AMD MI355X vs Nvidia B300

Both have 288 GB of memory and the same bandwidth. The MI355X is cheaper right now.

At a glance

Memory

Identical

MI355X: 288 GB

B300: 288 GB

Memory bandwidth

Identical

MI355X: 8.00 TB/s

B300: 8.00 TB/s

Cheapest on-demand

8% cheaper on MI355X

MI355X: $5.99 /GPU/hr

B300: $6.50 /GPU/hr

Price comparison

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

Billing	MI355X	B300
On-demand	-- /GPU/hr from $5.99	$7.89 /GPU/hr from $6.50
Reserved	No reserved listings	$5.84 /GPU/hr from $4.25
Spot	-- /GPU/hr from $3.44	$4.39 /GPU/hr from $2.99

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 on-demand 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 B300 price history

Weekly median on-demand price per GPU per hour

Last 11 months

Aggregating historical prices...

Specs comparison

Spec	MI355X	B300	Difference
Memory
Capacity	288 GB HBM3e	288 GB HBM3e	Identical
Bandwidth	8,000 GB/s	8,000 GB/s	Identical
Bus width	8,192-bit	8,192-bit	Identical
Compute · dense
FP4	10,066.3 TFLOPS	14,000 TFLOPS	39% higher on B300
FP8	5,033.2 TFLOPS	4,500 TFLOPS	12% higher on MI355X
FP16 / BF16	2,516.6 TFLOPS	2,250 TFLOPS	12% higher on MI355X
INT8	5,033.2 TOPS	153.5 TOPS	33x higher on MI355X
FP32	157.3 TFLOPS	75 TFLOPS	2.1x higher on MI355X
FP64	78.6 TFLOPS	1.2 TFLOPS	66x higher on MI355X
Platform
Interconnect	Infinity Fabric 1,075 GB/s	NVLink 1,800 GB/s	67% higher on B300
Board power	1,400 W	1,100 W	27% higher on MI355X
Released	Q2 2025	Q1 2025
Precision
Supported formats	FP4FP6FP8FP16BF16FP32FP64INT8	FP4FP6FP8FP16BF16TF32FP32FP64INT8

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

Source: MI355X datasheet and B300 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	B300
Daytona USA	$5.99 /GPU/hr On-demand	--
Oracle Cloud USA	$8.60 /GPU/hr On-demand	--
DigitalOcean USA	$4.50 /GPU/hr Spot	--
TensorWave USA	$2.95 /GPU/hr Custom OAM	--
Vultr USA	$2.59 /GPU/hr Spot	--
GPU.ai UAE	--	$7.89 /GPU/hr On-demand SXM
Runpod USA	--	$7.89 /GPU/hr On-demand SXM
Lium Distributed	--	$8.00 /GPU/hr On-demand SXM
Vast.ai USA	--	$11.48 /GPU/hr On-demand
EmpirioLabs AI USA	--	$16.00 /GPU/hr On-demand
Lyceum Germany	--	$2.99 /GPU/hr Spot
Verda Finland	--	$3.94 /GPU/hr Spot SXM
GPUaaS USA	--	On request Custom SXM