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Windows 7: THE Best Power Supply?

01 Sep 2009   #21

 
 

Quote   Quote: Originally Posted by smarteyeball View Post
No. Just because a power supply is rated at XXX watts does not mean it runs at XXX watts at all times. Your components will only draw what is needed.
smarteyeball;

I found this quote:
Quote:
Another caveat: Optimal efficiency is only reached at a "proper" load. If you have a 500 Watt Power Supply but then a super-low-consumption PC that only consumes 80 Watt, you're not going to reach 80% efficiency and could easily use ~120 Watt (~50% efficiency).
at this site: Does a 500 watt power supply always use 500 watts of electricity? - Server Fault

Now I am not an expert, and I do not know the qualifications of the author, but it does raise the question about the electricity cost, if I understand correctly, of an OVERPOWERED power supply?

My System SpecsSystem Spec
01 Sep 2009   #22

Win7 64bit Ultimate
 
 

Corsair with a single rail. You can't go wrong. The quality is amazing and they come with a 5 year warranty. 5 years on a power supply is amazing in and of it's self really. Considering the power supply is one of the most likely to go parts in your system.
My System SpecsSystem Spec
02 Sep 2009   #23

 
 

Quote   Quote: Originally Posted by iseeuu View Post
smarteyeball;

Maybe there is a $500 power supply that will upgrade for 10 years? I don't think so.
Neither do I. My apologies for not clearly stating a definition of 'future'. I incorrectly assumed it would be understood that I was referring to a more realistic time frame ie 2-3 years or one, perhaps two upgrades.

Quote   Quote: Originally Posted by iseeuu View Post
But would you double or triple the power requirement just so you could brag about the big powerful power supply under the hood?
I can't deny that some people do indeed go oversized for bragging rights. If that's the sole reason going over-sized, then yes, that decision is not a smart one.

However, the PSU I bought has nothing to do with bragging or e-peen. With my next upgrade, I do plan to continue overclocking, run multiple cards, add more devices etc.

I used my previous PSU to replace an ailing PSU in another PC. Since I had to buy a new one anyway, I used a little forethought, hence the reason I am currently using an over-powered PSU. Come next upgrade, I plan to utilize it's capacity. So to me, my decision was a smart one.

Quote   Quote: Originally Posted by iseeuu View Post
Now I am not an expert
Neither am I, nor do I claim to be an expert on the intricacies of power usage. It would appear that I was slightly erroneous regarding efficiency.

But different brands/models impact on overall efficiency. Some have better low/load usage efficiency than others. In fact some power supplies are most efficient around 50% of total load capacity:

THE Best Power Supply?-hx1000w_efficiency.jpg

By the time I factor in my current setups power usage, I would not be varying far from the peak efficiency under load or at idle.

At any rate, I have that many electrical devices plugged in at any given moment, what's a few extra kilowatts here and there?


My System SpecsSystem Spec
.


02 Sep 2009   #24

 
 

Quote   Quote: Originally Posted by smarteyeball View Post
But different brands/models impact on overall efficiency. Some have better low/load usage efficiency than others. In fact some power supplies are most efficient around 50% of total load capacity:
This is awesome. Most efficient at 50% load! Smartyeyeball, I do not believe there is actually any disagreement between us!

My System SpecsSystem Spec
02 Sep 2009   #25

XP & 7
 
 

I would definitely say Corsair. I have used several of their line of power supplies and they have all worked great. They preform perfectly, quietly and according to the research I did when buying (about a year ago) they offered the most reliable and cleanest power overall. They may cost more than other PSU's and it will eat into your budget, but is well worth it.

If you check Corsair's line of PSU's on newegg you will see they each, with hundreds of reviews, have 5 eggs. A great rating, and they have very positive feedback.

Newegg.com - Computer Hardware,Power Supplies,Power Supplies,Corsair Memory
My System SpecsSystem Spec
02 Sep 2009   #26

XP & 7
 
 

Corsair was apparently voted best manufacturer in 2008 by "Custom PC". I am not familiar with that publication, but Newegg as posted it on each of the corsair PSU's.

I currently have these two PSU's form corsair in use and can say that they are fantastic:

Newegg.com - CORSAIR CMPSU-400CX 400W ATX12V V2.2 80 PLUS Certified Compatible with Core i7 Power Supply - Power Supplies
Newegg.com - CORSAIR CMPSU-620HX 620W ATX12V v2.2 and EPS12V 2.91 SLI Certified CrossFire Ready 80 PLUS Certified Modular Active PFC Compatible with Core i7 Power Supply - Power Supplies
My System SpecsSystem Spec
02 Sep 2009   #27

XP & 7
 
 

Quote   Quote: Originally Posted by Brink View Post
Agreed. You will need to pay attention to the 80 PLUS rating that the PSU has to help determine the quality of it. The more power it has the more you have available as needed.
Yes, the 80 PLUS rating is important as PSU's that can run at 80% efficiency overall (50% and 100% load) will waste less energy and thus generate less noise, heat, and will consume less power: saving money.

I have nothing but good things to say about these PSU's. They are the first ones I look at when building anything, and I always leave a bit of my budget to pay for it.
My System SpecsSystem Spec
02 Sep 2009   #28

 
 

Quote   Quote: Originally Posted by kplu View Post
Yes, the 80 PLUS rating is important as PSU's that can run at 80% efficiency overall (50% and 100% load) will waste less energy and thus generate less noise, heat, and will consume less power: saving money.

I have nothing but good things to say about these PSU's. They are the first ones I look at when building anything, and I always leave a bit of my budget to pay for it.
kplu;

Would you put these power supplies in the "Over $100", or "Over $200" category?
My System SpecsSystem Spec
02 Sep 2009   #29

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by smarteyeball View Post
However, the PSU I bought has nothing to do with bragging or e-peen. With my next upgrade, I do plan to continue overclocking, run multiple cards, add more devices etc.
Of course, with a 1000W PSU, using this site as a a guide http://extreme.outervision.com/psucalculatorlite.jsp

You can run an
--overclocked Core i7 965 Extreme Edition
--32 sticks of DDR3 RAM,
--10 high RPM SATA hard drives,
--2 DVD Burners,
--1 BluRay drive,
--1 PCI RAID SATA controller card,
--Dual ATI Radeon 4870 x2's in Crossfire
--10 120mm case fans \

And you still have 10 watts to spare.

Just sayin
My System SpecsSystem Spec
02 Sep 2009   #30

XP & 7
 
 

It depends on the wattage. The 400CX, 450VX, 550VX, 650TX, and 520VX(w/ rebate) are under $100 according at Newegg. This is relatively inexpensive for such good quality parts, especially the 650TX.

The 620HX, 750HX, 850TX, 850HX, 1000HX(w/ rebate) are between $100 and $200.

None of these listed on Newegg are over $200. (The 1000HX is $239 with a $40 rebate.)
My System SpecsSystem Spec
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