Nvidia GB300 vs Nvidia H800

The GB300 is newer, with 3.6x the memory and 4x the bandwidth.

At a glance

Memory

3.6x more on GB300

GB300: 288 GB

H800: 80 GB

Memory bandwidth

4x higher on GB300

GB300: 8.00 TB/s

H800: 2.00 TB/s

Cheapest on-demand

GB300: $18.00 /GPU/hr

H800: --

Price comparison

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

Billing	GB300	H800
On-demand	-- /GPU/hr from $18.00	No on-demand listings
Reserved	On request	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. No median for on-demand on the GB300: 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

GB300 vs H800 price history

Weekly median on-demand price per GPU per hour

Last 2 months

Aggregating historical prices...

Specs comparison

Spec	GB300	H800	Difference
Memory
Capacity	288 GB HBM3e	80 GB HBM2e	3.6x more on GB300
Bandwidth	8,000 GB/s	2,000 GB/s	4x higher on GB300
Bus width	8,192-bit	5,120-bit	60% wider on GB300
Compute · dense
FP4	15,000 TFLOPS	Not supported	GB300 only
FP8	5,000 TFLOPS	1,513 TFLOPS	3.3x higher on GB300
FP16 / BF16	2,500 TFLOPS	756.5 TFLOPS	3.3x higher on GB300
INT8	165 TOPS	1,513 TOPS	9.2x higher on H800
FP32	80 TFLOPS	51 TFLOPS	57% higher on GB300
FP64	1.3 TFLOPS
Platform
Interconnect	NVLink 1,800 GB/s	NVLink 400 GB/s	4.5x higher on GB300
Board power	1,400 W	350 W	4x higher on GB300
Released	Q1 2025	Q1 2023	2 years newer on GB300
Precision
Supported formats	FP4FP6FP8FP16BF16TF32FP32FP64INT8	FP8FP16BF16TF32FP32FP64INT8

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

Source: GB300 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	GB300	H800
Oracle Cloud USA	$18.00 /GPU/hr On-demand NVL	--
AWS USA	On request Reserved	--
CoreWeave USA	On request Custom NVL	--
Gcore Luxembourg	On request Custom NVL	--
Nebius Netherlands	On request Custom NVL	--
Together AI USA	On request Custom NVL	--
Verda Finland	$9.06 /GPU/hr On-demand SXM	--