ATI Radeon X850 XT

The ATI Radeon X850 XT is a legacy graphics card built on the R480 chip under the R400 architecture, fabricated by TSMC on a 130 nm process. It integrates 160 million transistors across a 297 mm² die, yielding a transistor density of 538.7K per mm². Released on November 30, 2004, and now marked as end-of-life, this card occupies the 50th percentile of all GPUs in the database, with an average benchmark score of zero and no listed nearest rivals. The launch MSRP was 499 USD. It connects via PCIe 1.0 x16 and features a dual-slot cooling solution. The card's memory subsystem is built around 256 MB of GDDR3, and its rendering pipeline includes 16 texture mapping units and 16 render output units. With a pixel rate of 8.320 GPixel/s and a texture rate of 8.320 GTexel/s, the card is positioned for a specific era of software. The absence of dedicated ray tracing and tensor cores, coupled with DirectX 9.0b (9_2) and OpenGL 2.1 support, defines its feature set. The card's power requirements are modest, with a 69 W TDP and a suggested PSU of 250 W. The 1x 6-pin power connector is the sole input, and the dual-slot design is a physical characteristic that affects case compatibility.

Who Should Consider It

The X850 XT targets users building or maintaining a system around the PCIe 1.0 x16 interface, given its bus interface. With a 256-bit memory bus and 34.56 GB/s of bandwidth, the card is positioned for standard-resolution gaming rather than extreme multi-monitor setups. The 50th percentile ranking places it exactly at the median of the database's GPU population, indicating a mid-range standing. However, the average benchmark score of zero means the database lacks quantitative performance data for this card, so recommendations must be inferred from its architectural specifications. The 16 TMUs and 16 ROPs, combined with a pixel rate of 8.320 GPixel/s and a texture rate of 8.320 GTexel/s, suggest a card capable of handling DirectX 9-era titles at moderate settings. The 256 MB frame buffer is a limiting factor for high resolutions; users seeking to run modern games at high detail will likely encounter memory capacity constraints. Conversely, for retro builds or systems running older software, the X850 XT provides a coherent feature set. The DirectX 9.0b (9_2) API support defines the rendering capabilities, so users should stick to titles that align with that API level. The absence of Vulkan support further restricts its use to legacy applications. Given the end-of-life production status, this card is best suited for collectors or those maintaining period-correct hardware, not for current-generation workloads. The 130 nm process node and 160 million transistor count indicate a design from an era when power efficiency was less of a focus, but the 69 W TDP remains modest. For users with a 250 W PSU, the card is a drop-in option, provided a 6-pin connector is available. The dual-slot design means it will occupy two slots, which may be a consideration for compact cases. The 50th percentile ranking suggests that, in the absence of benchmark data, the card sits in the middle of the database's performance spectrum, but this is a global position rather than a direct comparison. The display outputs include 1x DVI, 1x VGA, and 1x S-Video, which cater to older monitors and TVs.

Memory Subsystem

The memory subsystem consists of 256 MB of GDDR3 memory connected via a 256-bit bus, running at 540 MHz with an effective data rate of 1080 Mbps. This configuration yields a total bandwidth of 34.56 GB/s. For high resolutions, the 256 MB capacity is the primary bottleneck; modern textures and high-resolution frame buffers can exceed this amount quickly, leading to potential stuttering or texture thrashing. The 256-bit bus width is a positive attribute, providing a wide path for data movement, but the modest 34.56 GB/s bandwidth limits the rate at which textures and geometry can be streamed. The memory clock of 540 MHz (1080 Mbps effective) is a fixed figure; there is no boost or game clock listed for the memory. In practical terms, the memory subsystem is adequate for the DirectX 9.0b (9_2) era it was designed for, but it will struggle with higher resolution workloads that demand larger frame buffers and higher bandwidth. The pixel rate of 8.320 GPixel/s and texture rate of 8.320 GTexel/s are matched, suggesting a balanced design between fill-rate and memory throughput. However, the 34.56 GB/s figure is a hard ceiling; any workload that exceeds this will see performance degradation. For users considering high-resolution gaming, the data suggests the 256 MB frame buffer will be the limiting factor rather than the bus width. The 256-bit bus is a wide interface, but the 34.56 GB/s bandwidth is a product of the 540 MHz clock and the bus width. The effective data rate of 1080 Mbps is double the clock, which is typical for GDDR3. The memory type is GDDR3, which was a standard for the era. The 256 MB capacity is the most significant constraint, as it limits the amount of texture data and geometry that can be stored on-chip. For a card in the 50th percentile, this memory configuration is consistent with a mid-range product. The bandwidth of 34.56 GB/s is sufficient for standard resolutions, but higher resolutions will exceed the available bandwidth and capacity.

Ray Tracing and Feature Set

The X850 XT has no dedicated ray tracing cores and no tensor cores, as indicated by the null values in the specification. This means hardware-accelerated ray tracing is entirely absent from the feature set. The card's rendering capabilities are defined by its API support: DirectX 9.0b (9_2) and OpenGL 2.1. Vulkan is not supported, which further confines the card to legacy software environments. The DirectX 9.0b (9_2) API level dictates the rendering pipeline features available to developers. Without tensor cores, any machine-learning or AI-accelerated features are also unavailable. The feature set is therefore purely rasterization-based, relying on the 16 TMUs and 16 ROPs to execute traditional graphics workloads. The absence of RT cores means any ray-traced effects would have to be computed on the general-purpose shader units, which would be prohibitively slow given the 8.320 GPixel/s pixel rate. The OpenGL 2.1 support provides a secondary API path for applications that use it, but it does not extend the feature set beyond the DirectX 9.0b baseline. For users evaluating modern games that require DirectX 11 or later, the X850 XT is not compatible. The feature set is firmly rooted in the early 2000s, and the data shows no support for contemporary graphics APIs. This makes the card suitable only for software that targets DirectX 9.0b or OpenGL 2.1. The lack of Vulkan support is particularly notable, as it eliminates any possibility of using modern translation layers. The 16 TMUs and 16 ROPs are the core execution units, and their rates of 8.320 GTexel/s and 8.320 GPixel/s respectively define the maximum fill-rate. These figures are modest by today's standards but were appropriate for the DirectX 9.0b era. The absence of tensor cores also means no support for AI-based upscaling techniques, which are common in modern GPUs.

How It Compares

The nearestRivals field in the database is empty, meaning there are no direct comparative benchmark scores or delta percentages available for the X850 XT. Consequently, a quantitative comparison against specific competing cards cannot be made from the provided data. The only positional metric is the percentile against all GPUs, which is 50. This places the card at the exact median of the database's entire GPU population. However, the average benchmark score is zero, indicating that the database has no recorded performance measurements for this card. The lack of rival data prevents any statements about relative performance, such as being ahead of or behind a specific model. The card's predecessor is the Radeon R300 and its successor is the Radeon R500 PCIe, but no benchmark scores for these are supplied. Therefore, no deltaPct values can be cited. The 50th percentile is a global ranking, not a comparison to a specific rival. Given the empty rival list, the X850 XT's position must be inferred from its architectural specs—such as the 16 TMUs, 16 ROPs, and 34.56 GB/s bandwidth—rather than from direct head-to-head data. In summary, the database provides no rival comparisons for this card, and any claims of superiority or inferiority to other GPUs would be unsupported by the facts. The 50th percentile does offer a general sense of standing, but it is not a substitute for specific delta measurements. The absence of benchmark scores means that even the 50th percentile is a static ranking, not a dynamic performance metric. The card's release date of November 30, 2004, places it in a specific historical context, but without rival data, its performance relative to contemporaries cannot be quantified. The database's empty nearestRivals array is a clear indicator that this card lacks comparative data, so users should treat any performance expectations as speculative. The end-of-life production status further complicates any comparison, as the card is no longer manufactured.

Power and Cooling

The X850 XT has a thermal design power (TDP) of 69 W. This is a relatively modest power draw, and the suggested power supply unit (PSU) rating is 250 W. The card requires a single 6-pin power connector, as specified in the power connectors field. The cooling solution is a dual-slot design, indicating that the card occupies two expansion slots in a chassis. The dual-slot form factor allows for a larger heatsink and fan assembly, which is appropriate for the 69 W TDP. The 250 W PSU recommendation suggests that a standard mid-range power supply is sufficient, though users should ensure their PSU has the necessary 6-pin connector. The 1x 6-pin connector is the sole power input; there are no additional connectors listed. The 69 W TDP is low enough that a dual-slot cooler can dissipate the heat effectively without excessive noise, though specific noise levels are not provided. The card's dimensions are not listed, so physical clearance requirements beyond the dual-slot width cannot be assessed. The power connector configuration is straightforward, making installation into a compatible system a simple matter of connecting the 6-pin cable. The 250 W PSU figure is a recommendation, not an absolute requirement, but it serves as a guideline for system builders. The 69 W TDP is a key specification for power supply selection, and the 250 W suggested PSU provides a comfortable margin for the card alone. The dual-slot cooler is a physical constraint; users with small form factor cases may need to verify clearance. The 6-pin connector is a standard interface, so compatibility with most PSUs is likely. The card's process node of 130 nm and transistor count of 160 million contribute to its power characteristics, but the 69 W TDP is the primary figure for thermal management. Overall, the power and cooling specifications are modest and should integrate easily into most systems from the era.