Now there are two ccxs in AMD's Zen architecture CPU, which add up to eight cores. Many people think that AMD's six cores are made by shielding defective cores from defective ones. However, in fact, the 7Nm process of TSMC now has a high yield. Now the six core processors on sale can't be shielded by defective products, and more importantly, amd intentionally shields good cores The heart came out.
According to a post from reddit, if the AMD Zen 2 chip produced by TSMC with 7Nm process can work normally with 8 cores, its yield rate is as high as 93.5%, and such a high yield rate is enough to enable AMD to obtain 749 8 core chips from a 300 mm wafer. If all the 32 core epyc processors are produced, a 300 mm wafer can produce 187 32 core epyc processor.
Now, among the third-generation sharp dragon processors that AMD is selling, the sharp dragon 9 3950x, sharp dragon 7 3800x and sharp dragon 7 3700x use complete 8-core chips, while the sharp dragon 9 3900x and all sharp dragon 5 use two core chips that are shielded. From the perspective of good product rate, where amd comes from so many defective cores is bound to be sold by active shielded cores.
Of course, even with such a high yield, AMD's third-generation sharp dragon processor still has a lot of shortage problems, which can only be attributed to TSMC's 7Nm production line is too hot. In addition to AMD, there are a lot of manufacturers competing to use it, so the shortage problem can only be solved when TSMC improves 7Nm production capacity.