ATI Radeon HD 5450

Launched in February 2010 on TSMC's 40 nm process, the ATI Radeon HD 5450 is an end-of-life, single-slot graphics card built on the TeraScale 2 architecture with the Cedar chip. The data positions this card firmly in the entry-level segment of its era, with a benchmark score that places it in the bottom 1st percentile of all GPUs tested, yet its specifications reveal a design focused on low power draw and basic multimedia output rather than raw compute capability.

Memory Subsystem

The HD 5450 is equipped with 512 MB of DDR2 memory, which is a modest allocation even for its 2010 launch period. The memory operates at an effective speed of 800 Mbps across a 64-bit bus interface, resulting in a total bandwidth of 6.400 GB/s. This is a constrained memory pipeline by any modern standard; the 64-bit bus width is half that of many contemporaneous mid-range cards, and the DDR2 type lacks the density and efficiency of GDDR3 or GDDR5. For high resolutions, this configuration is a significant bottleneck. The pixel rate of 2.600 GPixel/s and texture rate of 5.200 GTexel/s suggest that the card can handle basic desktop composition and light 2D workloads, but driving a 1080p or higher resolution in a 3D game would saturate the memory bus quickly. The 6.400 GB/s bandwidth is sufficient for framebuffer operations at low resolutions, but benchmark data indicates the card's overall compute score of 389 in Geekbench OpenCL is a reflection of these tight memory constraints. In practice, the 512 MB VRAM limits texture detail and resolution scaling, and users should expect to lower settings drastically or rely on the card solely for video output rather than gaming.

Power and Cooling

With a TDP of just 19 W, the HD 5450 is one of the most power-efficient discrete GPUs documented in this database. This low thermal envelope requires no auxiliary power connectors, as the card draws all its power from the PCIe 2.0 x16 slot. The suggested PSU rating is 200 W, which is a minimal requirement that allows integration into pre-built office PCs or small form factor systems with weak power supplies. The single-slot cooler is a passive or low-profile active design, consistent with the 19 W thermal load; no number beyond the TDP is provided, but the implication is that heat dissipation is trivial. The card's length of 170 mm (6.7 inches) also makes it compatible with most compact cases. For a user building a low-power HTPC or a legacy workstation, the 19 W figure means no PSU upgrade is necessary, and the lack of power connectors simplifies installation. However, the flip side is that this power budget severely limits performance headroom, as the 104.0 GFLOPS FP32 compute rate is a direct consequence of the 80 shading units running under such a restrictive power cap.

Benchmark Performance

The Geekbench OpenCL score of 389 places the HD 5450 in the 1st percentile of all GPUs, which is a clear indication of its status as a basic display adapter rather than a compute device. The nearest rival data provides a nuanced picture: the ATI Radeon HD 5750 scores 387, which is a mere 0.5% lower, while the HD 5450 is 19% faster than the AMD Radeon HD 6630M. This is a curious inversion, as the HD 6630M is a mobile part with an average score of 327, suggesting that the desktop HD 5450's fixed clocks and dedicated memory outperform a laptop chip that should theoretically be newer. Conversely, the Intel HD Graphics 4000 integrated solution scores 414, which is 5.9% higher than the HD 5450, and the AMD Radeon HD 7750 scores 430, a 9.6% advantage. These deltas indicate that the HD 5450 sits at the bottom of the discrete GPU hierarchy, barely edging out a very old rival (HD 5750) but losing to modern integrated graphics from Intel and a higher-tier AMD card. The 0.5% margin over the HD 5750 is statistically negligible, suggesting that both cards are equally matched in OpenCL workloads, but the 5.9% deficit to Intel HD 4000 is more meaningful; it shows that by the time Intel's integrated graphics matured, the HD 5450 offered no computational advantage over a CPU's built-in solution. In practical terms, the 104.0 GFLOPS FP32 throughput is enough for video playback acceleration but fails to deliver playable frame rates in any demanding 3D application.

Who Should Consider It

Given the 1st percentile ranking and the 389 average benchmark score, the HD 5450 is not suitable for modern gaming at any resolution. At 720p, the card might handle 2D titles or very old games from the pre-2008 era, but the 512 MB VRAM and 6.400 GB/s bandwidth will cause texture thrashing even at low settings. For 1080p, the card is effectively unusable for 3D workloads; the data suggests that integrated graphics from Intel (HD 4000, scoring 414) outperform it by 5.9%, making the discrete card redundant for any system with a modern CPU. The realistic use case is a basic office PC or a media center requiring HDMI 1.3a output (with 1x DVI, 1x HDMI, and 1x VGA ports) where no gaming is intended. The 19 W TDP and 200 W PSU requirement make it an easy drop-in upgrade for a legacy system that needs a dedicated video output without taxing a weak power supply. Users with a Geekbench score of 389 should not expect any compute acceleration for OpenCL applications; the HD 5750, which is 0.5% slower, is an equally poor choice, while the HD 7750 at 9.6% faster offers a marginal improvement but still falls below the threshold for enjoyable gaming. In short, this card is for display output only, not for performance workloads.

Ray Tracing and Feature Set

The HD 5450 has no ray tracing cores and no tensor cores, as these are modern features absent from the TeraScale 2 architecture. The card supports DirectX 11.2 (11_0) and OpenGL 4.4, but it does not support Vulkan, which limits its compatibility with many contemporary game engines that rely on Vulkan for cross-platform rendering. The 80 shading units and 8 texture mapping units provide the baseline for the 104.0 GFLOPS FP32 rate, but there is no dedicated hardware for real-time ray tracing or AI-based upscaling. The feature set is purely rasterization-based, and even that is limited by the 4 ROPs, which cap the pixel fill rate at 2.600 GPixel/s. For users seeking ray tracing effects, this card is categorically incapable; the lack of tensor cores also precludes any Deep Learning Super Sampling (DLSS) features. The API support for DirectX 11.2 means that some early DirectX 11 games can run, but the hardware's computational limits will force minimum settings and low resolutions. The HDMI 1.3a output supports 1080p video playback, but not 4K, and the VGA output is useful for older monitors. Overall, the feature set is a relic of its 2010 release date, focused on basic multimedia and office productivity, with no path for modern graphics features.