AMD MI325X vs AMD MI455X

The MI455X is newer, with 69% more memory and 3.9x the bandwidth.

At a glance

Memory

69% more on MI455X

MI325X: 256 GB

MI455X: 432 GB

Memory bandwidth

3.9x higher on MI455X

MI325X: 6.00 TB/s

MI455X: 23.30 TB/s

Cheapest on-demand

MI455X is not sold on demand

MI325X: $2.25 /GPU/hr

MI455X: --

Price comparison

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

Billing	MI325X	MI455X
On-demand	$3.06 /GPU/hr from $2.25	No on-demand listings
Reserved	$1.95 /GPU/hr from $1.48 (12 mo)	No reserved listings
Spot	Sold out	No spot 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. Verify before provisioning. More on how we price.

Price history

MI325X vs MI455X price history

Weekly median on-demand price per GPU per hour

Last 12 months

Aggregating historical prices...

Specs comparison

Spec	MI325X	MI455X	Difference
Memory
Capacity	256 GB HBM3e	432 GB HBM4	69% more on MI455X
Bandwidth	6,000 GB/s	23,300 GB/s	3.9x higher on MI455X
Bus width	8,192-bit
Compute · dense
FP4	Not supported	40,265 TFLOPS	MI455X only
FP8	2,614.9 TFLOPS	20,133 TFLOPS	7.7x higher on MI455X
FP16 / BF16	1,307.4 TFLOPS	5,033 TFLOPS	3.8x higher on MI455X
INT8	2,614.9 TOPS	5,033 TOPS	92% higher on MI455X
FP32	163.4 TFLOPS	315 TFLOPS	93% higher on MI455X
FP64	81.7 TFLOPS	Not supported	MI325X only
Platform
Interconnect	Infinity Fabric 896 GB/s	Infinity Fabric 3,600 GB/s	4x higher on MI455X
Released	Q4 2024	Q3 2026	2 years newer on MI455X
Precision
Supported formats	FP8FP16BF16TF32FP32FP64INT8	FP4FP6FP8FP16BF16FP32INT8

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

Source: MI325X 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	MI325X	MI455X
TensorWave USA	$2.25 /GPU/hr Custom OAM	On request Custom
Vultr USA	$2.00 /GPU/hr Spot	On request Custom
Bentaus USA	$2.25 /GPU/hr On-demand	--
Cyfuture AI India	$3.01 /GPU/hr On-demand	--
DigitalOcean USA	$3.80 /GPU/hr On-demand	--
Azure USA	--	On request Custom
Cirrascale USA	--	On request Custom
Oracle Cloud USA	--	On request Custom