GPU Comparison

A

AMD

RADEON

AMD Instinct MI455X

CORE STATE MI450 256CU

VRAM 432 GB

CLOCK SPEED 2400 MHz

TDP 2300 W

BUS WIDTH 24576 bit

ARCHITECTURE CDNA 5.0

nm

PROCESS 2 nm

LAUNCH DATE 2026

VS

NVIDIA

GEFORCE

GeForce RTX 5070

CORE STATE GB205

VRAM 12 GB

CLOCK SPEED 2512 MHz

TDP 250 W

BUS WIDTH 192 bit

ARCHITECTURE Blackwell 2.0

nm

PROCESS 5 nm

LAUNCH DATE 2025

PERFORMANCE BENCHMARKS

3dmark_3dmark_steel_nomad_dx12

N/A

5,077

geekbench_opencl

N/A

172,660

geekbench_vulkan

N/A

178,923

passmark_directx_10

N/A

180

passmark_directx_11

N/A

277

passmark_directx_12

N/A

108

passmark_directx_9

N/A

320

passmark_g2d

N/A

1,305

passmark_g3d

N/A

29,137

passmark_gpu_compute

N/A

15,787

DETAILED SPECIFICATIONS

SPECIFICATION

Instinct MI455X

RTX 5070

Core Specs

Shading Units

32,768

6,144 -81.3%

Shaders

32,768

6,144 -81.3%

TMUs

1,024

192 -81.3%

ROPs

0

80 +∞%

Compute Units

256

—

SM Count

—

48

Clocks

Base Clock

1000 MHz

2325 MHz

Boost Clock

2400 MHz

2512 MHz

Memory Clock

1900 MHz 7.6 Gbps effective

1750 MHz 28 Gbps effective

Memory

Memory Size

432 GB

12 GB

VRAM (MB)

442,368

12,288 -97.2%

Memory Type

HBM4

GDDR7

Memory Bus

24576 bit

192 bit

Bandwidth

23.3 TB/s

672.0 GB/s

Cache

L1 Cache

32 KB (per CU)

128 KB (per SM)

L2 Cache

192 MB

48 MB

Performance

Pixel Rate

0 MPixel/s

201.0 GPixel/s

Texture Rate

2,457.6 GTexel/s

482.3 GTexel/s

FP32 (TFLOPS)

157.3 TFLOPS

30.87 TFLOPS

FP64 (TFLOPS)

2.458 TFLOPS (1:64)

482.3 GFLOPS (1:64)

FP16 (TFLOPS)

157.3 TFLOPS (1:1)

30.87 TFLOPS (1:1)

AI/RT

RT Cores

—

48

Tensor Cores

—

192

Matrix Cores

1,024

—

Power

TDP

2300 W

250 W

TDP (W)

2,300

250 -89.1%

Suggested PSU

2700 W

600 W

Power Connectors

None

1x 16-pin

Architecture

Architecture

CDNA 5.0

Blackwell 2.0

GPU Name

MI450 256CU

GB205

Generation

Instinct (MIx)

GeForce 50

Process Size

2 nm

5 nm

Transistors

320,000 million

31,100 million

Die Size

2990 mm²

263 mm²

Foundry

TSMC

TSMC

Density

107.0M / mm²

118.3M / mm²

API Support

DirectX

—

12 Ultimate (12_2)

OpenGL

—

4.6

Vulkan

—

1.4

OpenCL

3.0

3.0

CUDA

—

12.0

Shader Model

—

6.9

Physical

Slot Width

EAM Module

Dual-slot

Length

—

245 mm 9.6 inches

Height

—

115 mm 4.5 inches

Outputs

No outputs

1x HDMI 2.1b3x DisplayPort 2.1b

Bus Interface

PCIe 6.0 x16

PCIe 5.0 x16

Other

Launch Price

—

549 USD

Production

—

Active

Predecessor

Radeon Instinct

GeForce 40

Successor

—

GeForce 60

View Instinct MI455X Details View GeForce RTX 5070 Details