFX power supply, an adapter is included to convert ST45SF-G to mount in any ATX case in addition to ones that fit only SFX. For SFF users and for SilverStone, the ST45SF-G is more than just an upgrade, it is an important milestone for DIY desktop computer.
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I have this PSU in a Lian Li PC-TU100B, which previously housed the Silverstone ST45SF-G. My issue with that PSU is exactly what Silverstone describes in the "Product Description" of SX500-LG - the high-pitched noise. It was not loud, but was very noticeable and thus extremely annoying. The SX500-LG addresses that exact problem with a larger fan and a less aggressive fan curve.
Before purchase you need to make sure that it fits in your case because the SX500-LG is longer than a standard SFX PSU.
Other features that I like:
- Flexible cables, similar to the PP05-E set
- Native support for dual 6+2 pin PCIe power connectors
- The ATX bracket included has a better build quality
The small ITX Silverstone case I use with this unit seems to not allow enough air flow for this unit during idle which results in this power supply randomly shutting off to protect from heat. The tiny form factor combined with an overly hot i7-7700, and a 1080 Ti with OC results in my computer shutting off from simply viewing YouTube videos.
My answer to these random shut off has been to force the computer to pull more wattage in the background while doing small tasks. This means leaving a game or benchmark set to render scenes while I simply check my email so as to force the PSU fan to stay on and cool.
Although, I have had numerous moments where I would stop rendering in the background and the idle temps in the case would be waaaay to high and the PSU would instantly shut off as the case slowly cools down but the fan had already come to a dead stop because of the lack of wattage request.
Buy, but use GREAT air flow, or else.
On the plus side, I purchased mine from Amazon. You can't ask for a better company top deal with when it comes to issues like this. The return was processed and a new one shipped out. No muss, no fuss. If the replacement unit is silent I'll be happy... if not I'll report back here to let everyone know.
UPDATE - DEC 11, 2015
Found a forum where Silverstone was discussing the noise issue. As a result of the statements made I may discover a replacement PSU isn't going to fix the problem for my specific installation. I'll report back once I get the replacement fan installed. Hopefully I'll get lucky.
Here's what the Silverstone rep had to say:
"The SX500-LG's uses temperature based fan control... We believe the ticking noise that some owners of SX500-LG heard is the result of the ramp up in voltage applied to the fan by the temp control. This is more noticeable around the voltage required to start the fan."
UPDATE - DEC 13, 2015
Received the replacement 500W SFX-L from Amazon. This one is dead quiet... no noise of any kind! Sweet!
UPDATE - DEC 16, 2015
Bad news... Three days of perfect function... then it failed. Just up and died in the middle of making some updates. Swapped the replacement with a known good supply and everything was fine, put the bad one back in and nothing... Dead. Believe it or not this failure isn't much of a concern as I'm aware any electronic item can fail... TV's, Receivers, Blu-Ray players etc. Plus, I was unable to find anyone else who reported the same type of problem. I contact Amazon for another replacement.
UPDATE - DEC 20, 2015
Received the replacement from Amazon. Thank God I ordered from Amazon and not some other online outfit. From years of buying computer parts online I know any other company would not have been as customer oriented as Amazon. From experience, other computer parts company's would have been blaming me... or making me file a warranty claim with the manufacturer.
The good news... I'm up and running again. The not so good news... this one is not silent as the one that failed but it is a lot quieter than the first one. Where the first PSU made loud clicking sounds... this one is more of a quiet squeak. Sounds like a baby mouse in the unit... or a noise like dry fan bearings... squeak, squeak, squeak. However, the squeaking sound occurs when the fan is not spinning. Once the fan kicks in and starts spinning the squeaking stops. That said, I'm going to cut my loses and just keep this one. Amazon has been more than fair and has gone above and beyond in helping me with this PSU. Besides it's not the end of the world, I can't hear it once I get a couple feet away. As mentioned in my Dec 11th update, the noise issue is a known complaint among some customers but per the manufacturer the PSU is working as designed and depending on the application, you may or may not experience some noise.
NOTE: If you must have a Silverstone SFX-L form factor PSU... and can wait a week or two, Silverstone is getting ready to release a 750W SFX-L, and it's Platinum rated! Plus, the fan control circuit has been redesigned which should address the noise issue that seems to plague this unit.
It's perfect for use in the Silverstone Technology Milo Series MLO3B case see https://www.amazon.com/SilverStone-Technology-Aluminum-Micro-ATX-ML03B/dp/B004GGUAUE. The PSU fit perfectly in the case.
The only issue I had was the ATX power supply cable fell short by several inches and I had to buy a 10-inch Athena Power extension cable (CABLE-M204M204F), see https://www.amazon.com/Athena-Power-Extension-Conversion-24-pin/dp/B0032K3LNI
OTHER: Both the PSU and the Case are made by the same company and they should have foreseen a problem with a shorter ATX cable. Perhaps they could have included a short extension to be used as needed if they felt a need for a shorter cable.
The PSU is silent and performs very well. The MLO3 case itself has in my case 4 internal hard drives and is used in a 6-channel DVR.
PSU worked for about ~6 hours before my computer started to spontaneously shut down. Because the time until shutdown lessened between each boot until it was a matter of a few seconds, I'm guessing it was a thermal shutdown of the PSU. The fan is not supposed to spin until 30% load is reached, though the fan never spun. The fan was mounted to a venting grate on the front of the case, so it received more than adequate air supply. I didn't want to bother with a replacement considering the numerous other issues with this PSU reported by other purchasers.
This PSU has a lot of cables compared to other SFX PSUs. Even has headers for 4-pin to 3-pin for floppy drives...though I'm not sure why.
I had originally planned to go with 700W Silverstone over 600W Corsair because I wanted the extra headroom for two video cards, but I feel the risk of this PSU failing is much greater than the risk of overdrawing a 600W PSU. Corsair SF600 is treating me much better and I have had no issues.