Downfall

# Downfall with Intel Core Ultra 5 135H + NVIDIA GeForce RTX 5080

The combination of Intel's Core Ultra 5 135H mobile processor and NVIDIA's GeForce RTX 5080 desktop GPU produces a curious pairing in Downfall, a 2016 horror title that scales well across resolutions but reveals clear bottlenecks depending on the settings tier. Measured data across 1920x1080, 2560x1440, and 3840x2160 shows this combo ranking 1016th out of 3716 tested combinations — a solidly above-average result that places it in the 73rd percentile of all combos. The RTX 5080, with its 16 GB of GDDR7 memory and 960.0 GB/s bandwidth, clearly drives the high-resolution results, while the Core Ultra 5 135H's 14 cores and 18 threads handle the lower-resolution overhead without becoming a severe limiting factor — though the data indicates the CPU does cap performance at 1080p in the lighter settings.

Resolution Scaling

The measured FPS data reveals how this combo scales from 1080p to 4K across four preset tiers. At High settings, the average frame rate drops from 206 FPS at 1920x1080 to 147 FPS at 2560x1440 — a 28.6% reduction — then falls further to 92 FPS at 3840x2160, representing a 55.3% decline from the 1080p baseline. This scaling pattern shows a GPU that remains the dominant factor at High settings even at 4K, where the 92 FPS average remains comfortably playable.

Low settings tell a different story. The 1080p Low result of 308 FPS is the highest measured value in the entire dataset, but the drop to 220 FPS at 1440p (28.6% reduction) and 137 FPS at 4K (55.5% reduction) follows nearly the same proportional pattern as High. The interesting divergence appears when comparing Low to Medium: at 1080p, Low hits 308 FPS while Medium reaches 252 FPS — an 18.2% gap — but at 4K the gap narrows to 137 FPS versus 112 FPS, just 18.2% again. This consistency suggests the game's render pipeline scales predictably with pixel count regardless of preset, and the RTX 5080's 56.28 TFLOPS FP32 throughput is the primary driver of these numbers.

Ultra settings expose the steepest scaling curve. At 1080p Ultra, the combo manages 129 FPS; at 1440p that drops to 92 FPS (28.7% reduction); and at 4K Ultra the average falls to 57 FPS — a 55.8% decline from 1080p. The 4K Ultra result is the only measured configuration below 60 FPS, indicating that this preset pushes the GPU to its limits in this horror title. The min FPS data available for Medium settings shows 95 FPS at 4K, 153 FPS at 1440p, and 214 FPS at 1080p, with max FPS of 129, 207, and 289 respectively — these ranges suggest frame pacing remains stable even when the GPU is under heavy load.

The scaling pattern across all resolutions indicates a system where the RTX 5080 is the clear limiting component at 4K, particularly on Ultra where the 57 FPS average represents a 55.8% drop from the 1080p Ultra figure. At 1080p, however, the 308 FPS Low result suggests the CPU begins to impose a ceiling — the Core Ultra 5 135H's PassMark single-thread score of 3521 and multithread score of 22422 are respectable for a mobile chip, but they cannot sustain frame rates beyond roughly 300 FPS in this title. The data shows diminishing returns as resolution drops, with the 1080p-to-1440p gap (28.6% average reduction) being nearly identical to the 1440p-to-4K gap (37.4% average reduction), which is typical for a GPU-bound scenario.

GPU Role

The RTX 5080 is the undisputed performance driver in this pairing. With 10752 shading units, 336 TMUs, and 112 ROPs, the Blackwell 2.0 architecture delivers a pixel rate of 293.1 GPixel/s and a texture rate of 879.3 GTexel/s. The 16 GB GDDR7 memory on a 256-bit bus provides 960.0 GB/s of bandwidth — a figure that proves ample for Downfall's 2016-era assets, even at 4K Ultra where the 57 FPS average indicates the GPU's compute capacity, rather than memory bandwidth, is the binding constraint.

Clock behavior matters here. The base clock of 2295 MHz and boost clock of 2617 MHz give the card headroom to ramp up under load, and the measured FPS data suggests the boost clock is sustained during gameplay. The GPU's PassMark G3D score of 36565 and 3DMark Steel Nomad DX12 score of 8637 place it in the 87th percentile of all GPUs, with an average benchmark score of 56083. Its nearest rivals in synthetic benchmarks — the AMD Radeon 8060S at 55757 (0.6% behind), the AMD Radeon RX 6750 GRE 12 GB at 55698 (0.7% behind), and the AMD Radeon Pro W5700X at 54828 (2.3% behind) — all trail the RTX 5080, while the AMD Radeon RX 9070 GRE leads it by 2.2% with a score of 57367.

In Downfall specifically, the GPU's role shifts with resolution. At 1080p Low, the 308 FPS average is likely CPU-limited, as the RTX 5080's compute resources are underutilized at such high frame rates. At 4K Ultra, however, the 57 FPS average reflects the GPU working near its full capacity — the 4K pixel count requires 4 times the shading work of 1080p, and the measured 55.8% FPS drop aligns with the GPU's rendering capabilities. The 16 GB VRAM is never a limiting factor in this title; even at 4K Ultra, the memory footprint of a 2016 horror game falls well within the available capacity, and the 960.0 GB/s bandwidth ensures texture streaming never stalls frame delivery.

The GPU's DirectX 12 Ultimate support and Vulkan 1.4 API compatibility mean Downfall, which launched before these APIs matured, runs through compatibility layers that may not fully exploit the Blackwell architecture. Still, the data shows strong performance across all presets, with the 4K High result of 92 FPS being particularly notable for a horror title where smooth frame pacing enhances the atmospheric experience.

How This Combo Ranks

The combo rank of 1016 out of 3716 tested combinations places this pairing in the top 27.3% of all systems tested in Downfall. This is a strong result, though not exceptional — the ranking reflects the mobile CPU's limitations alongside the desktop GPU's strengths. The Core Ultra 5 135H, with its average benchmark score of 29093, sits at the 81st percentile of all CPUs, while the RTX 5080's average score of 56083 places it at the 87th percentile of all GPUs. The gap between these percentiles — 6 percentage points favoring the GPU — explains why the combo rank is slightly lower than either component's individual standing.

In synthetic CPU benchmarks, the Core Ultra 5 135H's nearest rival is the AMD Ryzen 7 5800X, which scores 29123 versus the Intel's 29093 — a negligible 0.1% difference. The Intel Xeon Phi 7210 leads by 0.5% at 29245, while the AMD Ryzen 5 5600XT trails by 0.5% at 28940. The Intel Core i5-13500HX outperforms the Ultra 5 135H by 0.6% with a score of 29270. These tight margins — all within 0.6% — indicate that the Ultra 5 135H is competitively positioned among mid-range processors, though none of these rivals are particularly close to the RTX 5080's tier of GPU performance.

The GPU-side rivals show a similar picture. The AMD Radeon RX 9070 GRE leads the RTX 5080 by 2.2% in average benchmark score, while the Radeon 8060S trails by 0.6%, the RX 6750 GRE by 0.7%, and the Radeon Pro W5700X by 2.3%. These small deltas suggest that in synthetic workloads, the RTX 5080 is closely matched with several AMD offerings, but in Downfall specifically, the measured FPS data shows strong real-world performance that aligns with its top-tier ranking among GPUs.

The 1016th rank out of 3716 combos means this system outperforms 2700 other tested combinations. The data indicates the CPU is the weaker link in this pairing — at 1080p Low, the 308 FPS result likely approaches the CPU's maximum frame delivery capability, while the GPU could theoretically push higher. This imbalance is reflected in the combo rank being lower than the GPU's individual percentile, as the CPU's 14 cores and 18 threads, with a boost clock of 4.60 GHz, cannot fully feed the RTX 5080 at lower resolutions.

FAQ

Q: What is the best resolution to play Downfall with this combo for a balance of visuals and performance?

A: The measured data shows 2560x1440 High delivering 147 FPS average, which is a 28.6% drop from the 1080p High result of 206 FPS but still well above the 4K High figure of 92 FPS. The 1440p High setting provides a substantial visual upgrade over 1080p while maintaining frame rates far above the 60 FPS threshold.

Q: Can this system handle 4K Ultra in Downfall?

A: The 4K Ultra result averages 57 FPS, which is the only measured configuration below 60 FPS. This is playable but not ideal for a horror title where smooth motion matters. The 4K High preset at 92 FPS is a better choice for 4K gameplay, offering a 61.4% FPS improvement over Ultra.

Q: How does the Core Ultra 5 135H compare to its closest CPU rivals?

A: The Intel chip scores 29093 in average benchmark, sitting within 0.6% of its four nearest rivals. The AMD Ryzen 7 5800X scores 29123 (0.1% higher), the Intel Xeon Phi 7210 scores 29245 (0.5% higher), the AMD Ryzen 5 5600XT scores 28940 (0.5% lower), and the Intel Core i5-13500HX scores 29270 (0.6% higher).

Q: Is the RTX 5080 the bottleneck at 1080p?

A: No. The 1080p Low result of 308 FPS suggests the CPU is the limiting factor at this resolution. The RTX 5080's PassMark G3D score of 36565 indicates it could push higher frame rates, but the Core Ultra 5 135H's single-thread performance of 3521 in PassMark caps the system below the GPU's potential.

Q: What is the frame time consistency at Medium settings?

A: The Medium preset provides the only min/max FPS data in the dataset. At 4K, the range spans 95 to 129 FPS around a 112 FPS average; at 1440p, it spans 153 to 207 FPS around a 180 FPS average; and at 1080p, it spans 214 to 289 FPS around a 252 FPS average. These ranges indicate stable frame pacing with no severe stuttering.

Q: How does this combo rank among all tested systems in Downfall?

A: It ranks 1016th out of 3716 combinations, placing it in the top 27.3% of all tested systems. The GPU's 87th percentile standing is higher than the CPU's 81st percentile, reflecting the slight CPU bottleneck at lower resolutions.

Settings Recommendations

The measured data provides clear guidance for optimizing Downfall with this hardware. The Ultra preset is the least efficient choice: at 1080p it delivers 129 FPS (a 37.4% drop from High's 206 FPS), at 1440p it delivers 92 FPS (a 37.4% drop from High's 147 FPS), and at 4K it delivers 57 FPS (a 38.0% drop from High's 92 FPS). The consistent ~37% penalty across all resolutions indicates Ultra's additional effects cost a fixed proportion of GPU resources without proportional visual benefit in this horror title.

Medium settings offer the best balance of performance and visual quality. At 1080p, Medium achieves 252 FPS — 18.2% below Low's 308 FPS but 95.3% above Ultra's 129 FPS. The 1440p Medium result of 180 FPS is 18.2% below Low's 220 FPS and 95.7% above Ultra's 92 FPS. At 4K, Medium delivers 112 FPS, which is 18.2% below Low's 137 FPS and 96.5% above Ultra's 57 FPS. The consistent 18.2% gap between Low and Medium across resolutions suggests Medium adds meaningful visual quality for a modest performance cost.

For 4K gameplay, the High preset at 92 FPS is the recommended choice. It delivers 61.4% higher frame rates than Ultra's 57 FPS while maintaining a significant visual upgrade over Medium's 112 FPS — though the 17.9% gap between High and Medium at 4K is smaller than at lower resolutions. The 1440p High result of 147 FPS is also strong, making this preset the best all-around choice for users who prioritize both image quality and frame rate. For competitive play or maximum frame rates, the 1080p Low setting at 308 FPS is the clear winner, though the 220 FPS 1440p Low result offers a better resolution-to-performance trade-off.

The data suggests avoiding Ultra entirely unless visual fidelity is the sole priority. The consistent ~37% performance penalty across all resolutions, combined with the 4K Ultra result falling below 60 FPS, makes this preset impractical for smooth horror gameplay. Medium at 4K (112 FPS) or High at 1440p (147 FPS) provides the best measured experiences, with the former offering higher resolution and the latter offering higher frame rates.

CPU Role

The Intel Core Ultra 5 135H plays a supporting role in this pairing, and the data shows its influence most clearly at 1080p. With 14 cores and 18 threads, a base clock of 3.60 GHz, and a boost clock of 4.60 GHz, this Meteor Lake mobile processor delivers a Cinebench R23 multi-core score of 11875.5 and a single-core score of 1700. Its PassMark results include a multithread score of 22422 and a single-thread score of 3521, with the data compression score of 251651 and floating-point math score of 54867 indicating strong computational throughput for a 28 W TDP part.

The 1080p Low result of 308 FPS is the clearest indicator of CPU limitation. The RTX 5080's compute capabilities — 56.28 TFLOPS FP32 and a PassMark G3D score of 36565 — are more than sufficient to exceed 300 FPS in a 2016 title at 1080p, yet the system cannot break past approximately 308 FPS. This ceiling aligns with the CPU's single-thread performance: Downfall's game logic likely runs on a primary thread, and the Core Ultra 5 135H's single-core score of 1700 in Cinebench R23 and 3521 in PassMark represents the limiting factor.

At higher resolutions, the CPU's role diminishes. The 4K results across all presets show GPU-bound behavior, with the scaling pattern from 1440p to 4K (approximately 37% average FPS reduction) matching the pixel count increase. The 18 MB of shared L3 cache and 2 MB per-core L2 cache provide adequate memory hierarchy for game data, and the dual-channel DDR5 memory support with 89.6 GB/s bandwidth ensures the CPU can feed the GPU without starvation.

The CPU's 81st percentile ranking and average benchmark score of 29093 place it in the upper tier of mobile processors, but its nearest rivals are desktop and high-end mobile chips like the AMD Ryzen 7 5800X (29123, 0.1% higher) and Intel Core i5-13500HX (29270, 0.6% higher). The 28 W TDP and Intel BGA 2049 socket confirm this is a mobile part, and its performance in Downfall reflects that — strong enough to avoid being a significant bottleneck at 1440p and 4K, but noticeably limiting at 1080p where the RTX 5080's potential exceeds the CPU's frame delivery capacity. For users primarily gaming at 1440p or 4K, the CPU is adequate; for 1080p high-refresh displays, the CPU will cap performance below what the GPU can deliver.