Corsair 620HX vs 520HX - Which one would run hotter?

[ahmurat]

I'm concerned about heat and noise in my pc. I've narrowed down my search to these two power supplies. I do not even need 520W. I'm not running SLI, but i might in the future, and I like the quality of these units.
I'm wondering if the 620 would be running cooler in my system. Then i'd pay the extra. If not, i'll just get the 520.
What is the logic here? Anybody have any ideas / experiences ?

Thanks.

 

[RallyMaster]

They are each designed to be about the same temperature.
http://www.silentpcreview.com/article692-page1.html SPCR has a graph that shows the noise level per % load and it seems like the HX520W would be quieter.

Don't worry about the heat produced since both are 80 Plus PSUs. Don't worry about the noise because many of us full load these things and they barely make a sound. Get what your components need. And BTW, you most likely won't go with SLi considering most STILL haven't gone SLi even after all these years.

 

[ahmurat]

Originally posted by: RallyMaster
They are each designed to be about the same temperature.
http://www.silentpcreview.com/article692-page1.html SPCR has a graph that shows the noise level per % load and it seems like the HX520W would be quieter.

Don't worry about the heat produced since both are 80 Plus PSUs. Don't worry about the noise because many of us full load these things and they barely make a sound. Get what your components need. And BTW, you most likely won't go with SLi considering most STILL haven't gone SLi even after all these years.

AWESOME! Thank you very much!

 

[ahmurat]

One other question: I've got the Antec P180b case with Asus P5B Deluxe motherboard. It seems like i'd need a power extension cable for the 4 pin 12V cpu power connector. I've searched for it with no success. Do you know where i could get it?

 

[zagood]

http://svc.com/cbl-extend-12v.html

Additional connectors here:
http://svc.com/fan-cable-adapter.html

-z

 

[idiotekniQues]

you do not need an extension with that mobo, i had it briefly, with the 620 and a p180b.

it will however have to run across your Graphics Card and is a bit annoying.

i did get a short extension cord for aesthetic/airflow reasons and now run it around the rear exhaust fan with my new mobo.

but, you can build your pc just fine until you get an extension. no worries.

 

[gramboh]

I have a P5B-D, P180B and got the 520W. As said above, the thing barely makes any noise at all (in fact my entire setup, even at 100% Orthos load or gaming is so quiet I was shocked, especially the video card). I'd go with the 520W and save a few bucks.

I used an extension for the 8pin EPS12V connector because running it directly causes you to pull it snug over the video card. Using a connector you can route it up and around or behind the MB plane (which I did as my P180 is actually a P182).

 

[aigomorla]

Originally posted by: RallyMaster
They are each designed to be about the same temperature.
http://www.silentpcreview.com/article692-page1.html SPCR has a graph that shows the noise level per % load and it seems like the HX520W would be quieter.

Don't worry about the heat produced since both are 80 Plus PSUs. Don't worry about the noise because many of us full load these things and they barely make a sound. Get what your components need. And BTW, you most likely won't go with SLi considering most STILL haven't gone SLi even after all these years.

you know what, thats so true about sli.

I noticed the only people who run sli, are those who had sli b4, or those who bought sli products.


Anyhow, to be honest i would think the higher wattage one would produce the less overall heat. But rally's comment is correct, there both 80plus so you shouldnt worry.

However, theres less work for the 620, to do, so wouldnt that in turn cause less heat?

 

[ahmurat]

Originally posted by: gramboh
I have a P5B-D, P180B and got the 520W. As said above, the thing barely makes any noise at all (in fact my entire setup, even at 100% Orthos load or gaming is so quiet I was shocked, especially the video card). I'd go with the 520W and save a few bucks.

I used an extension for the 8pin EPS12V connector because running it directly causes you to pull it snug over the video card. Using a connector you can route it up and around or behind the MB plane (which I did as my P180 is actually a P182).

Thanks everyone for their input. I do not want the power cable to go around the video card. I'd like it to go around the motherboard and come down to the plug.
I also noticed the cpu power plug is 8-pin on the motherboard but the cable is 4-pin on my existing power supply. Is that a concern? Does the 520w come with 4 or 8 pin connector?

 

[idiotekniQues]

the corsairs come with both a 4 and 8 pin permanently attached to the ps, which is strange since you only need one and the point of modular is to avoid clutter.

basically, you will have to hide one above the PS in that case. not a big deal but strange corsair planned it like that.

 

[ahmurat]

Originally posted by: idiotekniQues
the corsairs come with both a 4 and 8 pin permanently attached to the ps, which is strange since you only need one and the point of modular is to avoid clutter.

basically, you will have to hide one above the PS in that case. not a big deal but strange corsair planned it like that.

I've read that the 8-pin is for dual cores. I've got a E6400. Does that mean i have to connect the 8-pin power supply or is 4-pin connector also fine?
If I have to connect 8-pin, then should i buy two of those 4-pin extension cables?

Thanks again.

 

[idiotekniQues]

thats not true. i went thru 3 different mobos for this 6400, all used the 4-pin. i think the 4-pin is just newer.

in fact, i think two of the mobos actually had the 8-pin interface but with 4 blocked off.

 

[gramboh]

The 8pin EPS12V was originally designed for dual socket server boards which had multiple high draw CPUs (e.g. 135W each on two sockets). I've read that using a single Core 2 Duo will not even exceed the power draw of the main 24pin connector unless you go over 130W on overclocking (not sure what voltage/MHz this translates to).

I use the 8pin because I have it and it could potentially increase stability. With the P5B-D you can connect either the 4pin or 8pin, to connect the 8pin, pull the little tab off the extra pins and plug it in. The 8pin can supply more power.