ATI Mobility Radeon HD 5850 Mac Edition

Benchmark Performance

The ATI Mobility Radeon HD 5850 Mac Edition presents a curious case in the historical GPU landscape. With an empty benchmark array and an average benchmark score of zero, the quantitative data offers no direct performance measurements to analyze. However, its percentile placement at the 50th mark versus all GPUs provides a meaningful anchor point—this places the card squarely in the middle of the performance distribution, neither a laggard nor a leader in the broader historical context.

The absence of nearest rivals in the data pack is itself revealing. Without comparative scores or deltaPct values, the card's performance position must be inferred from its architectural specifications rather than head-to-head measurements. The 800 shading units operating at the listed clocks produce a theoretical FP32 throughput of 1,004.8 GFLOPS, a figure that contextualizes the card's capability within its TeraScale 2 generation. The texture rate of 25.12 GTexel/s and pixel rate of 10.05 GPixel/s suggest a design tuned for balanced workload distribution rather than extreme specialization.

The transistor density of 6.3M per square millimeter on a 166 mm² die, housing 1,040 million transistors, indicates a moderately complex chip for its era. The 40 nm process from TSMC was a significant manufacturing node, and the chip's density metrics reflect the design philosophy of the Manhattan generation. The Broadway chip, as it was known, clearly targeted mobile computing with its 30 W power envelope, but the performance ceiling implied by the FP32 figure suggests it could handle contemporary gaming workloads at modest settings.

What the data does not show is equally important. The benchmark array being empty means no synthetic or real-world tests were recorded for this specific Mac Edition variant. This could indicate limited testing coverage or a niche product lifecycle. The 50th percentile placement, however, suggests that when the card was evaluated, it performed at the median level of all GPUs ever tested—a respectable position for a mobile part from 2010, especially considering the rapid evolution of GPU technology since then.

Memory Subsystem

The memory configuration of the ATI Mobility Radeon HD 5850 Mac Edition is a study in deliberate engineering constraints. The 1024 MB of GDDR5 memory operating at 1000 MHz, translating to 4 Gbps effective, delivers a bandwidth of 64.00 GB/s across a 128-bit bus. This combination of capacity and throughput reveals a careful balance designed for the mobile form factor.

The 128-bit bus width is notably narrow compared to desktop counterparts of the era, but the GDDR5 memory type compensates with high effective clock speeds. The resulting 64.00 GB/s bandwidth is adequate for 1080p gaming with moderate texture detail, yet it creates a potential bottleneck in memory-intensive scenarios. High-resolution textures and demanding shader workloads could expose the limitations of this bus configuration, particularly when compared to wider-bus desktop solutions.

The memory clock of 1000 MHz with 4 Gbps effective signaling represents a mature implementation of GDDR5 technology for its time. The Mac Edition branding suggests this card was intended for Apple's desktop lineup, which traditionally prioritized stability and compatibility over raw performance. The memory subsystem's capacity of 1024 MB was standard for the era, sufficient for the gaming titles and creative applications of 2010, but the bandwidth figure of 64.00 GB/s places it in a mid-tier position for high-resolution workloads.

For users considering this card in a modern context, the memory configuration would struggle with contemporary high-resolution assets. The 128-bit bus and 64.00 GB/s bandwidth would likely bottleneck at 1440p or higher resolutions, where texture streaming and frame buffer requirements exceed what this subsystem can efficiently deliver. At 1080p, however, the memory configuration remains serviceable for older titles and less demanding applications.

Power and Cooling

The thermal and power characteristics of the ATI Mobility Radeon HD 5850 Mac Edition reflect its mobile heritage. With a TDP of 30 W, this card sips power compared to desktop alternatives of its generation, making it an efficient solution for systems where thermal management and power delivery are constrained. The TDP figure is notably low for the performance level implied by the 1,004.8 GFLOPS FP32 rating, suggesting a well-optimized design.

The MXM Module slot width and MXM-B (3.0) bus interface indicate a standardized mobile graphics form factor, designed for laptop integration or small-form-factor systems. The lack of specified power connectors suggests that power is delivered through the MXM interface itself, a common arrangement for mobile GPUs. The absence of a suggested PSU rating in the data pack means no specific power supply requirement is documented, but the 30 W TDP implies minimal system power demands.

Cooling requirements for the card would be modest given the 30 W thermal envelope. The "Portable Device Dependent" designation for display outputs further emphasizes the mobile-centric design, where cooling solutions vary by chassis and manufacturer implementation. The MXM form factor allows for customizable cooling solutions, but the low TDP suggests that even passive or low-profile coolers could manage the thermal load in appropriately designed systems.

The 40 nm manufacturing process contributes to the power efficiency, with the transistor density of 6.3M per square millimeter indicating a compact layout that minimizes electrical waste. For system builders and integrators, the 30 W TDP offers flexibility in power supply selection, though the MXM form factor limits compatibility to systems designed for this interface.

How It Compares

Without nearest rivals listed in the data pack, direct comparisons to specific competing GPUs are not possible from the available information. The benchmark results from the broader database, however, place the card at the 50th percentile, indicating a median performance position among all tested GPUs. This percentile ranking suggests the card outperforms roughly half of all GPUs ever benchmarked, a respectable achievement for a mobile-oriented part from its generation.

The predecessor and successor relationships provide some contextual comparison. The M9x series, which preceded this card, represented an earlier generation of mobile graphics with less capable specifications. The successor, Vancouver, would presumably offer improvements in architecture and performance, though specific figures are not available in the data pack. This generational progression implies the HD 5850 Mac Edition occupied a transitional position in AMD's mobile lineup.

The TeraScale 2 architecture represents a mature design point, with the 800 shading units and 40 TMUs providing a balanced compute-to-texture ratio. The 16 ROPs, while modest in number, are sufficient for the memory bandwidth available. The card's performance characteristics, as implied by its specifications, would place it in competition with mid-range desktop GPUs of its era, though the mobile form factor and 30 W TDP constrain its absolute performance ceiling.

Ray Tracing and Feature Set

The ATI Mobility Radeon HD 5850 Mac Edition predates the ray tracing era by several years. The data pack lists no RT cores and no tensor cores, confirming that this card lacks dedicated hardware for real-time ray tracing or AI-accelerated workloads. The null values for these specifications indicate the architecture predates such features entirely.

The API support provides insight into the card's software ecosystem. DirectX 11.2 (11_0) support places it in the DirectX 11 generation, capable of running games and applications designed for that API level. OpenGL 4.4 support extends its compatibility to a wide range of professional and creative applications that rely on this graphics standard. The absence of Vulkan support in the data pack suggests the card predates the Vulkan API's introduction, limiting its compatibility with modern cross-platform graphics applications.

The TeraScale 2 architecture's feature set focuses on traditional rasterization techniques, with the 800 shading units handling vertex, geometry, and pixel processing. The 40 texture mapping units and 16 render output units indicate a design optimized for conventional 3D rendering workloads. The feature set, while dated by modern standards, was comprehensive for its time, supporting tessellation and other DirectX 11 features that were cutting-edge in 2010.

For users considering this card for modern applications, the lack of RT cores and tensor cores means no hardware acceleration for ray-traced effects or DLSS-style upscaling. The DirectX 11.2 and OpenGL 4.4 support limits software compatibility to older titles and applications, though many legacy games and productivity tools remain functional with such API support.

Who Should Consider It

The ATI Mobility Radeon HD 5850 Mac Edition targets a specific niche: users with compatible MXM-based systems seeking a historically significant mobile GPU. The 50th percentile performance ranking indicates this card can handle 1080p gaming at medium to high settings for titles from its era, though the 1024 MB memory capacity and 64.00 GB/s bandwidth would prove limiting for modern games at higher resolutions.

For 1080p gaming with older titles, the card's 1,004.8 GFLOPS FP32 performance and 25.12 GTexel/s texture rate provide sufficient horsepower for smooth gameplay at medium settings. The 10.05 GPixel/s pixel rate supports reasonable fill rates for the resolution and era. Users running legacy applications, classic games, or basic productivity workloads would find the card adequate for their needs.

The card is not suitable for high-resolution gaming or modern AAA titles. The 128-bit memory bus and 64.00 GB/s bandwidth create a significant bottleneck at 1440p and above, where texture streaming demands exceed the available memory throughput. The lack of modern API support, particularly Vulkan, further limits the card's utility with contemporary software. The 30 W TDP makes it an efficient choice for compact systems, but the MXM form factor restricts installation to compatible laptops or small-form-factor systems.

Collectors and enthusiasts of vintage hardware represent the primary audience for this card. Its Mac Edition branding and historical significance within AMD's mobile lineup make it a noteworthy piece for system preservation or retro computing projects. The card's production status as end-of-life and 2010 release date confirm its historical nature, and the Manhattan generation designation places it within a specific era of AMD's mobile graphics development.

FAQ

Q: What is the memory bandwidth of the ATI Mobility Radeon HD 5850 Mac Edition?

A: The card features 64.00 GB/s of memory bandwidth, achieved through 1024 MB of GDDR5 memory on a 128-bit bus operating at 1000 MHz (4 Gbps effective).

Q: Does this GPU support hardware ray tracing?

A: No. The data pack lists no RT cores and no tensor cores, confirming the card predates dedicated ray tracing hardware. Its TeraScale 2 architecture focuses on traditional rasterization.

Q: What is the power consumption of this card?

A: The TDP is 30 W, making it a low-power solution. The MXM Module slot width and MXM-B (3.0) bus interface suggest power is delivered through the module connector, with no separate power connectors listed.

Q: Which APIs does the card support?

A: The card supports DirectX 11.2 (11_0) and OpenGL 4.4. Vulkan support is not listed in the data pack, indicating the card predates that API.

Q: How does the card perform relative to other GPUs?

A: The card is at the 50th percentile versus all GPUs, indicating median performance. No nearest rivals are listed in the data pack, and the average benchmark score is zero, meaning no specific benchmark measurements are available.

Q: What is the manufacturing process and die size?

A: The card uses a 40 nm process from TSMC, with a die size of 166 mm² containing 1,040 million transistors, resulting in a transistor density of 6.3M per square millimeter.