Psu Help with cables

Andy2761

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Jun 29, 2015
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Hey Guys I'm building my first pc but I run into a problem with my case + psu. I'm using a EVGA 750W B2 Semi Modular Power supply and the NZXT s340. The problem is there is just way too much cables for it to fit around, so I was wondering is it necessary to use every single port of the psu? It includes perif 1 and 2, cpu 1, vga 1, vga 2, sata 3 2 and 1. In other words, do I have to use ALL vga's or can i just use vga 1, same for sata and perif. Thanks guys!
 
Solution




Whether you would be using all connectors or not, depends on the parts you have on your PC.

The EVGA 750W B2 has the following connectors:

24 Pin ATX 1x
EPS (CPU) 2x...




Whether you would be using all connectors or not, depends on the parts you have on your PC.

The EVGA 750W B2 has the following connectors:

24 Pin ATX 1x
EPS (CPU) 2x 8pin (4+4)
PCIE 4x 8pin (6+2)
SATA 9x
Four-Pin Peripheral 5x
Floppy 1x

Example:

Let's say your PC has CPU i5 4690k, Gigabyte Z97 D3H Motherboard, R9 290X, 1 hard disk, 1 x optical disk

Then you would be using:

24 Pin ATX 1x [Motherboard needs this]
EPS (CPU) 2x 8pin (4+4) [CPU uses only 1 x 8-pin connector]
PCIE 4x 8pin (6+2) [The R9 290X requires only 1 x 6-pin connector (uses 1 x 6-pin from 1 x 8-pin, leaving out the 2-pin from 6+2 pin setup) & 1 x 8-pin connector]
SATA 9x [Hard disk only uses 1 x SATA]
Four-Pin Peripheral 5x [Optical Drive uses 1 x Four-Pin Peripheral]
Floppy 1x

So as could see not all connectors are used with the above mentioned PC setup. Like I said before, it all depends on your entire PC config that will dictate how many PSU connectors you'll need and going to use.

4-Pin Peripheral Connector:

The 4-pin peripheral connector, also called the Molex connector, is the most frequently used type of power connector in PC building and is used to connect hard drives, optical drives, certain fans and other devices. Some new SATA devices have begun to use SATA power connectors, and many power supplies are providing SATA connectors too. If a power supply does not provide enough SATA connectors, you can use Molex to SATA power converter cables to do the job.

Update:

Then you would be using:

24 Pin ATX 1x [asus z97-ar Motherboard needs this]
EPS (CPU) 2x 8pin (4+4) [i5 4690k CPU uses only 1 x 8-pin connector]
PCIE 4x 8pin (6+2) [The GTX 970 requires only 2 x 6-pin connector (uses only the 2 x 6-pin from 2 x 8-pin, leaving out the 2-pins from 6+2 pins setup)]
SATA 9x [SSD 1x SATA, Hard disk 1 x SATA]
Four-Pin Peripheral 5x
Floppy 1x

For your setup, as you could see, even after connecting all the parts, there are still plenty of unused connectors available. These unused connectors can be used in future, if you plan to add another GTX 970, additional hard disk, SSD, optical drive etc.

The EVGA 750W B2 is a pretty good "Tier 2" PSU that can handle even two GTX 970 in SLI configuration with ease.

So go ahead and build your PC with confidence.

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@Vic 40



Just because you underline & highlight something doesn't mean its important and naturally makes your statement true.

I think, your comment is not honest and a bit hypocritical, as you've highlighted only the thing which you obviously want to project as "Untrue".

But actually, if you read the second part clearly says, "SATA devices have begun to use SATA power connectors, and many power supplies are providing SATA connectors too. If a power supply does not provide enough SATA connectors, you can use Molex to SATA power converter cables to do the job."

This is a general article from Newegg - Power Supply Buying Guide: http://www.newegg.com/Product/CategoryIntelligenceArticle.aspx?articleId=199

Andy2761 asked, "Alright! may I ask what Perif ports are used for? That is possibly the only thing I do not know."

He asked a general question about the peripheral connector and I think the article from Newegg answers that in a truly general, easy to understand way.

Your statement, "This is no longer true,the sata connector talked about here has taken that place.", is absolutely wrong, as the article "DIDN'T" say molex is the "ONLY" way to connect the drives.

So its better to keep your clouded interpretation to yourself than using it to misguide someone.

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@Przeszczep



Even if he has different version of GTX 970, his PSU can handle all those versions that you're talking. So no worries.

I think you commented just because I used the word "ONLY" in that statement.

But if you really concerned about that you're welcome to put out a list of GTX 970 cards that needs different combination of pin connectors, which would really help the user.

Cheers!
 
Solution
@Anonymouselite5,

It would be nice for Andy to pick his own best answer,it's his right and that of no one else.It's not entirely correct too plus it's updated after a question,it would be nice that such an update came in a new post so the OP would know about it.
For that matter is your own answer more to the point to what's really needed.




This is no longer true,the sata connector talked about here has taken that place.
 


Officially it needs 2 x 6-pin but in reality it depends on the manufacturer. You can find 2 x 6-pin, 1 x 8-pin, 1 x 8-pin + 1 x 6-pin or possibly other configurations.

 


I just felt I was rehashing what was already said in his post, just he went into more depth.

OP you can dis-select and select any answer if you want, but I still feel that Yeskay's answer was mostly correct even though outdated, still correct. Just in case you missed it.
 


Also 4 pin peripheral connectors are usually used on other hardware such as: fan controllers. LED kits, and other devices.

They're not usually used on normal ATX boards, they're for add in hardware that you can add later, usually for peripheral components (so called perif ports).

-good luck
 

In that way was your answer unnecessary. I think like i you felt the answer was maybe a bit to elaborate (Yeskay seems to get a tendency to do that lately) and gave the OP the more exact answer needed and asked for.



That should be really up to you.