c4-highmem-48-lssdvsc4a-highmem-48-lssd
c4a-highmem-48-lssd is 11% cheaper than c4-highmem-48-lssd on demand in Iowa, saving $1,353.93 a month. They use different processor architectures (x86_64 and arm64), so software built for one may need rebuilding to run on the other.
| At a glance | c4-highmem-48-lssd | c4a-highmem-48-lssd |
|---|---|---|
| On-demand | $16.80/hr | $14.945/hr11% less |
| Lowest rate | $8.064/hr3-yr committed use, no upfront | $7.174/hr11% less3-yr committed use, no upfront |
| Size | 48 vCPUs, 384 GiB | 48 vCPUs, 384 GiB |
| Architecture | x86_64 | arm64 |
Prices in Iowa
“Off” is the discount against each type’s own on-demand price. PostgreSQL, USD per hour.
| Option | c4-highmem-48-lssd | c4a-highmem-48-lssd | c4a-highmem-48-lssd vs c4-highmem-48-lssd |
|---|---|---|---|
| On-demandPay by the hour | $16.80 | $14.945 | ▼ 11% |
| 1-yr committed useNo upfront | 25% off$12.60 | 25% off$11.209 | ▼ 11% |
| 3-yr committed useNo upfront | 52% off$8.064 | 52% off$7.174 | ▼ 11% |
Key differences
The biggest lead each one has.
Where c4-highmem-48-lssd leads
No clear lead on the measures we compare.
Where c4a-highmem-48-lssd leads
On-demand price$14.945 vs $16.80 per hour
11% cheaperSpecs
4 of 8 specs differ. Those are in bold.
| Compute1 of 2 differ | c4-highmem-48-lssd | c4a-highmem-48-lssd |
|---|---|---|
| vCPUs | 48 | 48 |
| Architecture | x86_64 | arm64 |
| MemoryAll 1 match | c4-highmem-48-lssd | c4a-highmem-48-lssd |
|---|---|---|
| Memory (GiB) | 384 | 384 |
| StorageAll 1 match | c4-highmem-48-lssd | c4a-highmem-48-lssd |
|---|---|---|
| Storage | Cluster storage + local SSD cache | Cluster storage + local SSD cache |
| Instance details2 of 2 differ | c4-highmem-48-lssd | c4a-highmem-48-lssd |
|---|---|---|
| Family | c4 | c4a |
| Category | C4 | C4A |
| Other1 of 2 differ | c4-highmem-48-lssd | c4a-highmem-48-lssd |
|---|---|---|
| Series | C4 | C4A |
| Specs source | AlloyDB machine type docs | AlloyDB machine type docs |
On-demand prices by region
Cheapest for c4-highmem-48-lssd first. PostgreSQL, USD per hour.
| Region | c4-highmem-48-lssd | c4a-highmem-48-lssd | Difference |
|---|---|---|---|
| Columbusus-east5 | $16.80 | $14.945 | ▼ 11% |
| IowaUsed in summaryus-central1 | $16.80 | $14.945 | ▼ 11% |
| Northern Virginiaus-east4 | $16.80 | $14.945 | ▼ 11% |
| Oregonus-west1 | $16.80 | $14.945 | ▼ 11% |
| Mumbaiasia-south1 | $17.472 | $15.544 | ▼ 11% |
| Bangkokasia-southeast3 | $17.64 | $15.693 | ▼ 11% |
| Netherlandseurope-west4 | $17.64 | $15.692 | ▼ 11% |
| Stockholmeurope-north2 | $17.64 | $15.692 | ▼ 11% |
| Mexiconorthamerica-south1 | $18.312 | $16.292 | ▼ 11% |
| Belgiumeurope-west1 | $18.48 | $16.44 | ▼ 11% |
| Finlandeurope-north1 | $18.48 | $16.44 | ▼ 11% |
| Johannesburgafrica-south1 | $18.48 | $16.44 | ▼ 11% |
| Montréalnorthamerica-northeast1 | $18.48 | $16.44 | ▼ 11% |
| Tel Avivme-west1 | $18.48 | $16.44 | ▼ 11% |
| Torontonorthamerica-northeast2 | $18.48 | $16.44 | ▼ 11% |
| Las Vegasus-west4 | $18.984 | $16.891 | ▼ 11% |
| South Carolinaus-east1 | $18.984 | $16.891 | ▼ 11% |
| Londoneurope-west2 | $19.152 | $17.039 | ▼ 11% |
| Milaneurope-west8 | $19.488 | $17.335 | ▼ 11% |
| Pariseurope-west9 | $19.488 | $17.335 | ▼ 11% |
| Taiwanasia-east1 | $19.488 | $17.335 | ▼ 11% |
| Dallasus-south1 | $19.824 | $17.638 | ▼ 11% |
| Frankfurteurope-west3 | $19.824 | $17.638 | ▼ 11% |
| Madrideurope-southwest1 | $19.824 | $17.638 | ▼ 11% |
| Turineurope-west12 | $19.824 | $17.638 | ▼ 11% |
| Delhiasia-south2 | $20.16 | $17.935 | ▼ 11% |
| Los Angelesus-west2 | $20.16 | $17.935 | ▼ 11% |
| Salt Lake Cityus-west3 | $20.16 | $17.935 | ▼ 11% |
| Dohame-central1 | $20.496 | $18.16 | ▼ 11% |
| Singaporeasia-southeast1 | $20.664 | $18.386 | ▼ 11% |
| Sydneyaustralia-southeast1 | $21.00 | $18.682 | ▼ 11% |
| Osakaasia-northeast2 | $21.504 | $19.133 | ▼ 11% |
| Seoulasia-northeast3 | $21.504 | $19.133 | ▼ 11% |
| Tokyoasia-northeast1 | $21.504 | $19.133 | ▼ 11% |
| Warsaweurope-central2 | $21.672 | $19.281 | ▼ 11% |
| Melbourneaustralia-southeast2 | $21.84 | $19.428 | ▼ 11% |
| Jakartaasia-southeast2 | $22.512 | $20.029 | ▼ 11% |
| Hong Kongasia-east2 | $23.52 | $20.923 | ▼ 11% |
| Zuricheurope-west6 | $23.52 | $20.923 | ▼ 11% |
| Santiagosouthamerica-west1 | $24.024 | $21.374 | ▼ 11% |
| Berlineurope-west10 | $25.872 | $23.021 | ▼ 11% |
| São Paulosouthamerica-east1 | $26.712 | $23.768 | ▼ 11% |
| Dammamme-central2 | $26.88 | $23.91 | ▼ 11% |
Keep exploring
Each type’s own page, and how it compares with others.
GCP AlloyDB PostgreSQL prices in USD. Monthly figures use 730 hours. Prices last updated 12 Nov 2026.