When AMD announced that 7 nm Ryzen would show up at CES 2019, sharp-eyed readers immediately noticed that there was room for the two Chiplets 7nm, not one. The possibility of a 7-core 7 to 7-core Ryzen built on 7 nm instantly became the least well-kept secret of the product family. When AMD provided additional details on the Computex processor, however, the product stack appeared to exceed only 12 cores – less than the 16 theoretically possible.
AMD proved that the latest product of the new Ryzen 3000 family at 7 nm was already delayed to be a little fine tuned for E3. Although this processor will not launch in July, it will bring 16 full cores to the Ryzen family of workstations. Meet the Ryzen 9 3950X.
In May, when the speed of a 16-core Ryzen engineering sample has passed, we have note that the relatively low clocks of the chip (base of 3.3 GHz, amplification of 4.2 GHz) could result from the maintenance of lower ES clocks than those of the shipping parts (common practice in l & # 39; 39; industry) or the fact that AMD wanted to limit the TDP of the coin to keep it within the limits of its AM4 capabilities. We can see both objectives reflected in the final specifications of the product.
Remember that TDP is usually calculated based on clock, not clock amplification, while AMD processors have been better at staying at their TDP state, this is not an absolute requirement since boost clocks are frequencies of the company do not promise will be available in all situations.
If you look at the magnitude of the gap between AMD's base and boost clocks across its entire product portfolio, you'll notice that low-end chips with a smaller number of cores maintain a gap of 1.16 times between the base and the boost clock. The Ryzen 3600, 3600X and 3800X all have a gap corresponding to this size. The Ryzen 7 3700X has a slightly larger gap to differentiate itself from the Ryzen 7 3800X, giving a gap of 1.22x. The 12-core Ryzen 9 3900X has a similar specification. The Ryzen 9 3950X, on the other hand, has the biggest difference between the base clock and the clock boost, with a difference of 1.34 x between the two parts.
The implication is that the Ryzen 9 3950X probably stands at a lower frequency than a higher core load compared to the other components, in order to stay within the limits of its TDP of 105 W. This, at in turn, could indicate that AMD will retain a 16-core Threadripper processor in the stack of products when it will launch these parts later. The Threadripper TDPs have always been much larger than Ryzen (the existing 2950X is at 180W), which could give AMD more leeway to raise the base clock by a few hundred MHz.
There may also be sizing differences in the applications due to the limited amount of memory bandwidth available for the 16 processor cores. The L3 cache doubled with Ryzen 3000 will help highlight the bandwidth pressure, but we will have to test it to assess its impact on performance. All we can say at the moment is that it would be surprising if 8C – 16C scaling is less efficient on a Ryzen 7 platform than on a Threadripper platform, at least in some cases. applications.
AMD announced at E3 that the 3950X would be available in September for $ 749.