AMD Radeon R9 390 X2
AMD graphics card specifications and benchmark scores
At a Glance
AMDAMD Radeon R9 390 X2 Specifications
Radeon R9 390 X2 GPU Core
Shader units and compute resources
The AMD Radeon R9 390 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.
R9 390 X2 Clock Speeds
GPU and memory frequencies
Clock speeds directly impact the Radeon R9 390 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 R9 390 X2 by AMD dynamically adjusts frequencies based on workload, temperature, and power limits to maximize performance while maintaining stability.
AMD's Radeon R9 390 X2 Memory
VRAM capacity and bandwidth
VRAM (Video RAM) is dedicated memory for storing textures, frame buffers, and shader data. The Radeon R9 390 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.
Radeon R9 390 X2 by AMD Cache
On-chip cache hierarchy
On-chip cache provides ultra-fast data access for the R9 390 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.
R9 390 X2 Theoretical Performance
Compute and fill rates
Theoretical performance metrics provide a baseline for comparing the AMD Radeon R9 390 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.
GCN 2.0 Architecture & Process
Manufacturing and design details
The AMD Radeon R9 390 X2 is built on AMD's GCN 2.0 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 390 X2 will perform in GPU benchmarks compared to previous generations.
AMD's Radeon R9 390 X2 Power & Thermal
TDP and power requirements
Power specifications for the AMD Radeon R9 390 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 R9 390 X2 to maintain boost clocks without throttling.
Radeon R9 390 X2 by AMD Physical & Connectivity
Dimensions and outputs
Physical dimensions of the AMD Radeon R9 390 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.
AMD API Support
Graphics and compute APIs
API support determines which games and applications can fully utilize the AMD Radeon R9 390 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.
Radeon R9 390 X2 Product Information
Release and pricing details
The AMD Radeon R9 390 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 R9 390 X2 by AMD represents good value at current market prices. Predecessor and successor information aids in tracking generational improvements and planning future upgrades.
Radeon R9 390 X2 Benchmark Scores
No benchmark data available for this GPU.
About AMD Radeon R9 390 X2
The AMD Radeon R9 390 X2 is an end-of-life graphics card from AMD's Pirate Islands (R9 300) generation, built on GCN 2.0 architecture. The Grenada chip is manufactured on a 28 nm process at TSMC, with 6,200 million transistors on a 438 mm² die, producing a transistor density of 14.2M per mm². The card uses 8 GB of GDDR5 memory on a 512-bit bus, delivering 345.6 GB/s of bandwidth, and its memory clock is listed at 1350 MHz, or 5.4 Gbps effective. It is rated for a 580 W TDP and a suggested 950 W PSU, with four 8-pin power connectors and a triple-slot cooler. The card connects through PCIe 3.0 x16 and was released on September 2, 2015. The database lists no benchmark scores and no nearest rivals, and the card sits at the 50th percentile of all GPUs.
How It Compares
The nearestRivals field in the fact pack is empty. That means there are no direct competing GPU names, scores, or deltaPct values to compare against. As a result, this comparison cannot identify a specific card that the R9 390 X2 beats or loses to. The only comparative datapoint available is the 50th percentile ranking among all GPUs, which places the card at the midpoint of the database's performance distribution. This is not a top-tier or bottom-tier position; it indicates a middle-of-the-field placement. In product-line terms, the card's predecessor is listed as Volcanic Islands, and its successor is Arctic Islands. Within the Pirate Islands generation, it is an AMD design using the Grenada chip and GCN 2.0 architecture, but no specific rival comparisons are supported by the data.
Ray Tracing and Feature Set
No dedicated ray tracing cores are listed in the R9 390 X2 specification, and no tensor cores are listed either. The feature set is therefore defined by the conventional GCN 2.0 compute and graphics pipeline rather than by dedicated hardware acceleration for ray tracing or AI workloads. The card does support DirectX 12 (12_0), OpenGL 4.6, and Vulkan 1.2.170, which gives it access to modern graphics APIs for its generation. Display outputs are 2x DVI, 1x HDMI 1.4a, and 1x DisplayPort 1.2. The core configuration consists of 2,560 shading units, 160 texture mapping units, and 64 raster operation units. Without RT or tensor cores, any ray tracing or machine learning features would rely on general-purpose shading units and compute shaders rather than dedicated hardware.
Power and Cooling
The R9 390 X2 has a TDP of 580 W, and the suggested power supply is 950 W. The card requires four 8-pin power connectors. Its cooler is described as triple-slot, meaning the physical cooler occupies three expansion slots. The fact pack lists no length, height, or width values, so precise case compatibility cannot be quantified from the supplied data. What is clear from the power figures is that this card is a high-draw component: the 580 W TDP is the board's thermal design power, and the 950 W suggested PSU is the recommended system-level power supply figure. Users need to account for four 8-pin connectors and the triple-slot footprint when planning installation.
Who Should Consider It
The R9 390 X2's most notable characteristics are its 8 GB frame buffer, 512-bit memory bus, and 345.6 GB/s memory bandwidth. Those specifications point toward workloads that need large texture storage and high memory throughput, particularly higher-resolution rendering with substantial geometry and texture detail. The 64.00 GPixel/s pixel rate and 160.0 GTexel/s texture rate also indicate a high fill-rate capability. However, no benchmark scores are recorded for the card, so its exact frame-rate position cannot be stated. The 50th percentile all-GPU rank suggests a mid-field result rather than a top-ranked card. The intended use case is high-memory, high-bandwidth rendering from the GCN 2.0 era, with the understanding that it has no direct benchmark evidence in this database.
Benchmark Performance
The R9 390 X2 has no recorded benchmark entries in the fact pack: the benchmarks array is empty, and the average benchmark score is set to 0. Consequently, there are no workload-level scores to report, and no percentage deltas against nearest rivals can be calculated. The raw computed throughput figures are still specified. FP32 performance is 5.120 TFLOPS, texture rate is 160.0 GTexel/s, and pixel rate is 64.00 GPixel/s. These numbers come out of a configuration with 2,560 shading units, 160 texture mapping units, and 64 ROPs. In the absence of actual game or compute benchmarks, these raw rates are the strongest quantitative indicators of performance. The only comparative score-like datapoint in the database is the 50th percentile position among all GPUs, which places the card in the middle of the tracked field. That percentile is the sole evidence for how the card sits relative to the broader GPU landscape.
Memory Subsystem
The memory subsystem is built around 8 GB of GDDR5 on a 512-bit bus. The memory clock is 1350 MHz, and the effective data rate is listed as 5.4 Gbps. Total memory bandwidth is 345.6 GB/s. A 512-bit bus provides a wide path between the GPU and its memory, and 8 GB of capacity is a large pool for a 28 nm generation card. For high-resolution rendering, the combination of capacity and bandwidth is important: large textures require enough VRAM to hold them, while high fill rates require enough bandwidth to feed the rendering pipeline. The pixel rate of 64.00 GPixel/s and texture rate of 160.0 GTexel/s depend on that memory throughput. The data contains no memory benchmark results, so real-world scaling to higher resolutions is not quantified here. The wide bus, large capacity, and high bandwidth are the defining features of this card's memory design.
FAQ
Q: What architecture and process node does the Radeon R9 390 X2 use?
A: It uses GCN 2.0 architecture with the Grenada chip, manufactured on a 28 nm process at TSMC.
Q: How much memory does the card have, and what type of bus does it use?
A: It has 8 GB of GDDR5 memory on a 512-bit bus, with 345.6 GB/s of bandwidth and a memory clock of 1350 MHz, or 5.4 Gbps effective.
Q: What are the power supply requirements?
A: The TDP is 580 W, the suggested PSU is 950 W, and the card requires four 8-pin power connectors.
Q: Does the R9 390 X2 have dedicated ray tracing cores?
A: No, the specification lists no RT cores and no tensor cores.
Q: Which graphics APIs are supported?
A: The card supports DirectX 12 (12_0), OpenGL 4.6, and Vulkan 1.2.170.
Q: What is the production status and generation of the R9 390 X2?
A: Its production status is end-of-life, and it belongs to the Pirate Islands (R9 300) generation.
The NVIDIA Equivalent of Radeon R9 390 X2
Looking for a similar graphics card from NVIDIA? The NVIDIA GeForce RTX 2080 offers comparable performance and features in the NVIDIA lineup.
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