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Colorful iGame GeForce RTX 4080 Super Neptune OC specifications and in-depth review

Colorful iGame GeForce RTX 4080 Super Neptune OC

Manufacturer: Colorful

The Colorful iGame GeForce RTX 4080 Super Neptune OC is a high-end graphics card that combines NVIDIA's Ada Lovelace architecture with a liquid-assisted cooling solution, reflecting Colorful's Neptune line approach to thermal management. Built on a 5 nm semiconductor process and packing 45,900 million transistors, this card operates at a base clock of 2295 MHz with a boost frequency reaching 2640 MHz, delivering 54.07 TFLOPS of floating-point performance alongside a 350W TDP rating.

On the memory side, the card is equipped with 16GB of GDDR6X running across a 256-bit bus at an effective speed of 23,000 MHz, yielding up to 736 GB/s of bandwidth and supporting ECC memory. Its 10,240 shading units, 320 texture mapping units, and 112 render output units contribute to a texture rate of 844.8 GTexels/s and a pixel rate of 295.7 GPixel/s. Feature support includes DirectX 12 Ultimate, OpenGL 4.6, OpenCL 3, ray tracing, DLSS, Intel Resizable BAR, and RGB lighting, while connectivity is handled through one HDMI 2.1 port and three DisplayPort outputs, with the card capable of driving up to four displays simultaneously.

Pros
  • Supports ray tracing and DLSS, enabling more advanced rendering capabilities in compatible applications
  • 16GB of GDDR6X memory across a 256-bit bus provides substantial VRAM headroom for memory-intensive workloads
  • The hybrid air-water cooling solution addresses the thermal demands of a 350W TDP card
  • Four simultaneous display outputs, combining one HDMI 2.1 and three DisplayPort connections, offers flexible multi-monitor setups
  • ECC memory support adds a layer of data integrity for compute-oriented tasks
  • Built-in RGB lighting allows for visual customization within a system build
Cons
  • A 350W TDP places significant demands on system power delivery and case airflow planning
  • The absence of USB-C and DVI outputs limits compatibility with certain monitors and display adapters
  • No XeSS support restricts upscaling options to DLSS exclusively
  • At 253.5 mm wide and 170.8 mm tall, the card's physical footprint may not suit all mid-tower or compact cases
Who is this for?

This card is well-suited to users who run demanding rendering workloads or need substantial VRAM capacity, as the 16GB of GDDR6X memory and 736 GB/s of bandwidth accommodate large textures and complex scenes without running into memory constraints. Those working in GPU compute environments will benefit from ECC memory support and Double Precision Floating Point capability, which add reliability and precision to numerical tasks. The hybrid air-water cooling system and high boost clock also make it a reasonable fit for users who keep their systems under sustained load and want thermal headroom without relying purely on passive airflow.

Who is this NOT for?

Users working in space-constrained builds may find the card's 253.5 mm width and 170.8 mm height difficult to accommodate in compact or smaller mid-tower cases. Those who rely on USB-C or DVI display connections will need to consider adapter solutions, as neither port type is present on this card. Additionally, systems with limited power delivery infrastructure may struggle with the 350W TDP, making this card a poor fit for users who have not accounted for robust power supply headroom in their setup.

Performance:

GPU clock speed 2295 MHz
GPU turbo 2640 MHz
pixel rate 295.7 GPixel/s
floating-point performance 54.07 TFLOPS
texture rate 844.8 GTexels/s
GPU memory speed 1438 MHz
shading units 10240
texture mapping units (TMUs) 320
render output units (ROPs) 112
Has Double Precision Floating Point (DPFP) ✓

The Performance section of the Colorful iGame GeForce RTX 4080 Super Neptune OC centers on a GPU running at a base clock of 2295 MHz, with a turbo frequency of 2640 MHz driving the card's compute output to 54.07 TFLOPS of floating-point performance. Its 10,240 shading units work alongside 320 texture mapping units and 112 render output units to produce a texture rate of 844.8 GTexels/s and a pixel rate of 295.7 GPixel/s, while the GPU memory operates at 1438 MHz. Double Precision Floating Point (DPFP) is supported, broadening the card's utility for workloads that benefit from higher numerical precision.

Memory:

effective memory speed 23000 MHz
maximum memory bandwidth 736 GB/s
VRAM 16GB
GDDR version GDDR6X
memory bus width 256-bit
Supports ECC memory ✓

The Colorful iGame GeForce RTX 4080 Super Neptune OC is equipped with 16GB of GDDR6X memory running across a 256-bit bus, reaching an effective speed of 23,000 MHz and delivering a maximum memory bandwidth of 736 GB/s. ECC memory support is included, which helps maintain data integrity during demanding computational tasks.

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 4080 Super Neptune OC 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 present on this card. It includes Intel Resizable BAR support and does not feature LHR. Multi-display technology is enabled, allowing up to four screens to be connected simultaneously, and stereoscopic 3D is also supported. RGB lighting is built into the card's design.

Ports:

has an HDMI output ✓
HDMI ports 1
HDMI version HDMI 2.1
DisplayPort outputs 3
USB-C ports 0
DVI outputs 0
mini DisplayPort outputs 0

The Colorful iGame GeForce RTX 4080 Super Neptune OC offers a total of four video outputs: one HDMI 2.1 port and three DisplayPort outputs. There are no USB-C, DVI, or mini DisplayPort connections on this card.

General info:

GPU architecture Ada Lovelace
Thermal Design Power (TDP) 350W
PCI Express (PCIe) version 4
semiconductor size 5 nm
number of transistors 45900 million
Has air-water cooling ✓
width 253.5 mm
height 170.8 mm

The Colorful iGame GeForce RTX 4080 Super Neptune OC is based on the Ada Lovelace architecture, manufactured on a 5 nm process node with 45,900 million transistors, and connects via PCIe 4. It carries a Thermal Design Power rating of 350W and incorporates an air-water hybrid cooling solution. The card measures 253.5 mm in width and 170.8 mm in height.

Final Verdict

The Colorful iGame GeForce RTX 4080 Super Neptune OC brings together a strong set of specifications anchored by its 16GB of GDDR6X memory with 736 GB/s of bandwidth and a boost clock reaching 2640 MHz, making it a card built for users who place consistent demands on GPU memory and sustained compute throughput. Support for ray tracing, DLSS, ECC memory, and Double Precision Floating Point rounds out a feature set that extends its relevance beyond gaming into more compute-oriented workloads. Prospective users should factor in the 350W TDP and the card's physical dimensions when planning their build, as both require deliberate system configuration. Overall, the Neptune OC variant represents a well-specified option within the RTX 4080 Super segment for those whose use cases align with its thermal and connectivity profile.

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