Changing the application dropped the temperature to 100 degrees Celsius.
When the RTX 50 series launched, reviewers quickly discovered that the hotspot temperature was being misreported in standard diagnostics tools such as HWiNFO or MSI Afterburner. Eventually, people realized that Nvidia had outright removed the option to monitor hotspot temps, but it seems like the hardware was never removed from the GPU. New testing by Brazilian repair specialist Paulo Gomes has revealed that the sensor is still present and readable with special tools.
In the video, the host shows a Gigabyte variant of the RTX 5070 Ti that was sent to him due to overheating issues. Within Windows, the monitoring tools showed no abnormal signs, as the "average" temperature was reported at 67 to 68 degrees Celsius. However, when diagnosed with a specialized tool called "MODS," the hotspot temperature reached 107 degrees Celsius almost immediately under load.
MODS stands for Modular Diagnostics Software, and it's an internal Nvidia tool used to test GPUs before they hit the shelves or during the RMA process. It's not available to the public and doesn't work on Windows because the OS keeps intercepting calls from the hardware monitoring APIs. You need a Linux distribution that boots directly into a command line, from where MODS (and MATS, for memory testing) can run as intended.
Some repair shops have been known to get access to MODS, such as in this case, which unlocks the hidden hotspot temperature sensor on Blackwell gaming GPUs. Keep in mind that Nvidia ships much more comprehensive diagnostic utilities for its server-grade and workstation GPUs that can actively monitor all aspects of the card. It's unknown why the company decided to keep some sensors locked out of gamers' reach.
Perhaps we can infer the rationale from last year, when Igor's Lab tested several RTX 50-series GPUs and found a "hotspot issue" affecting all of them. The reason was poor PCB manufacturing — not using heavy-duty materials to build the PCB layers, causing certain parts of the substrate to heat up even when the core was relatively cool. This was exacerbated by Nvidia's own guidelines, which told AIBs to compensate for ideal conditions instead of worst-case scenarios.
Anyhow, as Paulo Gomes and his team discovered, the RTX 5070 Ti's hotspot was hitting 107 degrees Celsius, and the card throttled and dropped its clock speeds right away. Nvidia mandates 107 degrees Celsius as the upper limit for RTX 50-series, so it was clear that the card was slowing down to prevent damage. To inspect what was actually wrong, they opened up the card and found poor thermal contact between the cooler and the componentry.
The TIM (thermal interface material) application was inadequate; the paste had accumulated around the perimeter of the core while the center was mostly dry. The repair personnel removed the old material and replaced it with SnowDog Husky paste, which was enough to drop the hotspot temperatures to 100 degrees Celsius. Now, it was within the safe operating range and no longer thermal throttling under load.
Get Tom's Hardware's best news and in-depth reviews, straight to your inbox.
What would've been a simple fix on the consumer's end was turned into a repair job solely because Nvidia hid the GPU's hotspot temperature, literally misreporting the card's internal condition. Had this RTX 5070 Ti just run at 107 degrees Celsius continuously, the silicon would wear down incredibly fast, and the customer would never even know why. Not to mention some manufacturers' insistence on voiding warranty upon breaking the GPU's "seal," which is an illegal and unenforceable practice in the United States.
Follow Tom's Hardware on Google News, or add us as a preferred source, to get our latest news, analysis, & reviews in your feeds.
Hassam Nasir is a die-hard hardware enthusiast with years of experience as a tech editor and writer, focusing on detailed CPU comparisons and general hardware news. When he’s not working, you’ll find him bending tubes for his ever-evolving custom water-loop gaming rig or benchmarking the latest CPUs and GPUs just for fun.
-
thestryker A textbook case of why hotspot temperatures are such an important thing for users to have access to. That it wasn't necessarily available on all GPUs was something they should have fixed instead they opted to remove it from all.Reply -
watzupken This is probably why Nvidia decided to remove this metric from retail Blackwell GPUs to begin with. I do not recall Ada based GPUs ran with such high hotspot temps. And I feel this is to be expected when Blackwell is on the same node as Ada, and the performance improvement is mostly due to higher power requirement.Reply
Facts Only
* The hotspot temperature sensor on Nvidia Blackwell gaming GPUs is accessible with the internal MODS tool.
* An RTX 5070 Ti reached 107°C hotspot temperature under load when using MODS.
* Standard monitoring tools like HWiNFO or MSI Afterburner reported average temperatures of 67 to 68°C in Windows.
* The RTX 50 series launch led to a discovery that hotspot temperature was misreported in standard diagnostics.
* MODS is an internal Nvidia tool used for testing GPUs before release or during RMA.
* MODS requires a Linux distribution to run correctly as it bypasses Windows monitoring APIs.
* The inspection revealed poor thermal contact between the cooler and componentry.
* Replacement of the TIM with SnowDog Husky paste reduced hotspot temperatures to 100°C.
* Nvidia mandates a maximum hotspot temperature of 107°C for RTX 50-series cards.
Executive Summary
Full Take
The situation illustrates a systemic divergence between the information presented to the consumer and the underlying physical reality of hardware performance, driven by proprietary control over diagnostic data. The initial removal of hotspot monitoring from retail diagnostics suggests an intent to manage consumer perception rather than address a fundamental thermal or manufacturing issue; the subsequent discovery that the sensor remained accessible via internal tools points toward an intentional separation between public reporting and internal quality control requirements. The pattern suggests that when manufacturers perceive potential systemic flaws (like poor PCB material leading to thermal stress, as suggested by prior testing), restricting access to objective metrics acts as a barrier to independent verification of those flaws. This dynamic creates a dependency where repair or validation relies on privileged access, effectively outsourcing critical performance oversight from the end-user to specialized third parties. The final resolution—fixing poor physical contact rather than addressing the reporting discrepancy—highlights that while the sensor's presence was hidden, the tangible consequences of thermal stress remained physical, demonstrating that operational reality often supersedes informational constraints imposed by corporate policy.
Bridge Questions: If all manufacturers were legally mandated to expose internal hotspot telemetry via standardized interfaces, how would the economic incentives for proprietary hardware design change? What is the long-term risk when diagnostic access remains siloed between manufacturer testing and end-user experience? How can consumers establish a framework for demanding transparency in performance metrics independent of vendor-controlled diagnostics?
Sentinel — Human
The article functions effectively as investigative journalism, blending technical specifics with narrative context, exhibiting characteristics of a human-authored report incorporating expert commentary.