S3 GammaChrome S18 Pro

The S3 GammaChrome S18 Pro is an end-of-life graphics card built on the 130 nm process at TSMC, featuring the Metropolis chip under the GammaChrome architecture. It is positioned with a 50th percentile ranking among all GPUs in the database, indicating a midpoint performance tier, though its average benchmark score is recorded as zero, reflecting the absence of standardized test data in the current set. The card targets legacy DirectX 9.0 applications and is equipped with 256 MB of DDR memory on a 128-bit bus, yielding a bandwidth of 11.20 GB/s, which aligns with its early-2000s design context.

Benchmark Performance

The S3 GammaChrome S18 Pro’s benchmark profile is defined by its pixel rate of 1.600 GPixel/s and texture rate of 1.600 GTexel/s, both derived from its 4 TMUs and 4 ROPs operating in tandem. These figures represent a balanced fill-rate capability for the era, but the card’s 50th percentile ranking places it exactly at the median of all GPUs in the database, suggesting that its raw throughput is neither exceptional nor deficient relative to the broader historical spectrum. The absence of any benchmark scores in the data means direct numerical comparisons with specific rivals are unavailable; however, the percentile field indicates that half of all tracked GPUs perform better and half perform worse, a position that underscores its mid-pack status. The memory clock of 350 MHz, with 700 Mbps effective, contributes to the 11.20 GB/s bandwidth, which is modest by modern standards but was adequate for the 128-bit interface’s target resolutions. In practical terms, the pixel and texture rates of 1.600 each suggest that the card can handle 32-bit color at common 2000s resolutions without bottlenecking on fill-rate-limited scenes, though geometry and shader complexity would likely constrain it in later titles. The lack of FP32 or FP16 throughput data prevents a precise compute comparison, but the symmetry between pixel and texture rates indicates a simple pipeline with no dedicated shader array differentiation. Given the 50th percentile, the S18 Pro’s performance in legacy DirectX 9.0 benchmarks would likely fall near the middle of a hypothetical distribution, with the 4 TMUs and 4 ROPs providing a consistent baseline for texture-heavy workloads. The effective memory speed of 700 Mbps, while low against subsequent DDR2 and DDR3 parts, is sufficient for the 256 MB framebuffer’s needs, especially when paired with the 128-bit bus to sustain the 11.20 GB/s throughput. Overall, the data suggests a card that delivers predictable, mid-tier performance for its generation, with no extreme highs or lows in the measured parameters.

Ray Tracing and Feature Set

The S3 GammaChrome S18 Pro does not include dedicated ray tracing cores or tensor cores, as these fields are null in the specification, indicating that the architecture predates hardware-accelerated ray tracing and AI-based tensor operations. Instead, the card relies on a conventional rasterization pipeline, with its feature set anchored by API support for DirectX 9.0 and OpenGL 1.4, with no Vulkan compatibility listed. This API profile means the card is limited to DirectX 9.0-era shader models, typically Shader Model 2.0 or 3.0 depending on driver maturity, but the absence of explicit shader unit counts in the data leaves the exact capability unquantified. The 4 TMUs and 4 ROPs form the core of the rendering backend, supporting texture mapping and pixel output at the 1.600 GTexel/s and 1.600 GPixel/s rates, respectively. For ray tracing specifically, the lack of RT cores means any such workload would be executed via compute shaders on the general pipeline, which, without FP32 data, cannot be assessed for efficiency. The memory subsystem, with 256 MB of DDR at 11.20 GB/s, provides a limited working set for large textures or geometry, but is consistent with the DirectX 9.0 era’s typical requirements. The display outputs—1x DVI, 1x VGA, and 1x S-Video—reflect the card’s target audience for CRT and early LCD monitors, with no support for modern digital-only interfaces. The PCIe 2.0 x16 bus interface is notably newer than the card’s 2005 release date, suggesting a later re-release or compatibility update, though it ensures broad motherboard support. In summary, the S18 Pro’s feature set is firmly rooted in rasterization, with no ray tracing or tensor capabilities, and its DirectX 9.0 and OpenGL 1.4 support define its software ecosystem as legacy-focused. The absence of Vulkan is expected for the era, as that API did not exist commercially, and the card’s 130 nm process node limits any advanced feature integration.

How It Compares

The nearestRivals array is empty for the S3 GammaChrome S18 Pro, meaning no direct competitor scores or deltaPct values are available for quantitative comparison. This absence requires a qualitative assessment based on the card’s own specifications and its 50th percentile ranking. Against hypothetical rivals from the same 130 nm era, the S18 Pro’s 11.20 GB/s bandwidth and 1.600 GPixel/s fill rate would position it below higher-end cards that typically featured 256-bit or wider memory buses and more TMUs/ROPs, but above entry-level parts with 64-bit buses and lower clock speeds. The 256 MB memory capacity was standard for mid-range cards in 2005, so the S18 Pro likely competed on parity in capacity but lagged in bandwidth against rivals using faster DDR2 or GDDR3 memory, which could achieve 16-32 GB/s. The 4 TMUs and 4 ROPs are a modest count, suggesting that texture-heavy scenes would see lower throughput than rivals with 8 or 16 TMUs, which were common in the performance segment. The 50th percentile ranking reinforces this mid-pack positioning, implying that the S18 Pro outperforms lower-tier integrated graphics and older cards, but falls short of contemporary discrete competitors with more robust pipelines. The DirectX 9.0 support matches the mainstream standard of the time, but rivals offering DirectX 9.0c with Shader Model 3.0 might have an edge in feature completeness, though this is not quantified in the data. The 12 W TDP is remarkably low, suggesting that the S18 Pro was designed for efficiency rather than peak performance, which could make it favorable in compact systems where rivals with higher power draw required larger cooling solutions. The PCIe 2.0 x16 interface is a forward-looking feature, but it does not inherently boost performance over PCIe 1.0 in this class. Ultimately, without rival data, the S18 Pro’s comparison is defined by its own specs: a balanced, low-power card that sits at the median of the GPU landscape, with no clear superiority or deficiency in any single metric.

Power and Cooling

The S3 GammaChrome S18 Pro has a TDP of 12 W, a remarkably low figure that places it in the energy-efficient category, even for its 2005 release era. This low power draw means that the card generates minimal heat, and its single-slot cooling design is sufficient to dissipate the thermal output without elaborate heatsinks or fans, though the data does not specify the exact cooler type. The suggested PSU is 200 W, which is a modest requirement that allows the card to be installed in systems with basic power supplies, and it does not list any power connectors, indicating that it draws all power from the PCIe 2.0 x16 slot. This is a significant advantage for upgrade scenarios where older or lower-wattage power supplies are present, as the 12 W TDP is well within the 75 W typically provided by the slot. The single-slot form factor further enhances compatibility with slim or densely populated cases, and the lack of auxiliary power connectors means no cable management is needed. The 130 nm process node contributes to the low TDP, as this older manufacturing technology, while less efficient than modern nodes, is still capable of running such a minimal chip at 12 W. For cooling, the single-slot design implies a passive or low-profile active solution, but the data does not specify fan noise or heatsink dimensions. The 200 W PSU recommendation is a conservative figure, providing ample headroom for the card’s 12 W draw along with typical system components like a CPU, drives, and motherboard. In practical terms, the S18 Pro’s power and cooling profile is a highlight, offering a plug-and-play experience with no additional cabling or PSU upgrades required for most systems. The absence of power connector specifications confirms that the card avoids the 6-pin or 8-pin requirements seen in higher-end GPUs, reinforcing its position as a low-power solution. The combination of 12 W TDP, single-slot cooling, and 200 W PSU guidance makes the S18 Pro an attractive option for legacy system builds or office PCs where energy efficiency and simplicity are prioritized over raw performance.

FAQ

Q: What is the memory configuration of the S3 GammaChrome S18 Pro?

A: The card features 256 MB of DDR memory on a 128-bit bus, with a memory clock of 350 MHz and 700 Mbps effective speed, delivering a bandwidth of 11.20 GB/s.

Q: Does the S3 GammaChrome S18 Pro support ray tracing?

A: No, the card has no dedicated ray tracing cores or tensor cores, as those fields are null in the specifications, and its feature set is limited to rasterization with DirectX 9.0 and OpenGL 1.4 support.

Q: What is the power consumption of the S3 GammaChrome S18 Pro?

A: The TDP is 12 W, with a suggested PSU of 200 W. The card does not list any power connectors, meaning it draws power solely from the PCIe 2.0 x16 slot.

Q: What display outputs are available on the S3 GammaChrome S18 Pro?

A: The card provides 1x DVI, 1x VGA, and 1x S-Video outputs, supporting legacy monitors and TV connections.

Q: What is the production status and release date of the S3 GammaChrome S18 Pro?

A: The card is end-of-life, with a release date of March 8, 2005, and its successor is the Chrome series.

Q: What is the pixel and texture fill rate of the S3 GammaChrome S18 Pro?

A: The pixel rate is 1.600 GPixel/s, and the texture rate is 1.600 GTexel/s, both derived from the 4 TMUs and 4 ROPs operating at the card’s core clock.