The best software to test overclock stability


RAM overclocking

RAM overclocking is the least popular among PC users simply because the process is extremely tedious and can often result in no gain and a lot of instability. RAM itself is quite temperamental, so making sure your RAM is stable after you overclock is a must.

First, you should try a few runs of the AIDA64 Cache & Memory Benchmark to probe things. This is a lighter benchmark that will wrap up pretty quickly and give you a general idea if you are already in the safe zone.

If you have passed the 2-3 passes of AIDA64, the next step depends on whether you can spend some money or not. If you don’t mind paying $10, get the Karhu RAM test, otherwise you should do a nightly run of memtest86.

If you’ve done your overclocking right, you won’t get any errors when running the benchmarks, but if you’re experiencing any sort of instability, you’ll need to go back to the drawing board and work out your values ​​from scratch.

CPU overclocking

CPU overclocking is extremely popular and with the latest Intel/AMD CPU models you also have access to automated tools (either in Windows or in your BIOS) that make overclocking as easy as possible.

Be it manual overclocking or automated overclocking, it is always recommended to run benchmarks to test the stability of your CPU. So here’s what you need to do when you’ve dialed in your values.

The easiest step you can take is to run a Cinebench benchmark, either R20 or R23. It’s not the heaviest CPU benchmark but it’s a good tool to start the process because if your OC is unstable, your Cinebench or PC will crash.

cinebench r20

If you can run a few consecutive cycles of Cinebench, it’s time for the real test of your OC, namely Prime95. Prime95 is the most popular tool for validating CPU overclocks because it pushes your CPU to the extreme limit (my 5600X with PBO2 and curve optimizations push 125W in Prime 95).

If you want to know if your CPU overclock is solid, run a few hours of Prime95 Small FFT and it will give you your answer.

bounty 95

Usually, unstable OCs crash early on, so you’ll know if you’re ready for Prime95 or not. If your CPU survives the first 20 minutes of absolute torture, chances are your OC is stable and your CPU can stay under Prime95 load for hours without crashing.

GPU Overclocking

GPU overclocking is probably the most popular method of increasing your FPS and the most attempted overall. There are many tools you can use to check the stability of your OC. So here is a list of those that are considered the most trusted in the PC community.

The first 2 benchmarks come from Unigine and are the Heaven benchmark (older) and the Overlay benchmark (newer). Both are great tools for testing your GPU’s stability, but currently most people use the overlay because it can really push your GPU.

overlay mark

The other set of benchmarks that many people use to validate their OCs are 3DMark Time Spy, Time Spy Extreme, and Port Royal for real-time ray tracing. 3DMark is paid software but you can also download the Time Spy benchmark separately for free.

3dmark landmarks

However, the free version is just a demo, so I’d recommend sticking with the Unigine credentials or buying the full 3DMark app. It is worth it because you have plenty of customization options when it comes to your credentials and it also runs a CPU test.

3dmark processor test

The final option for GPU testing is FurMark, an old crowd favorite when it comes to GPU stress testing tools.

You can use any of these tools to test the stability of your OC, but I recommend using at least 2 to be on the safe side, as different benchmarks and tests can push your GPU in different ways.


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