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Colorful iGame GeForce RTX 5070 Ultra Z OC specifications and in-depth review

Colorful iGame GeForce RTX 5070 Ultra Z OC

Manufacturer: Colorful

The Colorful iGame GeForce RTX 5070 Ultra Z OC is a graphics card designed around 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, delivering an effective memory speed of 28,000 MHz and a maximum bandwidth of 672 GB/s. The card includes RGB lighting and supports up to four simultaneous displays through a combination of one HDMI 2.1b port and three DisplayPort outputs.

On the performance side, the iGame RTX 5070 Ultra Z OC operates at a base clock of 2,325 MHz with a boost frequency of 2,557 MHz, yielding 31.42 TFLOPS of floating-point throughput and a texture rate of 490.9 GTexels/s. Its 6,144 shading units are complemented by 192 texture mapping units and 80 render output units. The card carries a 250W TDP, connects via PCIe 5.0, and supports DirectX 12 Ultimate, OpenGL 4.6, ray tracing, and DLSS, alongside Intel Resizable BAR.

Pros
  • Supports ray tracing and DLSS, enabling hardware-accelerated rendering and AI-driven upscaling in compatible applications
  • Three DisplayPort outputs alongside an HDMI 2.1b port allow connection of up to four displays simultaneously
  • GDDR7 memory delivers an effective speed of 28,000 MHz and 672 GB/s of bandwidth, enabling fast data throughput for demanding workloads
  • ECC memory support adds a layer of data integrity useful in precision-sensitive computing tasks
  • Double Precision Floating Point (DPFP) support extends usability beyond gaming into professional compute workloads
  • PCIe 5.0 interface ensures the card is compatible with current-generation motherboard platforms
Cons
  • The 192-bit memory bus width is relatively narrow for a card in this class, which can limit memory throughput scaling
  • 12GB of VRAM may feel restrictive for certain high-resolution or memory-intensive workloads
  • No USB-C output is available, limiting connectivity options for displays or devices that rely on that interface
  • Air-water cooling is not supported, restricting thermal management to the standard air cooling configuration only
  • A 250W TDP places notable demands on system power delivery and case airflow
Who is this for?

This card is well-suited to users running ray tracing and DLSS-enabled applications, where hardware acceleration and AI-driven upscaling can be leveraged through the supported DirectX 12 Ultimate and Blackwell architecture. The 672 GB/s memory bandwidth and GDDR7 memory also make it a reasonable fit for compute-oriented workloads that benefit from ECC support and Double Precision Floating Point capability, such as certain scientific or data processing tasks. Users who need to drive up to four displays simultaneously will also find the output configuration practical for multi-monitor setups.

Who is this NOT for?

Users with space-constrained builds may find the 300.5 mm length challenging to accommodate, making this card less suitable for compact or small form factor systems. The 12GB VRAM capacity and 192-bit bus width may also fall short for workloads that are heavily memory-bound, such as very high-resolution rendering or large-dataset GPU computing, where greater memory capacity and a wider bus would be beneficial. Additionally, since the card lacks a USB-C output and any air-water cooling compatibility, it is not a good fit for users who need USB-C display connectivity or plan to integrate a hybrid liquid cooling solution into their setup.

Performance:

GPU clock speed 2325 MHz
GPU turbo 2557 MHz
pixel rate 204.6 GPixel/s
floating-point performance 31.42 TFLOPS
texture rate 490.9 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 the Colorful iGame GeForce RTX 5070 Ultra Z OC centers on a base GPU clock of 2,325 MHz that boosts up to 2,557 MHz, driving a floating-point throughput of 31.42 TFLOPS alongside a pixel rate of 204.6 GPixel/s and a texture rate of 490.9 GTexels/s. Underpinning these figures are 6,144 shading units, 192 texture mapping units, and 80 render output units, while the GPU memory runs at 1,750 MHz. The card also supports Double Precision Floating Point (DPFP), broadening its suitability for workloads that require higher numerical precision.

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 ✓

The Colorful iGame GeForce RTX 5070 Ultra Z OC is equipped with 12GB of GDDR7 VRAM running across a 192-bit memory bus, reaching an effective memory speed of 28,000 MHz and a peak bandwidth of 672 GB/s. ECC memory support is also present, adding a layer of data integrity that can be useful 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 Colorful iGame GeForce RTX 5070 Ultra Z 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. The card handles up to four simultaneous displays through its multi-display technology, and Intel Resizable BAR is supported for improved data throughput between the CPU and GPU. Stereoscopic 3D is also available, and the card features RGB lighting. It does not include Lite Hash Rate (LHR) 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 Colorful iGame GeForce RTX 5070 Ultra Z OC offers a total of four video outputs: one HDMI 2.1b port and three DisplayPort outputs. There are no USB-C, DVI, or mini DisplayPort connections on this card.

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 300.5 mm
height 120 mm

The Colorful iGame GeForce RTX 5070 Ultra Z OC is built on the Blackwell architecture, fabricated on a 5 nm process and integrating 31,100 million transistors. It carries a TDP of 250W and connects via PCIe 5.0, while measuring 300.5 mm in width and 120 mm in height. The card does not include an air-water cooling solution, and its thermal design relies solely on the cooling configuration provided by the manufacturer's standard setup.

Final Verdict

The Colorful iGame GeForce RTX 5070 Ultra Z OC is a capable graphics card built on the Blackwell architecture, bringing together a solid feature set that includes ray tracing, DLSS, DirectX 12 Ultimate support, and a 672 GB/s memory bandwidth backed by GDDR7 VRAM. Its compute credentials — ECC support, Double Precision Floating Point capability, and PCIe 5.0 connectivity — extend its relevance beyond gaming into lighter professional workloads. That said, the 12GB VRAM capacity, 192-bit bus width, and 300.5 mm physical length do introduce practical constraints that users should weigh against their specific needs. Overall, the iGame RTX 5070 Ultra Z OC is a well-specified card for users seeking modern rendering features and multi-display flexibility, provided their system and workload requirements align with its memory and physical footprint limitations.