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SilverStone

SilverStone Technology HELA 1200R Platinum ATX 3.0 / PCIe Gen 5 1200W Fully Modular Power Supply, SST-HA1200R-PM

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Availability: 14 left in stock
Fulfilled by Amazon
Arrives Monday, Oct 19
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Style: Power Supply


Features

  • Equipped with Gen5 12VHPWR PCIe connector, meeting Intel ATX 3.0 specification standard
  • Cybenetics Platinum efficiency certification
  • 24/7 continuous power output with 50Coperating temperature
  • Ultra silent 135mm FDB fan with semi-fanless function
  • All Japanese electrolytic capacitors

Description

With the introduction of ATX 3.0 standard, SilverStone is releasing a multitude of high wattage premium PSUs in the HELA series line. HELA 850R Platinum was the first ever ATX 3.0 compliant PSU to release, now SilverStone is releasing 2 higher wattages: 1000W – HELA 1000R Platinum, and 1200W – HELA 1200R Platinum to meet the ever-increasing power consumption of the latest released of CPU and GPUs. HA1200R-PM is Cybenetics Platinum certified with strict voltage regulation and capable of providing 24/7 50°C continuous power output. It is equipped with one 600W 12VHPWR connector to reliably and efficiently support high-end systems with PCIe Gen5 graphics cards and beyond.

Model Name: HELA 1200R Platinum


Brand: SilverStone


Compatible Devices: Server & Desktop


Connector Type: ATX, PCI Express


Output Wattage: 1200 watts


Form Factor: ATX


Wattage: 1200 watts


Cooling Method: Air


Item dimensions L x W x H: 5.91 x 5.91 x 3.39 inches


Item Weight: 3.69 kg


Compatible Devices: Server & Desktop


Connector Type Used on Cable: ATX, PCI Express


Output Wattage: 1200 watts


Form Factor: ATX


Wattage: 1200 watts


Cooling Method: Air


Power Supply Design: Full Modular


Number of Fans: 1


Fan Size: 13.5 centimeters


Maximum Input Voltage: 107 volts


Minimum Input Voltage: 100 volts


Upper Temperature Rating: 50 °C


System Bus Connector Type: 12VHPWR


Item Dimensions: 5.91 x 5.91 x 3.39 inches


Item Weight: 3.69 kg


Model Name: HELA 1200R Platinum


Brand: SilverStone


Number of Items: 1


Unit Count: 1 Count


Manufacturer: SilverStone Technology


UPC: 844761025564


Model Number: SST-AX1200MCPT-A


Mfr Part Number: SST-AX1200MCPT-A


Warranty Description: 5 year limited


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Oct 19

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • One of the safest PSU's that you can buy at any price point.
Style: Power Supply
Review Image by Brandon Wirtz
I used this in my main system just over two years ago from the time I write this review. It has worked flawlessly the entire time, making no noise. The PSU has dealt with several power surges and more than a little dirty electricity, and it has kept every part perfectly safe, exactly as it is made to do. It comes with all the cables you could need for a system that might use 1200 W, and being fully modular kept those cables to a minimum. Overall excellent product, and well worth the money if you care about keeping your components safe. The color is black and the cables match, making this a poor choice in a white build for aesthetic reasons. However, I have it in my Oreo build and it fits perfectly. ... show more
Reviewed in the United States on January 9, 2026 by Brandon Wirtz
    • Outstanding P/S and customer support - couldn't be happier!
Style: Power Supply
Once I was able to get a 4090 for MSRP (about a month or so after they were released) I grabbed one and purchased this power supply. SilverStone was one of the first on Amazon to have a platinum rated power supply with 12VHPWR in the 1KW range. Since building my system I've disassembled it several times for M.2 SSD upgrades and a case upgrade. Despite unplugging and re-plugging the 12VHPWR connector each time, I've never had the dreaded melting power connector issue to this day - and I play some pretty demanding games for several hours per day almost every single day, not to mention rendering video and other reasonably high-load activities on occasion. I've also experienced no noise from the power supply, even under the heaviest load I've been able to produce with my current hardware. When I did the case upgrade, I stupidly broke the locking latch off the connector when routing the cable and SilverStone sent me a new cable right away - no hassle at all. As I write this review, you can now get their 12VHPWR cable with a 90-degree connector right here on Amazon. Based on my experience with this power supply and the company's excellent support, SilverStone continues to impress me not only with their quality hardware, but also their customer focused thinking and service. When I build my next system, the power supply will be from SilverStone. ... show more
Reviewed in the United States on April 22, 2024 by Bruce
    • Exploded and support won't help
Style: Power Supply
Review Image by David Jimenez
Review Image by David Jimenez
It exploded after 2 years and damaged my case. Almost burned down my house if I wasn't here to unplug it when it started bursting sparks out of it. Tried to contact Silverstone support but they keep sending me to Amazon where I can't return it because it's been 2 years since I bought it.
Reviewed in the United States on April 13, 2026 by David Jimenez
    • High performance at a good price
Style: Power Supply
Well packaged. Quiet in my installation even when under load with a MSI 4090 RTX Gaming X Trio and Intel i9-13900. Fully modular and includes necessary cables including a 600W GPU power cable for the 4090. Motherboard power cable has a mysteriously tight fit in the PSU and the mobo. Time will tell but so far so good. Hats off to Silverstone (and Channel Well Technology, the OEM) for a nice PSU at the latest spec. Update after 4 months: still going strong with no issues. Quiet. It gets HEAVY usage on my son's gaming rig. No complaints yet. Update after 3 years: still running flawlessly. Zero complaints. ... show more
Reviewed in the United States on January 19, 2023 by JayBee
    • Good overall power supply, platinum efficiency and fixed computer shutdown issue.
Style: Power Supply
Review Image by David Hoffman
Bought this PSU to replace a Seasonic PSU that was having issues with my overclocked ryzen 5950x and sapphire nitro+ 7900xtx, it would power off randomly in a game due to wattage. I am pulling on avg 680w - 730w and this Silverstone 1200r platinum seems to be a good fit, the random shutdowns went away. Its small form factor, but seems to do the job. I like how it is platinum and I am just pulling in the range for the most efficiency, while most atx 3.0 PSU out now are gold. With the prices of electricity going up and the power requirement from computers, you want to do the best to save that money. It did pass the very strenuous Cybernetics power supply test, 12v rail is very strong. Only issue was power hold up time, ATX 3.0 supposed to be 17ms and it was 15ms. That shouldn't be an issue unless you in a place with power brown outs. I am usually a very high end PC parts purchaser, 5950x....7900xtx seasonic titanium. But I decided to give this power supply a shot and it did not disappointment. As people have mentioned the cabling is stiff and lazy for them to not have pure 8pin pcie cables, but decided to add an extra 8pin to each, so its just a bit more to hide, not bad. Sata cables are very long, so thats nice. Warranty only 5 years instead of high end PSU industry average of 10yr. I'd give this a 4.5 outa 5 star if I could, but went to 4 stars as that was the closet option as what I felt this unit from Silverstone deserves. ... show more
Reviewed in the United States on January 30, 2023 by David Hoffman
    • Great ATX 3 power supply for RTX 4080
Style: Power Supply
I purchased this as an upgrade from my Corsair 1000W power supply as I had upgraded to an RTX 4080. It was much lighter than I was expecting, however, as it is a silverstone, it is providing the quality that I expected. It has given me no issues, and has been very quiet along with providing more than sufficient power for my 4080. Also, because it is an ATX 3.0 power supply, it had the new high power connector, which the 4080 required natively. ... show more
Reviewed in the United States on April 14, 2023 by Nathan
    • Great Power Supply for GTX 4000 Series!
Style: Power Supply
The 1200p and 1300p are both Cybenetics certified! Please check the latest data base. Initially there was some delay in certification process, but now you can find the full ATX 3.0 report on Cybenetics website. This PSU power RTX 4090 + 7950X and Asus x670e Hero. Hela is very quite and can support any transient spikes. ... show more
Reviewed in the United States on January 5, 2023 by Z
    • Good ATX 3.0 PSU
Style: Power Supply
Excellent power supply that is practically silent. The included cables are a bit stiff. They are standard quality (not mesh) except for the new 12vhpwr cable. I wish all the cables were mesh as it would make it nicer for panel glass cases.
Reviewed in the United States on December 31, 2022 by TAC monkey

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