RADEON

AMD Radeon R9 M395X Mac Edition

AMD graphics card specifications and benchmark scores

4 GB
VRAM
MHz Boost
250W
TDP
256
Bus Width

AMD Radeon R9 M395X Mac Edition Specifications

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Radeon R9 M395X Mac Edition GPU Core

Shader units and compute resources

The AMD Radeon R9 M395X Mac Edition GPU core specifications define its raw processing power for graphics and compute workloads. Shading units (also called CUDA cores, stream processors, or execution units depending on manufacturer) handle the parallel calculations required for rendering. TMUs (Texture Mapping Units) process texture data, while ROPs (Render Output Units) handle final pixel output. Higher shader counts generally translate to better GPU benchmark performance, especially in demanding games and 3D applications.

Shading Units
2,048
Shaders
2,048
TMUs
128
ROPs
32
Compute Units
32
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R9 M395X Mac Edition Clock Speeds

GPU and memory frequencies

Clock speeds directly impact the Radeon R9 M395X Mac Edition's performance in GPU benchmarks and real-world gaming. The base clock represents the minimum guaranteed frequency, while the boost clock indicates peak performance under optimal thermal conditions. Memory clock speed affects texture loading and frame buffer operations. The Radeon R9 M395X Mac Edition by AMD dynamically adjusts frequencies based on workload, temperature, and power limits to maximize performance while maintaining stability.

GPU Clock
909 MHz
Memory Clock
1365 MHz 5.5 Gbps effective
GDDR GDDR 6X 6X

AMD's Radeon R9 M395X Mac Edition Memory

VRAM capacity and bandwidth

VRAM (Video RAM) is dedicated memory for storing textures, frame buffers, and shader data. The Radeon R9 M395X Mac Edition's memory capacity determines how well it handles high-resolution textures and multiple displays. Memory bandwidth, measured in GB/s, affects how quickly data moves between the GPU and VRAM. Higher bandwidth improves performance in memory-intensive scenarios like 4K gaming. The memory bus width and type (GDDR6, GDDR6X, HBM) significantly influence overall GPU benchmark scores.

Memory Size
4 GB
VRAM
4,096 MB
Memory Type
GDDR5
VRAM Type
GDDR5
Memory Bus
256 bit
Bus Width
256-bit
Bandwidth
174.7 GB/s
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Radeon R9 M395X Mac Edition by AMD Cache

On-chip cache hierarchy

On-chip cache provides ultra-fast data access for the R9 M395X Mac Edition, reducing the need to fetch data from slower VRAM. L1 and L2 caches store frequently accessed data close to the compute units. AMD's Infinity Cache (L3) dramatically increases effective bandwidth, improving GPU benchmark performance without requiring wider memory buses. Larger cache sizes help maintain high frame rates in memory-bound scenarios and reduce power consumption by minimizing VRAM accesses.

L1 Cache
16 KB (per CU)
L2 Cache
512 KB
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R9 M395X Mac Edition Theoretical Performance

Compute and fill rates

Theoretical performance metrics provide a baseline for comparing the AMD Radeon R9 M395X Mac Edition against other graphics cards. FP32 (single-precision) performance, measured in TFLOPS, indicates compute capability for gaming and general GPU workloads. FP64 (double-precision) matters for scientific computing. Pixel and texture fill rates determine how quickly the GPU can render complex scenes. While real-world GPU benchmark results depend on many factors, these specifications help predict relative performance levels.

FP32 (Float)
3.723 TFLOPS
FP64 (Double)
232.7 GFLOPS (1:16)
FP16 (Half)
3.723 TFLOPS (1:1)
Pixel Rate
29.09 GPixel/s
Texture Rate
116.4 GTexel/s
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GCN 3.0 Architecture & Process

Manufacturing and design details

The AMD Radeon R9 M395X Mac Edition is built on AMD's GCN 3.0 architecture, which defines how the GPU processes graphics and compute workloads. The manufacturing process node affects power efficiency, thermal characteristics, and maximum clock speeds. Smaller process nodes pack more transistors into the same die area, enabling higher performance per watt. Understanding the architecture helps predict how the R9 M395X Mac Edition will perform in GPU benchmarks compared to previous generations.

Architecture
GCN 3.0
GPU Name
Amethyst
Process Node
28 nm
Foundry
TSMC
Transistors
5,000 million
Die Size
366 mm²
Density
13.7M / mm²
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AMD's Radeon R9 M395X Mac Edition Power & Thermal

TDP and power requirements

Power specifications for the AMD Radeon R9 M395X Mac Edition determine PSU requirements and thermal management needs. TDP (Thermal Design Power) indicates the heat output under typical loads, guiding cooler selection. Power connector requirements ensure adequate power delivery for stable operation during demanding GPU benchmarks. The suggested PSU wattage accounts for the entire system, not just the graphics card. Efficient power delivery enables the Radeon R9 M395X Mac Edition to maintain boost clocks without throttling.

TDP
250 W
TDP
250W
Power Connectors
None
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Radeon R9 M395X Mac Edition by AMD Physical & Connectivity

Dimensions and outputs

Physical dimensions of the AMD Radeon R9 M395X Mac Edition are critical for case compatibility. Card length, height, and slot width determine whether it fits in your chassis. The PCIe interface version affects bandwidth for communication with the CPU. Display outputs define monitor connectivity options, with modern cards supporting multiple high-resolution displays simultaneously. Verify these specifications against your case and motherboard before purchasing to ensure a proper fit.

Slot Width
MXM Module
Bus Interface
MXM-B (3.0)
Display Outputs
Portable Device Dependent
Display Outputs
Portable Device Dependent
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AMD API Support

Graphics and compute APIs

API support determines which games and applications can fully utilize the AMD Radeon R9 M395X Mac Edition. DirectX 12 Ultimate enables advanced features like ray tracing and variable rate shading. Vulkan provides cross-platform graphics capabilities with low-level hardware access. OpenGL remains important for professional applications and older games. CUDA (NVIDIA) and OpenCL enable GPU compute for video editing, 3D rendering, and scientific applications. Higher API versions unlock newer graphical features in GPU benchmarks and games.

DirectX
12 (12_0)
DirectX
12 (12_0)
OpenGL
4.6
OpenGL
4.6
Vulkan
1.2.170
Vulkan
1.2.170
OpenCL
2.1
Shader Model
6.5
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Radeon R9 M395X Mac Edition Product Information

Release and pricing details

The AMD Radeon R9 M395X Mac Edition is manufactured by AMD as part of their graphics card lineup. Release date and launch pricing provide context for comparing GPU benchmark results with competing products from the same era. Understanding the product lifecycle helps evaluate whether the Radeon R9 M395X Mac Edition by AMD represents good value at current market prices. Predecessor and successor information aids in tracking generational improvements and planning future upgrades.

Manufacturer
AMD
Release Date
May 2015
Production
End-of-life
Predecessor
Solar System
Successor
Polaris Mobile

Radeon R9 M395X Mac Edition Benchmark Scores

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No benchmark data available for this GPU.

About AMD Radeon R9 M395X Mac Edition

AMD Radeon R9 M395X Mac Edition: Performance and Design

The Radeon R9 M395X Mac Edition, built on AMD's GCN 3.0 architecture and a 28nm manufacturing process, was a high-end mobile GPU designed for Apple's workstation-class systems. With 4GB of GDDR5 memory and a TDP of 250W, this MXM-B (3.0) interface-based card balanced raw power against thermal constraints. Targeted at Mac users seeking desktop-grade performance in a compact form, it leveraged AMD's advanced graphics technologies to deliver smooth DirectX 12 and OpenGL rendering. Despite its release in 2015, the card's memory bandwidth and compute units kept it relevant for 1080p gaming, though 4K demands quickly exposed its limitations. The Mac Edition's proprietary cooling solutions and power delivery systems ensured stability in Apple's tightly integrated hardware ecosystem, but its lack of modern benchmark data leaves performance estimates reliant on PC-equivalent comparisons. Its TDP required robust thermal management, a challenge in Macs where space and airflow are optimized for compactness over raw thermodynamics. This GPU represented AMD's push into hybrid setups, merging workstation reliability with gaming-centric features for professionals who dabbled in high-end titles.

Memory and Architecture: Radeon R9 M395X Mac Edition

Powered by 4GB of GDDR5 VRAM, the Radeon R9 M395X Mac Edition tackled texture-heavy workloads in AAA games and content creation workflows. The GCN 3.0 architecture, while aging by 2020s standards, provided efficient compute performance for OpenCL and Metal API-driven applications on macOS. Its memory subsystem prioritized bandwidth over sheer capacity, a design choice that benefited GPU-accelerated tasks like 3D rendering and video editing. Gamers relying on the R9 M395X Mac Edition found it capable of maintaining 60+ FPS in DirectX 11 titles at high settings, though newer engines strained its 28nm silicon. The card's power-hungry nature meant it thrived only in Mac Pros or iMacs with dedicated cooling zones, avoiding throttling in compact chassis. While lacking the 8GB headroom of later GPUs, its 256-bit bus width compensated for demanding shaders and anti-aliasing techniques. For a Mac Edition GPU, it struck a rare equilibrium between workstation-grade precision and gaming-oriented latency reduction.

Thermal and Power Demands of AMD's Radeon R9 M395X

AMD's Radeon R9 M395X variant in Mac systems operated at the edge of thermal feasibility, with its 250W TDP necessitating dual-slot cooling and aggressive fan curves. Apple's engineers mitigated heat through vapor chambers and custom heatsinks, but sustained gaming sessions often triggered audible fan noise in iMacs and Mac Pros. The MXM-B interface allowed for modular upgrades in select builds, though thermal paste degradation over time impacted long-term performance consistency. Enthusiasts pairing this GPU with 6-core Intel CPUs in Macs faced power delivery bottlenecks, as the platform's 180W PSU ceilings in early iMac models struggled to sustain overclocking. Despite GCN 3.0's efficiency gains, the Mac Edition's power envelope limited its competitiveness against NVIDIA's Maxwell-based Quadros in cross-platform workstations. The 4GB VRAM cap further restricted ultra-HD texture packs, pushing users toward 1440p or lower resolutions for maintainable frame rates. Yet, its ability to run Metal-shader games at 1080p without bottlenecking mid-tier CPUs kept

The NVIDIA Equivalent of Radeon R9 M395X Mac Edition

Looking for a similar graphics card from NVIDIA? The NVIDIA GeForce RTX 2080 offers comparable performance and features in the NVIDIA lineup.

NVIDIA GeForce RTX 2080

NVIDIA • 8 GB VRAM

View Specs Compare

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