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Inno3D GeForce RTX 5090 X3 OC specifications and in-depth review

Inno3D GeForce RTX 5090 X3 OC

Manufacturer: Inno3D

The Inno3D GeForce RTX 5090 X3 OC is a flagship-tier graphics card from Inno3D, built around Nvidia's Blackwell GPU architecture. It ships with 32GB of GDDR7 VRAM across a 512-bit memory bus, delivering a maximum memory bandwidth of 1792 GB/s and an effective memory speed of 28000 MHz. The card features RGB lighting and supports up to four simultaneous displays through its combination of one HDMI 2.1b port and three DisplayPort outputs.

On the performance side, the Inno3D GeForce RTX 5090 X3 OC operates at a base GPU clock of 2017 MHz with a turbo frequency of 2452 MHz, translating to 106.7 TFLOPS of floating-point performance and a texture rate of 1667.4 GTexels/s. The GPU integrates 21,760 shading units, 680 texture mapping units, and 176 render output units, all manufactured on a 5 nm process node with 92,200 million transistors. It connects via PCIe 5.0, supports DirectX 12 Ultimate, OpenGL 4.6, OpenCL 3, ray tracing, and DLSS, and has a rated thermal design power of 575W with dimensions of 333 mm in length and 137 mm in height.

Pros
  • The 512-bit memory bus paired with 32GB of GDDR7 VRAM delivers a maximum bandwidth of 1,792 GB/s, enabling smooth handling of large textures and memory-intensive workloads
  • Support for ray tracing and DLSS expands rendering options for compatible applications
  • Four simultaneous display outputs — three DisplayPort and one HDMI 2.1b — offer flexible multi-monitor setups
  • ECC memory support adds a layer of data integrity for error-sensitive compute tasks
  • The PCIe 5.0 interface ensures the card is compatible with current-generation motherboard platforms
  • RGB lighting allows for visual customization within a build
Cons
  • A TDP of 575W places significant demands on system power delivery and cooling infrastructure
  • The card does not include air-water cooling, leaving thermal management entirely dependent on the case airflow and the card's own fan solution
  • At 333 mm in length, the card requires a suitably spacious chassis to fit without clearance issues
  • The absence of USB-C output limits direct connectivity options for displays or devices that rely on that port type
Who is this for?

This card is well-suited for users running demanding compute and rendering workloads that can take full advantage of 32GB of GDDR7 VRAM, 106.7 TFLOPS of floating-point throughput, and ECC memory support — making it a strong fit for GPU-accelerated tasks alongside high-end graphics work. The combination of ray tracing, DLSS, and DirectX 12 Ultimate support also makes it appropriate for users working with visually intensive real-time rendering pipelines. Those requiring multi-display configurations of up to four screens will find the port layout accommodating, and the Intel Resizable BAR support further aligns the card with modern high-throughput system builds.

Who is this NOT for?

The card's 575W TDP makes it poorly suited for users with compact or modestly powered systems, as it demands a robust power supply and well-ventilated chassis — the lack of air-water cooling only reinforces the need for a capable thermal environment. Its 333 mm length also rules it out for small form factor builds where physical clearance is limited. Additionally, users who rely on USB-C display connectivity or DVI outputs will find no support for those interfaces here, making it a poor match for setups dependent on those connection types.

Performance:

GPU clock speed 2017 MHz
GPU turbo 2452 MHz
pixel rate 431.6 GPixel/s
floating-point performance 106.7 TFLOPS
texture rate 1667.4 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 a turbo frequency of 2452 MHz, supporting a floating-point throughput of 106.7 TFLOPS. Backing these figures are 21,760 shading units, 680 texture mapping units, and 176 render output units, which together yield a texture rate of 1667.4 GTexels/s and a pixel rate of 431.6 GPixel/s. The GPU memory runs at 1750 MHz, and the card includes support for Double Precision Floating Point (DPFP), broadening its suitability for compute-intensive workloads alongside graphics tasks.

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, achieving an effective memory speed of 28,000 MHz and a maximum memory bandwidth of 1,792 GB/s. ECC memory support is also included, which helps maintain data integrity in error-sensitive computing scenarios.

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 workloads. Ray tracing and DLSS are both supported, alongside stereoscopic 3D and multi-display technology spanning up to four displays simultaneously. It is compatible with Intel Resizable BAR for improved CPU-to-GPU data throughput, and includes RGB lighting. XeSS (XMX) and LHR are not present on this card.

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 three DisplayPort outputs and one HDMI 2.1b port, totaling four available display connections. There are no DVI, mini DisplayPort, or USB-C outputs present 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 333 mm
height 137 mm

Built on the Blackwell architecture and fabricated using a 5 nm process node, the GPU integrates 92,200 million transistors and connects to the system via PCIe 5.0. It carries a Thermal Design Power of 575W and does not include air-water cooling. The card measures 333 mm in width and 137 mm in height.

Final Verdict

The Inno3D GeForce RTX 5090 X3 OC is a card built around raw capability, combining the Blackwell architecture with 32GB of GDDR7 VRAM across a 512-bit bus, 106.7 TFLOPS of floating-point performance, and a broad feature set that includes ray tracing, DLSS, DirectX 12 Ultimate, and ECC memory support. It is firmly positioned for users who can accommodate its substantial 575W power draw and 333 mm footprint within a suitably equipped system. Those constraints aside, the card delivers a technically comprehensive package for demanding rendering and compute workloads, and its four-display output configuration adds practical versatility for complex multi-monitor setups. For users whose systems meet the necessary requirements, it represents a well-specified option at the top end of the graphics card category.

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