AMD MI250 vs AMD MI455X

The MI455X is newer, with 3.4x the memory and 7.3x the bandwidth.

At a glance

Memory

3.4x more on MI455X

MI250: 128 GB

MI455X: 432 GB

Memory bandwidth

7.3x higher on MI455X

MI250: 3.20 TB/s

MI455X: 23.30 TB/s

Cheapest on-demand

MI250 and MI455X are not sold on demand

MI250: --

MI455X: --

Price comparison

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

Billing	MI250	MI455X	Difference
Reserved	-- /GPU/hr from $1.30 (12 mo)	No reserved listings

Heads up: A provider's own page may quote a different figure, for example on tax, region or a promotion. A monthly-only plan shows a derived hourly rate. Medians are across providers, one vote each, so a large catalog does not outweigh a small one. No median for reserved on the MI250: we only show one when at least 3 providers list the GPU on that billing type. Verify before provisioning. More on how we price.

Price history

MI250 vs MI455X price history

Weekly median on-demand price per GPU per hour

Last 12 months

Aggregating historical prices...

Specs comparison

Spec	MI250	MI455X	Difference
Memory
Capacity	128 GB HBM2e	432 GB HBM4	3.4x more on MI455X
Bandwidth	3,200 GB/s	23,300 GB/s	7.3x higher on MI455X
Bus width	8,192-bit
Compute · dense
FP4	Not supported	40,265 TFLOPS	MI455X only
FP8	Not supported	20,133 TFLOPS	MI455X only
FP16 / BF16	362.1 TFLOPS	5,033 TFLOPS	14x higher on MI455X
INT8	362.1 TOPS	5,033 TOPS	14x higher on MI455X
FP32	90.5 TFLOPS	315 TFLOPS	3.5x higher on MI455X
FP64	45.3 TFLOPS	Not supported	MI250 only
Platform
Interconnect	Infinity Fabric 400 GB/s	Infinity Fabric 3,600 GB/s	9x higher on MI455X
Released	Q4 2021	Q3 2026	5 years newer on MI455X
Precision
Supported formats	FP16BF16FP32FP64INT4INT8	FP4FP6FP8FP16BF16FP32INT8

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

Source: MI250 datasheet and MI455X datasheet.

Where to rent them

Providers that rent these GPUs, with each one's cheapest rate. Providers that rent both are listed first.

Provider	MI250	MI455X
Cirrascale USA	$1.30 /GPU/hr Reserved	On request Custom
Azure USA	--	On request Custom
Oracle Cloud USA	--	On request Custom
TensorWave USA	--	On request Custom
Vultr USA	--	On request Custom