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Colorful iGame GeForce RTX 5080 Neptune OC specifications and in-depth review

Colorful iGame GeForce RTX 5080 Neptune OC

Manufacturer: Colorful

The Colorful iGame GeForce RTX 5080 Neptune OC is a high-specification graphics card built on NVIDIA's Blackwell architecture, manufactured on a 5 nm process with 45,600 million transistors. Running on the PCIe 5.0 interface, it features a base clock of 2295 MHz and a boost clock of 2695 MHz, delivering 57.95 TFLOPS of floating-point performance alongside a pixel fill rate of 301.8 GPixel/s and a texture rate of 905.5 GTexels/s.

On the memory side, the card is equipped with 16GB of GDDR7 VRAM across a 256-bit bus, reaching an effective memory speed of 30,000 MHz and a maximum bandwidth of 960 GB/s, with ECC support included. Display connectivity spans five outputs — two HDMI 2.1b ports and three DisplayPort connections — supporting up to four simultaneous displays. The card supports DirectX 12 Ultimate, OpenGL 4.6, OpenCL 3, ray tracing, DLSS, Intel Resizable BAR, stereoscopic 3D, and RGB lighting, all within a 282.2 × 145 mm form factor drawing up to 400W.

Pros
  • Supports up to four simultaneous displays through five physical outputs — two HDMI 2.1b and three DisplayPort connections
  • 16GB of GDDR7 VRAM on a 256-bit bus delivers 960 GB/s of memory bandwidth, suitable for memory-intensive workloads
  • Hardware ray tracing and DLSS support are both included, enabling more visually demanding rendering pipelines
  • ECC memory support adds a layer of data integrity for compute-oriented use cases
  • Intel Resizable BAR support allows the CPU to access the full GPU frame buffer, which can improve data transfer efficiency
  • Built-in RGB lighting offers visual customization without requiring additional hardware
Cons
  • A 400W TDP places substantial demands on system power delivery and requires a well-specced PSU
  • The card does not include air-water cooling, so thermal management relies entirely on the bundled air cooler
  • No USB-C output is available, limiting direct connectivity with USB-C monitors or devices
  • At 282.2 mm in length, the card may not fit in compact or smaller mid-tower cases without careful clearance checks
Who is this for?

This card is well-suited to users running demanding rendering and compute workloads that can take advantage of 57.95 TFLOPS of floating-point performance, 16GB of GDDR7 VRAM, and ECC memory support. Creative professionals working with high-resolution textures, 3D scene rendering, or GPU-accelerated compute tasks will benefit from the 960 GB/s memory bandwidth and the large VRAM pool. It also fits well in multi-monitor setups, supporting up to four displays across five output ports, and users who rely on ray tracing or DLSS-based rendering pipelines will find both features natively supported.

Who is this NOT for?

The card's 400W TDP makes it a poor fit for users with modest power supplies or thermally constrained cases, as it places significant demands on both the PSU and airflow without offering an air-water cooling option. Its 282.2 mm length also rules it out for compact or small-form-factor builds where physical clearance is limited. Users who rely on USB-C display connectivity or need DVI outputs for legacy monitors will also find this card unsuitable, as neither interface is present on the I/O panel.

Performance:

GPU clock speed 2295 MHz
GPU turbo 2695 MHz
pixel rate 301.8 GPixel/s
floating-point performance 57.95 TFLOPS
texture rate 905.5 GTexels/s
GPU memory speed 1875 MHz
shading units 10752
texture mapping units (TMUs) 336
render output units (ROPs) 112
Has Double Precision Floating Point (DPFP) ✓

The Performance section of the Colorful iGame GeForce RTX 5080 Neptune OC covers a broad set of compute and rendering metrics. The GPU operates at a base clock of 2295 MHz, climbing to a boost clock of 2695 MHz, and delivers 57.95 TFLOPS of floating-point performance alongside Double Precision Floating Point (DPFP) support. Pixel output reaches 301.8 GPixel/s, while the texture rate stands at 905.5 GTexels/s, backed by 336 texture mapping units and 112 render output units. The card's 10,752 shading units contribute to its compute throughput, and the GPU memory runs at 1875 MHz to feed those resources efficiently.

Memory:

effective memory speed 30000 MHz
maximum memory bandwidth 960 GB/s
VRAM 16GB
GDDR version GDDR7
memory bus width 256-bit
Supports ECC memory ✓

The card is equipped with 16GB of GDDR7 VRAM running across a 256-bit memory bus, reaching an effective memory speed of 30,000 MHz and a maximum memory bandwidth of 960 GB/s. ECC memory support is also included, allowing for error detection and correction in workloads where data integrity is a priority.

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 Colorful iGame GeForce RTX 5080 Neptune OC supports DirectX 12 Ultimate, OpenGL 4.6, and OpenCL 3, covering a wide range of graphics and compute workloads. It includes hardware-accelerated ray tracing and DLSS support, along with stereoscopic 3D and multi-display technology for up to four simultaneous displays. Intel Resizable BAR is supported to help optimize data transfers between the CPU and GPU, 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 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 five connections in total. There are no USB-C, DVI, or mini DisplayPort outputs on this model.

General info:

GPU architecture Blackwell
Thermal Design Power (TDP) 400W
PCI Express (PCIe) version 5
semiconductor size 5 nm
number of transistors 45600 million
Has air-water cooling ✕
width 282.2 mm
height 145 mm

The Colorful iGame GeForce RTX 5080 Neptune OC is built on the Blackwell architecture, fabricated on a 5 nm process and integrating 45,600 million transistors. It connects via PCIe 5.0 and carries a Thermal Design Power of 400W. The card does not include air-water cooling, and its physical dimensions measure 282.2 mm in width and 145 mm in height.

Final Verdict

The Colorful iGame GeForce RTX 5080 Neptune OC is a specification-dense graphics card built around NVIDIA's Blackwell architecture, and its technical profile reflects a clear focus on compute-heavy and visually demanding workloads. With 16GB of GDDR7 VRAM delivering 960 GB/s of memory bandwidth, alongside native ray tracing, DLSS, and ECC memory support, it addresses the needs of users who require both rendering capability and data reliability in a single card. Its physical footprint and 400W power draw do impose real infrastructure requirements, meaning it rewards users with well-equipped systems rather than general-purpose builds. For those whose workloads align with what it offers, the Neptune OC represents a technically thorough option within the high-end graphics card segment.

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