High pitched squeal (PSU?) when stress testing [Prime95]

I've finally managed to get my CPU and RAM somewhat stable and once the Self-Test 1024K starts in Prime95 I get an extremely loud high pitched noise from the PSU. Originally I played it off as coil-whine which this PSU has always been plagued with, but I'm doubting whether that is it and if it's something more serious.

I'm getting mixed messages from another thread:

The PSU is a Corsair TX650. I was planning on changing it out sometime soon for a fully modular PSU anyway, but do I need to do it immediately?

Any response is appreciated, thanks in advance.
6 answers Last reply Best Answer
More about high pitched squeal psu stress testing prime95
  1. A good working PSU will not make such noise, so it will be better if you replace it ASAP.
  2. I would still say it's coil whine , just getting worse under prime 95 stress.

    I would replace it , in the near future , it will only get worse.
  3. Ok thanks. I'm now considering whether to continue the prime95 test, or just replace it right away with this

    Is that a good choice? I was looking for fully modular but it seems I'll need to settle for semi.
  4. Best answer
    Good choice , I would replace it as soon as possible.

    Here's another great supply:

    650w \ FULL Modular \ Gold Certified.

    PCPartPicker part list / Price breakdown by merchant / Benchmarks

    Power Supply: EVGA SuperNOVA 650W 80+ Gold Certified Fully-Modular ATX Power Supply (£81.18 @
    Total: £81.18
    (Prices include shipping, taxes, and discounts when available.)
    (Generated by PCPartPicker 2014-01-05 18:35 GMT+0000)
  5. And it's only £8 more... I guess I'll go for that. Thanks for the help. :)
  6. It's a great PSU made by FSP , it's worth the extra £8 .
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