RADEON

AMD Radeon Instinct MI325X

AMD graphics card specifications and benchmark scores

288 GB
VRAM
2100
MHz Boost
1000W
TDP
8192
Bus Width
🔗MCM Design

AMD Radeon Instinct MI325X Specifications

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Radeon Instinct MI325X GPU Core

Shader units and compute resources

The AMD Radeon Instinct MI325X 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
19,456
Shaders
19,456
TMUs
1,216
Compute Units
304
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Instinct MI325X Clock Speeds

GPU and memory frequencies

Clock speeds directly impact the Radeon Instinct MI325X'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 Instinct MI325X by AMD dynamically adjusts frequencies based on workload, temperature, and power limits to maximize performance while maintaining stability.

Base Clock
1000 MHz
Base Clock
1,000 MHz
Boost Clock
2100 MHz
Boost Clock
2,100 MHz
Memory Clock
2525 MHz 10.1 Gbps effective
GDDR GDDR 6X 6X

AMD's Radeon Instinct MI325X Memory

VRAM capacity and bandwidth

VRAM (Video RAM) is dedicated memory for storing textures, frame buffers, and shader data. The Radeon Instinct MI325X'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
288 GB
VRAM
294,912 MB
Memory Type
HBM3e
VRAM Type
HBM3e
Memory Bus
8192 bit
Bus Width
8192-bit
Bandwidth
10.3 TB/s
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Radeon Instinct MI325X by AMD Cache

On-chip cache hierarchy

On-chip cache provides ultra-fast data access for the Instinct MI325X, 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
16 MB
Infinity Cache
256 MB
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Instinct MI325X Theoretical Performance

Compute and fill rates

Theoretical performance metrics provide a baseline for comparing the AMD Radeon Instinct MI325X 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)
81.72 TFLOPS
FP64 (Double)
81.72 TFLOPS (1:1)
FP16 (Half)
653.7 TFLOPS (8:1)
Pixel Rate
0 MPixel/s
Texture Rate
2,553.6 GTexel/s
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CDNA 3.0 Architecture & Process

Manufacturing and design details

The AMD Radeon Instinct MI325X is built on AMD's CDNA 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 Instinct MI325X will perform in GPU benchmarks compared to previous generations.

Architecture
CDNA 3.0
GPU Name
Aqua Vanjaram
Process Node
5 nm
Foundry
TSMC
Transistors
153,000 million
Die Size
1017 mm²
Density
150.4M / mm²
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AMD's Radeon Instinct MI325X Power & Thermal

TDP and power requirements

Power specifications for the AMD Radeon Instinct MI325X 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 Instinct MI325X to maintain boost clocks without throttling.

TDP
1000 W
TDP
1000W
Power Connectors
None
Suggested PSU
1400 W
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Radeon Instinct MI325X by AMD Physical & Connectivity

Dimensions and outputs

Physical dimensions of the AMD Radeon Instinct MI325X 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
OAM Module
Bus Interface
PCIe 5.0 x16
Display Outputs
No outputs
Display Outputs
No outputs
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AMD API Support

Graphics and compute APIs

API support determines which games and applications can fully utilize the AMD Radeon Instinct MI325X. 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.

OpenCL
3.0
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Radeon Instinct MI325X Product Information

Release and pricing details

The AMD Radeon Instinct MI325X 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 Instinct MI325X by AMD represents good value at current market prices. Predecessor and successor information aids in tracking generational improvements and planning future upgrades.

Manufacturer
AMD
Predecessor
FirePro Data Center

Radeon Instinct MI325X Benchmark Scores

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No benchmark data available for this GPU.

About AMD Radeon Instinct MI325X

The AMD Radeon Instinct MI325X (AMD) arrives as a formidable enterprise-grade accelerator, engineered for demanding AI training and high-performance computing workloads. Its headline feature is a monumental 288 GB of cutting-edge HBM3e memory, a specification that directly targets massive model training by keeping vast datasets resident on-chip. This immense capacity is paired with a modern PCIe 5.0 x16 interface, ensuring rapid data movement to and from host systems to feed the compute engines. When evaluating cost, the AMD Radeon Instinct MI325X commands a premium price point reflective of its specialized hardware and server-room positioning. However, its total cost of ownership must be measured against the productivity gains from reduced model swapping and increased researcher throughput. For organizations processing billion-parameter models, the AMD Radeon Instinct MI325X (AMD) can justify its upfront cost by significantly accelerating time-to-insight and simplifying data pipeline complexity.

In the competitive landscape, the AMD Radeon Instinct MI325X (AMD) finds its primary rivals in other flagship accelerators from NVIDIA, such as the H200, which also emphasize high-bandwidth memory for AI. The key differentiator often lies in the software ecosystem and framework optimization, where NVIDIA currently holds an established lead with CUDA. AMD counters with its open ROCm platform, which, while maturing rapidly, requires careful consideration for integration into existing AI infrastructure. For cost-conscious data centers building new clusters or those committed to an open software strategy, the AMD Radeon Instinct MI325X presents a compelling architectural alternative. Its sheer memory volume provides a tangible advantage for memory-bound tasks that competitors may address through different architectural approaches. The investment value, therefore, hinges not just on raw specs but on how well the entire AMD software and hardware stack aligns with an organization's specific workload portfolio and in-house expertise.

Assessing the long-term investment value of the AMD Radeon Instinct MI325X involves analyzing its performance per watt and architectural longevity. Built on a 5 nm process with the CDNA 3.0 architecture, it promises improved efficiency over previous generations, a critical factor given its 1000W TDP. The card's high boost clock of 2100 MHz indicates strong performance in FP64 and matrix operations central to scientific simulation and AI. This combination of process node and architecture suggests a product designed for relevance across multiple hardware refresh cycles in a data center. Deploying the AMD Radeon Instinct MI325X (AMD) is an investment in a platform that aims to handle increasingly large and complex models over the coming years. Its design philosophy prioritizes memory capacity and bandwidth, which are becoming the primary bottlenecks in advanced AI research, thereby protecting the investment against near-term obsolescence.

The system requirements for integrating the AMD Radeon Instinct MI325X are substantial and must be meticulously planned. The 1000W thermal design power necessitates enterprise-grade power delivery, advanced rack cooling solutions, and server chassis explicitly validated for such high-wattage accelerators. Host systems require robust PCIe 5.0 support, typically found in the latest server platforms from AMD and Intel, to fully leverage the high-speed interface. Adequate CPU core count and system memory are also prerequisites to prevent bottlenecking the immense throughput of the AMD Radeon Instinct MI325X. Furthermore, successful deployment is contingent upon software support through the ROCm stack and ensuring compatibility with target AI frameworks and in-house applications. Ultimately, harnessing the full potential of this accelerator demands a holistic, purpose-built system rather than a simple component upgrade, underscoring its role as a cornerstone for next-generation AI infrastructure.

The NVIDIA Equivalent of Radeon Instinct MI325X

Looking for a similar graphics card from NVIDIA? The NVIDIA GeForce RTX 5070 SUPER offers comparable performance and features in the NVIDIA lineup.

NVIDIA GeForce RTX 5070 SUPER

NVIDIA • 18 GB VRAM

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