Overclocking Ryzen 3 3100/3300X on the X570/B450

OC of the Ryzen 3300X in watercooling on X570:

The test configuration:

• Motherboard: Asus Crosshair VIII Impact (bios 0017) (test)
• Processor: AMD Ryzen 3300X
• Memory: 16 GB GALAX HOF OC LAB 4400 MHz C19 Water Cooling (test)
• Cooling: watercooling custom 360 mm EKWB
• Operating system: Windows 10 64 bits (version 1909)

Attention, I encountered a small problem with the Ryzen 3300X, the reason for which I still don’t know. For my tests with the Crosshair VIII Impact, I have been using the AGESA 1.0.0.4 based bios 0050 for a long time. For an unknown reason, with this bios and the 3300X, I can’t activate the XMP profile. The motherboard simply refuses to boot. In order not to falsify the results, I installed bios 0017, also based on AGESA 1.0.0.4 and whose only difference is to add two new voltages for memory overclocking. In short, I still haven’t identified the problem.

First series of tests at stock frequencies:

The first step will be to test the performance of this Ryzen 3300X with default settings. In the bios, only the XMP profile of my memory kit has been activated with the FCLK frequency set to 1800 MHz.
At the operating system level, I opted for the “AMD Ryzen Balanced” power profile as recommended by AMD.

For this first series of tests, I will use four benchmarks which are Cinebench R15, Cinebench R20, Geekbench 3 and Geekbench 5. On the software level, you will need CPU-Z, Core Temp 1.15.1 and the overclocking software compatible with your motherboard. Here, for our Asus Crosshair VIII Impact, it is TurboV Core.
Here are the results I obtained by putting for information the CPU temperature measured by Core Temp. The temperature of the liquid in my cooling loop was between 22 and 23°C.

During the different benchmarks, I could observe that the frequency rises and reaches on the four cores a frequency of 4291 MHz. The Boost frequency announced by AMD is therefore well respected.

The overclocking of our Ryzen 3300X:

As usual, I will start the tests by choosing, via the BIOS, a 4 GHz frequency applied on the 4 cores. The voltage to start my tests is set to 1.2 volts.
The idea is to test the stability on several runs under Cinebench R15. Then, I increase by steps of 100 MHz checking the stability. If it is not the case, I increase the voltage in 0.05 volt steps. I have also changed the power profile on Windows 10 to “High Performance”. This modification allows to keep the 4 cores constantly at the clocked frequency.

In order to modify the voltage and the multiplying coefficient on the fly, I use the Asus TurboV Core software. Depending on the brand of your motherboard, this software will be different.
Here are the results I obtained and the frequency needed to ensure stability on three consecutive runs.

This test method allows you to have “an idea” of the overclocking potential of your processor. For H24 overclocking, the maximum frequency should be lowered to ensure perfect stability. As I keep telling you, you don’t need Prime95 or OCCT for hours. The stability is specific to each user according to his use (games, benches, video software, …). As you can see, the score at 4.3 GHz is almost identical to the one obtained with the @stock processor, which shows that the 4 cores reach 4.3 GHz by default.

Cinebench R15 is the only benchmark I could run at 4500 MHz for a voltage of 1.35 volt. I had to lower the frequency to 4450 MHz for Cinebench R20 and Geekbench 3.4.2

Our copy of the 3300X can’t do as well as the 3100. Both processors are within the limits of air/water overclocking architecture. One can easily imagine H24 overclocking at around 4.3/4.4 GHz. Note however that at the same frequency, the Ryzen 3300X heats up less and this may be due to its internal architecture that I mentioned on the first page.

Memory overclocking:

I wanted to make sure that I was able to upgrade my GALAX kit to 4800 MHz 14-13-13-28 with this Ryzen 3300X. No problem to pass the tests with this memory frequency and even with an FCLK at 1900 MHz. These two new 4 core processors are really a good deal for those who don’t need more cores.