AMD MI355X vs Nvidia H800

The MI355X is newer, with 3.6x the memory and 4x the bandwidth.

At a glance

Memory

3.6x more on MI355X

MI355X: 288 GB

H800: 80 GB

Memory bandwidth

4x higher on MI355X

MI355X: 8.00 TB/s

H800: 2.00 TB/s

Cheapest on-demand

MI355X: $5.99 /GPU/hr

H800: --

Price comparison

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

Billing	MI355X	H800
On-demand	$8.04 /GPU/hr from $5.99	No on-demand listings
Reserved	-- /GPU/hr from $4.29	No reserved listings
Spot	-- /GPU/hr from $3.44	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. No median for reserved and spot on the MI355X: 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

MI355X vs H800 price history

Weekly median on-demand price per GPU per hour

Last 12 months

Aggregating historical prices...

Specs comparison

Spec	MI355X	H800	Difference
Memory
Capacity	288 GB HBM3e	80 GB HBM2e	3.6x more on MI355X
Bandwidth	8,000 GB/s	2,000 GB/s	4x higher on MI355X
Bus width	8,192-bit	5,120-bit	60% wider on MI355X
Compute · dense
FP4	10,066.3 TFLOPS	Not supported	MI355X only
FP8	5,033.2 TFLOPS	1,513 TFLOPS	3.3x higher on MI355X
FP16 / BF16	2,516.6 TFLOPS	756.5 TFLOPS	3.3x higher on MI355X
INT8	5,033.2 TOPS	1,513 TOPS	3.3x higher on MI355X
FP32	157.3 TFLOPS	51 TFLOPS	3.1x higher on MI355X
FP64	78.6 TFLOPS
Platform
Interconnect	Infinity Fabric 1,075 GB/s	NVLink 400 GB/s	2.7x higher on MI355X
Board power	1,400 W	350 W	4x higher on MI355X
Released	Q2 2025	Q1 2023	2 years newer on MI355X
Precision
Supported formats	FP4FP6FP8FP16BF16FP32FP64INT8	FP8FP16BF16TF32FP32FP64INT8

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

Source: MI355X datasheet .

Where to rent them

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

Provider	MI355X	H800
Daytona USA	$5.99 /GPU/hr On-demand	--
OpenRelay USA	$6.30 /GPU/hr On-demand	--
Oracle Cloud USA	$8.60 /GPU/hr On-demand	--
Cirrascale USA	$4.29 /GPU/hr Reserved	--
Impossible Cloud Germany	$6.13 /GPU/hr Reserved	--
DigitalOcean USA	$4.50 /GPU/hr Spot	--
TensorWave USA	$2.95 /GPU/hr Custom OAM	--
Crusoe USA	On request Custom	--