NVIDIA GeForce RTX 5070 vs AMD Radeon Instinct MI455X
GPU · Specs Compare
Graphics Card
Release Date
Mar 2025
Jul 2026
Generation
GeForce 50
Radeon Instinct
Type
Desktop
Desktop
Bus Interface
PCIe 5.0 x16
PCIe 6.0 x16
Clock Speeds
Base Clock
2325 MHz
1000 MHz
Boost Clock
2512 MHz
2400 MHz
Memory Clock
1750 MHz
1900 MHz
Memory
Memory Size
12GB
432GB
Memory Type
GDDR7
HBM4
Memory Bus
192bit
24576bit
Bandwidth
672.0GB/s
23.3TB/s
Render Config
SM Count
48
—
Shading Units
6144
32768
TMUs
192
1024
ROPs
80
0
Tensor Cores
192
—
RT Cores
48
—
L1 Cache
128 KB (per SM)
32 KB (per CU)
L2 Cache
48 MB
192 MB
Compute Units
—
256
Theoretical Performance
Pixel Rate
201.0 GPixel/s
0 MPixel/s
Texture Rate
482.3 GTexel/s
2457.6 GTexel/s
FP16 (half)
30.87 TFLOPS
157.3 TFLOPS
FP32 (float)
30.87 TFLOPS
157.3 TFLOPS
FP64 (double)
482.3 GFLOPS
2.458 TFLOPS
Graphics Processor
GPU Name
GB205
MI450 256CU
GPU Variant
GB205-300-A1
—
Architecture
Blackwell 2.0
CDNA 5.0
Foundry
TSMC
TSMC
Process Size
5 nm
2 nm
Transistors
31.1 billion
320 billion
Die Size
263 mm²
Unknown
Board Design
TDP
250W
2300W
Suggested PSU
600 W
2700 W
Outputs
1x HDMI 2.1b3x DisplayPort 2.1b
No outputs
Power Connectors
1x 16-pin
None
Graphics Features
DirectX
12 Ultimate (12_2)
N/A
OpenGL
4.6
N/A
OpenCL
3.0
3.0
Vulkan
1.4
N/A
CUDA
12.0
—
Shader Model
6.8
N/A
Benchmark
3DMark Time Spy
22,544
—
3DMark Time Spy Extreme
10,789
—
3DMark Speed Way
5,896
—
Blender
6,218
—
▲ Specs Compare
Data sourced from official specifications and benchmark tests.