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Galax GeForce RTX 5090 1-Click OC specifications and in-depth review

Galax GeForce RTX 5090 1-Click OC

Manufacturer: Galax

The Galax GeForce RTX 5090 1-Click OC is a high-end graphics card built on NVIDIA's Blackwell architecture, manufactured using a 5nm process with 92.2 billion transistors. It ships with a base GPU clock of 2017 MHz and a boost frequency of 2407 MHz, while the 1-Click OC designation reflects its factory-overclocked configuration out of the box. The card measures 337mm in length and 151mm in height, and features RGB lighting without relying on active liquid cooling.

On the memory side, the card carries 32GB of GDDR7 VRAM across a 512-bit bus, delivering an effective memory speed of 28000 MHz and a peak bandwidth of 1792 GB/s. Compute performance is rated at 104.8 TFLOPS of floating-point throughput, with a texture rate of 1637 GTexels/s and a pixel rate of 423.6 GPixels/s, backed by 21760 shading units, 680 TMUs, and 176 ROPs. The card supports DirectX 12 Ultimate, OpenGL 4.6, OpenCL 3, ray tracing, DLSS, and Intel Resizable BAR, and can drive up to four displays simultaneously through one HDMI 2.1b port and three DisplayPort outputs. It connects via PCIe 5.0 and carries a TDP of 575W.

Pros
  • 32GB of GDDR7 VRAM across a 512-bit bus enables handling of very large datasets and high-resolution textures without memory bottlenecks
  • Support for up to four simultaneous displays through three DisplayPort outputs and one HDMI 2.1b port offers flexible multi-monitor setups
  • Hardware ray tracing and DLSS support are both present, enabling more realistic lighting rendering and upscaling capabilities
  • ECC memory support adds a layer of data integrity useful for compute and professional workloads
  • Intel Resizable BAR support allows the processor to access the full GPU frame buffer, which can improve rendering throughput
  • RGB lighting is integrated into the card for users who want visible customization within their build
Cons
  • A 575W TDP places very high demands on the power supply, requiring a substantial and well-specified system build
  • The card does not include any USB-C output, which limits direct connectivity to certain modern monitors and displays
  • At 337mm in length and 151mm in height, the card has a large physical footprint that may not fit in compact or mid-tower cases
  • There is no air-water cooling option included, so thermal management depends entirely on the air cooling solution provided
  • DVI output is absent, making the card incompatible with older monitors that rely solely on that connection
Who is this for?

This card is well-suited to users who regularly work with demanding rendering, compute, or AI workloads that benefit from 32GB of ECC-capable GDDR7 memory and 104.8 TFLOPS of floating-point performance. Content creators, 3D artists, and simulation professionals will find the combination of high memory bandwidth, DPFP support, and a wide 512-bit bus particularly relevant for their pipelines. Gamers and enthusiasts running high-resolution, ray-traced workloads across multiple displays will also be well served, especially given the four-display output capability and native DLSS support.

Who is this NOT for?

Users working within compact or small-form-factor builds will likely find this card impractical, as its 337mm length and 151mm height demand a full-size case with ample clearance. The 575W TDP also makes it unsuitable for systems with modest power supplies or limited airflow, since the thermal demands require a well-specced build to operate reliably. Additionally, anyone still relying on DVI-connected monitors or USB-C display setups will face compatibility limitations, as neither connector type is present on this card's output panel.

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 Galax GeForce RTX 5090 1-Click OC operates at a base GPU clock of 2017 MHz, climbing to 2407 MHz in boost mode, while the GPU memory runs at 1750 MHz. Floating-point performance is rated at 104.8 TFLOPS, complemented by a texture rate of 1637 GTexels/s and a pixel rate of 423.6 GPixel/s. The card is equipped with 21760 shading units, 680 texture mapping units, and 176 render output units, and it does support Double Precision Floating Point (DPFP) processing.

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 card features 32GB of GDDR7 VRAM running across a 512-bit memory bus, delivering an effective memory speed of 28000 MHz and a peak bandwidth of 1792 GB/s. ECC memory support is also included, adding an layer of data integrity for workloads that require it.

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 Galax GeForce RTX 5090 1-Click OC supports DirectX 12 Ultimate, OpenGL 4.6, and OpenCL 3, covering a broad range of graphics and compute APIs. It includes hardware-accelerated ray tracing and DLSS support, alongside stereoscopic 3D and multi-display technology for up to four simultaneous outputs. Intel Resizable BAR is supported, while XeSS (XMX) and LHR are not present on this card. 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, providing a total of four display 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 337 mm
height 151 mm

The Galax GeForce RTX 5090 1-Click OC is built on the Blackwell architecture, fabricated using a 5nm process and integrating 92,200 million transistors. It connects via PCIe 5.0 and carries a 575W TDP, with cooling handled exclusively by air — there is no integrated air-water cooling solution. The card measures 337mm in width and 151mm in height, giving a clear sense of its physical footprint.

Final Verdict

The Galax GeForce RTX 5090 1-Click OC is a specification-dense graphics card that leaves little ambiguity about its intended purpose. Built on the Blackwell architecture and equipped with 32GB of GDDR7 memory across a 512-bit bus, it is clearly aimed at users who push hardware to its limits — whether through high-resolution rendering, ray-traced workloads, or compute-intensive professional tasks. Its physical size and 575W power requirement mean it demands a purpose-built environment to perform reliably, which naturally narrows the field of compatible systems. For users whose builds can accommodate it, the combination of raw throughput, broad API support, multi-display capability, and ECC memory makes it a well-rounded option for both creative and technical workloads at the top end of the market.