RADEON

AMD Radeon HD 7970 X2

AMD graphics card specifications and benchmark scores

3 GB
VRAM
โ€”
MHz Boost
500W
TDP
384
Bus Width

AMD Radeon HD 7970 X2 Specifications

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Radeon HD 7970 X2 GPU Core

Shader units and compute resources

The AMD Radeon HD 7970 X2 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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HD 7970 X2 Clock Speeds

GPU and memory frequencies

Clock speeds directly impact the Radeon HD 7970 X2'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 HD 7970 X2 by AMD dynamically adjusts frequencies based on workload, temperature, and power limits to maximize performance while maintaining stability.

GPU Clock
925 MHz
Memory Clock
1375 MHz 5.5 Gbps effective
GDDR GDDR 6X 6X

AMD's Radeon HD 7970 X2 Memory

VRAM capacity and bandwidth

VRAM (Video RAM) is dedicated memory for storing textures, frame buffers, and shader data. The Radeon HD 7970 X2'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
3 GB
VRAM
3,072 MB
Memory Type
GDDR5
VRAM Type
GDDR5
Memory Bus
384 bit
Bus Width
384-bit
Bandwidth
264.0 GB/s
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Radeon HD 7970 X2 by AMD Cache

On-chip cache hierarchy

On-chip cache provides ultra-fast data access for the HD 7970 X2, 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
768 KB
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HD 7970 X2 Theoretical Performance

Compute and fill rates

Theoretical performance metrics provide a baseline for comparing the AMD Radeon HD 7970 X2 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)
3.789 TFLOPS
FP64 (Double)
947.2 GFLOPS (1:4)
Pixel Rate
29.60 GPixel/s
Texture Rate
118.4 GTexel/s
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GCN 1.0 Architecture & Process

Manufacturing and design details

The AMD Radeon HD 7970 X2 is built on AMD's GCN 1.0 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 HD 7970 X2 will perform in GPU benchmarks compared to previous generations.

Architecture
GCN 1.0
GPU Name
New Zealand
Process Node
28 nm
Foundry
TSMC
Transistors
4,313 million
Die Size
352 mmยฒ
Density
12.3M / mmยฒ
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AMD's Radeon HD 7970 X2 Power & Thermal

TDP and power requirements

Power specifications for the AMD Radeon HD 7970 X2 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 HD 7970 X2 to maintain boost clocks without throttling.

TDP
500 W
TDP
500W
Power Connectors
3x 8-pin
Suggested PSU
900 W
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Radeon HD 7970 X2 by AMD Physical & Connectivity

Dimensions and outputs

Physical dimensions of the AMD Radeon HD 7970 X2 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
Triple-slot
Length
308 mm 12.1 inches
Height
137 mm 5.4 inches
Bus Interface
PCIe 3.0 x16
Display Outputs
2x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Display Outputs
2x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
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AMD API Support

Graphics and compute APIs

API support determines which games and applications can fully utilize the AMD Radeon HD 7970 X2. 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 (11_1)
DirectX
12 (11_1)
OpenGL
4.6
OpenGL
4.6
Vulkan
1.2.170
Vulkan
1.2.170
OpenCL
2.1 (1.2)
Shader Model
6.5 (5.1)
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Radeon HD 7970 X2 Product Information

Release and pricing details

The AMD Radeon HD 7970 X2 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 HD 7970 X2 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
Aug 2012
Launch Price
899 USD
Production
End-of-life
Predecessor
Northern Islands
Successor
Sea Islands

Radeon HD 7970 X2 Benchmark Scores

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No benchmark data available for this GPU.

About AMD Radeon HD 7970 X2

The AMD Radeon HD 7970 X2, a dual-GPU powerhouse released by AMD on August 31, 2012, was engineered to deliver extreme graphical performance for high-end workstations and gaming rigs. Built on the 28 nm GCN 1.0 architecture, this PCIe 3.0 x16 card integrates two Tahiti GPU cores, each with 1.5 GB of GDDR5 memory, totaling 3 GB of high-speed VRAM. Designed for compute-intensive tasks, it supports OpenCL 1.1, enabling efficient execution of parallel workloads across its 6144 stream processors. While it lacks CUDA support due to being an AMD product, its OpenCL capabilities made it a competitive option for scientific simulations, video encoding, and computational physics on compatible software stacks. With a substantial TDP of 500 watts, the card demanded robust cooling and power delivery, reflecting its positioning in the upper echelon of workstation and enthusiast hardware at the time. The launch price of $899 targeted professionals and early adopters seeking top-tier performance, though thermal and power requirements limited widespread adoption in densely packed workstations. Despite these constraints, its raw parallel processing throughput offered tangible benefits in workloads optimized for OpenCL and GPU compute. The dual-GPU design allowed for significant performance scaling in supported applications, though driver and software optimization challenges occasionally limited real-world gains. When evaluating the AMD Radeon HD 7970 X2 in 3D rendering workflows, its dual-GPU configuration presented both opportunities and complexities. The combined compute power of two GCN 1.0 GPUs provided high throughput for rendering engines that could effectively distribute workloads across multiple GPUs, such as those using OpenCL-based renderers like LuxCoreRender or older versions of Blender Cycles. However, rendering performance was highly dependent on software support for multi-GPU load balancing, and not all professional applications at the time efficiently leveraged dual-GPU cards. The 3 GB of total GDDR5 memory, split between the two dies, could become a bottleneck in complex scenes with high-resolution textures and geometry. Additionally, the cardโ€™s lack of certified drivers for professional ISV applications such as those from Autodesk, Dassault Systรจmes, or Siemens meant it was rarely used in mission-critical design or engineering environments. Instead, it found more traction among hobbyists and small studios prioritizing raw performance over certification and stability. The absence of ECC memory and professional feature sets further distanced it from true workstation-class GPUs like those in the FirePro line. Still, for users running unlicensed or open-source rendering tools, the AMD Radeon HD 7970 X2 offered a cost-effective path to high compute density. Its performance in rendering benchmarks was impressive on paper, but real-world usability was tempered by software limitations and thermal constraints. Multi-GPU considerations are central to understanding the role and limitations of the dual-GPU AMD Radeon HD 7970 X2 in workstation environments. Unlike traditional SLI or CrossFire setups, this card integrated both GPUs on a single PCB, reducing motherboard compatibility issues but increasing thermal density and power draw within the chassis. The 500-watt TDP required high-quality 1000W+ power supplies and excellent case airflow to maintain stable operation under sustained loads. Since both GPUs shared the same thermal solution, hotspots and throttling could occur if cooling was inadequate, especially in rack-mounted or compact workstation builds. Software support for dual-GPU cards was inconsistent, with many professional applications failing to scale linearly or recognize both GPUs equally, leading to underutilization. Additionally, the cardโ€™s reliance on PCIe 3.0 x16 did not bottleneck data transfer, but memory bandwidth between GPUs was limited by the internal bridge, affecting performance in data-intensive compute tasks. While the card delivered exceptional theoretical performance for its time, the lack of professional certifications and ISV support hindered its adoption in enterprise settings. The AMD Radeon HD 7970 X2 ultimately served as a transitional product, showcasing the potential of multi-GPU designs before the industry shifted toward single, more efficient high-core-count GPUs. Its legacy lies in pushing the boundaries of consumer-grade hardware in compute workloads, despite inherent limitations in professional deployment.

The NVIDIA Equivalent of Radeon HD 7970 X2

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 โ€ข 8 GB VRAM

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