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Seasonic PRIME Ultra 650W 80+ Titanium Power Supply $119.99

$119.99
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Newegg [newegg.com] has the Seasonic PRIME Ultra 650W 80+ Titanium Full Modular Power Supply (SSR-650TR) on sale for $119.99 after $20.00 mail in rebate.

Specs
  • ATX12V / EPS12V
  • Full Modular
  • 80 PLUS TITANIUM Certified
  • 100 - 240 V 50/60 Hz
  • +3.3V@20A, +5V@20A, +12V@54A, -12V@0.3A, +5VSB@3A

https://www.newegg.com/seasonic-p...6817151198
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#2
This is pretty much the best power supply you can buy if you care about energy efficiency. It is enough power for just about any PC, unless you have multiple GPUs and a HEDT processor.
And, this is a good price.
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#3
Looks like this will run fanless up to about 200w. Good if you want a system that stays silent under all but extreme loads (though the energy efficiency also drops off a lot under 200w, so a bit of a trade off there)
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yeet
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#4
Great PSU and solid price but this is waaaay overkill for the vast majority of users.

For those who will ask if they should build with this PSU: if you don't know exactly why you need this then, no, you almost certainly don't need a PSU of this caliber. There will be 80+ gold options for at least $40 less that will be perfectly fine for most systems.

That being said, if you're in need of something in this tier I wouldn't hesitate, especially since PSU prices have shot you so much this past year.
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#5
Quote from jomeyq
:
Looks like this will run fanless up to about 200w. Good if you want a system that stays silent under all but extreme loads (though the energy efficiency also drops off a lot under 200w, so a bit of a trade off there)
https://en.wikipedia.org/wiki/80_Plus#Efficiency_level_certifications​ [wikipedia.org]

Only 80+ Titanium power supplies have an efficiency target for 10% load - must be >=90% efficient. Too bad they don't sell anything under 650W. I'd like a 500/550W Titanium - trying to hit that 50% load sweet spot.
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#6
Quote from itvn91
:
Enermax vs Seasonic. Are you insane?
Then there's this nod
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#7
I bought and still own this PSU.

I used to use a UPS with my computer and this PSU made a loud whining noise when running off the UPS battery. I don't know what the cause is. I have stopped using the UPS and no noise.

This is the UPS I used:
https://www.amazon.com/gp/aw/d/B000OFXKFI?

Another odd issue with my computer (which I am not sure is due to the PSU) is that I own an EVGA 1070 Ti Ultra Silent GPU that has coil whine with this PSU. I RMA'd the card with EVGA and the replacement card also coil whines. It did not coil whine when I had that UPS. I do not own another PSU to test if it's just a bad GPU SKU in general or another factor. I have flipped the PSU up and down to see if perhaps heat in PSU was causing it but no difference. I have also used the hybrid mode and did not experience a difference. I've got PSUs and sinewave UPSs on deal alerts so I could continue to monitor which component is causing the coil whine.

Here is my complete pc part list if anyone is curious:
https://pcpartpicker.com/list/hz2Fvn
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#8
Quote from jomeyq
:
Looks like this will run fanless up to about 200w. Good if you want a system that stays silent under all but extreme loads (though the energy efficiency also drops off a lot under 200w, so a bit of a trade off there)
It only turns fan off when in Hybrid mode. The fan is running at all times in my PC, hybrid mode is off. PSU face up.
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yeet
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#9
Quote from UncleRunkle
:
Platinum vs Titanium. Titanium rated is better. Also power isn't everything; efficiency is more important in my book.
Isn't it less than 4% difference in efficiency? I thought that, on average, titanium and platinum were identical at 100% load, were 96% vs. 94% efficient at 50% load, and 94% vs 90% efficient at 20% load. Also, pretty sure golds are about 2-4% less efficient than platinums on average.

Out of curiosity, what is your use case where splitting hairs like this for efficiency matters? Are you just an enthusiast or does it actually have an impact on your use?
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#10
Quote from Firenova
:
Isn't it less than 4% difference in efficiency? I thought that, on average, titanium and platinum were identical at 100% load, were 96% vs. 94% efficient at 50% load, and 94% vs 90% efficient at 20% load. Also, pretty sure golds are about 2-4% less efficient than platinums on average.

Out of curiosity, what is your use case where splitting hairs like this for efficiency matters? Are you just an enthusiast or does it actually have an impact on your use?

we have 5 office computers running 24 hours and gone with the platinum due the 2 % titanium gives you isn't worth it, i just posted it as an option if somebody wanna safe a couple more bucks and do not need the 2 extra % from titanium. Wave
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#11
Quote from Firenova
:
Isn't it less than 4% difference in efficiency? I thought that, on average, titanium and platinum were identical at 100% load, were 96% vs. 94% efficient at 50% load, and 94% vs 90% efficient at 20% load. Also, pretty sure golds are about 2-4% less efficient than platinums on average.

Out of curiosity, what is your use case where splitting hairs like this for efficiency matters? Are you just an enthusiast or does it actually have an impact on your use?
A little bit of both. Yes, I'm a power supply snob/enthusiast. Don't really know why anymore - it used be for more stable overclocks, then it was to ensure my many hard drives had the most stable 12v rail possible. (0 hard drive failures since 2011 with 40 or so drives - bought at different time of course!) Now, I just want to save on my power bill and running my machine 24/7 at low loads will "save" me about $8.64 a year by switching from Gold to Titanium. Worth upgrading? No, but it makes me feel better plus I can probably sell the old one to lessen the cost. Smilie
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Last edited by UncleRunkle January 24, 2020 at 02:51 PM. Reason: put save in quotes :D
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#12
Quote from Firenova
:
Isn't it less than 4% difference in efficiency? I thought that, on average, titanium and platinum were identical at 100% load, were 96% vs. 94% efficient at 50% load, and 94% vs 90% efficient at 20% load. Also, pretty sure golds are about 2-4% less efficient than platinums on average.

Out of curiosity, what is your use case where splitting hairs like this for efficiency matters? Are you just an enthusiast or does it actually have an impact on your use?
Lol it's a status thing you know like buying iPhone's and Macs or sniffing your farts from a wine glass.
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#13
Quote from Firenova
:
don't need a PSU of this caliber. There will be 80+ gold options for at least $40 less that will be perfectly fine for most systems.
I disagree. 80+ gold is perfectly fine for ALL systems Smilie
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#14
Quote from SeikenDensetsu
:
I bought and still own this PSU.

I used to use a UPS with my computer and this PSU made a loud whining noise when running off the UPS battery. I don't know what the cause is. I have stopped using the UPS and no noise.

This is the UPS I used:
https://www.amazon.com/gp/aw/d/B000OFXKFI?

Another odd issue with my computer (which I am not sure is due to the PSU) is that I own an EVGA 1070 Ti Ultra Silent GPU that has coil whine with this PSU. I RMA'd the card with EVGA and the replacement card also coil whines. It did not coil whine when I had that UPS. I do not own another PSU to test if it's just a bad GPU SKU in general or another factor. I have flipped the PSU up and down to see if perhaps heat in PSU was causing it but no difference. I have also used the hybrid mode and did not experience a difference. I've got PSUs and sinewave UPSs on deal alerts so I could continue to monitor which component is causing the coil whine.

Here is my complete pc part list if anyone is curious:
https://pcpartpicker.com/list/hz2Fvn
Maybe this PSU doesn't like the simulated sine wave of that UPS.
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#15
Quote from SeikenDensetsu
:
I bought and still own this PSU.

I used to use a UPS with my computer and this PSU made a loud whining noise when running off the UPS battery. I don't know what the cause is. I have stopped using the UPS and no noise.

This is the UPS I used:
https://www.amazon.com/gp/aw/d/B000OFXKFI?

Another odd issue with my computer (which I am not sure is due to the PSU) is that I own an EVGA 1070 Ti Ultra Silent GPU that has coil whine with this PSU. I RMA'd the card with EVGA and the replacement card also coil whines. It did not coil whine when I had that UPS. I do not own another PSU to test if it's just a bad GPU SKU in general or another factor. I have flipped the PSU up and down to see if perhaps heat in PSU was causing it but no difference. I have also used the hybrid mode and did not experience a difference. I've got PSUs and sinewave UPSs on deal alerts so I could continue to monitor which component is causing the coil whine.

Here is my complete pc part list if anyone is curious:
https://pcpartpicker.com/list/hz2Fvn
Found this on quick search.... looks like since 80+ devices already have Active PFC, they don't work well with Simulated sine wave UPSs. Need Pure sine UPS.


https://forums.tomshardware.com/t...e.3269524/
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Last edited by -tej January 24, 2020 at 05:12 PM.
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