The Corsair RM1200x SHIFT and the DeepCool PX1200G are tied in this comparison, as each unit secures one spec victory while matching in five other categories. The Corsair RM1200x SHIFT holds a 3% advantage regarding its ATX version, which represents its most significant technical edge. Conversely, the DeepCool PX1200G offers a 35% advantage in MSRP, marking it as the more cost-effective option based on the provided specifications.

Choose the Corsair RM1200x SHIFT if you prioritize the latest ATX version standards for your build configuration. Alternatively, select the DeepCool PX1200G if you are looking to maximize value, as it provides a substantial 35% advantage in MSRP compared to the competitor. Since both power supplies offer identical performance across five key metrics, your decision should rely entirely on whether you value the specific ATX version or the lower cost.