Question Difference between G5, G6, and GR EVGA power supplies

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adriannlc

adriannlc

Jun 16, 2025
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Hi I was planning on getting an EVGA 750 or 650 power supply, but on amazon I see that there’s 3 options: G5, G6, and GT. I notice the GT is cheaper but is there a big difference between the three? Also which one is the best of the three
 
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Those are all models of different ages. The G5 came out in 2019, G6 in 2021, and GT in 2022. EVGA also doesn't make their own PSUs so each model has a different OEM. G5 OEM is FSB, G6 is SeaSonic, and GT is HEC. Of those the G6 and GT are the overall best, however, in 2025 it doesn't make sense to get ATX 2.5 PSUs instead of an ATX 3/3.1 PSU.
 
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jeremyj_83 said:
Those are all models of different ages. The G5 came out in 2019, G6 in 2021, and GT in 2022. EVGA also doesn't make their own PSUs so each model has a different OEM. G5 OEM is FSB, G6 is SeaSonic, and GT is HEC. Of those the G6 and GT are the overall best, however, in 2025 it doesn't make sense to get ATX 2.5 PSUs instead of an ATX 3/3.1 PSU.
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what psu do you recommend around the 650/750 wattage?
 
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novahayes12 said:
Hey!


Great question—EVGA’s G5, G6, and GT power supplies are all solid, but there are some key differences:


  • G6 is the newest and most refined. It has better internals, quieter operation, and tighter voltage regulation. It's built with higher-quality components and generally seen as the most premium option.
  • G5 is slightly older but still excellent—fully modular, 80+ Gold certified, and reliable.
  • GT is more budget-friendly. It’s also 80+ Gold and fully modular, but the build quality and fan noise control aren’t quite on par with the G5 or G6.

If you want the best of the three, go for the G6. If you’re on a tighter budget but still want solid performance, the GT is a good value.
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Note that none of them are ATX 3.X PSUs though. IMO it doesn't make sense to buy an ATX 2.53 PSU in 2025.
 
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You can also just buy the appropriate adapter cable. As long as the PSU has enough wiggle room to handle transients, all is well.

Main reason to avoid EVGA at this time might be lack of warranty support. They haven't completely shut down at this point. But there will come a time when they can do nothing for you in terms of a replacement.
 
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jeremyj_83 said:
There is a lot more than just a connector as the difference between 2.5 and 3.0. Not to mention most new models are all ATX 3.X anyways and IIRC ATX 3 requires 16AWG cables for the GPU instead of 18AWG that was normal on ATX 2.X.
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Well, yes, the 6 wires together needing to carry 675W means they have to be thicker. (9 amps per wire).

But triple 8-pin had 9 wires to do the same job. Many of the higher end PSUs also used 16 gauge, which would total up to 972W of maximum output, 780W with an 80% margin. Even a conversative 60W (5A) per wire would get you 540W. And that is closer to the spec that the 6-pin and 8-pin 18 gauge were built on.

That is why PSU reviews are important. Can't just go by the specifications.
 
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