Gainward GeForce RTX 5070 Phoenix-S GS specifications and in-depth review

Gainward GeForce RTX 5070 Phoenix-S GS

Manufacturer: Gainward

The Gainward GeForce RTX 5070 Phoenix-S GS is a desktop graphics card based on NVIDIA's Blackwell architecture, manufactured on a 5 nm process with 31,100 million transistors. It ships with 12GB of GDDR7 VRAM across a 192-bit memory bus and supports Intel Resizable BAR, ray tracing, and DLSS, alongside RGB lighting and compatibility with up to four displays simultaneously.

On the performance side, the card runs a base GPU clock of 2325 MHz with a boost of 2572 MHz, delivering 31.6 TFLOPS of floating-point throughput and a texture rate of 493.8 GTexels/s. Its 6144 shading units are paired with 192 TMUs and 80 ROPs, while the GDDR7 memory operates at an effective speed of 28000 MHz for a peak bandwidth of 672 GB/s. Display output is handled through one HDMI 2.1b port and three DisplayPort connections, and the card connects to the system via a PCIe 5.0 interface within a 331.9 × 127.1 mm form factor at a 250W TDP.

Pros
  • Supports ray tracing and DLSS, enabling hardware-accelerated visual effects and AI-based rendering features
  • GDDR7 memory with an effective speed of 28000 MHz and 672 GB/s bandwidth supports high data throughput for demanding workloads
  • ECC memory support helps maintain data integrity in error-sensitive compute tasks
  • Four simultaneous display outputs via one HDMI 2.1b and three DisplayPort connections offer flexible multi-monitor configurations
  • Intel Resizable BAR support allows the CPU broader access to GPU memory, which can improve frame delivery in compatible systems
  • RGB lighting is included for users who want visual customization in their build
Cons
  • The 192-bit memory bus is relatively narrow for a card with this level of compute throughput, which may limit memory-intensive scenarios
  • No USB-C display output is available, which can be a limitation for users with USB-C monitors or VR headsets that rely on that connection
  • Water cooling is not supported, leaving thermal management entirely dependent on the air cooling solution
  • At 331.9 mm in length, the card requires a sufficiently spacious case, which may not suit compact or mid-tower builds with limited GPU clearance
  • XeSS (XMX) is not supported, restricting AI upscaling options to DLSS only
Who is this for?

This card is well-suited to users running demanding 3D rendering and gaming workloads that benefit from ray tracing, DLSS, and high floating-point throughput. The 12GB of GDDR7 memory with 672 GB/s bandwidth makes it a reasonable fit for content creators working with high-resolution textures or GPU-accelerated compute tasks, particularly where ECC memory support adds value in error-sensitive workflows. Those running multi-monitor setups of up to four displays will also find the output configuration practical, especially with HDMI 2.1b covering high-refresh or high-resolution panels alongside three DisplayPort connections.

Who is this NOT for?

Users working in environments that demand liquid cooling solutions will find this card limiting, as water cooling is not supported and thermal management relies entirely on air cooling — which may be a concern in thermally constrained or high-ambient-temperature setups. Those with compact or small form-factor cases may struggle to accommodate the 331.9 mm length, making it unsuitable for builds where physical space is at a premium. Additionally, users who rely on USB-C display connectivity or XeSS-based AI upscaling will find both features absent, which narrows compatibility with certain monitors and limits upscaling options to DLSS alone.

Performance:

GPU clock speed 2325 MHz
GPU turbo 2572 MHz
pixel rate 205.8 GPixel/s
floating-point performance 31.6 TFLOPS
texture rate 493.8 GTexels/s
GPU memory speed 1750 MHz
shading units 6144
texture mapping units (TMUs) 192
render output units (ROPs) 80
Has Double Precision Floating Point (DPFP)

The Performance section of this card centers on a base GPU clock of 2325 MHz that boosts up to 2572 MHz, supporting a floating-point throughput of 31.6 TFLOPS alongside a texture rate of 493.8 GTexels/s and a pixel rate of 205.8 GPixel/s. Underpinning these figures are 6144 shading units, 192 texture mapping units, and 80 render output units, while the GPU memory itself runs at 1750 MHz. The card also supports Double Precision Floating Point (DPFP), broadening its suitability for workloads that require high-accuracy numerical computation.

Memory:

effective memory speed 28000 MHz
maximum memory bandwidth 672 GB/s
VRAM 12GB
GDDR version GDDR7
memory bus width 192-bit
Supports ECC memory

This card is equipped with 12GB of GDDR7 VRAM running at an effective speed of 28000 MHz across a 192-bit memory bus, yielding a maximum memory bandwidth of 672 GB/s. ECC memory support is also included, which helps maintain data integrity 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 workloads. Ray tracing and DLSS are both supported, while XeSS (XMX) is not available on this model. Multi-display technology is present with support for up to four simultaneous displays, and Intel Resizable BAR is included to help improve data transfer between the CPU and GPU. Stereoscopic 3D is also supported, the card features RGB lighting, and it does not carry LHR (Lite Hash Rate) restrictions.

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 display output configuration consists of one HDMI 2.1b port and three DisplayPort outputs, offering a total of four connections for multi-monitor setups. There are no USB-C, DVI, or mini DisplayPort outputs available on this model.

General info:

GPU architecture Blackwell
Thermal Design Power (TDP) 250W
PCI Express (PCIe) version 5
semiconductor size 5 nm
number of transistors 31100 million
Has air-water cooling
width 331.9 mm
height 127.1 mm

Built on the Blackwell architecture using a 5 nm manufacturing process, this card integrates 31,100 million transistors and connects to the system via a PCIe 5.0 interface. It carries a 250W TDP and relies on air cooling, as water cooling is not supported. The card measures 331.9 mm in width and 127.1 mm in height, which is relevant for case compatibility planning.

Final Verdict

The Gainward GeForce RTX 5070 Phoenix-S GS brings together a capable set of specifications built around the Blackwell architecture, with ray tracing, DLSS, and 672 GB/s of GDDR7 memory bandwidth forming the core of its technical appeal. It covers a broad range of use cases — from GPU-accelerated compute tasks benefiting from ECC support to multi-display gaming and content creation workflows — though its 331.9 mm length, air-only cooling, and absence of USB-C output are practical constraints worth accounting for before committing to a build. For users whose system meets its physical and thermal requirements, it represents a well-rounded option within its product category.

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