Ryzen 5 1600x and 1600 processors with 8 working cores reported

Several users have reported having purchased Ryzen 5 1600X and 1600 processors that had 8 active cores right out of the box. Remember that all Ryzen processors are manufactured from the same 8-core Summit Ridge die and from there cores are deactivating in the different ranges.

Some Ryzen 5 1600X processors have 8 active cores

Several Ryzen 5 1600X CPU owners installed their processor and when booting Windows for the first time they were surprised to find that they had 8 cores and 16 threads running. The CPUs had the same clock speed of 3.6GHz and 4.0GHz as the 1600X, but they had 8 cores and 16 threads instead of 6 and 12 respectively. This makes them Ryzen 7 1800X processors.

Other users reported the same with Ryzen 5 1600 models. All the unlocked chips were made in week 36 of 2017 in Malaysia. You can decode the CPU batch code with a reddit rigred user-made guide to find out if your processor is part of the same batch.

AMD Ryzen 5 1400 and AMD Ryzen 5 1600 Review in Spanish (Analysis)

The reason for this situation is not yet clear, each CPU is tested to be identified just before it is shipped. This may have been a decision made simply as a result of increased demand for the Ryzen 5 1600X and 1600 that led AMD to use some of its 8-core arrays to meet demand. This gives new meaning to the silicon lottery.

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