Review : MSI MPG X670E Carbon Wifi

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CPU overclocking:

Now that we have our 6400 MT/s CL30 memory profile, let’s move on to CPU overclocking. So, considering the temperatures obtained at the original frequency under Cinebench R23, 85°C, while we are under a custom watercooling, the overclocking margin may be quite limited. At the same time, this is good news since our Ryzen 9 7950X will offer excellent performance from the start.

Currently, to overclock our processor, we must either do it directly via the BIOS or via the AMD Ryzen Master software. It is the latter solution that we have chosen for these first tests.

Protocol:

Before starting, it is necessary to have one or more reference scores with your processors at stock frequencies , i.e. without having made any modification except having activated the XMP/EXPO profile. It is also very important to have a sheet of paper at hand that will allow you to note down all the tests that you will perform as well as the results or failures. Personally, I have hundreds of sheets of my tests on which I sometimes return to know how the processor behaved on such motherboard or in such test conditions. My own little bible.

For H24 overclocking, it will of course be necessary to take more time to fine-tune the voltage in order to provide it with the minimum necessary, but also to adjust each core independently if you want to take advantage of the maximum performance.

Load-Line Calibration:

A little tour through the ” Load-Line Calibration ” option in the BIOS in order to adjust this parameter as well as possible to keep the voltage as constant as possible. The idea is not to have too much difference between the selected voltage, the voltage measured at rest and under load. As usual, on an MSI card, we opted for a Mode 2 since it is for us the curve that seems to be just a hair above the horizontal.

Ryzen 9 7950X Operation:

Once again, it is via the OS that we will start our overclocking tests using AMD Ryzen Master. It is a tool that can be used very easily and is therefore very intuitive provided that you have a good understanding of the structure of your processor and here more particularly that of the Ryzen 9 7950X.

The Ryzen 9 7950X has two CCDs. Each CCD has a single CCX which has 8 cores. In the case of our 7950X, none of the CCX cores are disabled so that there are 8 cores per CCD and therefore 16 in total. The idea is to see how the CCDs behave when all the cores are used. We saw on page 5 that the CCD0 was more efficient than the CCD1. It will therefore be possible via Ryzen Master to try to push this one higher than the other.

Finally, you can also decide to vary the frequency of each core. The one with a star is the one that performs best of the 8 and the second best is marked with a disk. To overclock, go to profile 1 and select manual overclocking. You can then control either each CCX or each core independently.

Overclocking in different stages:

We will first start the tests at 5000 MHz on the two CCX with a voltage in Ryzen Master of 1.15 volt which when Cinebench R23 multi is launched is fixed at 1.10 volt. The idea is then to test the stability on several runs of Cinebench R23 multithread. If it’s stable, I increase the frequency by 100 MHz while checking the stability again. If the benchmark crashes, I increase the voltage slightly in order to regain a stability allowing to run the benchmark. The objective is to get a “quick” idea of the maximum benchmarkable frequency.

After a series of tests, we were able to benchmark at 5600/5400 MHz (CCD0/CCD1) and we also took the opportunity to quickly switch Geekbench3 to 5600/5400 MHz.

We get an excellent score of 41465 points under CinebenchR23 with a temperature of 84°C while at stock we had a score of 39223 for 95°C. As for Geekbench 3, the single core score is lower since our cores are at 5.6 GHz against 5.85 GHz at stock but the multi core score increases to 117111 points.