NVIDIA GeForce PCX 5950

The NVIDIA GeForce PCX 5950 occupies a distinct and narrow position in the benchmark database, with an average benchmark score of zero and a percentile ranking of 50 among all GPUs. This metric places it precisely at the median of the performance distribution, though the absence of any rival entries in its nearestRivals array means its relative standing is defined more by its architectural limits than by direct competitive deltas. The data shows a GPU that is not a performance outlier in either direction; instead, it sits in a theoretical middle ground, a position that is largely academic given its end-of-life production status and the lack of comparable scores to anchor its placement.

Benchmark Performance

The benchmark results for the GeForce PCX 5950 are, in a word, sparse. The database lists no individual benchmark scores, and the aggregate average benchmark score is exactly zero. This does not indicate a failure of the hardware, but rather that the GPU has no recorded entries in the benchmark suite, likely due to its age and the fact that it predates modern testing methodologies. The percentileVsAllGpus field, however, provides a single data point: 50. This means that, in the theoretical distribution of all GPUs ever tested, the PCX 5950 would outperform exactly half and be outperformed by the other half. This is a remarkably neutral result, and it aligns with the hardware specifications that suggest a mid-range part from its era.

Examining the core specifications reveals why the GPU lands at this median. The chip is the NV38, built on a 130 nm process at TSMC, with 135 million transistors on a 207 mm² die, yielding a transistor density of 652.2K per square millimeter. The pixel rate is 1.900 GPixel/s, and the texture rate is 3.800 GTexel/s. These figures are modest by any modern standard, but they are internally consistent: the texture rate is exactly double the pixel rate, which is typical for a GPU with 8 texture mapping units (TMUs) and 4 render output units (ROPs). The memory subsystem is equally modest, with 256 MB of GDDR3 on a 256-bit bus, running at 425 MHz with an effective data rate of 850 Mbps, producing a bandwidth of 27.20 GB/s.

Without rival scores, interpreting the performance requires extrapolation from the fixed-function pipeline. The 8 TMUs and 4 ROPs indicate that this is not a high-end part; a high-end GPU of the same generation would have more of both. The 1.900 GPixel/s fill rate means that at a resolution of 1920x1080, the GPU could theoretically fill about 0.9 frames per second with a full-screen pass, though real-world game performance would be heavily dependent on texture complexity and shader usage. The 27.20 GB/s bandwidth is similarly restrictive, capping the amount of texture data that can be streamed per second. The data suggests that the PCX 5950 is a part designed for 32-bit color, single-texture, low-detail workloads, and its median percentile reflects that it is neither a bottleneck nor a breakthrough — it simply exists in the middle of the pack.

Who Should Consider It

Given the lack of benchmark scores, recommendations must be grounded in the raw specifications and the API support levels. The GeForce PCX 5950 supports DirectX 9.0a and OpenGL 1.5 (full) with partial OpenGL 2.0 support. This is a critical limitation: DirectX 9.0a is an early revision of the DirectX 9 specification, lacking many of the features that later revisions like 9.0b and 9.0c added, particularly in the realm of shader model support and advanced texture compression. For modern gaming, this GPU is not viable; the API support alone disqualifies it from any title that requires DirectX 10 or later, and even early DirectX 9 titles that rely on shader model 2.0b or 3.0 would be unplayable.

The data indicates that the intended use case is legacy software, specifically early 2000s titles that were designed around the DirectX 8.1 and early DirectX 9.0a feature sets. At a resolution of 800x600 or 1024x768, with reduced texture detail and no anti-aliasing, the 1.900 GPixel/s fill rate could handle simple geometry and basic lighting. However, the 256 MB of GDDR3 is a hard constraint; any texture set that exceeds this amount will cause thrashing, and the 27.20 GB/s bandwidth will become a bottleneck in scenes with heavy overdraw. For users with a retro PC collection, this GPU could be a functional choice for titles like early 2000s shooters or strategy games, but it is not a general-purpose card. The dual-slot design and passive cooling (no power connector required) suggest it was designed for office or basic multimedia systems, not gaming rigs. The median percentile reinforces this: it is a GPU that does nothing exceptionally well, and its only recommendation is for users who need a PCIe 1.0 x16 card with no auxiliary power and a 250 W PSU.

Power and Cooling

The power profile of the GeForce PCX 5950 is exceptionally modest, as evidenced by the thermal design power (TDP) of 57 W. This is a low figure, indicating that the GPU does not generate significant heat and does not require an aggressive cooling solution. The card is a dual-slot design, which is unusual for such a low-power part, but this may be due to the passive heatsink necessary to cool the NV38 chip without a fan. The power connector field is listed as "None," which means the card draws all its power from the PCIe 1.0 x16 slot itself. This is a significant advantage for compatibility: any system with a functional PCIe slot can run this card without checking for auxiliary 6-pin or 8-pin connectors.

The suggested power supply unit (PSU) is 250 W. This is a low threshold, and it implies that the rest of the system must also have modest power consumption. A modern system with a high-end CPU and multiple drives would likely exceed this budget, but a period-correct system from 2004 with a single hard drive and a low-power CPU would be fine. The dual-slot cooling solution, combined with the lack of a fan connector, suggests that the card is intended to be passively cooled, relying on case airflow to dissipate the 57 W. This is a design choice that favors silence over performance, and it further reinforces the GPU's positioning as a non-gaming, office-oriented part. The absence of a power connector means that installation is trivial, but the dual-slot form factor requires a case with adequate clearance for the second slot bracket.

How It Compares

The nearestRivals array in the FACT PACK is empty, which means there are no direct comparison points in the database for the GeForce PCX 5950. This is an unusual situation, as most GPUs have at least one rival listed with a score and a deltaPct. The absence of rivals suggests that the database has not been populated with comparable GPUs from the same era, or that the PCX 5950's performance is so unique that it does not align with any other tested part. Without deltaPct values, it is impossible to state a percentage difference against any competitor.

However, the predecessor and successor fields provide a frame of reference. The predecessor is the GeForce 4 Ti, which was a high-end part in its day, and the successor is the GeForce 6 PCIe, which introduced significant architectural improvements. The PCX 5950 sits between these two, but the data does not include any scores for either, so a quantitative comparison is impossible. The chip is NV38, which is the same core used in the later GeForce FX 5900 series, but the PCX branding and PCIe interface are the distinguishing features. The bus interface is PCIe 1.0 x16, which is a notable upgrade over the AGP interface used by the GeForce 4 Ti, but the performance is likely limited by the older architecture. In the absence of benchmark data, the only conclusion is that the PCX 5950 is a transitional product, bridging the AGP era and the PCIe era, with a spec sheet that places it below the high-end parts of its generation but above the low-end parts.

Ray Tracing and Feature Set

The GeForce PCX 5950 has no ray tracing cores and no tensor cores, as indicated by the null fields in the FACT PACK. This means that hardware-accelerated ray tracing is entirely absent, and any ray-traced effects would have to be computed on the general-purpose shading units, which are not listed but are implied to be insufficient for such workloads. The GPU is not designed for modern rendering techniques; it is a fixed-function part with 8 TMUs and 4 ROPs, and its feature set is limited to the APIs it supports.

The API support is DirectX 9.0a and OpenGL 1.5 (full) with partial OpenGL 2.0. This is a restrictive set. DirectX 9.0a was released in late 2002 and does not include the pixel shader 2.0b or vertex shader 3.0 extensions that came with later revisions. This means that games using those features will not run, or will run with reduced visual fidelity. The partial OpenGL 2.0 support is also a limitation, as OpenGL 2.0 introduced shader model 2.0 features that are only partially implemented here. There is no Vulkan support, which is expected given the GPU's age. The display outputs are 1x DVI, 1x VGA, and 1x S-Video, which covers analog and digital connections for monitors of the era, but there is no HDMI or DisplayPort, so modern displays would require an adapter.

In summary, the feature set is a snapshot of early 2000s graphics technology. The lack of RT and tensor cores is not a deficiency; it is a reflection of the era in which the GPU was designed. The data shows that the PCX 5950 is a legacy part with a narrow feature set, a median performance percentile, and a power profile that is easy to accommodate. Its role in the database is as a historical artifact, not a practical recommendation for any modern workload.