Nukemark GPU Stress Test Reduces My Gaming Rig to Rubble

A recently released stress-testing tool called Nukemark has emerged as perhaps the most demanding software benchmark yet created, capable of pushing even state-of-the-art graphics cards to single-digit frame rates. Constructed using Unreal Engine 5.7 and leveraging advanced features including Nanite, MegaLights, and hardware ray tracing at up to 8K virtual texture resolution, Nukemark represents a stark wake-up call for PC gamers and computing enthusiasts alike. Even Nvidia’s top-tier RTX 5090 graphics card manages only 15–20 average frames per second at standard resolution, prompting developer Ezbench to proudly market it as “the stress test your GPU hopes you never run”. The application, presently available in beta on Steam, is expected to reach full launch within 12–18 months, making it a bellwether for future gaming performance demands.

The Leading Graphics Card Test

To truly grasp Nukemark’s demanding requirements, the Ezbench development team have crafted two distinct test scenarios that test graphics cards to their ultimate performance threshold. The Pandora test functions as the opening test, whilst Emberhold delivers an substantially more intensive challenge to GPU performance. Both test scenarios are intentionally designed to demonstrate the ultimate capabilities of real-time ray-traced rendering and cutting-edge rendering approaches, presenting complex geometric structures, intricate light interactions, and mirror-like surfaces that necessitate continuous processing power from even the most powerful hardware on the market.

Testing Nukemark on a competent RTX 4070 Super paired with a Ryzen 7 7800X3D processor and 32GB of DDR5 memory—a setup that ordinarily runs modern AAA titles without breaking a sweat—revealed just how punishing this benchmark truly is. At 1440p resolution, both tests generated frame rates that would be completely unplayable in any genuine gameplay context, sitting at 12 and 13 frames per second. Even at the reduced 1080p resolution, performance stayed regrettably sluggish, with the Pandora test managing just 23 frames per second. Curiously, enabling DLSS upscaling made performance deteriorate rather than improve, suggesting likely software optimisation concerns in this early access version.

• Pandora test achieves 23 fps at 1080p native resolution
• Emberhold test includes elaborate magical lighting and lava effects
• DLSS upscaling unexpectedly worsened performance in both scenarios
• Early access phase indicates further optimizations likely before launch

Assessing My Mid-tier Configuration Versus Nukemark

My testing rig serves as a respectable mid-range gaming setup that typically delivers smooth performance across modern AAA games without requiring aggressive upscaling. The RTX 4070 Super, paired with an AMD Ryzen 7 7800X3D processor and 32GB of DDR5 memory, is fully equipped to handle intensive titles at 1440p with solid frame rates. However, Nukemark turned out to be an wholly separate challenge, converting this capable hardware into something scarcely usable. The results were nothing short of devastating, with performance plummeting to levels that would make gaming impossible and frustrating for even the most patient gamer.

The disparity between typical gaming performance and Nukemark’s demands became immediately apparent upon running the benchmark. At 1440p resolution, both test scenarios—Pandora and Emberhold—produced frame rates hovering between 12 and 13 fps, creating a stuttering, slideshow-like experience. Even stepping down to 1080p native resolution offered only marginal relief, with Pandora averaging a meagre 23 fps. Whilst this constitutes the best-case scenario from my testing, it remains far below the 60 fps threshold generally considered the minimum for acceptable gaming experiences, highlighting just how intensively Nukemark pushes modern graphics architecture.

Why DLSS Underperformed

One of the most enigmatic aspects of my Nukemark testing was the counterintuitive behaviour of DLSS upscaling, which usually provides considerable performance improvements in modern games. Rather than offering the expected frame rate boost, enabling DLSS actually degraded performance across both test scenarios. At 1440p with DLSS enabled, the Pandora test plummeted to just 6 fps—a catastrophic drop from the notably terrible 13 fps achieved with native rendering. This suggests either a fundamental compatibility issue between Nukemark’s early access build and Nvidia’s upscaling technology, or potentially a software bottleneck unique to my particular hardware configuration.

Given that Nukemark remains in early-stage development with an expected launch window of 12 to 18 months away, such anomalies are perhaps unsurprising. The developers at Ezbench may not have fully optimised DLSS integration within the benchmark’s Unreal Engine 5.7 framework, especially given the extreme computational demands placed upon the GPU by features like Nanite geometry processing and Lumen ray tracing. It’s quite possible that upcoming patches will resolve this peculiar performance regression, allowing DLSS to work as designed and deliver the performance uplift users rightfully expect from the technology.

Understanding Nukemark Unconventional Design Philosophy

Nukemark constitutes a deliberate departure from conventional GPU benchmarking software, eschewing the pretence of real-world gaming scenarios in favour of straightforward, unfiltered stress testing. Constructed on Unreal Engine 5.7, the benchmark utilises cutting-edge rendering technologies driven to maximum capability—Nanite geometry processing, MegaLights dynamic lighting, and Lumen hardware-accelerated ray tracing all functioning concurrently at peak performance. The developers at Ezbench have essentially created a software gauntlet intended to reveal the structural constraints of even the most powerful graphics processors in use today, with the RTX 5090 unable to sustain 15-20 fps at native 4K resolution.

This rigorous approach to stress testing fulfils a distinct purpose across the hardware enthusiast community. Rather than simulating typical gaming workloads, Nukemark functions as a testing instrument for establishing maximum GPU capability and heat stability in extreme scenarios. The benchmark’s Steam page prominently promotes itself as “the stress test your GPU hopes you never run,” a playful acknowledgement that the majority of users will discover the results daunting. For overclockers, PC reviewers, and those driving their hardware to the limit, Nukemark offers crucial information about where their hardware truly performs in terms of raw computational power.

• Unreal Engine 5.7 base with cutting-edge rendering features fully enabled
• Nanite and MegaLights technologies executing at full capacity simultaneously
• Lumen ray tracing accelerated processing pushing GPU memory bandwidth to limits
• Up to 8K virtual textures creating extraordinary VRAM demands throughout tests
• Deliberately engineered to make modern gaming GPUs effectively obsolete at playable framerates

Visual Complexity Reaches Its Height

The two test scenarios included within Nukemark—Pandora and Emberhold—are visual showcases specifically engineered to optimise GPU workload. Emberhold particularly exemplifies this philosophy, drowning the scene in multiple layered lights from magical effects, lava flows, and ambient environmental lighting. Every surface bounces and bends light realistically, whilst flame simulations demand significant processing power for particle physics and light rendering. This intentional graphical intensity isn’t designed to replicate any real game; instead, it functions as a performance evaluation that isolates GPU performance bottlenecks by presenting the most computationally demanding rendering scenario possible.

What Nukemark Shows About GPU Performance Constraints

Nukemark’s unflinching results reveal a fundamental truth about modern graphics hardware: even the highest-end consumer GPUs perform poorly when confronted with exceptionally intensive workloads. The RTX 5090, Nvidia’s flagship consumer graphics card, achieves only 15-20 fps at native 4K resolution, whilst the RTX 4070 Super—a solid mid-range card—generates merely 13 fps at 1440p without upscaling support. These figures highlight the vast gulf between standard gameplay requirements and the absolute computational limits of today’s GPU technology. The benchmark acts as a stark warning that graphics card manufacturers persistently advance architectural boundaries, yet consumers rarely experience these theoretical peaks in practical gaming scenarios.

Beyond raw framerate numbers, Nukemark offers important technical information for hardware enthusiasts and professionals wanting to comprehend their systems’ actual performance. The stress test demonstrates thermal stability, energy usage characteristics, and RAM throughput performance under conditions far more extreme than any commercial game demands. For overclockers and system builders, this data proves crucial when identifying optimal operating thresholds and identifying potential bottlenecks. Additionally, the benchmark’s uncompromising approach helps hardware vendors confirm software enhancements and architectural improvements, ensuring that each latest iteration genuinely provides substantial improvements rather than merely incremental improvements.

• Exposes the gap between standard gaming and maximum GPU processing capabilities
• Provides performance metrics on thermal stability and power consumption under extreme load
• Enables overclockers establish safe operating parameters and system bottlenecks

The Future of GPU Performance Testing and Technological Advancement

Nukemark constitutes a significant shift in how the sector handles GPU benchmarking, moving away from synthetic tests that have minimal similarity to actual performance conditions towards truly rigorous scenarios constructed with cutting-edge game engines. By harnessing Unreal Engine 5.7’s premier functionalities—Nanite geometry streaming, MegaLights dynamic lighting, and hardware-accelerated ray tracing—the benchmark establishes a connection between forward-looking visual systems and real-world performance assessment. This strategy compels GPU manufacturers to improve performance in capabilities that shall shape the next generation of interactive entertainment, rather than targeting contrived performance metrics. As games increasingly adopt these graphical approaches, Nukemark’s intensive requirements shift from being speculative concern and increasingly serve as predictive indicator of upcoming performance demands.

The existence of Nukemark also signals that consumer graphics processors has hit a ceiling where incremental improvements no longer satisfy enthusiasts looking for tangible advancement. Hardware manufacturers and software developers must now explore more ambitious architectural innovations—whether through improved memory hierarchies, dedicated ray-tracing units, or new computational approaches—to deliver noticeable performance gains. Next-generation GPUs will likely be evaluated not merely on their capacity to execute current games more quickly, but on their potential to unlock entirely new visual possibilities that existing technology cannot accomplish. In this context, Nukemark serves as both a challenge and a roadmap, driving progress across the sector whilst revealing precisely where existing systems reaches its limits.