ASRock SL-1200G 1200W ATX v3.1 PSU Review

Box & Bundle

The box features a photo of the product on its front, accompanied by the warranty and efficiency certification badges. For the technical specs, look at the back side. Inside, the PSU is covered by packing foam for optimal protection. There is also a white bag provided to store all cables.

Product Photos

The white paint job looks nice, making the exterior design appealing. The only issue is the restrictive fan grille due to its small perforations. A less restrictive grille could help lower the fan’s speed and have a positive effect on noise output. On the front side, besides the typical stuff, we also find a small switch for toggling on/off the fan stop feature. On the sides, there are high-voltage alert stickers to prevent you from opening the PSU, which is stupid if you are not trained in this stuff. Around the back is the modular panel, which we will check below.

The modular panel has twelve sockets, including two native 12V-2×6 headers.

Modular Cables
Description Cable Count Connector Count (Total) Gauge In Cable Capacitors
ATX connector 24 pin (590mm) 1 1 16-18AWG No
4+4 pin EPS12V (640mm) 1 1 18AWG No
8-pin EPS12V (640mm) 1 1 18AWG No
6+2 pin PCIe (650mm) 3 3 16AWG No
12+4 pin PCIe (645mm) (600W) 2 2 16-24AWG No
SATA (450mm+120mm+120mm+120mm) 2 8 18AWG No
SATA (445mm) / 4-pin Molex (120mm+110mm+110mm) 1 1 / 3 18AWG No

All cables are flat and consist of white, stealthy (within the same color chassis) gauges. Cable length is sufficient for the majority of big chassis. It would be better, though, if the 24-pin connector were installed onto a 650mm long cable and the EPS cables reached 700mm. I would also like to see 16AWG gauges in the ATX and EPS connectors, but ASRock opted for the standard 18AWG. Thicker gauges have lower resistance, which makes a difference at high loads, such as those a 1200W PSU can deliver.

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6 thoughts on “ASRock SL-1200G 1200W ATX v3.1 PSU Review

  1. Aris would u update Gamemax Lioncore 1000/1200P series, i’ve seen they just had cybenetics platinum ratings

    1. I will review them at some point. Their OEM is doing some serious effort to improve, and I try to help them (as I do with all the other OEMs who send me products for testing)

  2. Love your work but could you in future articles explain every test with simple explanation? I always forget what’s what and have to go to your Tom’s HW reviews to check 😀
    For example from the Hold up time segment there: “Put simply; hold-up time is the amount of time that the system can continue to run without shutting down or rebooting during a power interruption.”

    If you could mention briefly at the beginning of each test that would be great. If it’s not hassle to paste it every time of course 🙂

    I’m still rocking a 2019 Seasonic Focus GX which I picked based on Jonny Guru’s review and I’m afraid that it will die soon so started my research and I’m glad to see that there is a new Guru in the PSU review space so thank you for your work.
    Also, your reviews now made me hesitant to buy Seasonic when the time is here lol hopefully they are still reliable even though they are now midrange in these tests

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