ATI Radeon IGP 320M

The ATI Radeon IGP 320M is an integrated graphics processor from AMD, built on the Rage 6 architecture with a 180 nm process node and 30 million transistors on a 73 mm² die. It targets the low-end portable market, and benchmark data shows it holds a 50th percentile position among all GPUs, though its average benchmark score is 0, indicating it is not competitive with even entry-level discrete solutions. The chip offers a pixel rate of 160.0 MPixel/s and a texture rate of 160.0 MTexel/s, with 1 texture mapping unit and 1 render output unit, reflecting its age and limited capabilities.

Benchmark Performance

The ATI Radeon IGP 320M’s benchmark results are minimal, with an average score of 0 across all tested workloads. This places it at the 50th percentile of all GPUs in the database, a figure that is misleading because the percentile is derived from a sparse dataset; in practice, the score of 0 means it cannot execute modern benchmarks that require shader model support beyond DirectX 7.0. The pixel rate of 160.0 MPixel/s and texture rate of 160.0 MTexel/s are the only quantitative performance indicators available, and both are extremely low by any standard. For context, a single texture unit operating at 160.0 MTexel/s implies that fill-rate-bound tasks, such as high-resolution texture mapping, will degrade rapidly as resolution increases. The lack of any floating-point (FP32 or FP16) throughput data further confirms that the IGP 320M was not designed for compute or modern 3D rendering. Because the nearestRivals array is empty, there are no direct percentage deltas to report; however, the absence of any benchmark scores alongside the 50th percentile suggests that the chip sits at the bottom of the performance curve, with no measurable advantage over any other product in the database. The data shows that the IGP 320M’s performance is effectively negligible for any task beyond basic 2D desktop composition or legacy DirectX 7.0 titles.

How It Compares

The FACT PACK lists no nearest rivals for the ATI Radeon IGP 320M, so direct comparisons with specific competitor models cannot be made. However, the benchmark percentile of 50th versus all GPUs provides a relative anchor: this is the median position, but because the average benchmark score is 0, the percentile likely reflects the distribution of non-zero scores from other GPUs, not the IGP’s own achievement. In practical terms, the IGP 320M sits far below any discrete GPU from its era, including those with a single texture unit or a single render output unit, because those products at least had dedicated memory and higher clock rates. The chip’s architecture (Rage 6) is a predecessor to later integrated graphics, and its successor is listed as TeraScale IGP, which implies that the 320M is a baseline from which AMD’s integrated graphics evolved. Without rival data, the analysis must rely on the raw specifications: 1 TMU and 1 ROP, combined with a 160.0 MPixel/s pixel rate, indicate that even the most basic 3D workloads from the early 2000s would run at low resolutions and frame rates. The chip’s production status is end-of-life, so no new comparisons are possible; any user encountering this GPU in a system today would find it outperformed by every other product in the database, including those with equally low scores, because the 320M has no measurable benchmark output.

Ray Tracing and Feature Set

The ATI Radeon IGP 320M has no ray tracing cores and no tensor cores, as these features did not exist in the Rage 6 architecture. The chip supports DirectX 7.0 and OpenGL 1.4, with no Vulkan support listed. This API set is a critical limitation: DirectX 7.0 lacks programmable shaders (which arrived with DirectX 8.0), meaning the IGP 320M cannot run any game or application that requires pixel shaders or vertex shaders. The absence of Vulkan support further restricts compatibility to legacy titles or software rendering. The texture unit count of 1 and the 160.0 MTexel/s texture rate limit texture filtering quality; anisotropic filtering and mipmap generation, if supported, would be performed at very low speeds. The pixel rate of 160.0 MPixel/s means that even simple 2D operations, such as moving windows or rendering video, would consume a significant portion of the GPU’s capacity at higher resolutions. The chip’s display outputs are listed as "Portable Device Dependent," which means the IGP 320M was designed for laptops and relied on the system’s display panel. There is no hardware support for ray tracing, mesh shaders, or any modern rendering technique; the feature set is strictly limited to fixed-function 3D from the DirectX 7.0 era. Consequently, any workload that stresses geometry or pixel throughput will be bottlenecked by the single TMU and single ROP.

FAQ

Q: What is the maximum API version supported by the ATI Radeon IGP 320M?

A: The chip supports DirectX 7.0 and OpenGL 1.4, with no Vulkan support.

Q: How much dedicated video memory does the ATI Radeon IGP 320M have?

A: The memory size is "System Shared," meaning it uses a portion of the system’s main RAM rather than having its own dedicated VRAM.

Q: What is the memory bus width of this GPU?

A: The bus width is "System Shared," so it depends entirely on the host system’s memory architecture; the bandwidth is listed as "System Dependent."

Q: Does the ATI Radeon IGP 320M support ray tracing?

A: No, it has no ray tracing cores and no tensor cores; the architecture is Rage 6, which predates such features.

Q: What is the transistor count and die size of the IGP 320M?

A: It has 30 million transistors on a 73 mm² die, manufactured on a 180 nm process node.

Q: Is the ATI Radeon IGP 320M still in production?

A: No, its production status is end-of-life, and it was released on 2002-10-04.

Who Should Consider It

Given the average benchmark score of 0 and the 50th percentile positioning, the ATI Radeon IGP 320M should only be considered by users who need a basic display output for a legacy laptop, not for gaming or graphics work. The pixel rate of 160.0 MPixel/s and texture rate of 160.0 MTexel/s mean that any 3D application will run at very low resolutions (likely below standard VGA levels) and with minimal detail settings. For 2D desktop use, such as word processing or web browsing on an old operating system, the IGP 320M is adequate because it does not need to render complex scenes. However, the lack of shader support (DirectX 7.0) eliminates all games from the DirectX 8.0 era onward, and even older titles will struggle due to the single TMU and single ROP. Users with a system containing this GPU should avoid any resolution higher than what the portable device’s panel natively supports, as the system-dependent memory bandwidth will further constrain performance. The chip’s 73 mm² die and 30 million transistors indicate a very simple design, so expectations must be minimal. In short, the IGP 320M is only viable for non-accelerated 2D tasks or as a fallback display adapter; it is not a gaming or multimedia solution by any measure.

Memory Subsystem

The ATI Radeon IGP 320M uses "System Shared" memory for its VRAM, which means it has no dedicated memory chips of its own. The memory type is also "System Shared," and the bus width is "System Shared," so the GPU relies entirely on the host system’s main memory controller. The bandwidth is listed as "System Dependent," meaning its performance varies wildly based on the laptop’s RAM speed, bus width, and whether the system uses single-channel or dual-channel memory. This is a severe limitation because integrated GPUs that share system memory must compete with the CPU for bandwidth, and the IGP 320M’s 160.0 MPixel/s pixel rate is already low enough that memory throughput will not be a bottleneck at typical resolutions—the GPU itself is the limiting factor. For high resolutions, the system-dependent bandwidth becomes problematic because texture reads and framebuffer writes require more memory traffic; however, the chip cannot realistically drive high resolutions anyway. The lack of a dedicated memory bus means there is no fixed bandwidth number to report, only the qualitative "System Dependent." This design choice was common for early integrated graphics, but it caps the IGP 320M’s performance at levels far below any discrete GPU with even a 64-bit memory interface. Users should expect that increasing the system RAM speed will yield marginal gains, but the GPU’s 1 TMU and 1 ROP will saturate long before memory bandwidth becomes the primary constraint.

Power and Cooling

The ATI Radeon IGP 320M has no listed TDP (thermal design power), which is typical for integrated graphics that share the system’s thermal solution. The slot width is "IGP," indicating it is not a separate card but an integrated graphics processor on the motherboard or chipset. The power connectors are listed as "None," and there is no suggested PSU because the GPU draws power from the motherboard’s regulated supply rather than a dedicated connector. The lack of a TDP figure means that thermal management is entirely dependent on the laptop’s cooling system, which is expected for a 180 nm chip with 30 million transistors. The chip’s low complexity (1 TMU, 1 ROP) means power draw is minimal, but the 180 nm process node is relatively large by modern standards, so heat generation per transistor is higher than newer parts. Still, without a TDP, the data cannot quantify power consumption. The system’s power supply requirements are not listed, but because the IGP 320M uses no external power connectors, any laptop that supports the chip’s AGP 4x bus interface will have sufficient power delivery. The absence of a suggested PSU is notable; for a desktop system with this IGP, the power supply would be sized by the CPU and other components, not the GPU. Cooling is passive or shared with the system’s existing fan, and the chip’s end-of-life status means no active cooling solutions are manufactured for it. The data shows no thermal throttling information, but given the low pixel and texture rates, the GPU is unlikely to generate significant heat under load.