SilverStone SX750 Platinum SFX Power Supply Review

The SilverStone SX750 is one of the strongest SFX power supplies.

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Silverstone SX750 Platinum
(Image: © Tom's Hardware)

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Performance Rating

(Image credit: Tom's Hardware)

The SX750's overall performance is not so high due to mediocre efficiency, especially at light loads, the loose load regulation on the minor rails and the not-so-great ripple suppression at 12V. To make this platform more competitive, SilverStone needs to ask for several changes which will boost performance. 

Noise Rating

The graph below depicts the cooling fan's average noise over the PSU's operating range, with an ambient temperature between 30 to 32 degrees Celsius (86 to 89.6 degrees Fahrenheit).

(Image credit: Tom's Hardware)

Noise output is increased, because of the aggressive fan speed profile and the DBB fan. 

Efficiency Rating

The following graph shows the PSU's average efficiency throughout its operating range with an ambient temperature close to 30 degrees Celsius.

(Image credit: Tom's Hardware)

The low-efficiency levels at light loads affect the average efficiency score, so the SX750 doesn't achieve a good place in this chart, staying below several Gold units. 

Power Factor Rating

The following graph shows the PSU's average power factor reading throughout its operating range with an ambient temperature close to 30 degrees Celsius.

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SilverStone SX750
(Image credit: Tom's Hardware)

PF Rating Charts

The APFC converter performs well, although we expected better results given its performance in the 10-110% load tests. 

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Aris Mpitziopoulos
Aris Mpitziopoulos
Contributing Editor

Aris Mpitziopoulos is a contributing editor at Tom's Hardware, covering PSUs.

3 Comments Comment from the forums
  • RYANFSS
    Is this review based on v1.1 model or 1.0?
    Reply
  • solrac0192
    RYANFSS said:
    Is this review based on v1.1 model or 1.0?
    This is for 1.1 Model based on the fifth image:
    https://cdn.mos.cms.futurecdn.net/tLnQZkRbv4r546DVRoo3ub-970-80.jpg.webp
    Reply
  • AiteeTaitii
    The review (and manufacturer website) says there are four 8-pin PCIe connectors. I wish I had read the review with enough attention at the time, as it says "only three sockets for EPS and PCIe cables".

    I bought the PSU (and have been very happy with it earlier) but now later got "lucky" in the GPU drought with a GPU that wants three PCIe power cables. A dumb non-native speaker like me didn't realize there's a difference between socket and connector, especially when manufacturer site only uses word "connector". CPU eats one, so two are left. Sure, I can "power" all the GPU sockets when using the split-ended PCIe cable. But still I feel a bit uncomfortable reading the small print from manufacturer manual about maximum power draw and voiding warranty: "dual PCIe 8pin connectors that exceed 375W total power draw (300W from two PICe 8 pin connectors + 75W from PCIe motherboard slot)".

    So far, things have worked well, GPU power draw stays just below 360W on high load. There are not many options for SFX-size PSU with so many PCIe sockets...
    Reply