Is the Corsair RM750e sufficient to power both the 4080 Super and 7800X3D?
Is the Corsair RM750e sufficient to power both the 4080 Super and 7800X3D?
I just purchased a 4080 Super and an RM750e PSU, meeting the 750w requirement from the 4080 model. Yet online discussions suggest a bare minimum of 850w or even 1000w is necessary, with many recommending higher capacities. Some users who used a 750w PSU were criticized harshly. Am I in trouble? I don’t plan to upgrade my PC soon, so future-proofing isn’t important to me. I wasn’t trying to be cheap—I just thought it made sense to get more than what I needed.
really hard to compare a 3070 with a 4080 super, that's just founder models. The 3070 offers around 220w swings at 250w, while the 4080 pulls about 302 watts with power swings of 356 watts. It's realistic if you locate a model in the 750w range from a third-party source, then it should work well. Not every 4080 supers is identical in power use, so keep that in mind when checking specifications.
I never made a direct comparison. What I mentioned was using a 3070 with 650 watts, which was enough for what others claimed. Clearly, I understand the 4080 better, otherwise I wouldn’t have upgraded.
I’ve noticed many makers list wattage tables stating 750w is acceptable, so I’m not too concerned right now. If my PC begins failing, you’d better say “I told you so.”
I also tried a Corsair tool that suggested PSUs for my parts, recommending 750watts. I think since they understand their own power supplies, it makes sense.
750w is certainly enough for a 3070. The suggested power was 650w, but I always used the full capacity since it came with my NZXT prebuilt. I know prebuilts aren’t ideal, but at that time you couldn’t find a 3070 at its MSRP, so a prebuilt was the only option.