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Maxsun GeForce RTX 4070 Super iCraft OC Limited specifications and in-depth review

Maxsun GeForce RTX 4070 Super iCraft OC Limited

Manufacturer: Maxsun

The Maxsun GeForce RTX 4070 Super iCraft OC Limited is a graphics card based on NVIDIA's Ada Lovelace architecture, manufactured on a 5 nm process with 35,800 million transistors. It ships with 12GB of GDDR6X memory across a 192-bit bus, delivering a maximum memory bandwidth of 504.2 GB/s at an effective speed of 21,000 MHz. RGB lighting and support for up to four simultaneous displays round out its feature set.

The card operates at a base clock of 1980 MHz, reaching a boost frequency of 2685 MHz, which translates to 38.49 TFLOPS of floating-point performance, a pixel rate of 214.8 GPixel/s, and a texture rate of 601.4 GTexels/s. Its 7,168 shading units are complemented by 224 texture mapping units and 80 render output units. On the connectivity side, it provides three DisplayPort outputs and one HDMI 2.1a port, supports DirectX 12 Ultimate, OpenGL 4.5, and OpenCL 3, and includes ray tracing and DLSS support. The card has a rated TDP of 220W, measures 336 mm in length and 137 mm in height, and connects via PCIe 4.0.

Pros
  • Supports up to four simultaneous displays, making it practical for multi-monitor setups
  • Includes ray tracing and DLSS support, enabling more advanced rendering options in compatible applications
  • ECC memory support adds a layer of data integrity useful for precision-sensitive workloads
  • The 12GB of GDDR6X VRAM with a 504.2 GB/s bandwidth ceiling gives the card headroom for memory-intensive tasks
  • Double Precision Floating Point (DPFP) support broadens usability beyond typical consumer graphics workloads
  • RGB lighting is built in, offering visual customization without requiring additional hardware
Cons
  • The 192-bit memory bus width is narrower than what some cards in this segment offer, limiting theoretical memory throughput scaling
  • At 336 mm in length, the card requires a sufficiently spacious case and may not fit in compact or mid-tower builds with tight clearance
  • The 220W TDP demands a capable power supply and adequate case airflow, with no air-water cooling option included
  • There are no USB-C, DVI, or mini DisplayPort outputs, which may require adapters for certain display configurations
  • XeSS (XMX) is not supported, limiting compatibility with that particular upscaling technology
Who is this for?

This card is well-suited to users who work across multi-monitor setups, given its support for up to four simultaneous displays via three DisplayPort outputs and one HDMI 2.1a port. Those engaged in compute-adjacent tasks will also find value here, as Double Precision Floating Point support and ECC memory together provide a degree of numerical reliability uncommon in purely consumer-oriented cards. Additionally, users who run workloads that benefit from ray tracing and DLSS will find both features available out of the box, and the 12GB of GDDR6X VRAM with a 504.2 GB/s bandwidth ceiling gives enough headroom for memory-intensive rendering and content creation pipelines.

Who is this NOT for?

Users who require a compact build will likely find this card impractical, as its 336 mm length demands a full-size case with adequate clearance. The 220W TDP also makes it a poor fit for systems with limited power delivery or restricted airflow, and the absence of any air-water cooling option means thermal management relies entirely on the surrounding case environment. Those who depend on USB-C display output or DVI connectivity will not find those ports here, potentially requiring adapters that may not suit every setup. Users specifically invested in the XeSS upscaling ecosystem will also need to look elsewhere, as that feature is not supported on this card.

Performance:

GPU clock speed 1980 MHz
GPU turbo 2685 MHz
pixel rate 214.8 GPixel/s
floating-point performance 38.49 TFLOPS
texture rate 601.4 GTexels/s
GPU memory speed 1313 MHz
shading units 7168
texture mapping units (TMUs) 224
render output units (ROPs) 80
Has Double Precision Floating Point (DPFP) ✓

The Performance section of this card centers on a base GPU clock of 1980 MHz that boosts up to 2685 MHz, enabling a floating-point throughput of 38.49 TFLOPS alongside a pixel rate of 214.8 GPixel/s and a texture rate of 601.4 GTexels/s. Underpinning these figures are 7,168 shading units, 224 texture mapping units, and 80 render output units, while the GPU memory runs at 1313 MHz. The card also supports Double Precision Floating Point (DPFP), broadening its suitability for workloads that require higher numerical precision.

Memory:

effective memory speed 21000 MHz
maximum memory bandwidth 504.2 GB/s
VRAM 12GB
GDDR version GDDR6X
memory bus width 192-bit
Supports ECC memory ✓

This card is equipped with 12GB of GDDR6X VRAM running at an effective speed of 21,000 MHz across a 192-bit memory bus, resulting in a maximum memory bandwidth of 504.2 GB/s. ECC memory support is also included, adding a layer of data integrity that can be relevant for precision-sensitive workloads.

Features:

DirectX version DirectX 12 Ultimate
OpenGL version 4.5
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

On the software and feature side, the card supports DirectX 12 Ultimate, OpenGL 4.5, and OpenCL 3, covering a broad range of graphics and compute workloads. Ray tracing and DLSS are both supported, while XeSS (XMX) is not. It is compatible with Intel Resizable BAR and does not include LHR. Multi-display technology is supported with a maximum of four simultaneous outputs, stereoscopic 3D is also available, and the card features RGB lighting. XeSS (XMX) support is absent from this model.

Ports:

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

The card's output configuration consists of three DisplayPort outputs and a single HDMI 2.1a port, providing four video outputs in total. There are no USB-C, DVI, or mini DisplayPort connections included on this model.

General info:

GPU architecture Ada Lovelace
Thermal Design Power (TDP) 220W
PCI Express (PCIe) version 4
semiconductor size 5 nm
number of transistors 35800 million
Has air-water cooling ✕
width 336 mm
height 137 mm

Built on the Ada Lovelace architecture and fabricated using a 5 nm process, the GPU integrates 35,800 million transistors and connects to the system via PCIe 4.0. It carries a Thermal Design Power of 220W and does not feature air-water cooling. Physically, the card measures 336 mm in width and 137 mm in height.

Final Verdict

The Maxsun GeForce RTX 4070 Super iCraft OC Limited is a well-specified graphics card that covers a meaningful range of use cases, from multi-display workstation setups to rendering tasks that benefit from ray tracing, DLSS, and ECC memory support. Its 12GB of GDDR6X VRAM paired with a 504.2 GB/s memory bandwidth gives it genuine headroom for memory-intensive workflows, while Double Precision Floating Point support extends its relevance beyond purely consumer applications. That said, its 336 mm length and 220W TDP mean it is best suited to well-ventilated, full-size systems with adequate power headroom, and those reliant on USB-C outputs or XeSS upscaling will need to account for those absences. Taken as a whole, this card represents a targeted option for users whose workloads align with its particular strengths, provided the physical and power requirements of their system are a match.