Question : Problem: HOW TO TEST RAM

Dear Experts,
Is any hardware device that makes tests to RAM and make sure there are no errors in it. In fact I'm opening a new computer service center soon and thought about this device or even software.

Also guys please if you know any good hardware for my center tell me please.

Thank you,
Mob

Answer : Problem: HOW TO TEST RAM

check this site out :  http://www.uxd.eu/index.php?lang=1
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