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Gainward GeForce RTX 5090 Phantom specifications and in-depth review

Gainward GeForce RTX 5090 Phantom

Manufacturer: Gainward

The Gainward GeForce RTX 5090 Phantom is a high-end graphics card based on NVIDIA's Blackwell architecture, targeting users who require substantial compute and rendering capabilities. It carries 32GB of GDDR7 memory across a 512-bit bus, delivering a maximum memory bandwidth of 1792 GB/s — a figure that reflects the card's orientation toward demanding workloads. RGB lighting is included, and the card supports up to four simultaneous displays.

On the performance side, the RTX 5090 Phantom operates at a base GPU clock of 2017 MHz, boosting up to 2407 MHz under load, with a texture rate of 1637 GTexels/s backed by 680 texture mapping units and 176 ROPs. Its 104.8 TFLOPS of floating-point throughput is complemented by support for ray tracing, DLSS, DirectX 12 Ultimate, and OpenGL 4.6. The card connects via PCIe 5.0, carries a TDP of 575W, and is manufactured on a 5nm process housing approximately 92.2 billion transistors. Output options include one HDMI 2.1b port and three DisplayPort connections, with Intel Resizable BAR support also present.

Pros
  • The 512-bit memory bus paired with 32GB of GDDR7 VRAM delivers a maximum bandwidth of 1792 GB/s, which supports sustained throughput in memory-intensive workloads
  • With 21,760 shading units and a boost clock of 2407 MHz, the card offers substantial rasterization throughput backed by a high pixel rate of 423.6 GPixel/s
  • Ray tracing and DLSS support are both present, enabling hardware-accelerated rendering and AI-based upscaling without relying on software fallbacks
  • Support for up to four simultaneous displays through a combination of one HDMI 2.1b port and three DisplayPort outputs provides flexible multi-monitor configurations
  • ECC memory support adds a layer of data integrity assurance useful in compute and precision-sensitive workloads
  • Double Precision Floating Point (DPFP) support extends the card's suitability beyond graphics into compute applications that require high-precision arithmetic
Cons
  • A TDP of 575W places significant demands on system power delivery and cooling infrastructure, requiring a well-specced power supply
  • The card does not include air-water cooling, so thermal management relies entirely on the bundled air cooler regardless of workload intensity
  • With a width of 331.9 mm, the card occupies considerable physical space and may not fit in smaller or mid-tower chassis without careful clearance checks
  • There are no USB-C or DVI outputs, which limits compatibility with certain older displays or devices that rely on those connection types
Who is this for?

This card is well-suited to users running demanding rendering, 3D visualization, or compute workloads that benefit from high floating-point throughput and Double Precision Floating Point support. The 32GB of GDDR7 VRAM across a 512-bit bus makes it a practical fit for working with large datasets, high-resolution textures, or complex scenes that would exhaust smaller framebuffers. Users looking to drive up to four displays simultaneously will find the port configuration accommodating, and those invested in ray-traced or DLSS-enabled pipelines will be able to take direct advantage of the hardware support for both features.

Who is this NOT for?

The card's 575W TDP makes it a poor fit for anyone working within constrained power budgets or using systems without robust power delivery, as the electrical and thermal demands are substantial. Its physical length of 331.9 mm also means it is not well-suited to compact or small-form-factor builds where clearance is limited. Additionally, users who depend on USB-C video output or legacy DVI connectivity will find the port selection incompatible with their existing display hardware, since neither interface is present on this card.

Performance:

GPU clock speed 2017 MHz
GPU turbo 2407 MHz
pixel rate 423.6 GPixel/s
floating-point performance 104.8 TFLOPS
texture rate 1637 GTexels/s
GPU memory speed 1750 MHz
shading units 21760
texture mapping units (TMUs) 680
render output units (ROPs) 176
Has Double Precision Floating Point (DPFP) ✓

The Performance section of the Gainward GeForce RTX 5090 Phantom centers on a base GPU clock of 2017 MHz that boosts up to 2407 MHz under load, supported by a GPU memory speed of 1750 MHz. With 21,760 shading units, 680 texture mapping units, and 176 render output units, the card achieves a texture rate of 1637 GTexels/s and a pixel rate of 423.6 GPixel/s. Floating-point performance reaches 104.8 TFLOPS, and the card includes support for Double Precision Floating Point (DPFP), making it capable of handling workloads that require high-precision compute.

Memory:

effective memory speed 28000 MHz
maximum memory bandwidth 1792 GB/s
VRAM 32GB
GDDR version GDDR7
memory bus width 512-bit
Supports ECC memory ✓

The Gainward GeForce RTX 5090 Phantom is equipped with 32GB of GDDR7 VRAM running across a 512-bit memory bus, with an effective memory speed of 28,000 MHz that translates to a maximum memory bandwidth of 1792 GB/s. ECC memory support is also present, which helps maintain data integrity during compute-intensive tasks.

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 Gainward GeForce RTX 5090 Phantom supports DirectX 12 Ultimate, OpenGL 4.6, and OpenCL 3, covering a broad range of graphics and compute APIs. Ray tracing and DLSS are both supported, alongside stereoscopic 3D and multi-display technology spanning up to four outputs simultaneously. Intel Resizable BAR is present, while XeSS (XMX) and LHR are not included. RGB lighting is built in, rounding out the feature set on the physical side.

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 Gainward GeForce RTX 5090 Phantom offers a total of four video outputs: one HDMI 2.1b port and three DisplayPort connections. There are no USB-C, DVI, or mini DisplayPort outputs on this card.

General info:

GPU architecture Blackwell
Thermal Design Power (TDP) 575W
PCI Express (PCIe) version 5
semiconductor size 5 nm
number of transistors 92200 million
Has air-water cooling ✕
width 331.9 mm
height 145.6 mm

The Gainward GeForce RTX 5090 Phantom is built on the Blackwell architecture, fabricated using a 5nm process and packing approximately 92,200 million transistors onto the die. It connects via PCIe 5.0 and carries a Thermal Design Power of 575W, reflecting the demands of its performance tier. The card does not include air-water cooling. Physically, it measures 331.9 mm in width and 145.6 mm in height.

Final Verdict

The Gainward GeForce RTX 5090 Phantom is a graphics card built around a clear set of priorities: high compute throughput, substantial memory capacity, and broad API and feature support. Its 32GB of GDDR7 VRAM across a 512-bit bus, combined with hardware ray tracing, DLSS, and Double Precision Floating Point support, makes it a capable fit for users whose workloads push well beyond conventional gaming into rendering, visualization, or precision compute tasks. The 575W TDP and 331.9 mm length are real constraints that demand careful system planning, and the absence of USB-C output narrows display compatibility for some setups. Taken as a whole, the RTX 5090 Phantom is a card that rewards users with the infrastructure to support it — those who can meet its power and space requirements will find a well-equipped platform for sustained, high-demand workloads.

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