Gainward GeForce RTX 5090 Phantom GS

Name: Gainward GeForce RTX 5090 Phantom GS
Brand: Gainward
SKU: 8283

Manufacturer: Gainward

The Gainward GeForce RTX 5090 Phantom GS is a high-end graphics card based on NVIDIA's Blackwell architecture, manufactured on a 5nm process and equipped with 21,760 shading units. It operates at a base clock of 2017 MHz with a boost ceiling of 2527 MHz, and its 110 TFLOPS of floating-point performance reflects the substantial compute capability packed into this design. RGB lighting is included, and the card supports up to four displays simultaneously.

On the memory side, the RTX 5090 Phantom GS carries 32GB of GDDR7 VRAM across a 512-bit bus, delivering a maximum bandwidth of 1792 GB/s at an effective speed of 28,000 MHz. The card supports DirectX 12 Ultimate, OpenGL 4.6, OpenCL 3, ray tracing, and DLSS, along with Intel Resizable BAR. Connectivity is handled through one HDMI 2.1b port and three DisplayPort outputs, while the card draws up to 575W and connects via PCIe 5.0.

Pros

The 512-bit memory bus paired with 32GB of GDDR7 VRAM delivers a maximum bandwidth of 1792 GB/s, which supports demanding rendering and compute workloads
With 21,760 shading units and 680 texture mapping units, the card is equipped to handle highly detailed scene rendering
Ray tracing and DLSS support are both present, enabling more realistic lighting simulation alongside AI-assisted rendering
Multi-display support allows up to four screens to be connected simultaneously, with three DisplayPort and one HDMI 2.1b output available
ECC memory support reduces the risk of data corruption in precision-sensitive compute tasks
RGB lighting is built into the card for users who incorporate visual customization into their builds

Cons

A TDP of 575W places significant demands on system power supplies, requiring careful planning around power delivery and thermal management
The card does not include air-water cooling, so users relying on liquid cooling solutions will need to source a compatible third-party option separately
At 331.9 mm in length, the card requires a sufficiently large chassis, which may rule out smaller form factor builds
There are no USB-C or DVI outputs, limiting compatibility with displays or devices that rely on those connection types

Who is this for?

This card is well-suited to users running workloads that demand substantial memory capacity and throughput, such as those working with high-resolution rendering, 3D content creation, or large-scale compute tasks that benefit from 32GB of GDDR7 VRAM and ECC memory support. The combination of ray tracing, DLSS, and 110 TFLOPS of floating-point performance also makes it a strong fit for users pushing graphically intensive applications where visual fidelity and computational throughput matter. Additionally, anyone needing to drive up to four displays simultaneously through a mix of HDMI 2.1b and DisplayPort outputs will find the connectivity range practical for multi-monitor setups.

Who is this NOT for?

With a TDP of 575W and physical dimensions of 331.9 mm in length, this card is not well-suited to users working within compact or small form factor systems where space and power delivery are constrained. The absence of air-water cooling means it is also a poor match for users who have built or planned a custom liquid cooling loop and expect native integration without additional hardware. Users who rely on USB-C or DVI display connections will find the port selection limiting, as neither output type is present on this card.

Performance:

GPU clock speed	2017 MHz
GPU turbo	2527 MHz
pixel rate	444.8 GPixel/s
floating-point performance	110 TFLOPS
texture rate	1718 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 this card centers on a base GPU clock of 2017 MHz that boosts up to 2527 MHz, paired with a floating-point throughput of 110 TFLOPS and a texture rate of 1718 GTexels/s. It deploys 21,760 shading units and 680 texture mapping units (TMUs) to handle rendering workloads, while 176 render output units (ROPs) contribute to a pixel rate of 444.8 GPixel/s. The GPU memory runs at 1750 MHz, and the card includes support for Double Precision Floating Point (DPFP), making it capable of handling compute tasks that require 64-bit precision.

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	✓

This card is equipped with 32GB of GDDR7 VRAM running across a 512-bit memory bus, reaching an effective memory speed of 28,000 MHz and a maximum bandwidth of 1792 GB/s. ECC memory support is included, which allows the hardware to detect and correct certain types of memory errors during operation.

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 a broad range of graphics and compute APIs. Ray tracing and DLSS are both supported, while stereoscopic 3D and multi-display technology are also available, with the card capable of driving up to four displays simultaneously. Intel Resizable BAR is supported, whereas XeSS (XMX) and LHR are not present on this model. RGB lighting is built in, rounding out the feature set on the hardware 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 card's output configuration consists of one HDMI 2.1b port and three DisplayPort outputs, giving a total of four available display connections. There are no USB-C, DVI, or mini DisplayPort outputs on this model.

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

Built on the Blackwell architecture and fabricated at 5nm, the GPU integrates 92,200 million transistors and connects to the system via PCIe 5.0. It carries a Thermal Design Power (TDP) of 575W and does not include air-water cooling. The card measures 331.9 mm in width and 145.6 mm in height.

Final Verdict

The Gainward GeForce RTX 5090 Phantom GS is a specification-dense graphics card built around the Blackwell architecture, and its technical profile reflects a clear focus on demanding professional and enthusiast workloads. Its 32GB of GDDR7 VRAM backed by 1792 GB/s of memory bandwidth positions it firmly in territory where memory-hungry rendering, compute, and multi-display tasks are the norm rather than the exception. The 575W TDP and 331.9 mm length do impose real constraints on system compatibility, and users should plan their builds accordingly. For those whose environments can accommodate its power and space requirements, the RTX 5090 Phantom GS delivers a comprehensive feature set — spanning ray tracing, DLSS, ECC memory, and PCIe 5.0 support — that leaves little room for compromise on capability.