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I have

  • an old P4 with 2 UDMA HDD (totalling around 300G of storage, with a decent amount of real-estate yet to be used)
  • purchased a replacement m/b + processor for my upgrade
  • intend to move one of the UDMA HDD into the new computer

Technology has moved since the last computer.

Searching online for SMPS, how do I determine from the specification that the SMPS can power both SATA, and IDE devices? What keywords/description/specification should I actively seek?

As an aside - is it acceptable to use both IDE and SATA devices, or is this a no-no?

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up vote 1 down vote accepted

You want to get a power supply that has SATA power connectors in addition to normal PATA "Molex" connectors:

enter image description here

While it is possible to get adapters to convert from Molex to SATA power connectors I have never mamaged to get these to work - the SATA power specification includes a +3.3v line which the Molex connectors don't provide, and while some drives will work without it I haven't found one that does so reliably.

Most modern PSUs will have both Molex and SATA power connectors.

As far as mixing the drives? There is no issue as far as hardware is concerned in doing it. The PATA and SATA both use different channels, so one won't slow the other down or interfere. Obviously you want to use the fastest drive(s) for your boot and operating system to make the system run as fast as possible, so the only possible thing to watch for is boot device order in the BIOS to make sure you boot from SATA and not PATA.

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Uh. <br/> For instance, mentions SATA explicitly but does not mention either PATA, or molex ... how does one identify that it may indeed power both drive-types? – Everyone Mar 27 '11 at 11:51
On that site they're listed as "4 pin peripheral" and that PSU has 6 of them, along with 6 SATA power connectors. – Majenko Mar 27 '11 at 12:04

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