c4a family
The c4a family has 9 sizes on GCP AlloyDB, from 1 to 72 vCPUs and 8 to 576 GiB of memory. In Iowa, on-demand prices run $0.3114 to $22.418 per hour for PostgreSQL, High availability. It is sold in 43 regions and listed as c4A and Arm.
Sizes and prices in Iowa
| Type | vCPUs | Memory (GiB) | On-demand /hr | 1-yr committed use /hr |
|---|---|---|---|---|
| c4a-highmem-1 | 1 | 8 | $0.3114 | $0.2335 |
| c4a-highmem-2-lssd | 2 | 16 | $0.6227 | $0.467 |
| c4a-highmem-4-lssd | 4 | 32 | $1.245 | $0.9341 |
| c4a-highmem-8-lssd | 8 | 64 | $2.491 | $1.868 |
| c4a-highmem-16-lssd | 16 | 128 | $4.982 | $3.736 |
| c4a-highmem-32-lssd | 32 | 256 | $9.963 | $7.473 |
| c4a-highmem-48-lssd | 48 | 384 | $14.945 | $11.209 |
| c4a-highmem-64-lssd | 64 | 512 | $19.927 | $14.945 |
| c4a-highmem-72-lssd | 72 | 576 | $22.418 | $16.813 |
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Regions
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Prices in USD per hour for PostgreSQL, High availability; reserved prices are 1 year, no upfront. Updated 2026-11-12 from the Google Cloud Billing Catalog API. Compare all GCP AlloyDB machine types.