PSUs

Cooler Master X Silent MAX Platinum 1300W: The Power Of Silence!

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Load Regulation

Test 12V 5V 3.3V 5VSB DC/AC (Watts) Efficiency Fan Speed (RPM) PSU Noise (dB[A]) Temps (In/Out) PF/AC Volts
10% 9.029A 1.983A 1.959A 0.991A 130.012 86.078% 0 <6.0 47.23°C 0.981
12.007V 5.045V 3.369V 5.047V 151.048 40.47°C 115.11V
20% 19.087A 2.978A 2.946A 1.192A 259.975 90.871% 0 <6.0 47.76°C 0.993
12.002V 5.038V 3.361V 5.033V 286.072 40.85°C 115.07V
30% 29.480A 3.478A 3.444A 1.395A 389.714 92.087% 0 <6.0 49.1°C 0.995
11.996V 5.033V 3.354V 5.02V 423.222 41.4°C 115.03V
40% 39.901A 3.979A 3.945A 1.598A 519.683 92.293% 0 <6.0 50.31°C 0.996
11.992V 5.027V 3.346V 5.008V 563.082 41.65°C 115V
50% 49.998A 4.98A 4.943A 1.802A 649.822 92.086% 0 <6.0 53.18°C 0.997
11.987V 5.021V 3.338V 4.994V 705.594 42.46°C 114.96V
60% 60.108A 5.984A 5.946A 2A 779.932 91.608% 462 <6.0 42.61°C 0.997
11.981V 5.015V 3.33V 4.981V 851.419 54.4°C 114.91V
70% 70.248A 6.993A 6.957A 2.215A 910.064 90.859% 530 <6.0 43.19°C 0.997
11.972V 5.007V 3.321V 4.967V 1001.627 55.66°C 114.87V
80% 80.387A 8.002A 7.97A 2.321A 1039.671 90.071% 677 7.5 43.72°C 0.998
11.964V 4.999V 3.312V 4.955V 1154.191 56.85°C 114.84V
90% 90.942A 8.514A 8.474A 2.428A 1169.94 89.356% 812 12.9 44.71°C 0.997
11.957V 4.992V 3.303V 4.943V 1309.243 58.49°C 114.79V
100% 101.245A 9.027A 9.012A 3.051A 1299.573 88.606% 890 15.7 45.39°C 0.997
11.950V 4.985V 3.295V 4.917V 1466.88 60.18°C 114.73V
110% 111.486A 10.044A 10.132A 3.059A 1429.785 87.791% 1029 20.5 46.44°C 0.997
11.943V 4.978V 3.286V 4.904V 1628.505 62.02°C 114.69V
CL1 0.117A 14.358A 14.21A 0A 121.297 82.937% 524 <6.0 40.66°C 0.978
12.005V 5.028V 3.356V 5.063V 146.282 54.58°C 115.1V
CL2 0.116A 19.875A 0A 0A 101.394 81.267% 456 <6.0 40.41°C 0.973
12.012V 5.031V 3.375V 5.071V 124.727 51.89°C 115.1V
CL3 0.116A 0A 19.651A 0A 67.385 75.396% 455 <6.0 41.24°C 0.959
12.008V 5.051V 3.358V 5.067V 89.374 49.96°C 115.11V
CL4 108.702A 0A 0A 0A 1299.992 89.025% 677 7.5 45.89°C 0.997
11.959V 5.008V 3.313V 5.002V 1460.197 58.49°C 114.74V

Load regulation is tight at 12V but loose on the minor rails. CM needs to beef up the VRM converters on this platform!

Ripple Suppression

Test 12V 5V 3.3V 5VSB Pass/Fail
10% Load 8.6 mV 11.0 mV 6.4 mV 5.2 mV Pass
20% Load 9.3 mV 11.4 mV 6.6 mV 5.7 mV Pass
30% Load 10.2 mV 12.0 mV 7.0 mV 5.9 mV Pass
40% Load 12.0 mV 11.6 mV 6.9 mV 6.5 mV Pass
50% Load 15.2 mV 11.7 mV 7.6 mV 7.5 mV Pass
60% Load 17.4 mV 11.7 mV 7.8 mV 10.6 mV Pass
70% Load 20.4 mV 12.9 mV 8.7 mV 12.4 mV Pass
80% Load 22.5 mV 13.2 mV 10.1 mV 12.3 mV Pass
90% Load 24.3 mV 13.9 mV 11.2 mV 14.1 mV Pass
100% Load 36.7 mV 15.8 mV 11.0 mV 16.5 mV Pass
110% Load 41.0 mV 16.4 mV 12.8 mV 16.7 mV Pass
Crossload 1 12.6 mV 16.9 mV 12.3 mV 22.6 mV Pass
Crossload 2 8.6 mV 14.3 mV 6.0 mV 16.2 mV Pass
Crossload 3 8.1 mV 9.6 mV 11.9 mV 16.7 mV Pass
Crossload 4 36.9 mV 12.7 mV 7.9 mV 34.7 mV Pass

Ripple suppression is good on the minor rails and decent at 12V. However, it would be better if CM restricted ripple at 12V, at full and 110% loads.

Pages:
  1. Prologue & Technical specifications
  2. Box & Bundle, Product Photos & Cables
  3. Part Analysis
  4. Load Regulation & Ripple Suppression
  5. Transient Response
  6. Hold-Up time, Inrush Current & PSU Timings
  1. Efficiency, Power Factor, 5VSB & Vampire Power
  2. Protection Features
  3. Noise Output
  4. Overall Performance
  5. Epilogue
Pages: 1 2 3 4 5 6 7 8 9 10 11
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10 thoughts on “Cooler Master X Silent MAX Platinum 1300W: The Power Of Silence!”

  1. “A lower ripple at 12V under full load would be highly welcome, but I want a better transient response on this rail at high loads. To achieve this, more capacitance is required, and polymer caps don’t cut it there, so you need to use electrolytic ones, which are not as tolerant to high temperatures. Given that CM wants to keep the fan’s speed low, this could lead to problems. This is a design challenge that CM’s engineers have to handle.”

    Why does CM have to do this? Perhaps you should demand that the standards be more strict, as this unit meets them, correct? If the transient response fails the standard then I can understand the demand. Otherwise, it’s an aspiration until some other company comes out with a PSU that is this quiet with this high a wattage.

    Reply

  2. I don’t agree with the warranty criticism. It is stated definitively without proof:

    “Such a long warranty period will eventually create problems for both the brand and consumers”

    Will? How about “might”? It’s actually refreshing to see a company stand behind their product. 15 years is not an unreasonable lifespan for a PSU.

    Reply

  3. The price of $459 MSRP (inc. VAT) is just too much for most PC builders; at least the Cooler Master X Silent MAX Platinum 1300 has a 6% deviation in 200% load ATX v3.1 transient response tests. Unfortunately, the transient response is not good at 120/160/180% load tests, and the ripple suppression is not very impressive on the 12V rail (full/100% load), especially when considering the high price.
    On the other hand, the XPG CyberCore II 1300 and Seasonic Prime TX-1300 are still the best-performing 1300W PSUs in the ATX v3.1 transient response test (200% load) on the 12V rail.
    The problem with the Seasonic Prime TX-1300 (€ 425) is its ridicolous price in the EU when compared to the XPG CyberCore II 1300 (€ 230).

    Not my choice for a 1300W PSU.

    Reply

    1. Disagree with Seasonic. In 2021-2022 i remember quiet a few articles on techpowerup, tom’s hardware, reddit etc about issues with their PSU (and bad warranty service). Be careful with these brands like Noctua promising eternity* We have seen recently Asus, EK…

      Reply

      1. Seasonic prime is the only power supply I’ve had problems with, first it would turn on occasionally then it even stopped turning on. And I’m not the only one. The CWT platforms are much more reliable

        Reply

    2. This coolermaster psu is an excellent unit. You would be silly to not give it a solid consideration when it comes time to purchase.

      Reply

      1. You’re kidding me for $459 MSRP?

        Not affordable
        Protection features need tuning for larger differences in the triggering points (12V OCP & OPP) between hot and cold conditions
        12V rail’s transient response needs to get better in ATX v3.1 test scenarios
        Efficiency needs boosting at light loads
        The 3.3V rail needs tighter load regulation
        Increased vampire power
        Ideally, it should have an IEC C20 input/socket
        Such an extended warranty period will eventually create problems for both the brand and consumers

        Reply

        1. It seems reasonable to me, considering how quiet it is and because the warranty is so long.

          I’d rather pay more for quality versus less for something that won’t last as long and which increases noise pollution.

          Reply

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