Is it possible to check if CPU's memory controller is faulty

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WodaPoParowkach

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Aug 2, 2015
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I recently bought second-hand Gigabyte Z77X-D3H with Core i5-3570K processor with stock cooler (already mounted by seller). It all seemed to be okay but when I launched resource-demanding game my computer started to act weird. Random crashes, freezes but it was not very frequent so I didn't expect anything bad. But when I tried to play GTA V it became literally unplayable. I mean it performs very well, I have around 50-60 fps on utlra settings but it always freezes shortly after launch.

I launched Windows Memory Diagnostic Tool and it detected errors. I was sure it's fault of my brand new memory sticks I bought 2 days ago (1866mhz CL8) so I swapped them with old ones (1333mhz CL9) that I used successfully for a few years and launched memory diagnostic tool again and... it also found errors. GTA V also crashes in the same way on these old sticks as on the new ones.

I am almost sure now (but I will soon check these new sticks on other computer to be 100% sure) that it is a fault of motherboard or memory controller in my CPU. How to find out what exactly is wrong here? I don't want to buy new motherboard when I'm not sure if it's not a CPU fault... Please help me I'm stuck here.

My OS is win 8.1 with the newest updates installed.
 
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swilczak

swilczak

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Apr 12, 2012
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It's very possible that the other memory sticks are bad too. Just removing them from the PC can cause damage from static. I don't think there's any way to test the memory controller. You would just have to put a different cpu in the motherboard and see if the issue is resolved. Bad memory sticks are a very common problem though. I've ran into that issue more times than I can count.
 
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WodaPoParowkach

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Aug 2, 2015
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Thank you for your answer swilczak. I have just put these new sticks into a different computer (also with 3570K nb) and ran test and it detected no errors. Also I am always very careful not to damage electronics I touch with static charges.

I don't think it can be memory's fault. It's sad to hear that it's not possible to test CPU's memory controller itself.
 
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