ATI Radeon HD 5870 Mac Edition

How It Compares

The ATI Radeon HD 5870 Mac Edition occupies a unique position in the benchmark database, with its percentile rank of 50 placing it exactly at the median of all tracked GPUs. This is a remarkable standing for a card released in mid-2010, suggesting that its compute capabilities have aged with surprising grace relative to the broader field of graphics processors.

The data shows no nearest rivals are listed for this card, which is itself telling. The absence of direct competitors in the database reflects its specialized nature as a Mac Edition variant — a card designed for a specific ecosystem rather than the general Windows gaming market. Without rival scores to compare against, the HD 5870 Mac Edition stands as a singular data point, its performance defined more by its own architectural merits than by head-to-head competition.

Its position at the 50th percentile means that half of all GPUs in the database outperform it, while half fall below. For a card built on the 40 nm process with 2,154 million transistors on a 334 mm² die, this is a testament to the efficiency of the TeraScale 2 architecture. The transistor density of 6.4 million per square millimeter is modest by today's standards, yet the card still holds its ground in the middle of the pack.

Ray Tracing and Feature Set

The HD 5870 Mac Edition does not include dedicated ray tracing cores, nor does it feature tensor cores — both are absent from the specification data. This places it firmly in the pre-ray-tracing era of GPU design, where rendering techniques relied on traditional rasterization and compute shaders rather than hardware-accelerated ray traversal.

The API support tells a more nuanced story. The card supports DirectX 11.2 (with the 11_0 feature level) and OpenGL 4.4, but has no Vulkan support listed. This means the card can run modern DirectX 11 titles and OpenGL applications, but it cannot leverage the lower-level hardware control that Vulkan provides. For Mac users, the OpenGL 4.4 support is particularly relevant, as it enables compatibility with a wide range of professional and creative applications that rely on OpenGL rendering pipelines.

The absence of Vulkan and ray tracing capabilities limits the card's utility in cutting-edge gaming scenarios. However, the presence of 1,600 shading units, 80 texture mapping units, and 32 ROPs provides substantial raw compute throughput for the era. The card's 2.720 TFLOPS of FP32 performance is a significant figure, enabling complex shader workloads and compute-based effects in supported titles.

Power and Cooling

The HD 5870 Mac Edition carries a thermal design power of 228 W, which is substantial for a card of its generation. This power draw requires careful attention to system cooling and power delivery. The card uses a dual-slot cooling solution, which means it occupies two expansion slots in the chassis — a common design for high-performance cards of this era that need larger heatsinks to dissipate heat effectively.

Power delivery requires two 6-pin PCIe power connectors, and the suggested power supply unit rating is 550 W. This is a critical specification for system builders, as insufficient PSU capacity can lead to system instability or component damage under load. The dual 6-pin configuration is standard for high-end cards of the 2010 era, providing adequate current for the GPU's 228 W TDP while leaving headroom for the rest of the system.

The physical dimensions are notable: the card measures 280 mm in length (11 inches), 111 mm in height (4.4 inches), and 37 mm in width (1.5 inches). The length is particularly important for case compatibility — smaller form factor cases may struggle to accommodate this card, and users should verify their chassis clearance before installation.

FAQ

Q: What is the release date of the ATI Radeon HD 5870 Mac Edition?

A: The card was released on June 29, 2010, making it a product of the Evergreen generation (HD 5800 series).

Q: What is the launch MSRP of this card?

A: The launch MSRP is 479 USD.

Q: What memory configuration does the HD 5870 Mac Edition use?

A: It has 1024 MB of GDDR5 memory on a 256-bit bus, providing 153.0 GB/s of memory bandwidth.

Q: What display outputs are available on this card?

A: The card provides one DVI port and two mini-DisplayPort 1.1 outputs.

Q: Is this card still in production?

A: No, the production status is listed as end-of-life. Its predecessor is the Radeon R700 series, and its successor is the Northern Islands generation.

Q: What is the memory clock speed of this card?

A: The memory runs at 1195 MHz, which translates to 4.8 Gbps effective data rate.

Benchmark Performance

Without direct benchmark scores or nearest rival data, the performance analysis must rely on the card's architectural specifications and its 50th percentile ranking. The 2.720 TFLOPS of FP32 compute power, combined with a pixel rate of 27.20 GPixel/s and a texture rate of 68.00 GTexel/s, indicates a card capable of handling 1080p gaming at high settings in titles from its era.

The shading unit count of 1,600 is substantial, providing ample parallel processing capability for complex pixel shaders and compute workloads. The 80 TMUs and 32 ROPs represent a balanced configuration — not overly skewed toward texture throughput or pixel fill rate, but rather a well-rounded design that can handle a variety of rendering scenarios.

The memory bandwidth of 153.0 GB/s, derived from the 256-bit bus and GDDR5 memory at 4.8 Gbps effective, is sufficient for the card's compute capabilities. This bandwidth-to-compute ratio suggests the card is not memory-bandwidth-limited in most workloads, allowing the shading units to operate at near-peak efficiency. The 50th percentile ranking confirms that this balance remains competitive against half of all GPUs in the database, despite the card's age.

Who Should Consider It

The HD 5870 Mac Edition's 50th percentile ranking suggests it remains viable for 1080p gaming at medium to high settings in DirectX 11 titles. The card's 2.720 TFLOPS of FP32 performance and 27.20 GPixel/s pixel rate are sufficient for maintaining playable frame rates in most games released during its active lifespan, though newer titles with more demanding rendering techniques may require reduced settings.

For users running macOS applications that leverage OpenGL 4.4, this card offers a capable compute platform. The 1,600 shading units provide substantial parallel processing power for creative workloads such as video editing, 3D modeling, and image processing. The dual mini-DisplayPort 1.1 outputs enable multi-monitor setups, which is valuable for productivity workflows that benefit from expanded desktop real estate.

The card is not suitable for 4K gaming or ray-traced workloads, as it lacks the hardware acceleration for these features and its 1024 MB VRAM would become a bottleneck at higher resolutions. However, for users with 1080p displays and a preference for the Mac ecosystem, the HD 5870 Mac Edition represents a functional, if aging, solution. The 228 W TDP and 550 W PSU requirement mean it is best suited for desktop systems with adequate power headroom and case clearance for its 280 mm length.

Memory Subsystem

The memory subsystem of the HD 5870 Mac Edition is defined by its 1024 MB of GDDR5 VRAM, arranged on a 256-bit bus with a bandwidth of 153.0 GB/s. The memory clock operates at 1195 MHz, which translates to an effective data rate of 4.8 Gbps through DDR (double data rate) signaling.

The 256-bit bus width is a crucial specification — it determines how much data can be transferred between the GPU and memory in a single clock cycle. A wider bus allows for higher bandwidth, and 256 bits was a standard configuration for high-end cards of this era. The resulting 153.0 GB/s bandwidth is well-matched to the card's compute capabilities, ensuring that the 1,600 shading units have sufficient data to process without stalling.

For high-resolution gaming, the 1024 MB VRAM capacity is the primary limitation. Modern games with high-resolution textures can easily exceed 1 GB of VRAM usage at 1440p or 4K resolutions, leading to texture thrashing and performance degradation. However, at 1080p with moderate texture settings, the memory capacity is adequate for most titles from the card's era. The GDDR5 memory type provides a significant bandwidth advantage over older DDR3 and DDR2 memory technologies, enabling faster data transfer for complex scenes and effects.

The memory subsystem's efficiency is reflected in the card's overall 50th percentile performance ranking. While the 1024 MB capacity is modest by modern standards, the 153.0 GB/s bandwidth ensures that the available memory is used effectively, contributing to the card's surprisingly competitive standing in the database.