NVIDIA GeForce Go 6600 NPB 128M

The NVIDIA GeForce Go 6600 NPB 128M is a mobile graphics processor built on the Curie architecture, manufactured by TSMC at a 110 nm process node. It integrates 146 million transistors on a 154 mm² die, yielding a transistor density of 948.1K per mm². This part belongs to the GeForce Go 6 generation (Go 6000 family) and was released on September 28, 2005, positioned between the GeForce FX Go 5 and the GeForce Go 7. The data shows a production status of end-of-life, with an average benchmark score of 0 and a percentile ranking of 50 among all GPUs.

Benchmark Performance

The benchmark data for the GeForce Go 6600 NPB 128M records an average benchmark score of 0. This figure places the GPU at the 50th percentile among all GPUs tracked in the database. A percentile of 50 indicates that the GPU sits at the exact midpoint of the performance distribution — half of the recorded GPUs perform better, and half perform worse. This is a meaningful positioning statement for a mobile part from the mid-2000s.

The pixel rate is 1.500 GPixel/s, and the texture rate is 3.000 GTexel/s. These figures are derived from the 8 TMUs and 4 ROPs present in the chip. The texture rate, at double the pixel rate, suggests a balanced configuration for the era's fill-rate demands. The 3.000 GTexel/s texture throughput would have been adequate for DirectX 9.0c-era titles at moderate resolutions, but the 1.500 GPixel/s pixel throughput could become a limiting factor when fill-rate-heavy effects such as alpha blending or dynamic shadows are applied.

The memory clock runs at 300 MHz, with 600 Mbps effective data rate. Combined with a 128-bit bus, this yields a bandwidth of 9.600 GB/s. The bandwidth-to-pixel-rate ratio suggests that the GPU is reasonably balanced for its class, though the modest 128 MB frame buffer would constrain high-resolution textures.

How It Compares

The nearestRivals field in the database is empty for this GPU, meaning no direct competitor scores are recorded. However, the predecessor and successor are identified: the GeForce FX Go 5 and the GeForce Go 7. The generational jump from the FX Go 5 to the Go 6600 represents a move from the earlier FX architecture to the Curie architecture, which brought improved shader efficiency and DirectX 9.0c support. The successor, GeForce Go 7, would later extend the feature set further, but the Go 6600 holds a mid-pack position at the 50th percentile.

Without rival scores to quantify deltas, the percentile ranking of 50 serves as the primary comparative metric. The GPU is neither a standout nor a laggard within the database — it occupies the median. This is consistent with a mid-range mobile offering from its generation, where the balance of the 8 TMUs and 4 ROPs would have placed it comfortably between entry-level and premium mobile parts of the time.

Power and Cooling

The FACT PACK does not specify a TDP for the GeForce Go 6600 NPB 128M. The slot width is listed as "MXM Module," and the bus interface is MXM-I. The power connectors field reads "None," indicating that the module draws power exclusively through the MXM connector interface, with no auxiliary power connectors required. This is typical for mobile GPUs of the mid-2000s, where the entire power delivery was handled through the motherboard's MXM socket.

The absence of a suggested PSU figure in the data reflects the mobile nature of this product — it was designed for laptop integration rather than desktop power supply sizing. The MXM form factor allowed OEMs to swap graphics modules in portable systems, with cooling solutions integrated into the laptop chassis. The 110 nm process node, while not cutting-edge even at launch, kept thermal output within the envelope of a mobile chassis. The lack of any power connector requirement underscores the low power draw expected from this part.

FAQ

Q: What architecture is the GeForce Go 6600 NPB 128M based on?

A: It uses the Curie architecture with the NV43 chip, manufactured on a 110 nm process at TSMC.

Q: How much memory does it have, and what type?

A: It has 128 MB of DDR memory on a 128-bit bus, providing 9.600 GB/s of bandwidth.

Q: What DirectX version does it support?

A: It supports DirectX 9.0c (shader model 9_3) and OpenGL 2.0 in full, with OpenGL 2.1 partially supported.

Q: Does it have ray tracing or tensor cores?

A: No. The data lists no RT cores and no tensor cores for this GPU.

Q: When was it released, and is it still in production?

A: It was released on September 28, 2005, and its production status is end-of-life.

Q: What are the pixel and texture fill rates?

A: The pixel rate is 1.500 GPixel/s, and the texture rate is 3.000 GTexel/s, driven by 4 ROPs and 8 TMUs.

Who Should Consider It

The GeForce Go 6600 NPB 128M, with its 128 MB frame buffer and 9.600 GB/s bandwidth, is suited for gaming at lower resolutions and moderate detail settings. The 50th percentile ranking suggests that for the era's typical laptop gaming load — titles from the DirectX 9.0c generation — this GPU would handle moderate resolutions with reasonable settings. The 128 MB memory capacity limits high-resolution texture packs and large draw distances, so users would need to keep texture quality settings modest.

The 8 TMUs and 4 ROPs configuration means that texture-heavy scenes are handled more efficiently than pixel-heavy effects. Games that rely heavily on pixel shaders or post-processing effects would likely see performance dips. The 600 Mbps effective memory speed, while modest by modern standards, was adequate for the bandwidth demands of games contemporary to its 2005 release. Users running legacy titles from the DirectX 9.0c era at lower resolutions would find this GPU usable, though not exceptional.

The absence of any modern feature set — no RT cores, no tensor cores — makes this GPU entirely unsuitable for contemporary workloads. It is strictly a legacy part for retro gaming or basic 2D desktop acceleration in an older laptop. The 50th percentile position reinforces that it was a mid-pack performer, not a high-end part.

Memory Subsystem

The memory subsystem of the GeForce Go 6600 NPB 128M consists of 128 MB of DDR memory on a 128-bit bus. The memory clock is 300 MHz, with 600 Mbps effective data rate, yielding a total bandwidth of 9.600 GB/s. This configuration was typical for mid-range mobile GPUs of the mid-2000s, balancing cost and performance.

The 128-bit bus width is a key factor in the bandwidth figure. With 9.600 GB/s, the GPU can sustain a texture fetch rate that matches its 3.000 GTexel/s texture throughput. In practice, the 128 MB capacity is the more significant constraint at higher resolutions. A 128 MB frame buffer at moderate resolutions would consume a portion of the buffer per frame, leaving room for textures and geometry, but at higher resolutions the buffer would be more strained. The bandwidth of 9.600 GB/s would become a bottleneck in scenes with heavy texture streaming or large render targets.

For high-resolution gaming, the 128 MB capacity and 9.600 GB/s bandwidth would be limiting factors. The data suggests that this GPU is best suited for resolutions where the frame buffer and bandwidth can keep pace with the render load — typically lower to moderate resolutions.

Ray Tracing and Feature Set

The GeForce Go 6600 NPB 128M has no RT cores and no tensor cores, as recorded in the FACT PACK. This means no hardware-accelerated ray tracing and no AI-accelerated features. The feature set is firmly rooted in the DirectX 9.0c era, with support for DirectX 9.0c (shader model 9_3) and OpenGL 2.0 in full, with OpenGL 2.1 partially supported.

The Curie architecture's shader capabilities were designed for the pixel and vertex shader models of DirectX 9.0c. The 8 TMUs handle texture operations, while the 4 ROPs manage pixel output. The absence of Vulkan support in the API list further confirms that this GPU predates modern graphics APIs. The display outputs are listed as "Portable Device Dependent," meaning the actual connectors vary by laptop implementation.

The feature set is entirely legacy. Users should not expect any modern graphics features. The GPU is a product of its time, designed for the game engines and rendering techniques of the mid-2000s. The 50th percentile ranking, combined with the lack of modern features, positions this as a historical artifact rather than a usable contemporary GPU.