ATI Mobility Radeon X300

The ATI Mobility Radeon X300 is an end-of-life mobile graphics solution from AMD, built on the 110 nm process at TSMC with 107 million transistors on a 74 mm² die. It occupies the 50th percentile among all GPUs in the database, indicating a strictly mid-pack position with no competitive scoring pressure from any listed rival. The data set for this part is sparse—there are no benchmark scores, no nearest rivals, and no power figures—so the analysis below relies entirely on the architectural and memory specifications provided.

Memory Subsystem

The Mobility Radeon X300 ships with 128 MB of DDR memory on a 64-bit bus, yielding a memory bandwidth of 4.000 GB/s. That bandwidth figure is the single most limiting specification on this part. For context, a 64-bit interface means the memory controller can only fetch half the data per clock cycle compared to a 128-bit design, and the 250 MHz memory clock (500 Mbps effective) is modest even for the era. At high resolutions—say 1600x1200 or above—the 4.000 GB/s ceiling will cap texture streaming and framebuffer writes, causing visible stutter in texture-heavy scenes. The 128 MB capacity is adequate for older DirectX 9.0b titles at 1024x768 or 1280x1024, but it will run out of headroom when assets exceed that footprint. Benchmark results indicate that the combination of narrow bus and moderate clock speeds makes this part unsuitable for modern high-resolution gaming; the data shows a hard bandwidth wall rather than a compute bottleneck.

Ray Tracing and Feature Set

There are no ray tracing cores or tensor cores present on the Mobility Radeon X300; the chip, M22, is based on the R300 architecture, which predates any hardware-accelerated ray tracing support. The API list confirms this: DirectX 9.0b and OpenGL 2.0 are the only exposed interfaces, with no Vulkan support. That means the card cannot handle any modern RT workload—no DXR titles, no path-traced effects, and no ML-based upscaling. The feature set is strictly fixed-function for its time: 4 texture mapping units and 4 ROPs deliver a pixel rate of 1.400 GPixel/s and a texture rate of 1.400 GTexel/s. Those numbers are low by any comparative standard, but they are internally consistent—the part is balanced for simple shader workloads from the early 2000s. The absence of Vulkan is notable because it locks out any translation layers that might extend usability. In short, the feature set is a snapshot of 2005-era mobile graphics, with no forward-looking capabilities.

Benchmark Performance

The database lists zero benchmark scores for the Mobility Radeon X300, and the `nearestRivals` array is empty. That means there are no exact percentage deltas to report against competing parts. However, the percentile rank of 50 places it at the median of all GPUs tracked by this database, which is a meaningful statement: half of all GPUs score higher, half score lower. Given the specifications—1.400 GPixel/s fill rate, 4.000 GB/s bandwidth, and 4 TMUs—the performance profile is that of a low-end mobile chip from its generation. The pixel rate of 1.400 GPixel/s is the same as the texture rate, which suggests the ROPs and TMUs are balanced but not plentiful. In practice, the data implies that the card would handle older DirectX 9.0b games at reduced settings, but any title pushing more than a few hundred thousand polygons per frame would hit the fill-rate ceiling. Without rivals, the benchmark analysis must lean on the percentile: a 50th-percentile rank with zero scores means the card is unranked in actual testing, so any performance claim is speculative. The safest interpretation is that it performs at a level consistent with its modest specs—neither a standout nor a complete failure.

Power and Cooling

No TDP figure is provided in the fact pack, and there is no suggested PSU wattage, no power connector requirement, and no slot width specification. The only power-related data point is the absence of any thermal design power value, which is typical for an older mobile part where OEMs integrated cooling solutions directly. Because the Mobility Radeon X300 is a mobile chip, it would have been soldered or mounted on MXM-style boards inside laptops, so discrete PSU recommendations are not applicable. The 110 nm process node and 107 million transistors suggest a modest power draw—likely within the range of what a standard laptop cooling fan could handle, but that is qualitative inference, not a number from the pack. For desktop systems using an adapter or a legacy board, the PCIe 1.0 x16 bus interface would provide up to 75 W from the slot, but no connector is listed, implying the card draws power solely from the bus. Cooling requirements are therefore minimal, but the lack of a TDP means no precise thermal envelope can be stated.

How It Compares

The `nearestRivals` field is empty, so there are no direct competitor names, scores, or deltaPct values to cite. The predecessor is listed as M1x, and the successor is M5x, but no specifications or performance figures are provided for either. Comparing against the M1x would require data not present in the fact pack; the same applies to the M5x. The only comparison available is the percentile rank: at 50, it sits exactly at the median of all GPUs in the database. That is a neutral position—not a competitive win, not a loss. Against hypothetical rivals from the same era, the 64-bit memory bus and 4.000 GB/s bandwidth would likely place it below any 128-bit part, but without named rivals, that remains an unverified assertion. The data shows no performance deltas to analyze, so the comparison is limited to architectural positioning: it is a low-end mobile chip with no modern features, and the empty rival list confirms it is not a benchmark contender.

Who Should Consider It

Given the zero benchmark scores and the 50th-percentile rank, the Mobility Radeon X300 is only suitable for legacy systems running pre-2005 software. The 128 MB VRAM and 4.000 GB/s bandwidth are sufficient for 1024x768 resolution in DirectX 9.0b titles that do not exceed that memory footprint. At 1280x1024, the bandwidth wall becomes apparent—texture-heavy scenes will drop frame rates due to the 4.000 GB/s ceiling. The 1.400 GPixel/s fill rate means pixel-shader effects from early 2000s games are manageable, but anything with complex lighting or large particle systems will strain the 4 ROPs. Gamers seeking to play modern titles at any resolution should avoid this card; the API support stops at DirectX 9.0b and OpenGL 2.0, so no current game will run natively. For retro enthusiasts or system builders assembling a period-accurate machine, the X300 can handle casual 2D applications and very old 3D games, but the lack of any benchmark data means actual frame rates are unknown. The 50th percentile rank suggests it is an average performer among all GPUs, but that average is dragged down by the absence of modern GPU scores—this is a part that has never been tested in this database.

FAQ

Q: What is the memory bandwidth of the ATI Mobility Radeon X300?

A: The memory bandwidth is 4.000 GB/s, derived from a 64-bit bus and 250 MHz DDR memory (500 Mbps effective).

Q: Does the Mobility Radeon X300 support ray tracing?

A: No. The chip has no ray tracing cores or tensor cores, and the API list includes only DirectX 9.0b and OpenGL 2.0, with no Vulkan support.

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

A: The pixel rate is 1.400 GPixel/s, which matches the texture rate of 1.400 GTexel/s, based on 4 ROPs and 4 TMUs.

Q: Is this card suitable for modern gaming?

A: No. The 128 MB VRAM, 4.000 GB/s bandwidth, and DirectX 9.0b API limit it to very old titles; no modern game will run natively.

Q: What is the manufacturing process of the Mobility Radeon X300?

A: It is fabricated on a 110 nm process at TSMC, with 107 million transistors on a 74 mm² die.

Q: What is the bus interface for this card?

A: It uses PCIe 1.0 x16, which is the only listed connection interface.