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AMD Announces Four Ryzen CPUs Spanning 4-Thread to 16-Thread

Category: CPU's
Posted: 12:55PM
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It appears last week's announcement of new Athlon and Ryzen Pro CPUs from AMD was not enough as today AMD has announced four new Ryzen CPUs, from the Ryzen 3 2300X to the Ryzen 7 2700E. Starting with the lowest product number, the 2300X is a 4-core/4-thread chip, so we do not have SMT here, but we do have a base clock of 3.5 GHz and a boost of 4.0 GHz. Interestingly, according to Anandtech it and the Ryzen 5 2500X, a 4-core/8-thread chip, both use a single CCX, instead of two with half the cores disabled. The Zeppelin die used in the Ryzen CPUs all feature a pair of CCX's, which each hold four cores, and while previously we have seen AMD disabling cores symmetrically between the CCX pairs (2+2, 3+3, and 4+4), this is no longer the case. While both the 2300X and 2500X have the same 4.0 GHz boost, the 2500X has the higher base clock at 3.6 GHz. They also both have the same 65 W TDP. By using only one CCX, this means the L3 cache will be only 8 MB instead of 16 MB, but AMD is still claiming speed gains over the previous generation, perhaps thanks to the improvements offered by Zen+ and the removal of inter-CCX latency. Both chips support DDR4 2933 and neither will come with a cooler.

Moving up to the Ryzen 5 2600E, we have what looks to be a processor meant for greater energy efficiency. It is still a 6-core/12-thread chip, like the other Ryzen 5 2600 CPUs, but has a TDP of just 45 W. Its base clock is 3.1 GHz and its boost is 4.0 GHz. At the top of these new processors is the Ryzen 7 2700E, which has 8-cores/16-threads but with a base clock of 2.8 GHz and a boost of 4.0 GHz. The TDP for the 2700E is 45 W TDP, like the 2600E. Neither of these E parts will support Precision Boost Overdrive, which allows the power limits for the chips to be increased for greater performance, while there is still thermal headroom.

Source: Anandtech



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