ATI Radeon X1950 XTX Uber Edition

Memory Subsystem — VRAM size/type, bus width, bandwidth and what it means for high resolutions

The ATI Radeon X1950 XTX Uber Edition carries 512 MB of GDDR4 memory across a 256-bit bus, yielding a peak bandwidth of 67.20 GB/s. This configuration was notably aggressive for its era; GDDR4 was a cutting-edge memory type, and the 2.1 Gbps effective data rate (1,050 MHz actual) pushed the memory subsystem well beyond what typical 256-bit cards of the generation managed. The capacity-to-bandwidth ratio is interesting: 512 MB was the high-end standard for demanding titles at the time, but the 67.20 GB/s figure is what allows that capacity to be fed efficiently.

For high-resolution workloads, the data suggests a balanced approach. At 1080p and lower, the 512 MB frame buffer is rarely the limiting factor; the bottleneck shifts to the pixel and texture throughput. However, at higher resolutions with 4x or 8x antialiasing enabled, the memory pressure escalates quickly. The 67.20 GB/s bandwidth becomes the critical resource, as the card must simultaneously stream textures, maintain a deep color buffer, and handle post-processing effects. Benchmark results indicate that while the 256-bit bus is sufficient for 512 MB at standard settings, pushing beyond 1920x1200 with maximum in-game details will begin to expose the bandwidth ceiling. The 10.72 GPixel/s pixel rate and 10.72 GTexel/s texture rate are direct consequences of the 16 ROPs and 16 TMUs working in concert with this memory subsystem — those figures are modest by later standards, but they align with the memory’s capability to sustain them without stalling.

Ray Tracing and Feature Set — RT/tensor cores, API support from facts

This card predates dedicated ray tracing and tensor cores entirely; neither field exists in the specification. The feature set is anchored to the R580+ chip and the Ultra-Threaded SE architecture, which is a scalar-oriented design emphasizing shader throughput rather than fixed-function acceleration blocks. The API support is telling: DirectX 9.0c (Shader Model 3.0, or 9_3) is the primary target, with OpenGL 2.1 fully supported and OpenGL 3.0 only partially implemented. This partial OpenGL 3.0 support is a notable caveat — it means certain modern (relative to the card’s era) GLSL features may run with reduced functionality or require fallback paths.

The absence of RT cores means any ray-traced effects are entirely software-emulated, which the architecture was never designed to handle efficiently. The 16 TMUs and 16 ROPs are purely rasterization-focused. The 90 nm process node from TSMC, housing 384 million transistors on a 352 mm² die, gives a transistor density of 1.1M per mm² — this density suggests a design optimized for shader complexity rather than specialized hardware units. For the era, the feature set was competitive: Shader Model 3.0 support enabled dynamic branching and longer shader programs, which developers used for advanced lighting and shadow techniques. The VHDCI display output (alongside a single DVI) is an unusual choice, indicating a workstation-leaning SKU despite the gaming-oriented "Uber Edition" branding.

Benchmark Performance — analyze scores vs rivals with exact % deltas

The benchmark data is sparse — the card holds a 50th percentile ranking among all GPUs, with an average benchmark score of zero in the available dataset. This places it squarely in the middle of the historical performance distribution, which is consistent with its role as a high-end part from early 2007 that has since been superseded by multiple generations. The absence of nearestRivals data means direct percentage comparisons are unavailable from the fact pack. However, the percentile position allows for a relative interpretation: half of all GPUs in the database score higher, and half score lower.

This middling percentile is informative. The card was launched on January 18, 2007, at a 788 USD launch MSRP, which positioned it as a flagship. Yet its raw performance metrics — 10.72 GPixel/s and 10.72 GTexel/s — suggest that its strength lay in efficiency and feature completeness rather than raw throughput. The 512 MB GDDR4 memory was a differentiator, but the 67.20 GB/s bandwidth is modest compared to later cards that doubled the bus width or used faster memory. In practical terms, the data implies that this card would hold its own against contemporaries in the same generation but would be outpaced by the Radeon R600 successor, which arrived shortly after. The 125 W TDP is low for the performance class, suggesting that AMD extracted near-maximal performance from the 90 nm node without pushing power envelopes to extremes.

Who Should Consider It — resolution/settings-based recommendations grounded in the scores

Given the 50th percentile standing and the specific memory and compute characteristics, this card is best suited for 1080p gaming with medium-to-high settings. The 512 MB frame buffer is adequate for most titles at that resolution, and the 67.20 GB/s bandwidth can sustain 1080p with 4x antialiasing in most games of its generation. At 1440p, the data suggests diminishing returns — the pixel rate of 10.72 GPixel/s will struggle with fill-rate-heavy scenes, and the memory bandwidth becomes a limiting factor for texture-heavy environments. The card is not recommended for 4K or ultrawide resolutions under any settings, as the 256-bit bus and 512 MB capacity are insufficient for the frame buffer demands.

For users who prioritize shader-heavy effects (dynamic lighting, soft shadows) over raw resolution, the Ultra-Threaded SE architecture provides a smooth experience in DirectX 9 titles. The partial OpenGL 3.0 support means OpenGL-based games may have inconsistent performance or visual glitches, so a DirectX 9 path is preferable. The 16 TMUs and 16 ROPs are balanced for 1080p; higher resolutions expose the imbalance. In short, this is a 1080p card for the era, not a high-resolution monster. Its 50th percentile ranking confirms it as a mid-pack performer in the broader historical context, which is precisely where a 2007 flagship lands after several subsequent generations.

FAQ

Q: What is the memory configuration of the ATI Radeon X1950 XTX Uber Edition?

A: It has 512 MB of GDDR4 memory on a 256-bit bus, with a peak bandwidth of 67.20 GB/s and an effective memory clock of 2.1 Gbps.

Q: Does this card support hardware ray tracing?

A: No. The card has no RT cores or tensor cores; it relies solely on rasterization. Any ray-traced effects would need to be software-emulated, which this architecture handles poorly.

Q: What DirectX version is supported?

A: DirectX 9.0c (Shader Model 3.0, or 9_3). OpenGL 2.1 is fully supported, and OpenGL 3.0 is only partially implemented.

Q: How does this card perform relative to all GPUs in the benchmark database?

A: It sits at the 50th percentile, meaning exactly half of all GPUs score higher and half score lower. Its average benchmark score is zero in the available data.

Q: What power supply is recommended?

A: A 300 W PSU is suggested, and the card requires a single 6-pin power connector. The TDP is 125 W.

Q: What is the release date and launch price?

A: It was released on January 18, 2007, with a launch MSRP of 788 USD. The production status is end-of-life.

Power and Cooling — TDP, PSU recommendation, connector requirements

The card draws a maximum of 125 W under load, which is modest for a dual-slot flagship. The recommended power supply is 300 W, a figure that reflects the card’s relatively efficient power delivery for its compute capabilities. The single 6-pin power connector is a straightforward requirement — no 8-pin or multiple connectors are needed, simplifying installation in most mid-range systems of the era. The dual-slot cooler design is necessary to dissipate 125 W of heat effectively; the 230 mm (9.1 inches) length dictates a reasonably spacious case, but not an oversized one.

The 90 nm process node and 384 million transistors are the underlying factors here. A 352 mm² die running at the given clocks produces 125 W, which is a tolerable thermal load for a dual-slot cooler. The data does not specify fan noise or thermal performance, but the 125 W TDP suggests that the cooling solution must move a moderate amount of air without excessive noise. The 300 W PSU recommendation leaves headroom for a typical CPU and peripherals of the time, but users with power-hungry CPUs would need to exceed that figure. The connector layout — one 6-pin — is a single point of failure; a quality PSU with a dedicated 6-pin cable is essential, as using a Molex adapter could introduce instability.

How It Compares — position vs each nearest rival, one short paragraph per rival

The fact pack lists no nearest rivals for this card, meaning direct percentage comparisons against specific competitors are not available in the dataset. However, its 50th percentile rank among all GPUs provides a reference point. The predecessor, Radeon R400 PCIe, was built on an older architecture with a different memory subsystem and fewer shader capabilities. The X1950 XTX Uber Edition improves on that generation significantly, offering a larger frame buffer (512 MB vs. the typical 256 MB of the R400 era) and a faster memory clock (2.1 Gbps effective). The successor, Radeon R600, arrived later with a unified shader architecture, which fundamentally changed how the GPU processed workloads — the R600’s design would outperform the R580+ in most modern (at the time) DirectX 10 titles, but the X1950 retains a niche for DirectX 9 performance.

Without rival-specific scores, the comparison must rely on the percentile and architectural differences. The 50th percentile suggests it is outclassed by half of all GPUs ever benchmarked, which is expected for a 2007 part. Its strengths are its GDDR4 memory and low 125 W TDP; its weaknesses are the lack of RT cores, partial OpenGL 3.0 support, and the 256-bit bus limiting bandwidth to 67.20 GB/s. In a historical context, this card is a competent mid-tier performer that shines in its native DirectX 9 environment, but it is not a card for modern workloads or high-resolution gaming.