Nvidia GB300 vs Nvidia P40

The GB300 is newer, with 12x the memory and 23x the bandwidth.

At a glance

Memory

12x more on GB300

GB300: 288 GB

P40: 24 GB

Memory bandwidth

23x higher on GB300

GB300: 8,000 GB/s

P40: 346 GB/s

Cheapest on-demand

GB300: $18.00 /GPU/hr

P40: --

Price comparison

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

Billing	GB300	P40
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 P40 price history

Weekly median on-demand price per GPU per hour

Last 13 months

Aggregating historical prices...

Specs comparison

Spec	GB300	P40	Difference
Memory
Capacity	288 GB HBM3e	24 GB GDDR5	12x more on GB300
Bandwidth	8,000 GB/s	346 GB/s	23x higher on GB300
Bus width	8,192-bit	384-bit	21x wider on GB300
Compute · dense
FP4	15,000 TFLOPS	Not supported	GB300 only
FP8	5,000 TFLOPS	Not supported	GB300 only
FP16 / BF16	2,500 TFLOPS
INT8	165 TOPS	47 TOPS	3.5x higher on GB300
FP32	80 TFLOPS	12 TFLOPS	6.7x higher on GB300
FP64	1.3 TFLOPS	Not supported	GB300 only
Platform
Interconnect	NVLink 1,800 GB/s	PCIe only	NVLink on GB300 only
Board power	1,400 W	250 W	5.6x higher on GB300
Released	Q1 2025	Q3 2016	8 years newer on GB300
Precision
Supported formats	FP4FP6FP8FP16BF16TF32FP32FP64INT8	FP16FP32INT8

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

Source: GB300 datasheet and P40 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	P40
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	$9.15 /GPU/hr On-demand SXM	--