AMD MI455X vs Nvidia B100

The MI455X is newer, with 2.2x the memory and 2.9x the bandwidth.

At a glance

2.2x more on MI455X

2.9x higher on MI455X

MI455X is not sold on demand

Median price per GPU per hour by billing type, with the cheapest listing under it.

Spec	MI455X	B100	Difference
Memory
Capacity	432 GB HBM4	192 GB HBM3e	2.2x more on MI455X
Bandwidth	23,300 GB/s	8,000 GB/s	2.9x higher on MI455X
Compute · dense
FP4	40,265 TFLOPS	7,000 TFLOPS	5.8x higher on MI455X
FP8	20,133 TFLOPS	3,500 TFLOPS	5.8x higher on MI455X
FP16 / BF16	5,033 TFLOPS	1,750 TFLOPS	2.9x higher on MI455X
INT8	5,033 TOPS	3,500 TOPS	44% higher on MI455X
FP32	315 TFLOPS	60 TFLOPS	5.2x higher on MI455X
FP64	Not supported	30 TFLOPS	B100 only
Platform
Interconnect	Infinity Fabric 3,600 GB/s	NVLink 1,800 GB/s	2x higher on MI455X
Released	Q3 2026	Q4 2024	2 years newer on MI455X
Precision
Supported formats	FP4FP6FP8FP16BF16FP32INT8	FP4FP6FP8FP16BF16TF32FP32FP64INT8

Compute: Vendor peak figures, dense and per GPU. Not measured throughput.

Providers that rent these GPUs, with each one's cheapest rate. No provider we track offers both right now.