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New PSU or keep old one?

lyon811
By lyon811
in Power Supplies
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Hi, I'm in the middle of building a new PC and just want yall's opinion on it. I got rtx 3080 and a 5800x. My PSU that I plan to use is the same one I've had since 2016, a EVGA supernova nex 750b. I've had no problems with it, and it's this would be the third system it's been in. I know that 750 watts is good enough for a 3080 and a 5800x, with room for overclocking, but that fact that's its almost 5 years old worries me just a bit. I've read that old PSU's, if made by a reliable manfuacter, can last for 10+ years. IDK if I should just go ahead and buy a 850 watt or just stick with this one. Let me know what yall think.

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I would stick with that psu, If it fails, you can always buy a new one

AMD blackout rig

 

cpu: ryzen 5 3600 @4.4ghz @1.35v

gpu: rx5700xt 2200mhz

ram: vengeance lpx c15 3200mhz

mobo: gigabyte b550 auros pro 

psu: cooler master mwe 650w

case: masterbox mbx520

fans:Noctua industrial 3000rpm x6

 

 

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I wouldn't trust it. If it were a higher-end unit, it'd be fine, but it's group-regulated and therefore pretty bad all around. Reviews also mention the rail distribution being pretty weird, which would cast doubt on its ability to run reliably near its actual capacity.

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12 hours ago, lyon811 said:

Hi, I'm in the middle of building a new PC and just want yall's opinion on it. I got rtx 3080 and a 5800x. My PSU that I plan to use is the same one I've had since 2016, a EVGA supernova nex 750b. I've had no problems with it, and it's this would be the third system it's been in. I know that 750 watts is good enough for a 3080 and a 5800x, with room for overclocking, but that fact that's its almost 5 years old worries me just a bit. I've read that old PSU's, if made by a reliable manfuacter, can last for 10+ years. IDK if I should just go ahead and buy a 850 watt or just stick with this one. Let me know what yall think.

 

NO, replace the PSU with a better quality unit like a Corsair RM or RMX, EVGA P2, G3 etc.

 

 

i9 9900K @ 5.0 GHz, NH D15, 32 GB DDR4 3200 GSKILL Trident Z RGB, AORUS Z390 MASTER, EVGA RTX 3080 FTW3 Ultra, Samsung 970 EVO Plus 500GB, Samsung 860 EVO 1TB, Samsung 860 EVO 500GB, ASUS ROG Swift PG279Q 27", Steel Series APEX PRO, Logitech Gaming Pro Mouse, CM Master Case 5, Corsair AXI 1600W Titanium. 

 

i7 8086K, AORUS Z370 Gaming 5, 16GB GSKILL RJV DDR4 3200, EVGA 2080TI FTW3 Ultra, Samsung 970 EVO 250GB, (2)SAMSUNG 860 EVO 500 GB, Acer Predator XB1 XB271HU, Corsair HXI 850W.

 

i7 8700K, AORUS Z370 Ultra Gaming, 16GB DDR4 3000, EVGA 1080Ti FTW3 Ultra, Samsung 960 EVO 250GB, Corsair HX 850W.

 

 

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Normally when the PSU is good, at least good by 2016 standards, the PSU should not fry your system, that usually only happens with garbage PSUs.

 

A decent quality PSU will instead just shut down your computer. Usually this happens after tripping the overcurrent protection with the RTX 3080.

Which means you can at least try to run that RTX 3080 with your old PSU.

 

That being said I would still buy a new high quality PSU. Consult the PSU tier list and get something from Tier A with enough wattage.

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