Does upgrading PSU to a higher efficiency reduce heat?

[weione]

Why you might not want to buy a Corsair RM PSU

Well, let see how long my this rm650 can last then.

 

[muddle]

My seasonic x650 also doesnt spin its fan until it hit certain load. Coming to 5 years already.

 

[annoymous]

my fsp aurum looks like its dam bad from the reviews

 

[devilwahaha]

my fsp aurum looks like its dam bad from the reviews

Just use until explode first, if never explode then no need to worry

 

[crystalnox]

my fsp aurum looks like its dam bad from the reviews

It's decent la, just don't recycle it for your next build since it's using capxon caps which don't last long.

 

[Maeda_Toshiie]

It's decent la, just don't recycle it for your next build since it's using capxon caps which don't last long.

That's why I never like the idea of buying FSP Aurum. I don't care if it means gold.

 

[annoymous]

Just use until explode first, if never explode then no need to worry

fwah if explode alr all the parts will ki chia together?

It's decent la, just don't recycle it for your next build since it's using capxon caps which don't last long.

that time buy i thought the casing there say japanese 105 deg rated caps, yuan lai tio scam

 

[crystalnox]

fwah if explode alr all the parts will ki chia together?




that time buy i thought the casing there say japanese 105 deg rated caps, yuan lai tio scam

Primary side is Japanese, they never claim all are Japanese.

 

[annoymous]

Primary side is Japanese, they never claim all are Japanese.

but reading reviews i heard superflower used almost all japan caps right? that would be my next upgrade

 

[killerslayer92]

psu have a specific load at which they are most efficient. each psu is different. rated at 650w doesnt mean efficient at 650w output

analogy for illustration
650w load efficiency $1/w
600w load efficiency $0.50/w
550w load efficiency $0.30/w
500w load efficiency $0.50/w
450w load efficiency $1/w

maximum efficiency = 550w load

conclusion: dont buy too powerful psu, 20% extra can liao

 

[crystalnox]

psu have a specific load at which they are most efficient. each psu is different. rated at 650w doesnt mean efficient at 650w output

analogy for illustration
650w load efficiency $1/w
600w load efficiency $0.50/w
550w load efficiency $0.30/w
500w load efficiency $0.50/w
450w load efficiency $1/w

maximum efficiency = 550w load

conclusion: dont buy too powerful psu, 20% extra can liao

A more accurate illustration would be

650w load efficiency $1/w
600w load efficiency $0.95/w
550w load efficiency $0.90/w
500w load efficiency $0.95/w
450w load efficiency $1/w
100w load efficiency $1.20/w

The efficiency variation typically <10% from 20-100% load on those higher end psus.

 

[Maeda_Toshiie]

Two points that I would like to make:

1. Taiwanese caps cover quite a range. While their best are not on the same level Nichicon or Hitachi rated at 105, some like Teapo are not complete crap. Obviously avoid stuff like Fuhjyyu.

Of course, if you are from Badcaps, then by all means enforce the all Japanese cap rule on your purchases...

Note that if the advertising claim Japanese caps, it usually means only the primary, not the secondaries (eg. some Seasonic units, like mine). If all Japanese caps, the advertising will loudly proclaim that. If polymer caps are used, expect that to be mentioned.

2. Calculating cost savings from efficiency simply based peak load is misleading since most people do not purely game on the said machine (ignoring 24/7 mining, folding, and encoding here). If you want to "optimize", you must look at the typical usage pattern and the loads resulting from it.

 

[Ultimate Chicken]

Frankly, I'm not sure how the OP logic is supposed to work. A PSU mismarked because its from a crap supplier will seem inefficient, but that's only because its mismarked and is actually generating Y instead of X power - the missing power is simply not there and therefore won't ever become heat.

That being said, NOBODY has done any tests on which PSU causes the system to be less hot. >_>'

 

[annoymous]

Two points that I would like to make:

1. Taiwanese caps cover quite a range. While their best are not on the same level Nichicon or Hitachi rated at 105, some like Teapo are not complete crap. Obviously avoid stuff like Fuhjyyu.

Of course, if you are from Badcaps, then by all means enforce the all Japanese cap rule on your purchases...

Note that if the advertising claim Japanese caps, it usually means only the primary, not the secondaries (eg. some Seasonic units, like mine). If all Japanese caps, the advertising will loudly proclaim that. If polymer caps are used, expect that to be mentioned.

2. Calculating cost savings from efficiency simply based peak load is misleading since most people do not purely game on the said machine (ignoring 24/7 mining, folding, and encoding here). If you want to "optimize", you must look at the typical usage pattern and the loads resulting from it.

good info there

 

[Mem2003]

1. AC power (wall) converts to DC power [Loss power: become heat]
1a.Depend on system required {[??? so higher PSU rated will run cooler ???]}
e.g. Use System 500w , same temperature
efficicency=80% {500/0.8}-500=125W are turned into heat
efficicency=90% {500/0.9}-500=55W are turned into heat

1b. If Actual system consume(draws) = 400W-to-600W


2. PSU rated at 500W can deliver 500W of power to the system regardless of its efficiency
2a. Buy PSU rated at which ??? : 500W; 600W, 800W, 1000W, etc
2b. Buy PSU efficiency which ?? : at 80+, 90+, etc
2c. Plot Chart on actual PSU Load level: idle, 25% 50% 75% 100%
2d. Plot measure Temperature level at difference PSU Load level
2e. Brand/ model/ etc
Affects .... .... ... system consume(draws) from idle, normal load to ....
2f. Ageing factor / ETC

=========================================

My pc with i5 3570 + gtx 670 is running really hot on my corsair hx520.
I am hoping by switching over to seasonic 660w platinum psu with more overhead wattage and higher efficiency will reduce the temperature.

I know that a higher efficiency psu will reduce heat. But can't seem to get any info on how much temperature it will reduce. Will the drop in temperature be an obvious difference? Is it worth the hassle to change?

 

[a562140]

psu have a specific load at which they are most efficient. each psu is different. rated at 650w doesnt mean efficient at 650w output

analogy for illustration
650w load efficiency $1/w
600w load efficiency $0.50/w
550w load efficiency $0.30/w
500w load efficiency $0.50/w
450w load efficiency $1/w

maximum efficiency = 550w load

conclusion: dont buy too powerful psu, 20% extra can liao

yah go look for such charts on review sites if possible.

 

[escksu]

Me using Seasonic X760 G now..... Good stuff.....

Don't know what coil whine, never heard it before.....