NVIDIA GeForce4 448 Go

The NVIDIA GeForce4 448 Go represents a distinct entry in the mobile graphics landscape of its era, built on the Celsius architecture with the NV18 chip. Fabricated on a 150 nm process at TSMC, this processor integrates 29 million transistors on a 65 mm² die, yielding a density of 446.2K transistors per square millimeter. As a mobile part, its display outputs are portable device dependent, and it interfaces via AGP 8x with no power connectors required, reflecting its design for notebook integration rather than desktop expansion.

Benchmark Performance

The benchmark data for the GeForce4 448 Go places it at the 50th percentile among all GPUs tracked by this database, with an average benchmark score of 0. This percentile position indicates a median standing in the overall performance distribution, though the absence of any specific benchmark scores in the record means the quantitative assessment relies entirely on architectural capabilities rather than measured results. The pixel rate is 400.0 MPixel/s, while the texture rate reaches 800.0 MTexel/s, figures that derive directly from the 2 ROPs and 4 TMUs operating at the memory clock of 200 MHz (400 Mbps effective).

The ratio between texture and pixel rates, exactly 2:1, reveals a design prioritizing texture throughput over fill-rate operations, a characteristic that influences how the GPU handles varying workloads. With no FP32 or FP16 values listed, the compute capability cannot be expressed in floating-point operations, but the fixed-function pipeline of the Celsius architecture suggests a focus on traditional rasterization rather than general-purpose compute. The 50th percentile ranking implies that in aggregate performance, this GPU sits exactly at the median of all recorded graphics processors, meaning half of the database entries exceed its capabilities and half fall below, a balanced position that reflects its mid-range mobile intent.

How It Compares

The nearestRivals array is empty, meaning no direct competitor data is available for percentile-based comparison. Consequently, positional analysis must reference the broader architectural context provided by its generation and predecessor/successor relationships. The GeForce2 Go serves as the predecessor, indicating that the GeForce4 448 Go represents a generational step forward in the GeForce4 Go lineup, while the GeForce FX Go 5 follows as its successor, suggesting a subsequent architectural evolution. Without rival scores or deltaPct values, the comparative assessment is limited to noting that this GPU occupies a mid-tier position within its own family lineage.

Against its predecessor, the GeForce2 Go, the GeForce4 448 Go offers a newer architecture in Celsius, which typically entails improvements in feature support and efficiency. The shift from GeForce2 Go to GeForce4 448 Go is marked by the transition to DDR memory, as evidenced by the 64 MB DDR configuration with a 128-bit bus, whereas earlier mobile parts often relied on older memory types. Compared to its successor, the GeForce FX Go 5, the GeForce4 448 Go lacks the architectural refinements that came with the next generation, but its 128-bit memory interface and 6.400 GB/s bandwidth provide a baseline that later parts would need to exceed.

Ray Tracing and Feature Set

The GeForce4 448 Go has no ray tracing cores and no tensor cores listed in its specifications, confirming that this GPU predates any dedicated hardware for ray-traced rendering or AI-accelerated workloads. The absence of these units, alongside null Vulkan support, defines a feature set firmly rooted in early 2000s graphics technology. The API support includes DirectX 7.0 and OpenGL 1.5, which were contemporary standards at its release date of 2002-02-28, enabling compatibility with games and applications designed for those interfaces.

DirectX 7.0 support means the GPU is limited to hardware transform and lighting via the fixed-function pipeline, with no programmable shaders available through that API. OpenGL 1.5 adds some extensions beyond the base specification but still falls short of the shader model capabilities that arrived with later DirectX versions. The lack of Vulkan support is expected given the era, and the absence of tensor cores means any machine learning or inference tasks are entirely out of scope for this hardware. The 2 ROPs and 4 TMUs form the core of the rasterization pipeline, with the texture rate of 800.0 MTexel/s indicating how quickly textures can be applied to geometry.

FAQ

Q: What is the memory clock speed of the GeForce4 448 Go?

A: The memory clock is 200 MHz, with an effective data rate of 400 Mbps, which is typical for DDR memory where data transfers on both clock edges.

Q: Does this GPU support hardware ray tracing?

A: No, the GeForce4 448 Go has no ray tracing cores listed in its specifications, and it also lacks tensor cores, so it cannot accelerate ray-traced or AI-based workloads.

Q: What is the pixel fill rate of this processor?

A: The pixel rate is 400.0 MPixel/s, derived from 2 ROPs operating at the core frequency, while the texture rate is 800.0 MTexel/s from 4 TMUs.

Q: What DirectX version does the GeForce4 448 Go support?

A: It supports DirectX 7.0, along with OpenGL 1.5, and has no Vulkan support, limiting it to fixed-function graphics pipelines without programmable shaders.

Q: How much memory does this mobile GPU have and what type?

A: It has 64 MB of DDR memory on a 128-bit bus, providing a bandwidth of 6.400 GB/s, which is modest by modern standards but adequate for its era.

Q: What is the production status of this product?

A: The production status is end-of-life, with a release date of 2002-02-28, and it sits between the GeForce2 Go (predecessor) and GeForce FX Go 5 (successor) in the product stack.

Memory Subsystem

The memory subsystem of the GeForce4 448 Go consists of 64 MB of DDR memory connected via a 128-bit bus, yielding a bandwidth of 6.400 GB/s. This configuration was reasonable for mobile graphics in its release timeframe, balancing capacity against the power and thermal constraints of a laptop chassis. The 128-bit interface is a key determinant of memory throughput, as it allows twice the data per clock cycle compared to a 64-bit bus, though the 200 MHz memory clock (400 Mbps effective) caps the absolute bandwidth figure.

For high-resolution gaming or professional applications, the 64 MB capacity presents a significant limitation, as textures and frame buffers must fit within that allocation. The bandwidth of 6.400 GB/s means that at higher resolutions, where more data must be read from and written to memory, the GPU may become bandwidth-bound, limiting effective performance despite the texture rate of 800.0 MTexel/s. The use of DDR memory, rather than older SDR, provides a marginal efficiency gain, as data is transferred on both clock edges, effectively doubling the data rate relative to a single-data-rate interface at the same clock.

The pixel rate of 400.0 MPixel/s and texture rate of 800.0 MTexel/s must both draw from the same memory bandwidth, meaning that scenes with heavy texture usage can saturate the 6.400 GB/s limit faster than simple color fills. In practice, this creates a balance where the GPU’s compute capabilities are proportional to its memory throughput, a hallmark of fixed-function designs from this period. With no FP32 or FP16 values listed, the numerical compute throughput cannot be quantified, but the memory subsystem’s characteristics define the ceiling for any workload that depends on data movement, making the 128-bit bus and 64 MB capacity the primary constraints for high-resolution operation.