How to Use RivaTuner to Monitor Gaming Hardware Performance

Rivatuner Cover

The freedom to push your computer well beyond the stock specifications is the best part of PC gaming. If you have been facing niggling hardware troubles or otherwise want to learn how to use advanced overclocking tools to optimize your gaming setup without necessarily overclocking your components, we will show you how to make use of Riva Tuner Statistics Server (RTSS) to monitor your gaming hardware performance.

What Is RTSS?

RivaTuner Statistics Server was initially a companion to the RivaTuner open-source GPU overclocking tool designed for Nvidia GPUs, with limited support for ATI/AMD hardware. However, it has now become a standalone tool offering hardware and frame-rate monitoring capabilities, with additional support for frame limiting and video capture.

Rivatuner Interface

RivaTuner itself has since been assimilated into virtually all major GPU overclocking tools such as MSI Afterburner, EVGA Precision X, and ASUS GPU Tweak. This guide is based around MSI Afterburner, which comes bundled with RTSS. Here’s what you need to do to get started.

Install and Configure RTSS

1. Download the latest stable release of MSI Afterburner bundled with RTSS.

2. Install the tool and be sure to select RivaTuner Statistics Server when you are prompted to choose components during the installation. It’s not possible to monitor critical hardware parameters without RTSS.

3. Open MSI Afterburner and dial in the overclock settings for the GPU. Alternatively, you can leave everything unchanged at the default settings and head straight to configuring RTSS by clicking on the Settings button represented by the gear icon.

4. Navigate to the Monitoring tab in the Settings window. The tab contains a list of hardware parameters relevant to the CPU and GPU.

Rivatuner Settings

5. Select the hardware parameter you wish to monitor. Make sure the checkmark beside it isn’t greyed out. Monitoring these parameters consumes CPU time, so choose what you need if you are concerned about the performance of RTSS.

6. With the desired parameter highlighted, tick the first checkbox below the list of hardware parameters named “Show in On-Screen Display.” The drop-down menu next to it allows you to choose whether you want this data displayed as text, a graph, or a combination of both. Repeat this procedure for all parameters you want to monitor.

7. Click on the OK button to save these settings. The next time you run a game, the selected parameters will be overlaid on the top left of the screen.

Rivatuner Overlay

Using RTSS to Monitor Hardware Performance

RTSS comes with a long list of features and capabilities, but we are primarily interested in the capability to monitor hardware parameters to improve the gaming experience. That involves keeping an eye on numerous statistics involving thermal, utilization, power, voltage, and clock speeds for the CPU, GPU, and memory subsystems. The following lays out the parameters you should take note of.

GPU Temperature

Keeping an eye on GPU temperature relative to the ambient temperature gives a good idea of the overall health of the cooling system of your graphics card. An overheating GPU is a sign that remedial measures such as GPU heatsink cleaning and thermal paste reapplication is required. Monitoring the Fan Speed to verify proper operation along with using aggressive fan profiles should also help.

Modern GPUs tend to take manual overclocking control away from users and instead base it on thermal headroom. Getting the most out of your GPU is no longer restricted to prevent thermal throttling, but to ensure that the GPU runs as cool as possible. Case in point: both Pascal and Turing Nvidia GPUs provide loads of extra boost clock speeds with every five-degree drop in temperature. The Temperature Limit parameter is also a great means to know if your GPU performance is hit hard on account of thermal throttling.

CPU Temperature

The same reasons apply to CPU temperatures as well. However, processor clock speeds aren’t as temperature-dependent as that of GPUs. Thermal throttling is what we are looking for here. Be sure to use the CPU1 temperature-monitoring option. This is the accurate temperature reported directly from the CPU die. The option labelled CPU temperature is reported from software and isn’t quite accurate.

Rivatuner Monitoring

CPU and GPU Usage

These parameters are extremely important. Depending on how optimized a game is, CPU utilization will range from 40 to 80 percent for most gaming rigs. However, if your CPU is at 100 percent, that means it is the weak link and that your GPU is sitting idle, waiting for the CPU to finish its job. GPU utilization will be less than 100 percent in this case. You will get much better performance by upgrading to a more powerful CPU.

The converse holds true for GPU as well. However, your GPU should hit 100-percent usage under normal conditions. Otherwise, it is being bottlenecked by the CPU.

Memory Usage

This refers to the video memory (VRAM) and shouldn’t be confused with the RAM Usage option which pertains to the main system memory. Certain game settings, such as shadow quality, ambient occlusion, multi-sampled AA, and anything that uses normal maps will require extra VRAM. Once VRAM usage exceeds the max installed memory on your GPU, the framerate will drop catastrophically.

Some rare games, such as the new installments in the Resident Evil series, warn of potential memory bottlenecks, but for most other games, keeping an eye out for memory usage is critical if you experience sudden framedrops and/or microstutters.

BUS Usage

Consider keeping an eye on this parameter if your framerates drop precipitously without any explanation. BUS Usage is the utilization of the PCIe bus, which is the interface governing the communication link between the CPU and GPU. No current GPU is capable of saturating the modern PCIe 3.0 x16 bus, so this parameter should register low percentages under full load. If BUS Usage reads 100 percent, you’re looking at a problem with the PCIe bus.

Rivatuner Overclocking

This can be caused by a number of factors ranging from driver issues, incorrect BIOS setting, and even debris in the PCIe slot or an incorrectly-seated GPU preventing optimal electrical contact between the GPU and the motherboard. This problem is also caused by cheaply-made PC cases with misaligned rear I/O mounts that cause GPU seating issues. This can be further verified by running a GPU info/diagnostic tool such as GPU-Z.

Core/Memory Clocks

Once you know the maximum clock speeds of your CPU/GPU core and memory, any discrepancies therein are signs that the components are either experiencing thermal throttling or facing underutilization due to other underlying problems. This parameter also helps diagnose memory issues. Memory cooling on most GPUs is weak, so overclockers should watch memory clock speeds closely for signs of thermal throttling and dial down memory overclocks to prevent damage to the GPU.

No Load/Power Limit

Extremely useful for Nvidia laptop users. This will tell you if there’s some problem with the power-saving feature of the GPU. If no load limit shows while you have poor framerate, there’s some issue with the GPU. It could be the PCI-E bus or some power-saving feature, but you at least know what to troubleshoot. Power limit is important for overclockers. This will tell you whether the CPU/GPU is being throttled because the power delivery subsystem cannot provide enough wattage to hold the overclocks.

No Load/Power/Voltage Limit

These nifty monitoring parameters are a godsend for diagnosing odd GPU behavior and performance issues. No Load Limit basically tells you when the GPU is idling due to lack of processing load. You know there’s something amiss with your GPU when the No Load Limit pops up during actual gameplay while causing a severe drop in framerate. For example, Nvidia laptops using hybrid GPU configuration will hit the No Load Limit if the onboard GPU is used instead of the discrete GPU.

Power and Voltage Limit indicators are relevant to overclockers. Hitting these limits is a sign that your GPU is being throttled because the power delivery subsystem cannot provide enough wattage to hold the overclocks.


Monitoring your hardware performance gives you a fair idea of the overall health of your system, which is critical to diagnosing any performance issues and underlying hardware troubles in time and without much heartburn. RTSS, along with MSI Afterburner, is a potent tool in the hands of a PC gamer who knows where and what to look out for. Now it’s time to give it a spin on your gaming rig.


Nachiket Mhatre Nachiket Mhatre

Growing up, Nachiket had a penchant for disassembling household electronics and appliances; most of which couldn’t be reassembled successfully. His parents didn’t approve. These days, he leverages his lifelong pursuit of dissecting gadgets to write about technology. His parents still don’t approve.


  1. Hi Nachiket, thanks for the awesome article! Really appreciate this. Btw, I think I might have spoken to you a long time ago on a forum for the Irish band The Corrs. If you once made an amazing photo frame from cardboard as a project, and once recommended IrfanView (which I still use to this day) then it must be you. I never usually comment but I recognised your name (I think I did anyway lol). Either way, hope you are well :)

  2. Guilty as charged :)

    That was two decades ago. It’s amazing that you still remember all that. As for Irfanview, that makes it the two of us. In fact, all the photos in this article have been edited in Irfanview. You still can’t beat its JPEG compression efficiency.

    This genuinley bought a smile to my face. So thank you for saying hi after such a long time. It’s a small world after all.

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