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MI355X vs K620

AMD MI355X vs Nvidia K620

A data center GPU against a workstation card, one CDNA 4 and one Maxwell: 288 GB HBM3e against 2 GB DDR3, 276x the memory bandwidth on the MI355X, and Infinity Fabric 1,075 GB/s on the MI355X where the K620 is PCIe only.

At a glance

Memory

MI355X: 288 GB
K620: 2 GB

144x more on MI355X

Memory bandwidth

MI355X: 8,000 GB/s
K620: 29 GB/s

276x higher on MI355X

Cheapest on-demand

MI355X: $8.60 /GPU/hr
K620: --

Price comparison

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

Billing	MI355X	K620	Difference
On-demand	-- /GPU/hr from $8.60	No on-demand listings
Spot	-- /GPU/hr from $4.50	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 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 K620 price history

Weekly median on-demand price per GPU per hour

Last 16 months

Aggregating historical prices...

Specs comparison

Spec	MI355X	K620	Difference
Memory
Capacity	288 GB HBM3e	2 GB DDR3	144x more on MI355X
Bandwidth	8,000 GB/s	29 GB/s	276x higher on MI355X
Bus width	8,192-bit	128-bit	64x wider on MI355X
Compute · dense
FP4	10,066.3 TFLOPS	Not supported	MI355X only
FP8	5,033.2 TFLOPS	Not supported	MI355X only
FP16 / BF16	2,516.6 TFLOPS	Not supported	MI355X only
INT8	5,033.2 TOPS	Not supported	MI355X only
FP32	157.3 TFLOPS	0.9 TFLOPS	183x higher on MI355X
FP64	78.6 TFLOPS	Not supported	MI355X only
Platform
Interconnect	Infinity Fabric 1,075 GB/s	PCIe only	Infinity Fabric on MI355X only
Board power	1,400 W	45 W	31x higher on MI355X
Released	Q2 2025	Q3 2014	11 years newer on MI355X
Precision
Supported formats	FP4FP6FP8FP16BF16FP32FP64INT8	FP32