AMD Ryzen 9 5900X Processor (Socket AM4) PLEASE READDESCRIPTION. 

This is a used AMD Ryzen 9 5900X.  It does not work with Precision Boost Overdrive (PBO) enabled. 

I bought this as I’m not an overclocking expert and theseller indicated it just needs PBO disabling, but this was not accurate.  The processor needs PBO disabling in the Bios and must be manually overclocked to 4.3ghz on all cores permanently.    I successfully did this with Ryzen Master software and ran stress tests and left the PC running for afew days and it stayed stable.  Other settings are untested, and the sale is on the basis of using 4.3ghz manual overclock to function.  All other settings are at buyer’s risk.  As I’m not an expert on overclocking, it’s quite possible you can get other morefavourable settings to work, but I can’t guarantee any other settings. 

I’ve priced this to reflect the power it gives when in this state.   Warnings aside, this clock speed and the number of cores does offer a lot of power for the price.   Do not buy unless you are familiar with how to overclock manually.  I paid much more and feel a bitof a mug.  I hope my own description ismore accurate than the other sellers. 

Please check your motherboard is compatible with this chipand that the Bios has the version needed to support this processor. 

With the restrictions on functionality, please only buy if you have the experience to set clock speeds as this is a no returns sale.

No fan or original packaging supplied.