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Galax GeForce RTX 5070 Ti Stellar Luna OC specifications and in-depth review

Galax GeForce RTX 5070 Ti Stellar Luna OC

Manufacturer: Galax

The Galax GeForce RTX 5070 Ti Stellar Luna OC is a desktop graphics card based on Nvidia's Blackwell architecture, manufactured on a 5 nm process and equipped with 8,960 shading units. Running at a base clock of 2,295 MHz with a boost up to 2,527 MHz, the card also includes RGB lighting and support for up to four simultaneous displays, making it a feature-rich option in the high-end GPU segment.

On the memory side, the card carries 16GB of GDDR7 VRAM across a 256-bit bus, delivering an effective memory speed of 28,000 MHz and a peak bandwidth of 896 GB/s. It supports DirectX 12 Ultimate, OpenGL 4.6, OpenCL 3, ray tracing, and DLSS, while connectivity is handled through one HDMI 2.1b port and three DisplayPort outputs. With a TDP of 350W and dimensions of 348 mm by 155 mm, the card connects via PCIe 5.0 and includes Intel Resizable BAR support.

Pros
  • Supports up to four simultaneous displays, offering flexible multi-monitor setups
  • 16GB of GDDR7 VRAM across a 256-bit bus delivers substantial memory capacity for demanding workloads
  • ECC memory support adds a layer of data integrity for error-sensitive tasks
  • HDMI 2.1b and three DisplayPort outputs provide a versatile range of connectivity options
  • RGB lighting allows for visual customization within a system build
  • Intel Resizable BAR support enables more efficient data streaming between the CPU and GPU
Cons
  • A 350W TDP places significant demands on the power supply and system cooling
  • The card measures 348 mm in length, which may not fit in smaller or mid-tower cases
  • No USB-C output limits compatibility with certain modern monitors and displays
  • Water cooling is not supported, leaving users reliant solely on the air cooling solution
  • No DVI or mini DisplayPort outputs may require adapters for use with older display hardware
Who is this for?

This card is well-suited to users running demanding rendering, 3D, and compute workloads that can take advantage of 16GB of GDDR7 VRAM, high memory bandwidth, and DPFP support. The combination of ray tracing and DLSS support also makes it a strong fit for users engaged in graphically intensive real-time applications. With four display outputs and multi-display technology support, it also serves users who rely on expansive multi-monitor workflows in professional or creative environments.

Who is this NOT for?

At 348 mm in length and with a 350W TDP, this card is not well-suited to users working with compact or small-form-factor builds where physical space and power delivery are constrained. The absence of USB-C output and water cooling support also makes it a poor fit for users who require direct compatibility with USB-C monitors or who need liquid cooling options for thermally restricted enclosures. Users looking for a low-power, energy-efficient setup will also find the high TDP impractical for their needs.

Performance:

GPU clock speed 2295 MHz
GPU turbo 2527 MHz
pixel rate 242.6 GPixel/s
floating-point performance 45.28 TFLOPS
texture rate 707.6 GTexels/s
GPU memory speed 1750 MHz
shading units 8960
texture mapping units (TMUs) 280
render output units (ROPs) 96
Has Double Precision Floating Point (DPFP) ✓

The card operates at a base GPU clock of 2,295 MHz, boosting up to 2,527 MHz under load, while the GPU memory runs at 1,750 MHz. With 45.28 TFLOPS of floating-point performance and a texture rate of 707.6 GTexels/s, the GPU is backed by 8,960 shading units, 280 texture mapping units, and 96 render output units. The pixel rate reaches 242.6 GPixel/s, and the card includes support for Double Precision Floating Point (DPFP), rounding out a solid set of performance specifications.

Memory:

effective memory speed 28000 MHz
maximum memory bandwidth 896 GB/s
VRAM 16GB
GDDR version GDDR7
memory bus width 256-bit
Supports ECC memory ✓

This card is equipped with 16GB of GDDR7 VRAM running across a 256-bit memory bus, with an effective memory speed of 28,000 MHz and a maximum memory bandwidth of 896 GB/s. ECC memory support is also included, which helps maintain data integrity 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 workloads. Ray tracing, DLSS, and stereoscopic 3D are all supported, while XeSS (XMX) and LHR are not present on this model. Multi-display technology is supported with a maximum of four simultaneous outputs, and Intel Resizable BAR is included to help improve data transfer between the CPU and GPU. RGB lighting is also featured, along with no hardware-level mining limiter.

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 model.

General info:

GPU architecture Blackwell
Thermal Design Power (TDP) 350W
PCI Express (PCIe) version 5
semiconductor size 5 nm
number of transistors 45600 million
Has air-water cooling ✕
width 348 mm
height 155 mm

Built on the Blackwell architecture using a 5 nm manufacturing process, the GPU integrates 45,600 million transistors and connects to the system via PCIe 5.0. It carries a Thermal Design Power of 350W and measures 348 mm in width and 155 mm in height. The card uses air cooling only, as water cooling is not supported.

Final Verdict

The Galax GeForce RTX 5070 Ti Stellar Luna OC is a high-specification graphics card built around Nvidia's Blackwell architecture, combining 16GB of GDDR7 VRAM with 896 GB/s of memory bandwidth to handle intensive rendering, compute, and multi-display workloads with confidence. Its support for ray tracing, DLSS, DirectX 12 Ultimate, and up to four simultaneous outputs positions it firmly within the enthusiast and professional creative segment. Prospective buyers should account for its 350W TDP and 348 mm length when planning a build, as these physical and power demands narrow its compatibility with smaller or lower-powered systems. For users whose setup can accommodate those requirements, this card delivers a well-rounded and feature-complete package.