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PowerColor Hellhound Radeon RX 9070 XT Reva Edition specifications and in-depth review

PowerColor Hellhound Radeon RX 9070 XT Reva Edition

Manufacturer: PowerColor

The PowerColor Hellhound Radeon RX 9070 XT Reva Edition is a graphics card based on AMD's RDNA 4.0 architecture, manufactured on a 4 nm process with 53,900 million transistors. It operates at a base clock of 1660 MHz and reaches a boost of 3010 MHz, while RGB lighting adds a visual element to its triple-display-output design that supports up to four screens simultaneously.

On the memory side, the card carries 16GB of GDDR6 across a 256-bit bus, delivering up to 644.6 GB/s of bandwidth at an effective speed of 20,000 MHz, with ECC support included. Compute throughput sits at 49.32 TFLOPS, backed by 4096 shading units, 256 TMUs, and 128 ROPs, while connectivity is handled through one HDMI 2.1b port and three DisplayPort outputs. The card has a TDP of 304W, carries a 2-year warranty, and measures 346 mm x 151 mm.

Pros
  • Supports up to four displays simultaneously through a combination of one HDMI 2.1b port and three DisplayPort outputs
  • 16GB of GDDR6 memory with a 256-bit bus provides substantial VRAM headroom for demanding workloads
  • ECC memory support adds data integrity reliability for error-sensitive tasks
  • Ray tracing is supported, enabling hardware-accelerated lighting and shadow rendering
  • AMD SAM is included, allowing the CPU to access the full GPU memory pool for improved throughput
  • RGB lighting is present for users who prioritize visual customization in their build
Cons
  • A 304W TDP places notable demands on system power delivery and case airflow
  • No USB-C display output is available, limiting connectivity options for monitors that rely on that interface
  • DLSS and XeSS are not supported, leaving AI-based upscaling limited to AMD's own ecosystem
  • Air-water cooling is not included, so thermal management depends entirely on the air cooler fitted to the card
  • The 346 mm length may pose fitment challenges in smaller or mid-tower cases
Who is this for?

This card is well-suited to users who run demanding rendering and compute workloads, thanks to its 49.32 TFLOPS of floating-point performance, DPFP support, and ECC memory — all of which benefit tasks like 3D rendering, simulation, and GPU-accelerated computing. Content creators and enthusiasts who need extensive display flexibility will appreciate the four-output configuration with HDMI 2.1b and three DisplayPort connections. The 16GB GDDR6 frame buffer with 644.6 GB/s of bandwidth also makes it a solid fit for users working with high-resolution textures or multi-monitor gaming setups where large VRAM capacity is a practical necessity.

Who is this NOT for?

Users building in compact or small-form-factor cases may find the 346 mm card length incompatible with their chassis. Those who rely on AI-based upscaling technologies such as DLSS or XeSS will find no support here, making the card a poor match for workflows or games that depend on those features for performance scaling. Additionally, systems with limited power delivery infrastructure may struggle to accommodate the 304W TDP, making this card unsuitable for builds without a capable PSU and well-ventilated enclosure.

Performance:

GPU clock speed 1660 MHz
GPU turbo 3010 MHz
pixel rate 385.3 GPixel/s
floating-point performance 49.32 TFLOPS
texture rate 770.6 GTexels/s
GPU memory speed 2518 MHz
shading units 4096
texture mapping units (TMUs) 256
render output units (ROPs) 128
Has Double Precision Floating Point (DPFP) ✓

The card runs at a base GPU clock of 1660 MHz, climbing to a boost of 3010 MHz under load, while delivering 49.32 TFLOPS of floating-point performance alongside a pixel rate of 385.3 GPixel/s and a texture rate of 770.6 GTexels/s. It features 4096 shading units, 256 texture mapping units, and 128 render output units, with GPU memory operating at 2518 MHz. Double Precision Floating Point (DPFP) is supported, rounding out a well-specified performance profile across both graphics and compute workloads.

Memory:

effective memory speed 20000 MHz
maximum memory bandwidth 644.6 GB/s
VRAM 16GB
GDDR version GDDR6
memory bus width 256-bit
Supports ECC memory ✓

This card is equipped with 16GB of GDDR6 memory running at an effective speed of 20,000 MHz across a 256-bit bus, yielding a maximum memory bandwidth of 644.6 GB/s. ECC memory support is included, adding a layer of data integrity for workloads that benefit from error correction.

Features:

DirectX version DirectX 12 Ultimate
OpenGL version 4.6
OpenCL version 2.2
Supports multi-display technology ✓
supports ray tracing ✓
Supports 3D ✓
supports DLSS ✕
has XeSS (XMX) ✕
AMD SAM / Intel Resizable BAR AMD SAM
has LHR ✕
has RGB lighting ✓
supported displays 4

The card supports DirectX 12 Ultimate, OpenGL 4.6, and OpenCL 2.2, covering a broad range of graphics and compute APIs. Ray tracing and stereoscopic 3D are both supported, while multi-display technology allows connection of up to four screens simultaneously. AMD SAM is included for CPU-GPU memory access optimization, and RGB lighting is present on the card. DLSS and XeSS (XMX) are not supported, and the card does not feature LHR.

Ports:

has an HDMI output ✓
HDMI ports 1
HDMI version HDMI 2.1b
DisplayPort outputs 3
USB-C ports 0
DVI outputs 0
mini DisplayPort outputs 0

The card's output configuration consists of one HDMI 2.1b port and three DisplayPort outputs, providing a total of four display connections. There are no USB-C, DVI, or mini DisplayPort outputs available.

General info:

GPU architecture RDNA 4.0
Thermal Design Power (TDP) 304W
PCI Express (PCIe) version 5
semiconductor size 4 nm
number of transistors 53900 million
warranty period 2 years
Has air-water cooling ✕
width 346 mm
height 151 mm

Built on the RDNA 4.0 architecture and fabricated at 4 nm with 53,900 million transistors, this card connects via PCIe 5 and carries a TDP of 304W. It does not feature air-water cooling and measures 346 mm in width and 151 mm in height. A 2-year warranty is included.

Final Verdict

The PowerColor Hellhound Radeon RX 9070 XT Reva Edition is a well-specified graphics card that brings together AMD's RDNA 4.0 architecture, a substantial 16GB GDDR6 frame buffer, and 49.32 TFLOPS of floating-point performance into a package aimed at users with serious rendering, compute, or high-resolution display demands. Its four-output connectivity, ECC memory support, and AMD SAM integration speak to a card designed with versatility in mind, though its 304W TDP and 346 mm length mean it requires a suitably equipped system to operate at its best. For users whose builds and workloads align with those requirements, this card represents a capable and feature-complete option within the RDNA 4.0 generation.