NVIDIA RTX Spark (MediaTek AHJ11488B) vs AMD Radeon Instinct MI455X

GPU · Specs Compare

GPU NVIDIA RTX Spark (MediaTek AHJ11488B) NVIDIA · 2026-01

GPU AMD Radeon Instinct MI455X AMD · 2026-07

General Parameters

Release Date

Jan 2026

—

Type

Laptop

—

Core Architecture

N1X

—

Integrated Graphics

GB20B "Blackwell"

—

Generation

Spark (GB10)

—

Package

Manufacturing Process

3 nm

—

Power Consumption

64 W

—

Foundry

TSMC

—

Die Size

208 mm²

—

Package

FC-BGA

—

CPU Performance

Performance Core Base Frequency

2.8 GHz

—

Performance Core Turbo Frequency

4 GHz

—

Efficiency Core Base Frequency

1500 MHz

—

Efficiency Core Turbo Frequency

2.8 GHz

—

Total Core Count

—

Total Thread Count

—

Bus Frequency

100 MHz

—

Multiplier

28.0

—

L1 Cache

128 KB per core

—

L2 Cache

2 MB per core

—

L3 Cache

8 MB shared

—

Unlocked Multiplier

—

SMP

—

Memory Parameters

Memory Types

LPDDR5X-8533

—

Max Memory Channels

—

Max Memory Bandwidth

273.1 GB/s

—

ECC Memory Support

—

Miscellaneous

PCIe Version

—

Graphics Card

Release Date

—

Jul 2026

Generation

—

Radeon Instinct

Type

—

Desktop

Bus Interface

—

PCIe 6.0 x16

Clock Speeds

Base Clock

—

1000 MHz

Boost Clock

—

2400 MHz

Memory Clock

—

1900 MHz

Memory

Memory Size

—

432GB

Memory Type

—

HBM4

Memory Bus

—

24576bit

Bandwidth

—

23.3TB/s

Render Config

Compute Units

—

256

Shading Units

—

32768

TMUs

—

1024

ROPs

—

L1 Cache

—

32 KB (per CU)

L2 Cache

—

192 MB

Theoretical Performance

Pixel Rate

—

0 MPixel/s

Texture Rate

—

2457.6 GTexel/s

FP16 (half)

—

157.3 TFLOPS

FP32 (float)

—

157.3 TFLOPS

FP64 (double)

—

2.458 TFLOPS

Graphics Processor

GPU Name

—

MI450 256CU

Architecture

—

CDNA 5.0

Foundry

—

TSMC

Process Size

—

2 nm

Transistors

—

320 billion

Die Size

—

Unknown

Board Design

TDP

—

2300W

Suggested PSU

—

2700 W

Outputs

—

No outputs

Power Connectors

—

None

Graphics Features

DirectX

—

N/A

OpenGL

—

N/A

OpenCL

—

3.0

Vulkan

—

N/A

Shader Model

—

N/A

▲ Specs Compare Data sourced from official specifications and benchmark tests.