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Gainward GeForce RTX 4080 Super Phoenix GS specifications and in-depth review

Gainward GeForce RTX 4080 Super Phoenix GS

Manufacturer: Gainward

The Gainward GeForce RTX 4080 Super Phoenix GS is a full-sized graphics card built on Nvidia's Ada Lovelace architecture, targeting users who need a high-throughput rendering solution. With 53.45 TFLOPS of floating-point performance delivered through 10240 shading units, the card is oriented toward workloads that place heavy demands on the GPU pipeline. RGB lighting is included, and the card supports up to four simultaneous displays.

Memory is handled by 16GB of GDDR6X VRAM on a 256-bit bus, operating at an effective speed of 23000 MHz and reaching a maximum bandwidth of 736.3 GB/s. ECC memory support is present, and the card covers DirectX 12 Ultimate, OpenGL 4.6, OpenCL 3, ray tracing, and DLSS. Output connectivity consists of one HDMI 2.1a port and three DisplayPort outputs, with no USB-C, DVI, or mini DisplayPort. The card runs at a 320W TDP, uses PCIe 4.0, is built on a 5 nm process with approximately 45.9 billion transistors, and measures 328.9 mm in length and 131.1 mm in height, with air cooling only.

Pros
  • 53.45 TFLOPS of floating-point throughput and 10240 shading units make it capable of handling compute-heavy and rendering-intensive workloads
  • 736.3 GB/s of memory bandwidth across a GDDR6X configuration gives the card substantial data throughput for texture-heavy tasks
  • ECC memory support adds data integrity protection, which is useful for sustained professional or compute workloads
  • Ray tracing and DLSS are both supported, enabling two significant rendering capabilities within a single card
  • Intel Resizable BAR is enabled, allowing the CPU full access to the GPU frame buffer for smoother data transfers
  • RGB lighting is included for users who want visual customization within their build
Cons
  • A 320W TDP places considerable demands on the system power supply and overall chassis cooling
  • Water cooling is not supported, meaning thermal management is limited to the included air-cooling solution
  • At 328.9 mm in length, the card may not fit in smaller or mid-tower cases without careful clearance checks
  • Only one HDMI port is available, which limits flexibility for users who rely on multiple HDMI-connected displays
  • No USB-C output is present, requiring an adapter for monitors or devices that use USB-C for video input
Who is this for?

This card is well-suited to users who regularly push through demanding rendering and ray tracing workloads, where its 53.45 TFLOPS of floating-point throughput and 10240 shading units can be fully leveraged. The 16GB of GDDR6X VRAM with 736.3 GB/s of bandwidth also makes it a practical fit for content creators and compute-oriented workflows that benefit from a large, high-speed frame buffer with ECC protection. Users who need to drive up to four displays simultaneously will also find the output configuration — one HDMI 2.1a and three DisplayPort — accommodating for multi-monitor environments.

Who is this NOT for?

At 328.9 mm in length and with a 320W TDP, this card is not a practical choice for compact or small-form-factor builds where physical clearance and power headroom are limited. Users who depend on multiple HDMI connections may find the single HDMI port restrictive, as there is no USB-C output either to compensate. Additionally, those who require liquid cooling for noise reduction or extreme thermal control will find this model unsuitable, since only air cooling is supported.

Performance:

GPU clock speed 2295 MHz
GPU turbo 2610 MHz
pixel rate 292.3 GPixel/s
floating-point performance 53.45 TFLOPS
texture rate 835.2 GTexels/s
GPU memory speed 1438 MHz
shading units 10240
texture mapping units (TMUs) 320
render output units (ROPs) 112
Has Double Precision Floating Point (DPFP) ✓

The card operates at a base clock of 2295 MHz, rising to 2610 MHz under boost, with 10240 shading units and 320 texture mapping units driving a texture rate of 835.2 GTexels/s. Its 112 render output units yield a pixel rate of 292.3 GPixel/s, and overall floating-point throughput reaches 53.45 TFLOPS. GPU memory runs at 1438 MHz, and Double Precision Floating Point is supported, extending the card's utility to compute workloads that require DPFP capability.

Memory:

effective memory speed 23000 MHz
maximum memory bandwidth 736.3 GB/s
VRAM 16GB
GDDR version GDDR6X
memory bus width 256-bit
Supports ECC memory ✓

The card is equipped with 16GB of GDDR6X VRAM running at an effective speed of 23000 MHz across a 256-bit memory bus, delivering a maximum bandwidth of 736.3 GB/s. ECC memory support is also present, providing an added layer of data reliability for workloads where memory integrity is a consideration.

Features:

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

The card supports DirectX 12 Ultimate, OpenGL 4.6, and OpenCL 3, covering the key graphics and compute APIs. Ray tracing and DLSS are both supported, while XeSS (XMX) is not available on this model. Multi-display output is enabled for up to four screens, and stereoscopic 3D is also supported. Intel Resizable BAR is active, and LHR is absent. RGB lighting is present on the card, rounding out its feature set on the physical side.

Ports:

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

Output connectivity is provided through one HDMI 2.1a port and three DisplayPort outputs, totaling four video connectors. There are no USB-C, DVI, or mini DisplayPort outputs on this model.

General info:

GPU architecture Ada Lovelace
Thermal Design Power (TDP) 320W
PCI Express (PCIe) version 4
semiconductor size 5 nm
number of transistors 45900 million
Has air-water cooling ✕
width 328.9 mm
height 131.1 mm

This card is based on the Ada Lovelace architecture, fabricated on a 5 nm process with approximately 45,900 million transistors, and connects via PCIe 4.0. It carries a 320W TDP and relies entirely on air cooling, as water cooling is not supported. Physically, the card measures 328.9 mm in length and 131.1 mm in height, which should be factored into case compatibility planning.

Final Verdict

The Gainward GeForce RTX 4080 Super Phoenix GS is a capable, spec-dense graphics card that delivers on the compute and rendering front, with 53.45 TFLOPS of floating-point throughput and 16GB of GDDR6X VRAM running at 736.3 GB/s bandwidth forming the backbone of its performance profile. Support for ray tracing, DLSS, DirectX 12 Ultimate, and ECC memory rounds out a feature set that suits both creative and compute-driven workloads. That said, its 320W TDP, 328.9 mm length, and air-only cooling mean it demands a well-planned system build with adequate power and physical clearance. For users whose setup can accommodate those requirements, the Gainward GeForce RTX 4080 Super Phoenix GS represents a technically well-equipped option in the graphics card category.