Community reverse-engineering has restored access to the GPU hotspot temperature sensor on NVIDIA GeForce RTX 50 “Blackwell” graphics cards, and major hardware monitoring tools like HWiNFO and HWMonitor have already integrated the feature. Owners can now see the hottest point on the GPU die—a metric that was previously hidden—along with individual temperature readings for each memory chip, offering a far clearer picture of cooling performance and potential throttling issues.

What Changed: Hidden Sensors, Now Exposed

When the RTX 50 series launched, monitoring software could show an average GPU temperature but not the hotspot—the single hottest location on the die. The sensor hardware was physically present, but NVIDIA had not exposed it through its public telemetry interface. In recent weeks, Brazilian repair specialist Paulo Gomes discovered that the hotspot could still be read using NVIDIA’s internal MODS diagnostic tool. That finding sparked a rapid chain of community development: within days, modders had created ways to expose the reading, and popular Windows utilities quickly added official support.

  • HWiNFO now lists “GPU Hot Spot Temperature” for Blackwell GPUs in a pre-release build. It also adds per-chip VRAM temperature monitoring for NVIDIA RTX 30-series and later cards, including GDDR6, GDDR6X, and GDDR7 memory.
  • HWMonitor 1.65.1 (released July 16, 2026) corrected its initial RTX 50 hotspot implementation, delivering accurate readings. The update was credited to assistance from Paulo Gomes and his team.

The hotspot isn’t the only new data point. For the first time, enthusiasts can monitor temperatures of individual memory modules rather than relying on a single “VRAM temperature” that only shows the hottest chip. This granularity can reveal uneven cooling caused by poor thermal pad contact or mounting pressure.

A real-world example drives home the importance. A Gigabyte GeForce RTX 5070 Ti sent in for overheating symptoms showed an average GPU temperature of 67–68°C under load—perfectly acceptable. But through the MODS diagnostic path, its hotspot rocketed to 107°C. That extreme local heat forced the card to throttle clocks and chop performance, even though the broader die looked cool. After the repairer repasted and remounted the cooler, the hotspot fell to 100°C and stability returned. Without the hotspot reading, the root cause would have remained hidden.

What It Means for You

If you own an RTX 50 card, these new readings can explain behavior that once mystified users: a card that thermally throttles even though its reported average GPU temperature is well below dangerous levels. The hotspot reading shows the high point that actually triggers protective measures.

For everyday gamers: Update to the latest HWiNFO or HWMonitor. While gaming, check your hotspot delta (the difference between hotspot and average GPU temperature). A delta exceeding 20–25°C under sustained load could indicate a cooler contact issue. Don’t panic if you see a high number once—monitor over time.

For overclockers and enthusiasts: Per-chip VRAM temperatures are a game-changer. Instead of wondering which memory module is overheating, you can pinpoint it. Use this data to fine-tune thermal pads, adjust water block mounts, or validate aftermarket cooler installations.

For system builders and repair techs: Before and after repasting or remounting a cooler, log hotspot and per-chip memory temperatures during a consistent stress test. A reduction in maximum hotspot and a narrowing of memory temperature variance can objectively confirm an improvement.

For IT administrators managing workstation fleets: Incorporate these readings into hardware acceptance testing. A card with an abnormally high hotspot or uneven memory temps out of the box might be flagged for replacement before deployment.

How We Got Here: A Timeline of Discovery

NVIDIA’s decision to omit hotspot telemetry from consumer tools wasn’t a hardware limitation—the sensor had been present in previous generations and was widely used by reviewers and power users. On RTX 50 cards, the data simply wasn’t exposed to software like MSI Afterburner, GPU-Z, or HWiNFO.

  • Late June 2026: Paulo Gomes demonstrated that the MODS diagnostic suite could read the hotspot on an RTX 5070 Ti. The discovery spread through hardware communities, with Tom’s Hardware reporting the specifics: a card showing 67°C average and 107°C hotspot, throttling as a result.
  • Early July 2026: Enthusiasts on Overclock.net and other forums began developing plugins and methods to expose hotspot and per-chip memory temperatures on everything from RTX 30 series up to the new Blackwell cards. A “Hotspot.dll” plugin emerged, capable of reading hotspot, die thermal channels, and per-DRAM temps across GDDR6, GDDR6X, and GDDR7 modules.
  • Mid-July 2026: Hardware monitoring developers moved fast. HWiNFO incorporated the readings into its pre-release builds. HWMonitor 1.65 added hotspot support, though initial inaccuracies prompted a swift 1.65.1 fix released on July 16. CPUID publicly credited the PauloGomesTeam for help with decoding the sensors.
  • Late July 2026: The Wccftech roundup consolidated the news, and per-chip VRAM monitoring became widely accessible through updated utilities. As of this writing, HWiNFO’s changelog explicitly confirms per-chip VRAM temperatures for NVIDIA 30-series and newer, and HWMonitor’s release notes document the accurate RTX 50 hotspot implementation.

Throughout this process, the community emphasized that the sensors were never “broken”—they just needed to be unlocked. The speed at which legitimate developers adopted the findings shows how much demand there was.

What to Do Now: A Practical Checklist

Before you start worrying, gather data. Here’s how to use these new diagnostics responsibly.

  1. Update your monitoring software. Download the latest HWiNFO (pre-release if necessary) or HWMonitor 1.65.1 or newer. Do not rely on older versions that may show incorrect hotspot readings.
  2. Run a repeatable stress test. Use a tool like FurMark, 3DMark Time Spy Extreme, or a demanding game loop. Let it run for at least 15–20 minutes until temperatures stabilize.
  3. Log the following sensors:
    - GPU Core Temperature
    - GPU Hot Spot Temperature (new)
    - GPU Clock / Effective Clock
    - GPU Power Draw
    - Fan Speed
    - Memory Junction Temperature
    - Individual VRAM temperatures (if available)
    - Frame rate consistency (if using an overlay)
  4. Calculate the delta. Subtract the GPU temperature from the hotspot. A delta under 15°C is typical for a well-mounted cooler. Deltas above 25°C under load deserve investigation.
  5. Check VRAM uniformity. Look at the spread between memory module temperatures. If one chip is 10–15°C hotter than the rest, it may have a poor thermal pad contact. If all are high but even, your cooling solution may be undersized overall, but it’s not a defect.
  6. Compare with performance. Is your card clocking down? Are you seeing stutters or crashes that align with high hotspot readings? Correlate the thermal data with actual performance loss.
  7. Document before contacting support. If you suspect a hardware issue, take screenshots or save a CSV log from HWiNFO. Share the exact model, driver version, and the log with the manufacturer’s support team. This evidence is far more compelling than “my card runs hot.”
  8. Avoid unnecessary disassembly. Removing the cooler can void your warranty. Unless you’re experienced and willing to accept that risk, let the manufacturer handle it if your logs show a clear problem.

Outlook

The community’s success puts pressure on NVIDIA to officially support these sensors in future drivers. While no statement has been made, having widely used tools already accessing the data makes it harder to justify keeping them hidden. Board partners may also benefit—better customer diagnostics can mean fewer ambiguous RMAs. In the meantime, RTX 50 owners finally have the thermal clarity that reviewers and enthusiasts demanded. Keep your monitoring tools updated; the story may evolve quickly.