Asus ROG Astral LC GeForce RTX 5090 OC Edition

Name: Asus ROG Astral LC GeForce RTX 5090 OC Edition
Brand: Asus
SKU: 181716

Manufacturer: Asus

The Asus ROG Astral LC GeForce RTX 5090 OC Edition is a flagship graphics card designed for demanding workloads, built around Nvidia's Blackwell architecture on a 5nm process node. It features 112.3 TFLOPS of floating-point performance alongside a boost clock of 2580 MHz, making it one of the more fully-equipped cards in its generation. RGB lighting and an air-water hybrid cooling solution are included as part of the card's physical design.

On the memory side, the card carries 32GB of GDDR7 VRAM across a 512-bit bus, delivering a maximum bandwidth of 1790 GB/s at an effective speed of 28000 MHz. Its 21,760 shading units are complemented by 680 texture mapping units and 176 render output units. Display connectivity includes two HDMI 2.1b ports and three DisplayPort outputs for a total of up to four simultaneous displays. The card supports DirectX 12 Ultimate, OpenCL 3.0, ray tracing, DLSS, and Intel Resizable BAR, and connects via PCIe 5.0.

Pros

The 512-bit memory bus paired with 32GB of GDDR7 VRAM delivers a maximum bandwidth of 1790 GB/s, which benefits memory-intensive workloads significantly
With 21,760 shading units, 680 texture mapping units, and 176 ROPs, the card offers a dense compute configuration suited to complex rendering tasks
Support for up to four simultaneous displays across five physical output ports (two HDMI 2.1b and three DisplayPort) provides flexible multi-monitor setups
ECC memory support adds a layer of data integrity protection, making the card more suitable for error-sensitive compute applications
The hybrid air-water cooling system helps manage the thermal output of a card operating at this power envelope
Ray tracing and DLSS support are both present, enabling access to these rendering features in compatible applications

Cons

A TDP of 575W places substantial demands on system power delivery and case airflow planning
The absence of USB-C and DVI outputs limits connectivity options for users relying on those interfaces
At 288.5mm wide and 153.7mm tall, the physical dimensions require careful case compatibility checks before installation
XeSS (XMX) is not supported, restricting upscaling options to DLSS only
The lack of LHR may be a consideration in contexts where mining throttling is a relevant factor for the intended deployment environment

Who is this for?

This card is well-matched for users running demanding rendering and compute workloads that benefit from a wide memory bus, high bandwidth, and a large VRAM pool — such as 3D rendering, simulation, or AI-adjacent tasks that leverage DPFP and ECC memory support. It is equally suited to those building high-end multi-monitor setups, given the five physical display outputs supporting up to four simultaneous screens. Users who have invested in a system with PCIe 5.0 compatibility and robust power delivery infrastructure will be able to take full advantage of what the card's architecture offers.

Who is this NOT for?

The card's 575W TDP makes it a poor fit for users with smaller form-factor builds, limited PSU headroom, or cases with restricted airflow, as the thermal and power requirements demand a well-ventilated, high-capacity system. Those relying on USB-C or DVI display connections will find the port selection lacking, as neither interface is present. Additionally, users whose workflows depend on XeSS-based upscaling will not find support for it here, making the card a less natural fit for environments built around that particular technology.

Performance:

GPU clock speed	2017 MHz
GPU turbo	2580 MHz
pixel rate	454.1 GPixel/s
floating-point performance	112.3 TFLOPS
texture rate	1754 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 2580 MHz, supported by 21,760 shading units, 680 texture mapping units, and 176 render output units. Floating-point throughput reaches 112.3 TFLOPS, while the texture rate and pixel rate come in at 1754 GTexels/s and 454.1 GPixel/s respectively. GPU memory operates at 1750 MHz, and the card includes support for Double Precision Floating Point (DPFP), broadening its suitability for compute-oriented tasks alongside graphics workloads.

Memory:

effective memory speed	28000 MHz
maximum memory bandwidth	1790 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 28000 MHz and a maximum bandwidth of 1790 GB/s. ECC memory support is also included, which adds a layer of data integrity protection useful in error-sensitive workloads.

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 XeSS (XMX) is not included. Multi-display technology is present with support for up to four simultaneous displays, and stereoscopic 3D is also available. Intel Resizable BAR is supported, whereas LHR is not. RGB lighting is built into the card's design.

Ports:

has an HDMI output	✓
HDMI ports	2
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 two HDMI 2.1b ports and three DisplayPort outputs, providing a total of five display connectors. There are no USB-C, DVI, or mini DisplayPort outputs included.

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	288.5 mm
height	153.7 mm

Built on the Blackwell architecture using a 5nm manufacturing process, the card integrates 92,200 million transistors and connects via PCIe 5.0. It carries a Thermal Design Power (TDP) of 575W and features an air-water hybrid cooling solution to manage thermals. Physical dimensions come in at 288.5mm wide and 153.7mm tall.

Final Verdict

The Asus ROG Astral LC GeForce RTX 5090 OC Edition is a thoroughly specified graphics card built around Nvidia's Blackwell architecture, and its combination of a dense shader configuration, 1790 GB/s of memory bandwidth via a 512-bit GDDR7 bus, and ECC support positions it firmly at the upper end of what current consumer GPU hardware offers. The hybrid air-water cooling and five-port display output selection add practical utility, though the 575W TDP and the physical footprint mean it demands a purpose-built system with the headroom to match. For users whose environments are equipped to support it, the Asus ROG Astral LC RTX 5090 OC Edition represents a coherent and well-rounded high-end graphics card choice.