Slight CPI difference between AMD filing and MSI pre-Computex 2019 filing

Thanks to MSI's presentation days before Computex 2019, we know that AMD has managed to improve the IPC by 2% in the AMD Ryzen 3000.

After the launch of the AMD Ryzen 3000 processors, one question arose above all: the TDP. It seemed pretty weird to us that the Ryzen 7 3700X had a 65W TDP, while the Ryzen 7 3800X had a 105W TDP. The two processors have 8 cores and 16 threads and the frequencies are very similar. But doubts increased after the Ryzen 5 3600X, with 6 cores and 12 threads with a TDP of 95W, was unveiled. Now the guys from Wccftech they have noticed that MSI indicated one CPI and AMD in its presentation indicated another CPI.

IPC discrepancies between MSI and AMD filing

The IPC is the 'instructions per cycle' and is increased in the new Ryzen 3000. We have no doubt that there is an increase, otherwise it would be absurd, but there are discrepancies. A few days before the presentation of AMD, MSI did a live showing their new motherboards. In that video they showed a slide showing a 13% increase in the CPI. Lisa Su during her presentation indicated that Zen2 increases the CPI by 15%

I'm not saying that Lisa Su lies and MSI lies. Possibly MSI data refers to an engineering processor and AMD refers to a commercial processor. The 2% difference between IPC masters would be justified in this way.

Although it is a rather curious fact, it is not necessary to look three feet to the cat either. It is simply a minimal and logical variation between an engineering version and a commercial one. Perhaps if the difference had been greater, we could already have doubts about what happened, but 2% falls within the logic. This data is positive for users, because in the end we will get a little more performance compared to what was initially 'expected'.