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expired Posted by GoldEagle7 • Apr 15, 2023
expired Posted by GoldEagle7 • Apr 15, 2023

Corsair SF750 Platinum SFX PSU w/Promo Code $164.99 at Newegg

$165

$185

10% off
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Model: Corsair SF Series SF750 750W 80 PLUS Platinum Modular Power Supply

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Apr 16, 2023
804 Posts
Joined May 2006
Apr 16, 2023
hbasavar
Apr 16, 2023
804 Posts
Pretty penny... but can't comment on its quality.

Here is a link to refurbished ones where you could get a 750 Watts for as low as $75 for people who are interested.

Refurbished [corsair.com]
1
Apr 16, 2023
208 Posts
Joined May 2015
Apr 16, 2023
kasbarsbeard
Apr 16, 2023
208 Posts
This is always $165.....this is just an inflated price so they can put it on "sale" to make you think you're getting a deal. FTC has regulations against this but doesn't enforce it ever. If you need a good sfx psu this is good, just don't think you're getting a deal.
Apr 16, 2023
830 Posts
Joined Feb 2017
Apr 16, 2023
3JABO
Apr 16, 2023
830 Posts
Quote from hbasavar :
Pretty penny... but can't comment on its quality.

Here is a link to refurbished ones where you could get a 750 Watts for as low as $75 for people who are interested.

Refurbished [corsair.com]
The refurbished one of this exact model is the same price as the non refurbished. https://www.corsair.com/us/en/Cat...0186-NA/RF
Apr 16, 2023
160 Posts
Joined Feb 2013
Apr 16, 2023
dirtyb
Apr 16, 2023
160 Posts
I think this is about the regular price. I got this for $130 after MIR at the end of last year.
Apr 16, 2023
1,495 Posts
Joined Oct 2007
Apr 16, 2023
bucdan
Apr 16, 2023
1,495 Posts
Amazon price matched with a coupon. I actually just bought it from Amazon a few hours ago.
Apr 16, 2023
4,757 Posts
Joined Dec 2005
Apr 16, 2023
mrmochi
Apr 16, 2023
4,757 Posts
A fool and his money.....
2
Apr 16, 2023
653 Posts
Joined Jul 2017
Apr 16, 2023
Ozzforester
Apr 16, 2023
653 Posts
To call a 750w psu a deal it should be below $80 ok this is platinum psu but still at an inflated price
1

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Original Poster
Apr 16, 2023
1,102 Posts
Joined Aug 2018
Apr 16, 2023
GoldEagle7
Original Poster
Apr 16, 2023
1,102 Posts
Quote from Ozzforester :
To call a 750w psu a deal it should be below $80 ok this is platinum psu but still at an inflated price
This is the best SFF PSU right now, until the Loki Sfx psu are sold in the USA. These can handle transient spikes of up to 900 or a bit more.
Apr 17, 2023
2,883 Posts
Joined Aug 2011
Apr 17, 2023
smacky00
Apr 17, 2023
2,883 Posts
I have a 641W build I want to make: https://pcpartpicker.com/list/DRxX4s

People on Reddit told me to get a 1000W PSU because I should multiply the wattage by 1.5, for some reason, to get the PSU I should get. That makes no sense.

Is that correct?
Apr 18, 2023
830 Posts
Joined Feb 2017
Apr 18, 2023
3JABO
Apr 18, 2023
830 Posts
Quote from smacky00 :
I have a 641W build I want to make: https://pcpartpicker.com/list/DRxX4s

People on Reddit told me to get a 1000W PSU because I should multiply the wattage by 1.5, for some reason, to get the PSU I should get. That makes no sense.

Is that correct?
Probably overkill, but you're in a deal thread about small form factor PSU and the case you selected can use a cheaper, normal sized PSU
Pro
May 25, 2023
297 Posts
Joined Jan 2013
May 25, 2023
Yukikaze
Pro
May 25, 2023
297 Posts
Quote from smacky00 :
I have a 641W build I want to make: https://pcpartpicker.com/list/DRxX4s

People on Reddit told me to get a 1000W PSU because I should multiply the wattage by 1.5, for some reason, to get the PSU I should get. That makes no sense.

Is that correct?
It's mainly for the "peak efficiency" of the PSU. Peak efficiency is typically around 50%-70% of the PSU's rated wattage. A good gold/platinum 1000w psu should have zero rpm modes where the PSU wont even spin the fan until it breaks 30%-40% load.

I view this as a few things, Less cost on your yearly electricity bill (although this amount isn't much depending on your kwh cost of your area)

No need or less need to clean the PSU filter which is usually located on the bottom of your case. Depending on how and where you have the computer this can be helpful. For example if you leave the PC on top of carpet but the PSU fan never needs to spin due to the zero rpm mode then that actually isn't a problem. Example 2 You have a lot of pets in the house but since the fan on the PSU doesnt have to spin up you dont have to worry about constantly cleaning the filter.

Transient spikes are the other reason you'd want a PSU to be a good bit higher than your build wattage.

These are more "quality of life" things and not really a requirement for the build. For a 641watt (lets just say 650 watt) build I'd probably recommend a 850w PSU preferably gold rating. The PSU is what powers and protects your whole system so I generally recommend NOT skimping out on the PSU.
1
May 26, 2023
2,883 Posts
Joined Aug 2011
May 26, 2023
smacky00
May 26, 2023
2,883 Posts
Quote from Yukikaze :
It's mainly for the "peak efficiency" of the PSU. Peak efficiency is typically around 50%-70% of the PSU's rated wattage. A good gold/platinum 1000w psu should have zero rpm modes where the PSU wont even spin the fan until it breaks 30%-40% load.

I view this as a few things, Less cost on your yearly electricity bill (although this amount isn't much depending on your kwh cost of your area)

No need or less need to clean the PSU filter which is usually located on the bottom of your case. Depending on how and where you have the computer this can be helpful. For example if you leave the PC on top of carpet but the PSU fan never needs to spin due to the zero rpm mode then that actually isn't a problem. Example 2 You have a lot of pets in the house but since the fan on the PSU doesnt have to spin up you dont have to worry about constantly cleaning the filter.

Transient spikes are the other reason you'd want a PSU to be a good bit higher than your build wattage.

These are more "quality of life" things and not really a requirement for the build. For a 641watt (lets just say 650 watt) build I'd probably recommend a 850w PSU preferably gold rating. The PSU is what powers and protects your whole system so I generally recommend NOT skimping out on the PSU.
Thanks for the info. I was planning on getting a Gold-rated PSU anyway. The Cultist list of the tiers of PSUs got kind of hectic so I just added a Corsair RM1000 when I last posted and stuck with that. I figured the "efficiency" thing you mention would be nice and would give me some room for the cases of transient spikes.


No pets in the house and it will be kept on a desk. Our house is all hardwood so so dust from the carpet. And I'm familiar with cleaning filters since we have several air purifiers, so I imagine the frequency of cleaning the PC's filters will be less because of that.

Thanks again

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