Maximum PCIe slot power draw for X99 Taichi
Printed From: ASRock.com
Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=4397
Printed Date: 19 Jul 2025 at 12:54am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Maximum PCIe slot power draw for X99 Taichi
Posted By: vegamite
Subject: Maximum PCIe slot power draw for X99 Taichi
Date Posted: 11 Feb 2017 at 5:39am
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I would like to know what is the maximum allowed power draw is for slots PCIE4 and PCIE5. I am using some I/O accelerators that can use a bit more than 25W but will not unless I change a setting. I don't want to change the setting until I confirm if these slots support up to 75W. I am looking for a statement similar to what Asus has posted here: https://www.asus.com/support/faq/104406/" rel="nofollow - https://www.asus.com/support/faq/104406/ . I didn't find anything in the manual or FAQ. Thanks!
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Replies:
Posted By: wardog
Date Posted: 11 Feb 2017 at 7:23am
Asus and ASRock are still tight so it wouldn't surprise me if that link is correct. Yet as Moderators here that's dipping into the deep end of technical questions for us. Use one of the below two contacts to inquire on that particular question please. Both are in CA so PST Time Zone applies. Support Phone: 1-909-590-8308 Support Email: support@asrockamerica.com And if you would HP please post back their answer if you would please. That knowledge may prove helpful down the road on a later date to another User here. |
vegamite wrote:Posted By: parsec
Date Posted: 11 Feb 2017 at 10:15am
The specs quoted in the Asus link are simply those of the PCIe specification, which must be adhered to by any mother board manufacture. Please note that the 75W of maximum power is a combination of the +12V and +3.3V rails. Also, there seem to be some restrictions on power limits depending upon the particular card being used. See Power and Pinout sections (just above Power) in the link below for details on the PCIe power specification: https://en.wikipedia.org/wiki/PCI_Express#Power" rel="nofollow - https://en.wikipedia.org/wiki/PCI_Express#Power ------------- http://valid.x86.fr/48rujh" rel="nofollow"> 
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Posted By: vegamite
Date Posted: 16 Feb 2017 at 9:42pm
| I got back from support that all x16 slots support up to 75W. Thanks for the help here! |
Posted By: wardog
Date Posted: 16 Feb 2017 at 10:29pm
Hopefully you found your answer in their reply. Thanks for returning and forwarding their answer. It's appreciated. |