problems with my seasonic psu fan

[VeganJoy]

in the process of moving my parts from my meshify to a real case, ive had everything splayed out on my shelf. in doing so ive noticed that the fan on my prime ultra titanium 750w isnt working, and pressing the little hybrid switch doesnt help. it should automatically spin up the fan at 50% load so i put my 980ti of furmark pulling 360w and my 3600 on p95 pulling 90w, so probably about 500w for the system and it still didnt turn on. soooooo is there anything dumb ive missed or should i conclude that the fan is dead and return it? 

[svmlegacy]

3 minutes ago, VeganJoy said:

in the process of moving my parts from my meshify to a real case, ive had everything splayed out on my shelf. in doing so ive noticed that the fan on my prime ultra titanium 750w isnt working, and pressing the little hybrid switch doesnt help. it should automatically spin up the fan at 50% load so i put my 980ti of furmark pulling 360w and my 3600 on p95 pulling 90w, so probably about 500w for the system and it still didnt turn on. soooooo is there anything dumb ive missed or should i conclude that the fan is dead and return it? 

Titanium PSU's are very efficient. Even at 500W, you're looking at 25 W or so of dissipation. It might simply not be getting hot enough to turn on the fan.

[VeganJoy]

5 minutes ago, svmlegacy said:

Titanium PSU's are very efficient. Even at 500W, you're looking at 25 W or so of dissipation. It might simply not be getting hot enough to turn on the fan.

yeah thats why i figure i havent had any issues lol. its certainly a bit hot though and turning the hybrid mode on and off (off forces the fan to spin at all times, at least its supposed to) doesnt turn on the fan, whereas it does on my px 750 and prime ultra 550w. 

[auraofjason]

I have one, these PSUs actually don't turn on the fan until like near the peak rating, they're basically passive.

 

Source: http://www.jonnyguru.com/blog/2016/08/15/seasonic-prime-750-titanium-power-supply/3/

[Polaris20]

The fan should spin when it's not in hybrid mode.

Also, most psus spin a bit on bootup even when it's on hybrid mode (my Corsair does, but IDK about Seasonic, does your other Seasonics spin on bootup?).

 

so... that might be a fan problem.

[VeganJoy]

4 minutes ago, Polaris20 said:

The fan should spin when it's not in hybrid mode.

Also, most psus spin a bit on bootup even when it's on hybrid mode (my Corsair does, but IDK about Seasonic, does your other Seasonics spin on bootup?).

 

so... that might be a fan problem.

ah thats a good point, ill make sure to pay attention next time it posts

[auraofjason]

2 minutes ago, VeganJoy said:

ah thats a good point, ill make sure to pay attention next time it posts

Ya I see your problem now, mine spins for a second when I press the power button. If yours doesn't then your fan is might be broken.

[VeganJoy]

24 minutes ago, auraofjason said:

Ya I see your problem now, mine spins for a second when I press the power button. If yours doesn't then your fan is might be broken.

well it didnt spin during post sooooo yeah  

 

our sigs are pretty similar lol, for a while there i had a 9900k + 1080ti + maximus xi hero, same monitor too!

 

in the jonnyguru reviews i see that they rated the prime ultra revision lower than the original, oof

[auraofjason]

19 minutes ago, VeganJoy said:

well it didnt spin during post sooooo yeah  

 

our sigs are pretty similar lol, for a while there i had a 9900k + 1080ti + maximus xi hero, same monitor too!

 

in the jonnyguru reviews i see that they rated the prime ultra revision lower than the original, oof

Ah that sucks, kind of good news is it doesn't really need it though I guess

 

I actually managed to pick up a 3090 FE haha, the old titan served me well for over 4 years.

[Guest]

The fan should always spin when hybrid mode is off.

 

[VeganJoy]

3 minutes ago, jonnyGURU said:

The fan should always spin when hybrid mode is off.

so it seems, i shall see if i can return it. i dont fault the psu for the issue as its secondhand, but i was wondering what some alternatives to the seasonic prime series are. is there such thing as the "best" psu or do these premium titanium units all hit about the same level of quality?

[seon123]

13 minutes ago, VeganJoy said:

so it seems, i shall see if i can return it. i dont fault the psu for the issue as its secondhand, but i was wondering what some alternatives to the seasonic prime series are. is there such thing as the "best" psu or do these premium titanium units all hit about the same level of quality?

The 80+ rating is just for efficiency. It says nothing about how good the PSU is. The Prime Titanium uses a crappy fan and lacks multi rail OCP, and Seasonic units seem to have issues with GPU transients (so basically higher end GPUs). If you want a good PSU, then just get an actually good PSU, and ignore the efficiency.

[VeganJoy]

2 minutes ago, seon123 said:

The 80+ rating is just for efficiency. It says nothing about how good the PSU is. The Prime Titanium uses a crappy fan and lacks multi rail OCP, and Seasonic units seem to have issues with GPU transients (so basically higher end GPUs). If you want a good PSU, then just get an actually good PSU, and ignore the efficiency.

i know the rating is generally separate from quality, but i was under the impression that the prime/prime ultra were pretty good? what would be a better choice in the ~200 dollar range? 

[Ankerson]

1 hour ago, seon123 said:

The 80+ rating is just for efficiency. It says nothing about how good the PSU is. The Prime Titanium uses a crappy fan and lacks multi rail OCP, and Seasonic units seem to have issues with GPU transients (so basically higher end GPUs). If you want a good PSU, then just get an actually good PSU, and ignore the efficiency.

 

Ran my RTX 2080Ti FTW3 Ultra off my Prime Ultra Ti 750W for 1 1/2 years with no issues..... And the 1080Ti FTW3 before that..

 

And it's currently running the GTX 1080Ti FTW3 again...... Same, no issues.

 

Just saying..

 

The machine it's in now....

 

 

 

[artuc]

3 hours ago, seon123 said:

The Prime Titanium uses a crappy fan and lacks multi rail OCP, and Seasonic units seem to have issues with GPU transients (so basically higher end GPUs). If you want a good PSU, then just get an actually good PSU, and ignore the efficiency.

Ouch, Seasonic kick your dog or something ?

[none77]

As far as I know in seasonic the fan profile based on temp.

that why in the charts its wattage against sound/RPM in 25C.

 

[GoldenLag]

3 hours ago, artuc said:

Ouch, Seasonic kick your dog or something ?

I mean its all true.........

 

Well we know old focus and current Prime trip on high transiense GPUs. 

 

And current focus is suspects. 

 

While good at singlerail units. The fans arent great and sadly prime trips fairly easily on ampere. 

[VeganJoy]

7 hours ago, Ankerson said:

 

Ran my RTX 2080Ti FTW3 Ultra off my Prime Ultra Ti 750W for 1 1/2 years with no issues..... And the 1080Ti FTW3 before that..

 

And it's currently running the GTX 1080Ti FTW3 again...... Same, no issues.

 

Just saying..

 

The machine it's in now....

 

-snip

heyyy, howd you change the backplate led color? mine stayed solid white like the ftw3 logo

[Ankerson]

2 hours ago, VeganJoy said:

heyyy, howd you change the backplate led color? mine stayed solid white like the ftw3 logo

 

Changed it in the old software years ago.

 

X1 doesn't let us change it.