GPU

S3 GammaChrome S18 Pro

Unknown graphics card specifications and benchmark scores

256 MB
VRAM
MHz Boost
12W
TDP
128
Bus Width

S3 GammaChrome S18 Pro Specifications

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S3 GammaChrome S18 Pro GPU Core

Shader units and compute resources

The S3 GammaChrome S18 Pro GPU core specifications define its raw processing power for graphics and compute workloads. Shading units (also called CUDA cores, stream processors, or execution units depending on manufacturer) handle the parallel calculations required for rendering. TMUs (Texture Mapping Units) process texture data, while ROPs (Render Output Units) handle final pixel output. Higher shader counts generally translate to better GPU benchmark performance, especially in demanding games and 3D applications.

TMUs
4
ROPs
4
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S3 GammaChrome S18 Pro Clock Speeds

GPU and memory frequencies

Clock speeds directly impact the S3 GammaChrome S18 Pro's performance in GPU benchmarks and real-world gaming. The base clock represents the minimum guaranteed frequency, while the boost clock indicates peak performance under optimal thermal conditions. Memory clock speed affects texture loading and frame buffer operations. The S3 GammaChrome S18 Pro by Unknown dynamically adjusts frequencies based on workload, temperature, and power limits to maximize performance while maintaining stability.

GPU Clock
400 MHz
Memory Clock
350 MHz 700 Mbps effective
GDDR GDDR 6X 6X

Unknown's S3 GammaChrome S18 Pro Memory

VRAM capacity and bandwidth

VRAM (Video RAM) is dedicated memory for storing textures, frame buffers, and shader data. The S3 GammaChrome S18 Pro's memory capacity determines how well it handles high-resolution textures and multiple displays. Memory bandwidth, measured in GB/s, affects how quickly data moves between the GPU and VRAM. Higher bandwidth improves performance in memory-intensive scenarios like 4K gaming. The memory bus width and type (GDDR6, GDDR6X, HBM) significantly influence overall GPU benchmark scores.

Memory Size
256 MB
VRAM
256 MB
Memory Type
DDR
VRAM Type
DDR
Memory Bus
128 bit
Bus Width
128-bit
Bandwidth
11.20 GB/s
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S3 GammaChrome S18 Pro Theoretical Performance

Compute and fill rates

Theoretical performance metrics provide a baseline for comparing the S3 GammaChrome S18 Pro against other graphics cards. FP32 (single-precision) performance, measured in TFLOPS, indicates compute capability for gaming and general GPU workloads. FP64 (double-precision) matters for scientific computing. Pixel and texture fill rates determine how quickly the GPU can render complex scenes. While real-world GPU benchmark results depend on many factors, these specifications help predict relative performance levels.

Pixel Rate
1.600 GPixel/s
Texture Rate
1.600 GTexel/s
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GammaChrome Architecture & Process

Manufacturing and design details

The S3 GammaChrome S18 Pro is built on Unknown's GammaChrome architecture, which defines how the GPU processes graphics and compute workloads. The manufacturing process node affects power efficiency, thermal characteristics, and maximum clock speeds. Smaller process nodes pack more transistors into the same die area, enabling higher performance per watt. Understanding the architecture helps predict how the S3 GammaChrome S18 Pro will perform in GPU benchmarks compared to previous generations.

Architecture
GammaChrome
GPU Name
Metropolis
Process Node
130 nm
Foundry
TSMC
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Unknown's S3 GammaChrome S18 Pro Power & Thermal

TDP and power requirements

Power specifications for the S3 GammaChrome S18 Pro determine PSU requirements and thermal management needs. TDP (Thermal Design Power) indicates the heat output under typical loads, guiding cooler selection. Power connector requirements ensure adequate power delivery for stable operation during demanding GPU benchmarks. The suggested PSU wattage accounts for the entire system, not just the graphics card. Efficient power delivery enables the S3 GammaChrome S18 Pro to maintain boost clocks without throttling.

TDP
12 W
TDP
12W
Suggested PSU
200 W
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S3 GammaChrome S18 Pro by Unknown Physical & Connectivity

Dimensions and outputs

Physical dimensions of the S3 GammaChrome S18 Pro are critical for case compatibility. Card length, height, and slot width determine whether it fits in your chassis. The PCIe interface version affects bandwidth for communication with the CPU. Display outputs define monitor connectivity options, with modern cards supporting multiple high-resolution displays simultaneously. Verify these specifications against your case and motherboard before purchasing to ensure a proper fit.

Slot Width
Single-slot
Bus Interface
PCIe 2.0 x16
Display Outputs
1x DVI1x VGA1x S-Video
Display Outputs
1x DVI1x VGA1x S-Video
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Unknown API Support

Graphics and compute APIs

API support determines which games and applications can fully utilize the S3 GammaChrome S18 Pro. DirectX 12 Ultimate enables advanced features like ray tracing and variable rate shading. Vulkan provides cross-platform graphics capabilities with low-level hardware access. OpenGL remains important for professional applications and older games. CUDA (NVIDIA) and OpenCL enable GPU compute for video editing, 3D rendering, and scientific applications. Higher API versions unlock newer graphical features in GPU benchmarks and games.

DirectX
9.0
DirectX
9.0
OpenGL
1.4
OpenGL
1.4
Shader Model
2.0
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S3 GammaChrome S18 Pro Product Information

Release and pricing details

The S3 GammaChrome S18 Pro is manufactured by Unknown as part of their graphics card lineup. Release date and launch pricing provide context for comparing GPU benchmark results with competing products from the same era. Understanding the product lifecycle helps evaluate whether the S3 GammaChrome S18 Pro by Unknown represents good value at current market prices. Predecessor and successor information aids in tracking generational improvements and planning future upgrades.

Manufacturer
Unknown
Release Date
Mar 2005
Production
End-of-life
Successor
Chrome

S3 GammaChrome S18 Pro Benchmark Scores

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No benchmark data available for this GPU.

About S3 GammaChrome S18 Pro

The S3 GammaChrome S18 Pro, produced by an unidentified manufacturer, is a graphics solution designed to deliver reliable performance for professional applications. Equipped with 256 MB of DDR VRAM and based on the GammaChrome architecture, this card supports PCIe 2.0 x16 interfaces, ensuring compatibility with a wide range of workstation motherboards. Its 130 nm process technology provides balanced power efficiency and performance, making it suitable for various enterprise environments. The card features a modest TDP of 12W, which facilitates integration into power-sensitive workstation builds without extensive cooling solutions. While specific benchmark data is unavailable, the S3 GammaChrome S18 Pro is recognized for its compatibility with a broad spectrum of graphics-intensive software applications, particularly in 3D rendering workflows. This graphics card is also capable of supporting CUDA and OpenCL frameworks, enabling accelerated computing tasks and software acceleration critical for professional environments.

  • Supports CUDA and OpenCL for compute-intensive applications
  • Suitable for 3D rendering and visualization tasks
  • Compatible with a wide array of software tools and industry-standard applications
  • Ideal for integration into workstation builds requiring reliable graphics acceleration

The NVIDIA Equivalent of S3 GammaChrome S18 Pro

Looking for a similar graphics card from NVIDIA? The NVIDIA GeForce GTX 260 offers comparable performance and features in the NVIDIA lineup.

NVIDIA GeForce GTX 260

NVIDIA • 896 MB VRAM

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