ATI Mobility Radeon HD 4200 IGP

Memory Subsystem

The ATI Mobility Radeon HD 4200 IGP is an integrated graphics processor that draws its memory directly from the host system. Rather than carrying dedicated VRAM, its frame buffer is "System Shared," meaning the memory size, type, and bus width are all defined by whatever system memory the laptop manufacturer pairs with the chip. This design inherently limits peak bandwidth, which is listed as "System Dependent" — the effective throughput will vary dramatically based on whether the host system uses slower or faster system RAM.

Because there is no dedicated VRAM, high-resolution gaming places an immediate strain on the shared memory pool. At lower resolutions, the system can keep the working set small enough to remain within the available shared bandwidth, but as resolution climbs, the IGP must compete with the CPU for the same memory controller. Benchmark data shows this part sits at the 50th percentile among all GPUs, which places it squarely in the middle of the pack for an integrated solution, but that percentile is largely a reflection of its modest compute resources rather than any memory advantage. The absence of a dedicated bus width figure means there is no fixed ceiling; the practical limit is set by the host platform's memory architecture.

For users targeting 720p or below, the shared memory arrangement is workable for older or less demanding titles. At 1080p, however, the bandwidth bottleneck becomes pronounced, as the system must constantly shuffle data between the CPU and GPU over the same channels. The pixel rate of 2.000 GPixel/s and texture rate of 2.000 GTexel/s further indicate that the part is not engineered for high-resolution texture-heavy workloads. In summary, the memory subsystem is a passthrough to system resources, and its performance is entirely contingent on the surrounding platform.

Ray Tracing and Feature Set

The Mobility Radeon HD 4200 IGP does not include dedicated ray tracing cores or tensor cores. Its architecture, TeraScale, predates hardware-accelerated ray tracing by more than a decade, and the chip's 40 shading units are general-purpose ALUs with no specialized traversal or bounding-volume-hierarchy hardware. As a result, any ray-traced effects would need to be computed in software, which is impractical given the part's FP32 throughput of 40.00 GFLOPS.

The feature set is defined by its API support: DirectX 10.1 (feature level 10_1) and OpenGL 3.3. DirectX 10.1 brings incremental improvements over 10.0, including better shader model 4.1 support and enhanced texture compression, but it lacks the compute shaders and tessellation that arrived with DirectX 11. OpenGL 3.3 support is similarly dated, aligning with the late-2000s generation. The part has no Vulkan support, which further restricts modern compatibility. For contemporary titles that require DirectX 12 or Vulkan, this IGP is effectively excluded from hardware acceleration. The 40 shading units and 4 texture mapping units (TMUs) and 4 render output units (ROPs) represent a minimal configuration, and the 2.000 GPixel/s fill rate confirms that even basic pixel shading tasks are limited. In practice, the feature set is sufficient for era-appropriate games that target DirectX 10.1 or OpenGL 3.3, but it offers no headroom for future API developments.

Power and Cooling

The Mobility Radeon HD 4200 IGP is an integrated graphics processor, classified as "IGP" in slot width, meaning it occupies no expansion slot and is soldered directly onto the motherboard. Its power connector requirement is "None," as the chip draws all power from the motherboard's shared power delivery rather than a dedicated PCIe power cable. There is no TDP figure listed in the data, which is typical for IGPs of this era; the thermal envelope is implicitly managed by the laptop's overall cooling solution.

Because there is no dedicated power connector and no suggested PSU rating, the power delivery is entirely handled by the host system's existing regulators. The 55 nm process node, while not cutting-edge for its time, keeps power draw modest enough that a passive cooling solution or a small fan is generally sufficient. The data does not specify any cooler dimensions or noise characteristics, but the low transistor count of 181 million and die size of 67 mm² suggest a compact die that does not generate excessive heat. For system builders, the practical implication is that no additional power supply headroom is required beyond what the laptop's CPU and other components demand. The PCIe 1.0 x16 bus interface is the only external connection, and it is used for the display output rather than for supplementary power.

How It Compares

The nearestRivals array is empty, meaning the benchmark database contains no direct comparative scores for this part. Without rival names, scores, or deltaPct values, any positional analysis must rely on the absolute metrics available: the 50th percentile ranking among all GPUs and the listed compute rates. The 40.00 GFLOPS FP32 throughput and 2.000 GPixel/s pixel rate are the primary quantitative anchors. Against hypothetical peers from the same TeraScale generation, this IGP would likely rank near the bottom due to its shared memory and minimal shading units, but the lack of rival data prevents a definitive score-based comparison. The 50th percentile is a neutral placement, suggesting that half of all GPUs in the database score higher and half score lower, but this percentile is computed across all GPUs including discrete parts; within the integrated-only subset, its position would be more favorable. The absence of an avgBenchmarkScore (0) further indicates that no actual benchmark runs have been recorded for this part, so the percentile is likely derived from specification-based estimates rather than measured performance.

Who Should Consider It

The Mobility Radeon HD 4200 IGP is not suited for modern gaming or GPU-accelerated workloads. Its 40 shading units and 40.00 GFLOPS FP32 throughput place it firmly in the entry-level integrated category from the late 2000s. Users who play titles released before 2010, particularly those designed for DirectX 10.1 or OpenGL 3.3, may find it serviceable at low resolutions (below 720p) and with reduced detail settings. The 2.000 GPixel/s fill rate means that even simple 2D interfaces can be rendered smoothly, but any 3D scene with moderate complexity will tax the part.

For productivity tasks that do not rely on GPU acceleration — such as word processing, spreadsheet work, or web browsing with JavaScript-heavy sites — the IGP is adequate, as those workloads are largely CPU-bound. The shared memory architecture is a double-edged sword: it allows the GPU to use as much memory as the system can spare, but it also means that memory-intensive applications will slow down both the CPU and GPU. Users with 4 GB or more of system RAM will see better performance than those with 2 GB, as the GPU can claim more of the shared pool. However, no specific memory capacity figures are provided in the data, so this remains a qualitative recommendation.

The part is end-of-life, with a production status of "End-of-life," and was released in 2009. It is not a candidate for new purchases; it is only relevant for owners of legacy laptops who cannot upgrade. At the 50th percentile, it is neither a standout nor a complete outlier — it is a middle-of-the-road IGP that meets the minimum requirements for basic computing and very light gaming, but it will struggle with any title that demands more than 2.000 GPixel/s of fill rate or more than 40 GFLOPS of compute.

FAQ

Q: How much VRAM does the ATI Mobility Radeon HD 4200 IGP have?

A: The memory size is "System Shared," meaning it has no dedicated VRAM and instead borrows from the host system's RAM. The total available memory depends on how much system RAM is installed and how the BIOS allocates it.

Q: Does this GPU support DirectX 12 or Vulkan?

A: No. The part supports DirectX 10.1 (feature level 10_1) and OpenGL 3.3. It does not support Vulkan. DirectX 12 and Vulkan titles will not run with hardware acceleration.

Q: What is the power consumption and does it need a power cable?

A: No TDP is listed, and the power connector requirement is "None." It is an IGP that draws power from the motherboard, so no additional power supply or cable is required.

Q: Can this GPU handle 1080p gaming?

A: The pixel rate is 2.000 GPixel/s and the texture rate is 2.000 GTexel/s. These figures are very low for 1080p gaming, and the shared memory bandwidth further limits high-resolution performance. It is best suited for 720p or below with older titles.

Q: What is the bus interface for this IGP?

A: The bus interface is PCIe 1.0 x16. It is an integrated part, so it does not plug into a slot; the interface is used for communication with the rest of the system.

Q: When was this product released and what is its production status?

A: The release date is September 9, 2009, and the production status is "End-of-life." It is no longer manufactured and is only found in legacy laptops.