Heatsink Reviews and Analysis
TOP 5 Heat Sinks     TOP 5 Low Profile Heat Sinks     TOP 5 Liquid Coolers    
 Reviews + Articless     News     HSF Mfg's Index     Advanced Search    
How to distinguish a How to distinguish a "REAL" P4 PSU
Fri Nov 08, 2002 | 2:43P| PermaLink

How to distinguish a "REAL" P4 power supply?

A typical P4 power supply should have following features (EX: 300W)

  • With additional 2X2 4P connector
  • Increased +12V output 12.0 Amps= > 15.0 Amps
    The reason why +12V demand is increasing for P4 system, the VR current for P4 processor are getting the voltage support from +12V rail instead of +5V rail.
  • Increased +5Vsb output 1.5 Amps= > 2.0 Amps
    Trends in PC system power management solutions are driving a need for increased +5Vsb current capability for all ATX-family power supplies to support IAPC(Instantly Available PC), STR(Suspend-to-RAM),....functions.
  • Increased +3.3V output 20.0 Amps= > 28.0 Amps
    Trends in motherboard device such as memory and add-on card are use +3.3V instead of +5V, the +3.3V output capability should be enhances for current applications and future requirements.
  • +5V min. load requirement was very critical for stability & compatibility
    (The most important)

    The reason why to keep +5V output capability was for downward compatible with traditional ATX power supply only, last generation ATX & SFX power supply tend to rely on +5V output to draw a lot of current in order to maintain stable regulation, when this +5V current dropped to a certain level as on those from a P4 system, most of the rails may run out of regulation and therefore cause intermittent failure.

    News Archives by Category
    » Audio / Sound » Beginners Guides » Benchmarks
    » Biometrics » BIOS » Business / Industry
    » Cases » Chipset » Computer / SFF PCs
    » Cooling / Heatsinks » CPU / Processors » Digital Cameras
    » Drivers » Editorial » Games
    » Gossip » Hard Drives/SSD » Hardware
    » Home Theatre » Imaging » Memory
    » Mobile Devices » Monitors » Motherboards
    » Mouse Pads » MP3 Players » Networking
    » Notebooks » Operating System » Optical Drives
    » Overclocking » Peripherals » Power Supply
    » Press Release » Printers » Servers
    » Site News » Software » Tips
    » Tradeshows / Events » Video Cards » Web News
    Follow Frostytech on FacebookFrostytech News RSS FeedFollow frostytech on Twitter
    ° Got Feedback?
    ° Mk.II Test Platform
    ° Where To Buy?
    ° Manufacturer Index
    ° Industry Dir.
    ° Cooling Projects

    Scythe Ninja 4 SCNH-4000 Heatsink Review

    DeepCool Maelstrom 240 Liquid Cooling System Review

    DeepCool Gamer Storm Lucifer K2 Heatsink Review

    Gelid Antarctica Heatsink Review

    Noctua NH-D9L 3U Low Noise Heatsink Review

    BeQuiet Shadow Rock LP Heatsink Review
    ...More Articles >>

    Websites you may also like:

    Google Search Frostytech

    Time stamped: 12:54PM, 03.21.2018
    In Case You Missed it...
    °  CORSAIR Hydro H115i Pro Low Noise 280mm RGB Liquid CPU Cooler

    °  Phanteks Glacier C350i CPU Water Block

    °  Enermax T.B.RGB 120 mm fan

    °  Noctua Chromax @ LanOC Reviews

    °  AMD RX Vega 64 Liquid Cooled @ LanOC Reviews

    °  Cooler Master MASTERLIQUID ML120L RGB CPU Cooler Review
    Since June 1999

    Find a Heatsink / RSS Feeds
    Latest Heatsink Reviews
    Top 5 Heatsinks Tested
    News RSS Feed
    Reviews RSS Feed

    Social Media
    Pinterest Info
    Contact Us / Heatsink Submissions
    Submit News
    Suite 66
    © Copyright 1999-2018 All Rights Reserved. Privacy policy and Terms of Use
    Images © and may not be reproduced without express written permission.
    Current students and faculty of accredited Universities may use Frostytech images in research papers and thesis, provided each image is attributed.