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Benchmark for buying a used CPU?

IanDrexP

I am planning on buying a used CPU from my local craigslist and classified ads. I was wondering what tests can I run to make sure the CPU is in top condition before making the purchase... 20 passes of Intel Burn Test at max stress level good enough? It probably should not be more than 2 hours. Any more than that and it feels like I am living at the guys place. LOL

 

EDIT: It will only be for a locked CPU.

Echelon Mk 2.11 

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  • Processor: Intel Core i5-6500
  • Cooler: Cryorig H7 (With a 120 mm Thermaltake Riing RGB)
  • Motherboard: MSI B150M Bazooka Plus
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To be honest I don't even think it would have to pass 20 times. I think if it was to crash it would probably do it from 1-5 tests. You could run Intel Extreme Tuning Utility for like 10-20 minutes too.

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Aida64 for 10-20 minutes.

So CPU, FPU and cache?

Echelon Mk 2.11 

Spoiler
  • Processor: Intel Core i5-6500
  • Cooler: Cryorig H7 (With a 120 mm Thermaltake Riing RGB)
  • Motherboard: MSI B150M Bazooka Plus
  • Memory: 16 (2x8) GB DDR4 Kingston HyperX Fury (Black)
  • Video Card: Sapphire NITRO R9 390 (Stock)
  • Storage:  1 TB Western Digital Blue
  • Power Supply: 520 W Seasonic M12II Evo (with custom extensions and cable combs)
  • Casing: NZXT S340 Elite (Matte Black)
  • Fans: 2x 120 mm & 3x 140 mm Thermaltake Riing RGB
  • Display: 22 " LG Flatron L227WTG-PF LCD (OCed to 76 Hz)
  • Keyboard: Logitech K120
  • Mouse: Logitech G402 Hyperion Fury
  • Mousepad: SteelSeries QcK
  • Operating System: Windows 10 Pro (64-bit)

 

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Prime95 1h

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Prime95 1h

No Prime95 puts the cPU under unreasonable stress and is not trustworthy.

 

 

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To be fair either a CPU will work or it wont. Its VERY rare to get a CPU that will get all the way to Windows and still have issues (excluding bad overclocks).

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No Prime95 puts the cPU under unreasonable stress and is not trustworthy.

Nonsense.  Prime95 AVX2 (and ONLY v 28 and above, 27.9 is still perfect for Haswell) only affected first gen Haswell CPUs and remains the gold standard of CPU stability stress tests.  Don't listen to the FUD the internet likes to rehash over and over again.

QUOTE ME IN A REPLY SO I CAN SEE THE NOTIFICATION!

When there is no danger of failure there is no pleasure in success.

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No Prime95 puts the cPU under unreasonable stress and is not trustworthy.

Unreasonable Stress?  :rolleyes:

I use it for Years and never had any Issues with it.

CPU i7 6700k MB  MSI Z170A Pro Carbon GPU Zotac GTX980Ti amp!extreme RAM 16GB DDR4 Corsair Vengeance 3k CASE Corsair 760T PSU Corsair RM750i MOUSE Logitech G9x KB Logitech G910 HS Sennheiser GSP 500 SC Asus Xonar 7.1 MONITOR Acer Predator xb270hu Storage 1x1TB + 2x500GB Samsung 7200U/m - 2x500GB SSD Samsung 850EVO

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So CPU, FPU and cache?

Any stress testing will do.

However I highly suggest prior that overclock the tested CPU.

 

That is because I had a lot of AMD CPUs tested which had their pins bent and then straightened. 

I've seen a lot of times that a CPU without any OC performs flawlessly in a stress test.  However that CPU which had pins straightened had issues when stress testing with mild overclock.

Dunno if that would help with Intel CPU's :)

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In a non-overclocking situation it will either run, or it wont.  Fifteen to thirty minutes of pretty much anything - iXTU, AIDA, Cinebench, 3DMark, etc.   Should tell you whether it has issues with operational heat levels.   You might even have some games with built in benchmarking (e.g. Crysis 3) and if that is a game you commonly play, then that is about the best test there is.

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