Final Words & Conclusion

The Deepcool PX1200G is a very good product, especially since it’s the company’s debut in ATX 3.0 compatible units. The size is very compact (160 mm in length) for such a high 1200 W wattage, so you won’t need a bigger chassis to make it fit without a problem. The exterior looks fine (in all black), but the thing is that most of the chassis nowadays have a PSU shroud, which would hide this piece of art behind a metal. Still, there’s a white version available. You can find the fanless mode here, which you can turn off. The unit comes with a 10-year warranty. It’s an 80 Plus Gold certified PSU, and that’s a typical choice for even the high-end systems (maybe a bit more) from the consumer’s point of view (in terms of efficiency/price of the unit). The 1200 W variant offers a massive power output that should be enough for most users, even the most elaborate gaming setups, with a single graphics card in their system. A PC like the one used in this test (i9 13900K + Geforce RTX 4090) rarely exceeds 650-700 W power draw during typical usage (as this 4090 is limited to 450 W) 

On the quality side, all is very good, and the stability tests also went well. Load regulation is great for a mid-tier PSU, and there was no noticeable droop on the +5V and +12V rails. Ripple suppression is safely within tolerance. The 135 mm fan does well when it’s supposed to spin. It becomes audible close to 70-75% load, so there’s no reason to complain. You get typical accessories in the package, including mounting screws, a power cord, and a manual, but also velcro ties. There’s a 12+4 pin Gen 5 PCIe-compatible cable (capable of delivering 600 W).

A word about efficiency
Like with any other power supply, 50% of the maximum load is where the device is most efficient. The sweet spot of the Deepcool PX1200G 1200W (ATX 3.0) is close to 93% (at 230 Volts). In the case of this particular unit, half of the maximum wattage is 600 W. The average gaming PC with a single graphics card (at least those usually spotted in Steam hardware polls) won’t exceed this value under normal conditions. Don’t overestimate the savings (on your electricity bill) you can make by going from 80 Plus Bronze to even Titanium. You can assume that the build quality of more expensive PSUs will be higher, but the differences in efficiency are not that significant. So, summing it up, an 80 Plus Gold PSU like the Deepcool PX1200G is an attractive solution. The price is $239,99 for the 1200 W variant, which is quite appealing for a high-wattage PSU. 

Stability
There isn’t much to say about stability. The voltages hold, and this doesn’t change under higher loads. The 1200 W version should be enough for a single GPU (who uses the dual-GPU these days, without SLI support?) like an RTX 4080/4090, even with an Intel Core i9 13900K.

Aesthetics
This Deepcool PSU looks nice with its all-black cabling but has a flat design (which not all would like). The Deepcool PX1200G approach with modular cables lets you plug in only the necessary leads, improving your building’s looks. The PX1200G case looks okay; its finishing makes it look solid. Still, the PSU shroud you’ll usually have or the compartment for the power supply at the back of the motherboard tray wouldn’t help. A few chassis will allow the appropriate presentation. There’s an option to buy a white version.

Final words

The Deepcool PX1200G retails at $239,99, a reasonable and fair offer. You get a very solid performance (it’s possible thanks to the usage of the CWT platform) and ATX 3.0 compatibility. The unit has compact dimensions (160x150x82 mm). As for the power delivery itself, there’s no reason to worry. CWT has made the (CSZ) platform, and the results are more than satisfactory. The Deepcool PX1200G offers good acoustics (as it becomes audible only above 70% load) and solid build quality. According to the standards, the efficiency is like it should be for the 80 Plus Gold award. You also get a 10-year warranty, which you would expect in that price range. You also get the 12+4-pin PCIe 5.0 compatible cable for powering up to 600 W GPUs. This PSU (which is also available in the white version - which some users would love to have) deserves the “Bronze” award for its reasonable price, ATX 3.0 compatibility, and low noise under typical operating temperatures (with a load of up to 70%). A semi-passive mode is available, which works till around 40% (the 480 W load). It does what it should by providing a stable and efficient power output.

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