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Thursday | January 21, 2021
Overclocking Ryzen 3 3100/3300X on the X570/B450

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

OC of the Ryzen 3300X in watercooling on B450:

Big topic of discussion on our discord since several weeks with the performances of the B450 chipset. As a reminder, the B550 chipset has been announced and should arrive at the end of May, beginning of June. So I took the initiative to order a copy of the MSI Tomahawk MAX which seems to be one of the favorite models of B450 users. The idea will be to see if the overclocking performance remains the same as the X570 chipset.

The test configuration :

  • Motherboard: MSI B450 Tomahawk MAX
  • Processor: AMD Ryzen 3300X
  • Memory: 16 GB KFA2 HOF OC LAB Aurora RGB 4000 MHz C19 (test)
  • Cooling: custom 360 mm EKWB watercooling
  • Operating System: Windows 10 64-bit (version 1909)

CPUZ du Ryzen 3300X B450

First half surprise, impossible to activate the XMP of my GALAX kit at 4400 MHz. So I had to choose a kit with a lower frequency, it is the KFA2 HOF OC LAB Aurora RGB 4000 MHz C19 version. On the MSI site, the support of memory kits is announced up to 3466 MHz.
Regarding the bios, I used the latest one available on the MSI France website, i.e. version 3.60 dated 22/04/2020. By the way, don’t forget to update your bios regularly. This often solves a lot of problems.

First series of tests on stock frequencies:

Option d'alimentation Ryzen BalancedThe first step will be to test the performance of this Ryzen 3300X with default settings. In the bios, only the XMP profile of the memory kit has been activated with the FCLK frequency set to 1800 MHz.
At the operating system level, I have 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 MSI Tomahawk, this is Command Center Lite.
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.

Résultats Ryzen 3300X à stock sur B450

No unpleasant surprises, the scores remain in line with those obtained on our Asus X570 motherboard, the slight discrepancies can be attributed to the memory which has a lower frequency.

The overclocking of our Ryzen 3300X:

Option d'alimentation Ryzen eleveeAs 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 volt. The idea is to test the stability on several runs under Cinebench R15. Then, I increase by steps of 100 MHz while checking the stability. If it is not the case, I increase the voltage in 0.5 volt steps.
I also changed the power profile in Windows 10 to “High Performance”.

In order to modify the voltage and the multiplier coefficient on the fly, I use the MSI Command Center Lite software. Depending on the brand of your motherboard, this software will be different. Here are the results that I obtained as well as the frequency necessary to ensure stability on three consecutive runs.

Résultats Ryzen 3300X en overclocking sur B450

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, …).

Ryzen 3300X en overclocking sur Cinebench R20 B450

Same observation as for the tests at the stock frequency, the overclocking performances are similar. 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

Memory overclocking:

This is not new, the B450 does not have the same overclocking capabilities as the X570 chipset. The arrival of the new B550 motherboards should improve this point. In the meantime, I was able to reach either 4000 MHz 12-11-11-28 at 1.90 volt or 4266 MHz in 14-13-13-28. The frequency limit is around 4533 MHz.
On the other hand, impossible to use an FCLK frequency of 1900 MHz (while yes on the X570) and also impossible to activate the 1T.

Overclocking mémoire sur le chipset B450

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