How much does an idle p3.2xlarge cost on AWS?
A p3.2xlarge billed on-demand and left running around the clock costs about $2,234/mo at its cheapest listed region (us-east-1). Scheduling it off outside business hours cuts that to roughly $665/mo — a $1,569/mo saving.
Cheapest on-demand
$3.0600/hr
us-east-1
Running 24/7
$2,234/mo
730-hour month
Business-hours savings
$1,569/mo
70% off the 24/7 bill
Price by region
| Region | Hourly (on-demand) | Spot (typical) | ≈ Monthly (24/7) |
|---|---|---|---|
| us-east-1 Cheapest | $3.0600/hr | $0.4284/hr | ≈ $2,234/mo |
| us-east-2 | $3.0600/hr | $0.4896/hr | ≈ $2,234/mo |
| us-west-2 | $3.0600/hr | $0.5202/hr | ≈ $2,234/mo |
| eu-west-1 | $3.3050/hr | $0.8263/hr | ≈ $2,413/mo |
| eu-central-1 | $3.8230/hr | $0.9557/hr | ≈ $2,791/mo |
| ap-northeast-1 | $4.1940/hr | $1.8454/hr | ≈ $3,062/mo |
| ap-southeast-1 | $4.2340/hr | $0.9738/hr | ≈ $3,091/mo |
| ap-southeast-2 | $4.2340/hr | $0.9738/hr | ≈ $3,091/mo |
What a schedule saves
| Schedule | Monthly cost | Savings vs 24/7 |
|---|---|---|
| Running 24/7 | $2,234/mo | baseline |
| Weekdays only (off on weekends) | $1,596/mo | -$638/mo (29%) |
| Business hours only (10×5) | $665/mo | -$1,569/mo (70%) |
Assumes a 730-hour month at on-demand list price. Actual savings depend on when the instance is actually used.
About the p3 family
P3 carries NVIDIA V100 GPUs built for serious distributed training and HPC — the kind of instance a team rents by the hour for a training run. The waste here is subtle: the run finishes, everyone moves on, and the multi-GPU box keeps billing at anywhere from three to twenty-five dollars an hour depending on size because nobody circled back to stop it.
Regional pricing varies: p3.2xlarge runs $3.0600/hr in us-east-1, the cheapest region priced here, versus $4.2340/hr in ap-southeast-1, the priciest — a 28% spread across regions for the identical instance type.
The next size up in the same family, p3.8xlarge (32 vCPU / 244 GB RAM), costs about $8,935/mo running 24/7 at its cheapest region — roughly 300% more than p3.2xlarge's ~$2,234/mo — for 4x the vCPU. It also steps up to 4 GPUs from 1.
Common questions
How much does an idle p3.2xlarge cost per month?
At the cheapest listed region (us-east-1), a p3.2xlarge costs $3.0600/hr, or about $2,234/mo if it runs 24/7. That's the on-demand list price — an idle instance costs exactly the same as a busy one, since cloud billing doesn't know the difference.
How much can I save by scheduling it off outside work hours?
Restricting it to business hours only (10×5) saves about $1,569/mo (70%) versus running 24/7. A lighter schedule — on around the clock on weekdays, off on weekends — still saves about $638/mo (29%).
Is p3 still a reasonable choice against newer GPU families?
For new training work, mostly no — newer accelerators deliver more per dollar. p3 fleets persist because of CUDA version pins, reserved-instance commitments, and inertia. If one is still in your account, check its utilization first: a legacy GPU box idling between occasional runs is the most expensive kind of nostalgia.
Other p3 sizes
Stop paying for idle AWS servers
Idlefy runs a free audit of your fleet, then flips dev servers to stopped-by-default: lease one when you need it, and
when the lease ends it shuts itself off — stop, not terminate, persistent disks intact. Timers are set by your team, never
guessed, and Idlefy only manages instances tagged idlefy=enabled — on AWS that boundary is enforced by the IAM policy itself.
Prices are on-demand list price for Linux instances and exclude storage, network, data transfer, and any negotiated or volume discounts. Actual bills vary by usage and account-level pricing. Prices as of 2026-07-20. Spot figures are indicative — AWS values are derived from AWS's published typical savings vs on-demand for the region; GCP values are the listed Spot price. Spot capacity can be reclaimed by the provider. Stopping preserves EBS and persistent-disk volumes; data on local instance-store or local-SSD drives does not survive a stop.