How to Use GPU-Z: Complete Guide for Gamers

How to Use GPU-Z. Most people download it, look at a wall of numbers, and close it immediately.

The interface is not welcoming. There are no instructions. Nothing tells you which numbers matter, which ones to ignore, or what any of it means for your gaming performance. So the tool that could tell you exactly what is wrong with your PC just sits there collecting digital dust.

That is a waste. Because GPU-Z is one of the most useful free tools in PC gaming once you understand what you are looking at.

This guide explains every single thing GPU-Z shows you. What each number means. Which ones to watch while gaming. How to use the Sensors tab to find out whether your GPU is being bottlenecked, overheating, or simply not being used properly. And at the end, a straight comparison between GPU-Z, MSI Afterburner, and HWiNFO64 so you know exactly which tool to reach for and when.

No fluff. No padding. Just the information you actually need.

Let us start.

GPU-Z is a free, lightweight tool made by TechPowerUp that gives you complete information about your graphics card. It shows you everything from the static specs your GPU was born with, to live sensor readings updated every second while you game.

It has been downloaded over 50 million times. It works with every GPU brand. NVIDIA, AMD, Intel Arc. RTX 5090, RX 9070 XT, GTX 1060. Any card from any manufacturer. And unlike some monitoring tools, it requires no installation. Download the .exe file, run it, and it opens immediately.

Here is why it matters specifically for gaming performance:

It tells you what your GPU is actually doing right now. Not what it should be doing according to the spec sheet. What it is actually doing, this second, under real load. That difference is where performance problems hide.

It reveals thermal throttling before you notice it in your game. You might be losing 20% of your GPU performance to heat and never see it coming. GPU-Z shows you exactly when and how much.

It confirms whether your GPU is running at full speed or being held back. By your CPU, by your power settings, by your temperatures. The Sensors tab tells you immediately.

It verifies your GPU is genuine. Fake graphics cards sold online are a real problem in 2026. GPU-Z reads directly from the hardware and cross-references with TechPowerUp’s database, making fakes impossible to hide.

GPU-Z is only officially distributed by TechPowerUp. There are fake versions on third-party download sites that bundle adware or worse. Download it only from here:

Official source: techpowerup.com/gpuz

As of 2026 the latest stable version is v2.69.0. The filename should match the pattern GPU-Z.2.69.0.exe. If the filename looks different or the URL is not techpowerup.com, do not download it.

How to get started:

Step 1: Download the .exe from the official page above.

Step 2: Run it. No installation needed. GPU-Z opens immediately.

Step 3: If you have both integrated graphics and a dedicated GPU (common on laptops and some desktops), use the dropdown menu at the top right of the window to make sure you are looking at your dedicated gaming GPU, not the integrated chip.

Step 4: You will see two main tabs at the top of the window. Graphics Card and Sensors. These are the two you will use constantly. There are also Validator, Advanced, and About tabs which we cover later.

That is it. GPU-Z is running. Now let us understand what you are looking at.

The Graphics Card tab is your GPU’s identity card. It shows static information about what your card is and how it was built. These numbers do not change while you game. They are facts about your hardware.

Here is what each section tells you and why it matters:

Name The exact model of your GPU. Useful for verifying what you actually have, especially on second-hand purchases. If this shows a different model than the card you think you have, something is wrong.

GPU The underlying chip name. For example an RTX 4070 uses the AD104 chip. This is more specific than the card name and matters for comparing performance between different card models that share the same chip.

Revision The chip revision. This rarely matters for gaming but can be useful for troubleshooting specific driver compatibility issues.

Technology The manufacturing process in nanometres. Lower numbers mean a more modern, more efficient chip. RTX 5000 series uses TSMC 4N. Older cards use larger nodes.

Die Size and Transistors Technical details about the physical chip. Larger die sizes generally mean more powerful GPUs but also more heat generation.

BIOS Version The version of your GPU’s firmware. If you are troubleshooting performance issues or considering a BIOS update, this is where you check the current version.

Memory Size How much VRAM your GPU has. In 2026, 8GB is the minimum for most games at 1080p, 12GB is comfortable for 1440p, and 16GB or more is ideal for 4K and future-proofing.

Memory Type What type of VRAM the card uses. GDDR6, GDDR6X, or GDDR7 on the newest RTX 5000 and RX 9000 series cards. GDDR7 offers significantly higher memory bandwidth which helps at 4K and in memory-intensive workloads.

Bus Width The memory bus width in bits. 128-bit, 192-bit, 256-bit, 384-bit. Wider bus means more data can move between the GPU and its VRAM per clock cycle. A 128-bit bus limits memory bandwidth even with fast GDDR6X memory, which is why some mid-range cards feel bandwidth-constrained at high resolutions.

Bandwidth The theoretical maximum memory bandwidth in GB per second. Higher is better for high-resolution gaming and compute workloads. The RTX 5090 hits 1792 GB/s with GDDR7. The RTX 4060 has 272 GB/s with a 128-bit bus.

Driver Version and Driver Date What GPU driver you currently have installed. Compare this against the latest driver on nvidia.com/drivers or amd.com/support to see if you are behind. Running old drivers can cause performance issues, crashes, and exactly the kind of mysterious GPU usage problems we covered in our guide on why GPU usage runs low.

PCIe Bus Interface This shows what PCIe slot your GPU is running in and at what speed. It should show PCIe x16 4.0 or PCIe x16 5.0 on modern systems. If it shows x8 instead of x16, your GPU may be running in a limited bandwidth slot which can cause performance loss in bandwidth-sensitive games and workloads. This is one of the most overlooked causes of unexpected GPU performance drops.

This is the part of GPU-Z that actually matters for gaming performance. The Sensors tab shows live readings from your GPU updated in real time. Everything here changes while your GPU is working.

Here is every important reading and exactly what it tells you:

GPU Core Clock (MHz) How fast your GPU’s processor is running right now. Compare this to your GPU’s rated boost clock (found on the Graphics Card tab). If your GPU is running significantly below its rated boost clock during gaming, something is limiting it. Usually heat, power limits, or driver issues.

Memory Clock (MHz) How fast your GPU’s VRAM is running. This should match your GPU’s rated memory speed during gaming. Significant drops indicate memory throttling.

GPU Temperature (°C) How hot your GPU chip is right now. This is one of the two most important numbers on this tab. For safe gaming temperatures in 2026, read our complete GPU Temperature Range guide.

Quick reference:

• Below 75°C: Excellent
• 75 to 85°C: Normal for gaming
• 85 to 90°C: Warm, monitor it
• Above 90°C on NVIDIA: Throttling likely starting
• Above 95°C on AMD RX 7000/9000: Approaching Tjmax

Hot Spot Temperature (°C) The highest temperature reading on the GPU die, not the average. Hot spot is always higher than GPU Temperature. On AMD cards hot spot can run 20 to 30°C above the core temperature and that is normal. On NVIDIA cards the hot spot reading represents the hottest point on the chip and should ideally stay below 100°C during gaming.

GPU Load (%) This is the single most important number in GPU-Z. It shows what percentage of your GPU’s processing power is being used right now. During gaming this should be 95 to 100% for maximum performance. Anything significantly lower while you are unhappy with your FPS means something is holding your GPU back.

If your GPU Load is low while gaming, you likely have a CPU bottleneck. We explain exactly what causes this and how to fix every scenario in our complete guide on why GPU usage is low.

Memory Used (MB) How much of your GPU’s VRAM is being used right now. When this approaches or exceeds your GPU’s total VRAM, the game has to swap data to system RAM which is much slower. This causes stuttering and FPS drops even when GPU load looks fine. If you are constantly maxing out VRAM, lower texture quality settings or consider a GPU with more memory.

Memory Controller Load (%) How busy the memory controller is, which shows how actively data is moving between the GPU chip and its VRAM. High memory controller load with low GPU load can indicate a memory bandwidth bottleneck, where the GPU is waiting for data from VRAM rather than being limited by the CPU.

Board Power Draw (Watts) Total power your GPU is consuming right now. This is actually a more reliable indicator of how hard your GPU is working than GPU Load percentage alone. A user on the Chaos Forums explained this well: for an RTX 4080, you want power draw around 250 Watts or higher during gaming to confirm the card is fully utilized. Low power draw combined with low GPU Load almost always means a CPU bottleneck.

Fan Speed (% or RPM) How fast your GPU’s cooling fans are spinning. Higher percentage means more cooling but more noise. If fan speed is at 100% and temperatures are still climbing, your cooler cannot keep up and you need to clean the GPU or improve case airflow.

GPU Voltage (V) The voltage being supplied to the GPU chip. Relevant for overclocking and troubleshooting power delivery issues. Voltage that drops significantly under load can indicate a power supply struggling to deliver stable power.

PCIe Lane Width This sensor shows whether your GPU is running at full x16 lanes or reduced x8 lanes in real time. A drop from x16 to x8 during gaming indicates a potential PCIe issue with your motherboard or BIOS settings.

This is where GPU-Z becomes truly valuable for gaming diagnosis. Here is the exact process to find out whether your GPU is being bottlenecked, throttled, or simply not being pushed hard enough.

Step 1: Open GPU-Z and click the Sensors tab

Make sure GPU-Z is open and showing live sensor readings before you launch your game.

Step 2: Set up your second monitor or use windowed mode

You need to see GPU-Z while your game is running. Options:

• Put GPU-Z on a second monitor while gaming on your main screen
• Run the game in borderless windowed mode and alt-tab to GPU-Z
• Enable Log to file (covered in the next section) and review data afterward

Step 3: Launch your game and play a demanding scene

Play for at least 10 to 15 minutes in the most demanding area of your game. An open world area with lots of NPCs, a multiplayer lobby, a firefight. You need the GPU under real gaming load to get meaningful readings.

Step 4: Watch these three numbers simultaneously

The three numbers that tell the whole story:

GPU Load % and GPU Temperature and GPU Core Clock

Now use this diagnosis guide:

Sometimes you cannot watch GPU-Z while playing. Maybe you only have one monitor. Maybe the issue happens randomly and you miss it. GPU-Z’s Log to File feature solves this completely.

How to set up logging:

Step 1: Open GPU-Z and go to the Sensors tab.

Step 2: At the bottom left of the Sensors tab, tick the Log to file checkbox. GPU-Z will ask you where to save the log file. Choose a location you will remember, like your Desktop.

Step 3: Launch your game and play normally for 10 to 15 minutes, focusing on the areas where you notice performance problems.

Step 4: Close the game and come back to GPU-Z. Untick the Log to file checkbox to stop logging.

Step 5: Open the log file. It is a .txt file that can be opened in Notepad, Excel, or any spreadsheet application. In Excel you can create graphs of temperature, GPU load, and clock speed over time, which makes it very easy to see exactly when and how often throttling occurred during your gaming session.

What to look for in the log:

Look for moments where GPU Temperature spikes above 83°C on NVIDIA or 90°C on AMD at the same time GPU Core Clock drops. That is thermal throttling captured in data. Look for GPU Load dropping to 50 to 60% while Board Power Draw is also low. That is a CPU bottleneck captured in data. Look for Memory Used hitting your VRAM limit. That is a VRAM bottleneck.

The log turns a vague feeling that something is wrong into specific evidence with timestamps.

Most users only ever need the Graphics Card and Sensors tabs. But here is what the others do in case you need them.

Validator Tab

This tab generates a unique hash of your GPU’s specifications and submits it to TechPowerUp’s online database. This has two practical uses.

The first is fraud detection. If you bought a GPU second-hand or from an unfamiliar seller and want to confirm it is genuine, the validator compares your card’s actual hardware readings against TechPowerUp’s database of legitimate cards. Fake GPUs cannot pass this verification because their underlying hardware does not match what they claim to be.

The second is community overclock sharing. If you have found stable overclock settings for your specific GPU model, you can share your validator result on forums so other people with the same card can see your settings as a safe starting point.

Advanced Tab

This tab shows deep technical information about your GPU including BIOS backup options, PCIe configuration testing, and ASIC quality readings. Most users will never need this tab.

The one exception is the Save BIOS button. If you plan to overclock your GPU or flash a modified BIOS, save your stock BIOS first using this button. Name it something like “RTX4070_Stock_BIOS.rom” so you know it is the original. If anything goes wrong with a BIOS modification, you have a backup to restore from.

About Tab

Shows the GPU-Z version number and build date. Useful for confirming you have the latest official version from TechPowerUp.

These are the three tools that come up in every PC gaming performance discussion. Here is exactly what each one does, what it does not do, and when to use which one.

Feature	GPU-Z	MSI Afterburner	HWiNFO64
In-game overlay	No	Yes, via RivaTuner	No
GPU specs display	Very detailed	Basic	Moderate
Fan curve control	No	Yes	No
GPU overclocking	No	Yes	No
FPS limiting	No	Yes	No
Per-core CPU temps	No	Yes	Yes
Throttling detection	Partial	No	Yes, dedicated
Log to file	Yes	Yes	Yes
BIOS backup	Yes	No	No
GPU validation	Yes	No	No
Ease of use	Easy	Medium	Complex
Installation required	No	Yes	Yes
System resource use	Very low	Low	Medium

When to use GPU-Z:

Use GPU-Z when you want to quickly check your GPU’s specifications, verify your driver version, check what PCIe slot speed you are running at, save a BIOS backup before overclocking, or run a quick sensor check before and after making hardware changes. It is the fastest tool to open and the least intrusive on system resources. It is also the right choice when you want to log sensor data to a file for post-session analysis on a single monitor setup.

When to use MSI Afterburner:

Use MSI Afterburner when you want an in-game overlay showing FPS, temperatures, and usage without leaving the game. It is also the correct tool for fan curve control, FPS limiting, and GPU overclocking. We wrote a complete guide covering every feature and every common problem in our MSI Afterburner guide. If you are setting up performance monitoring for the first time, MSI Afterburner with RivaTuner is the most practical starting point for most gamers.

When to use HWiNFO64:

Use HWiNFO64 when you want the deepest possible system data. It shows more sensors than either GPU-Z or Afterburner, including dedicated throttling reason indicators that tell you specifically whether your CPU is throttling due to heat, power limits, or current limits. It shows per-core CPU temperatures and detailed power delivery readings. The interface is complex and overwhelming at first but for serious diagnosis it is unmatched.

The practical recommendation for most gamers:

Install MSI Afterburner and use the in-game overlay daily. Keep GPU-Z as a portable .exe on your desktop for quick spec checks and pre-overclock BIOS backups. Download HWiNFO64 only when you have a specific problem that Afterburner’s overlay is not giving you enough data to diagnose.

If you are trying to diagnose whether your CPU is bottlenecking your GPU, the fastest path is: open GPU-Z Sensors tab, check GPU Load and Board Power Draw during gaming, then use our PC Bottleneck Calculator to confirm the exact percentage mismatch and find the best upgrade path.

GPU-Z is showing the wrong GPU

This happens most often on laptops or systems with integrated graphics. Click the dropdown arrow at the top right of the GPU-Z window and select your dedicated gaming GPU from the list.

Sensor values showing as zero or N/A

Try running GPU-Z as administrator. Right-click the GPU-Z .exe and select Run as administrator. Some sensor readings require elevated permissions to access hardware registers directly.

GPU-Z not detecting my GPU at all

Make sure your GPU drivers are fully installed and up to date. Restart your PC after installing new drivers before opening GPU-Z. On rare occasions a fresh driver install using DDU (Display Driver Uninstaller) followed by a clean driver install resolves detection issues.

GPU temperature showing as zero

This is a known issue with certain AMD cards and specific driver versions. Update to the latest AMD driver from amd.com/support. If the problem persists, run GPU-Z as administrator.

Hot spot temperature seems extremely high

On AMD RDNA 2, RDNA 3, and RDNA 4 cards (RX 6000, 7000, 9000 series), hot spot temperatures running 20 to 30°C above the core temperature are completely normal. AMD designed these chips to run with a significant hot spot to core temperature delta. As long as the hot spot stays below 110°C you are within safe operating range.

GPU-Z shows PCIe x8 but my slot should be x16

Check your motherboard manual to confirm you are using the primary GPU slot. Some motherboards reduce the primary slot to x8 when a second card or device is installed in another slot. Also check your BIOS for PCIe configuration settings. On some ASUS ROG motherboards, disabling Above 4G Decoding has resolved this issue for users.

GPU-Z is a powerful tool that becomes genuinely useful the moment you understand what each number means. Here is the essential knowledge in one place:

Graphics Card tab: Your GPU’s identity. Check this for driver version, VRAM amount, memory type, and PCIe lane configuration.

Sensors tab: Your GPU’s live performance. The four numbers that matter most are GPU Load, GPU Temperature, GPU Core Clock, and Board Power Draw.

Healthy gaming readings: GPU Load 95 to 100%, Temperature below 85°C on NVIDIA or below 95°C on AMD, Core Clock at or near rated boost, Power Draw at rated TDP.

CPU bottleneck signature: GPU Load 50 to 75%, Power Draw low, Temperature normal. CPU is the problem not the GPU.

Thermal throttling signature: GPU Load and Core Clock both drop suddenly at the same moment temperatures spike. Heat is the problem.

Log to file: Use this on a single monitor setup to capture a full gaming session and analyze it afterward in Excel.

Tool to pair with GPU-Z: Our PC Bottleneck Calculator takes what GPU-Z tells you about GPU Load and gives you the specific answer: is your CPU the problem, by how much, and what upgrade fixes it.

GPU-Z takes five minutes to learn and then becomes something you keep on your desktop permanently. The Sensors tab alone has told thousands of people exactly why their PC was not performing as expected, things they would never have figured out without it.

The pattern is almost always one of three things. The GPU is not being fully utilized because the CPU cannot keep up. The GPU is being fully utilized but throttling itself because of heat. Or the GPU is doing everything right and the limit is simply the hardware itself.

GPU-Z tells you which one it is. Our PC Bottleneck Calculator tells you what to do about it.

Open GPU-Z. Check your GPU Load during gaming. If it is not sitting near 100%, your next step is the calculator.

Now go check those numbers.

What did GPU-Z reveal about your system? Drop a comment below. Your finding might help the next person with the same setup.