Overclocking The Ryzen 5 2400G processor
Overclocking and tweaking then. Always invest in good hardware by the way (MOBO/PSU/Memory/Cooling), the cheaper motherboards often are not well tuned for enthusiast overclocking. Also get yourself a good power supply and proper processor cooling. Overclocking with a more core processor (it doesn't matter if that is Intel or AMD) is far more difficult than you expect it to be.
For the Ryzen 5 2400G reference review we'll use nothing more than a stock cooler.
Overclocking multi-core on a high clock frequency is relatively okay to do job, and can be best managed from the BIOS. You can also use AMD's software tool of course.
Our maximum was 3950 MHz on all four cores.
The Rave Ridge 4-core parts with one CCX are not the best overclockers (at least not our samples). During our measurements, by trial and error we found that at 1.425~1.50 Volts you will end up at roughly 3.9 ~4.0 GHz. You could apply a fixed voltage, but we do recommend a voltage offset (start with +200Mv), or even better, leave voltage at auto and find your maximum multiplier.
The Guru3D reader-base overclocks mostly from the BIOS to try and find the maximum stable limit. The generic overclock procedure for multiplier based overclocking is as follows:
- Leave base clock (bus) for what it is right now (100 MHz)
- Set the per core multiplier at a maximum of your liking:
- Example 1: 100MHz x 39 = 3900 MHz
- Example 2: 125MHz x 31 = 3875 MHz
- Increase CPU voltage; though AUTO works fine on many motherboards you can do it manually as well. Start at 1.40 volts (or voltage offset (start with +200Mv)) and work your way upwards into a state of equilibrium in perf and cooling temps.
- Make sure your processor is properly cooled by adding voltage = more heat
- Save and Exit BIOS / uEFI
What we did:
- Enable 3900 MHz (39 Multiplier)
- Apply 1.475V to the CPU
- Enable XMP on our memory kit (3200 MHz CL14)
Ryzen likes fast memory, so with this dual-channel (single rank) setup we really can recommend higher frequency memory like the 3200 MHz kit used.
Here is an example of the Ryzen5 2400G at 3900 MHz @ all cores. Here the stock cooler seems to run fine in the ~75 Degrees C range overclocked.
We have been able to sustain 4.0 GHz on all cores, but with the stock cooler everything felt too marginal hence we settled at 3900 MHz all-cores. Memory wise we had 3200 MHz CL14 stable.
Our default score was 206 second, the tweak now shaves off roughly 8 seconds of wPrime on a 1024M run.
For CB15 we are at an 820 CB default, tweaked we reach 863 CB.
For Time Spy we are at a 6392 as default, tweaked we reach 6630 points (obviously with a dedicated graphics card). The default CPU score was 3828, which tweaked is 4449.
Adding extra voltage to the CPU for the OC also has an adverse effect on the overall energy consumption. Below, the power consumption for the whole PC measured at the wall socket side. Dark black is overclocked.