Geekzone: technology news, blogs, forums
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.

539 posts

Ultimate Geek

# 198409 8-Jul-2016 09:26
Send private message

I'm just wondering what the downsides are running a PC with a single GPU with a 1250w PSU. Obviously there will be some power wastage or inefficiency.


I'm planning to run a tri or quad GPU setup "sometime" in the future so I'd rather not have to buy two PSUs, one now and another in the future if there are no really serious disadvantages going with the 1250w PSU now.

Create new topic
975 posts

Ultimate Geek


  # 1587973 8-Jul-2016 09:38
One person supports this post
Send private message

No its not "Bad".


The big question is why do you want to run 4 GPU's. What type are you planning on running and what are you planning to use them for?


If you need the much GPU power then I would look toward the most powerful cards available, which at the moment are the GTX1080 or GTX1070. And I would probably look at a board partner model which will be factory overclocked. And I would not go with more than 2 GPU's. You will have loads of problems if you do more than 2.

563 posts

Ultimate Geek

  # 1588022 8-Jul-2016 10:30
Send private message

Depends on PSU, if it's not 80+ rated and it's cheap crap then 1250W = 600W under load. (Perhaps not quite that bad, but depends upon brand.)


408 posts

Ultimate Geek

  # 1588046 8-Jul-2016 11:09
Send private message

Nvidia isn't supporting 3-way sli with their new GPUs. You can have 3 but the third would only be used for PhysX

1922 posts

Uber Geek


  # 1588105 8-Jul-2016 12:29
Send private message

You have to look at the efficiency load curve to determine if its worth it.  At 50% load, PSUs are often very inefficient, even the higher standard ones... At 80%, they start to perform where you expect for the power draw... Extrapolate your power use for the components against the PSU efficiency curve and it will tell you how much more power will be drawn from the wall compared to fully loaded.

5393 posts

Uber Geek

Lifetime subscriber

  # 1588112 8-Jul-2016 12:34
Send private message

I'm running a Corsair RM1000 1000 Watt 80 PLUS Gold Certified PSU on a large video-editing desktop PC with only one graphics card (an ASUS Strix GeForce GTX 980).
Although the PSU is overspecified, I bought it (discounted) because I am running 8 X HDDs (JBOD), and it had enough power leads to handle all of them.
The PSU runs cool, and the fan is always off. (I like quiet PCs)


975 posts

Ultimate Geek


  # 1588202 8-Jul-2016 13:43
Send private message

Yeh most definitely get an 80 plus certified. I got an EVGA 650W gold modular. It runs a Gtx780 which is a very power hungry card. But those new pascal 10xx series or the Polaris RX480 draw significantly less power. I would pick a high quality psu over the max power number on it.

740 posts

Ultimate Geek

  # 1588796 9-Jul-2016 13:31
Send private message

Great article on Tomshardware on choosing the right PSU:,2916.html


975 posts

Ultimate Geek


  # 1588800 9-Jul-2016 13:36
Send private message

Haha after reading that and having 2 psus blow up in the mid range PC test and to see that both of them were not 80+ certified goes to show that you should look for the sticker.

740 posts

Ultimate Geek

  # 1594670 18-Jul-2016 18:19
Send private message

Yeah - after reading that article I convinced myself to upgrade my old Corsair 650W for a 750w Seasonic Silent Snow (80+ Platinum). I also like silence (or at least quiet), and the Corsair has a constantly spinning fan.

1353 posts

Uber Geek

  # 1594696 18-Jul-2016 19:23
Send private message



I'm planning to run a tri or quad GPU setup "sometime" in the future so I'd rather not have to buy two...





Anything more than 2 way SLI or Crossfire is a waste IMO, the performance gain to cost ratio is shocking to say the least.




Also Nvidia is ditching m,ore than 2 way SLI it seems: 

Create new topic

Twitter and LinkedIn »

Follow us to receive Twitter updates when new discussions are posted in our forums:

Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:

Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:

News »

D Link ANZ launches EXO Smart Mesh Wi Fi Routers with McAfee protection
Posted 15-Oct-2019 11:31

Major Japanese retailer partners with smart New Zealand technology IMAGR
Posted 14-Oct-2019 10:29

Ola pioneers one-time passcode feature to fight rideshare fraud
Posted 14-Oct-2019 10:24

Spark Sport new home of NZC matches from 2020
Posted 10-Oct-2019 09:59

Meet Nola, Noel Leeming's new digital employee
Posted 4-Oct-2019 08:07

Registrations for Sprout Accelerator open for 2020 season
Posted 4-Oct-2019 08:02

Teletrac Navman welcomes AI tech leader Jens Meggers as new President
Posted 4-Oct-2019 07:41

Vodafone makes voice of 4G (VoLTE) official
Posted 4-Oct-2019 07:36

2degrees Reaches Milestone of 100,000 Broadband Customers
Posted 1-Oct-2019 09:17

Nokia 1 Plus available in New Zealand from 2nd October
Posted 30-Sep-2019 17:46

Ola integrates Apple Pay as payment method in New Zealand
Posted 25-Sep-2019 09:51

Facebook Portal to land in New Zealand
Posted 19-Sep-2019 18:35

Amazon Studios announces New Zealand as location for its upcoming series based on The Lord of the Rings
Posted 18-Sep-2019 17:24

The Warehouse chooses Elasticsearch service
Posted 18-Sep-2019 13:55

Voyager upgrades core network to 100Gbit
Posted 18-Sep-2019 13:52

Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.

Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron

Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.