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Type: Posts; User: jnv11

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    Did anyone forget about the VRM controller?

    I noticed that some VRM controllers like International Rectifier's digital VRM controllers use the +3.3V rail for power. Others like Intersil's digitally-controlled analog VRM controllers use the +5V...
  2. I think that this is a case of where governments...

    I think that this is a case of where governments are unaware of the problem because few people complain about bad power supply units. The average consumer who complains to these agencies usually...
  3. Should relevant authorities be notified of fraudulent or unsafe PSUs?

    Has any power supply reviewers thought about reporting fraudulently rated or unsafe power supply units to the relevant authorities?

    In the USA, fraudulently rated power supplies could be reported...
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    I the USA, the Radeon R9 380 is just slightly...

    I the USA, the Radeon R9 380 is just slightly more expensive than the GTX 970 by a few dollars. This is why I recommended it. However, I did not know that the R9 380 was much more expensive than the...
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    The cheat is allowed in some circumstances but not others

    I just found out that Serial ATA's Native Command Queuing permits the reporting of writes that just entered the write buffer as complete unless the driver sets the FUA (Force Unit Access) bit...
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    I found a study that shows plenty of the faults...

    I found a study that shows plenty of the faults that power failures can cause SSDs to generate at https://www.usenix.org/system/files/conference/fast13/fast13-final80.pdf. Unfortunately, it fails to...
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    The AMD Radeon R9 390 beats the GTX 970 in the...

    The AMD Radeon R9 390 beats the GTX 970 in the same price range. It has access to all of its memory at all times unlike the GTX 970 which runs two pools of memory (3.5 GB at 7/8 speed and 512 MB at...
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    Have you verified that your signal is weak?

    First, did you browse into the cable modem's status page to verify that you have a weak signal? My experience has shown me these possibilities: the downlink signal is too weak or too strong, the...
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    Some other possibilities I can think of to cause...

    Some other possibilities I can think of to cause the ripple besides the VRM which Behemot covered are the EMI and crosstalk from all of the nearby digital circuits.
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    Samsung did state in one of its presentations...

    Samsung did state in one of its presentations that wound up at http://aod.teletogether.com/sec/20140519/SAMSUNG_Investors_Forum_2014_session_1.pdf that it mitigates row hammer on the DDR4 chip...
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    What brand of DDR3 was that? It would be nice to...

    What brand of DDR3 was that? It would be nice to know which brands we should select when choosing memory.

    Anyways, DDR is not vulnerable because the memory cells of that time were not dense enough...
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    I just mentioned Linux because that was what the...

    I just mentioned Linux because that was what the test was run under. I am pretty sure that a government that managed to convince Microsoft to hand over its Windows source code could construct a row...
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    You should replace old DDR3 due to the row hammer hardware bug

    If that DDR3 RAM is old, recycle it. It is probably vulnerable to the row hammer hardware bug that has been successfully used to root Linux as seen in...
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    It is not paranoia in some cases. It is TEMPEST.

    It is not paranoia in some cases, especially in signals intelligence (a.k.a. SIGINT). See https://en.wikipedia.org/wiki/Tempest_(codename) . I was not thinking about this when I was trying to design...
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    My main motive with being concerned with EMI is...

    My main motive with being concerned with EMI is because there have been some ham radio operators in my neighborhood in the past, and I want to be a good neighbor. I also want reliability, and do not...
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    Computer Case Windows and EMI/RFI

    I am looking for a new computer case. However, I was wondering whether or not I needed to worry about EMI/RFI. Do computer cases with windows have any sort of treatment to block EMI/RFI, or do they...
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    Johnny Lucky's PSU Lemon List and Power Supply Recommendations List

    What do you think of Johnny Lucky's PSU Lemon List and its Power Supply Recommendations List?
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    Many of the rails you describe as totally useless...

    Many of the rails you describe as totally useless are actually still used.

    The 5V rail is definitely not useless. It is actively used by USB ports on the motherboard because 5V is the standard...
  19. What kills future purchases of single 12V rail PSUs for me

    See http://www.legitreviews.com/intel-x99-motherboard-goes-up-in-smoke-for-reasons-unknown_150008 for why a virtual multiple rail PSU could possibly save your motherboard and/or your CPU depending on...
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    Has anybody thought about the security implications of an IoT PSU?

    Has anyone thought about the security implications of an Internet of Things connected power supply unit? I just had some nasty thoughts about ransomware that would basically say that you need to pay...
  21. Switchable intake overcuurent limt

    Could power supply companies introduce a software setting in the power supply unit's software to allow users to control the maximum current intake before the primary side overcurrent protection kicks...
  22. Another tale of bad power

    Speaking of bad power, I faced power failures as frequent as once a week on occasion at Mississippi State University somewhere from 2001 to 2005 when I was getting my undergraduate degree. The local...
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    Maximum amperage for EPS12V and PEG connectors

    If you look at the connector housing's listing at http://www.molex.com/molex/products/datasheet.jsp?part=active/0039012080_CRIMP_HOUSINGS.xml , it lists a maximum of 13 amps per circuit. Search for...
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    Fan side up for carpets

    If you must put your computer on a carpet (e.g. because your desk does not have room or cannot hold your computer's weight), you need to put a bottom-mounted PSU's fan side up.
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    Maximum amperage for EPS12V connectors

    First, I looked at the SSI Forum's specification for EPS12V power supplies at https://www.ssiforum.org/index.php?option=com_content&view=article&id=107&Itemid=79 under the name "SSI PSDG 2008 Version...
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