Jump to content
Strawberry Orange Banana Lime Leaf Slate Sky Blueberry Grape Watermelon Chocolate Marble
Strawberry Orange Banana Lime Leaf Slate Sky Blueberry Grape Watermelon Chocolate Marble

MSFN is made available via donations, subscriptions and advertising revenue. The use of ad-blocking software hurts the site. Please disable ad-blocking software or set an exception for MSFN. Alternatively, register and become a site sponsor/subscriber and ads will be disabled automatically. 

Sign in to follow this  
Outbreaker

Power supply PCI Express amperage output question

Recommended Posts

Outbreaker    1

HI :)

I'm looking for a new Power supply for my new PC but i'm confused about some Technical Data on the "be quiet! Straight Power E9 700 Watt" .

+12V1 - 18 A / 56 A

+12V2 - 18 A / 56 A

+12V3 - 22 A / 56 A

+12V4 - 22 A / 56 A

Way are they wirtting 56A behind every +12V connector? :wacko:

Edited by Outbreaker

Share this post


Link to post
Share on other sites
CoffeeFiend    0

It means you can draw 18A max on 12V1 and 12V2 (18A each). And then 22A max on 12V3 and 12V4 (22A each). But you can't exceed a power draw of 56A combined between all four.

Edit: rewording.

Share this post


Link to post
Share on other sites
Outbreaker    1

Thanks.

And what if a power supply has "+12V - 70 A" and 4x PCIe connectors? does that mean it doesn't matter how much amperage a single +12V connector uses only that all +12V conncter can not get more then 70 A is that right?

Edited by Outbreaker

Share this post


Link to post
Share on other sites
CoffeeFiend    0

The PCI-e power connector is limited by whichever rail it's hooked up to, so 18A or 22A in this case. There's no way you could push 70A in one of those anyway, the connectors & wires would melt before that.

The 70A is the limit of everything that uses 12V on the entire system. Be it from PCI-e power connectors, hard drive power connectors, CPU via its power connectors or the ATX connector, etc.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

Sign in to follow this  

  • Recently Browsing   0 members

    No registered users viewing this page.

×