# GPU-Z GPU-Z is a small free Windows utility from TechPowerUp that tells you everything about your graphics card. It is a single lightweight executable, it needs no installation, and it answers the question "what exactly is in this machine, and is it behaving normally?" faster than anything else. It sits in the same family as CPU-Z, and it has become the default way people share GPU details online. When someone on a forum asks for a GPU-Z screenshot, that is why. ## What it shows **The Graphics Card tab**: GPU name and codename, die revision, process node, transistor count, memory type, size and bus width, bandwidth, ROPs and shader counts, bus interface with the actually negotiated link speed, default and current clocks, driver version, and the supported API levels. That "actually negotiated" detail matters more than it sounds. A card sitting at PCIe x8 instead of x16, or at Gen3 instead of Gen5, is a common and easily missed cause of unexplained performance loss. GPU-Z shows it plainly, and its render test forces the link to full speed so you can confirm the reading under load rather than at idle. **The Sensors tab**: core and memory clocks, GPU and hotspot and memory temperatures, fan speed in RPM and percent, board power draw, voltage, GPU and memory controller load, and the performance limit indicators telling you whether the card is being held back by power, temperature, voltage, or its own reliability voltage cap. That last row is the one that turns "why is it slower today" into a specific answer. **BIOS handling**: one-click backup of the video BIOS, and optional upload to TechPowerUp's public VBIOS collection. If you plan to modify anything on the card, taking that backup first is the difference between an experiment and a paperweight. **Advanced tab and validation**: deeper vendor-specific data, plus a validation feature that produces a shareable, verified record of the card. This is also how relabeled or counterfeit cards get caught, since GPU-Z reports what the silicon actually is rather than what the sticker claims. The tool is updated constantly to support new hardware; recent releases have covered current NVIDIA and AMD generations as they launched. ## Notes from using it Keep a copy in your toolkit folder. It is portable, so it runs from a USB stick on a machine you are diagnosing for someone else, with no install and no traces left behind. Use it as the first step, not the deep one. GPU-Z identifies and reports. When you need sustained monitoring across the whole system, [[HWiNFO]] is the better instrument. When you need to load the card until it complains, that is [[FurMark]]. Buying a used graphics card is where it earns its place outright. Run GPU-Z, check that the reported chip matches the advertised model, check the memory size and bus width, look at the BIOS version, and run the render test while watching the sensors. Five minutes, and most bad purchases become obvious before money changes hands. ## My take GPU-Z is a small tool that does one thing completely, which is rare enough to be worth noting. No account, no installer, no background service, no upsell. Download it, run it, get the answer, close it. It is also a good reminder that the most useful diagnostic tools are usually the ones that only *report*. GPU-Z changes nothing about your system. That is precisely why you can trust what it tells you. ## References - Official page: https://www.techpowerup.com/gpuz/ - Download: https://www.techpowerup.com/download/techpowerup-gpu-z/ - VBIOS collection: https://www.techpowerup.com/vgabios/ - GPU database (useful for checking specs against your card): https://www.techpowerup.com/gpu-specs/ ## Related - [[HWiNFO]]: broader and deeper monitoring across the whole machine - [[FurMark]]: the load to pair with GPU-Z's sensors - [[OCBase (OCCT)]]: whole-system stability testing - [[Winget]]: how I install it