c4-highmem-4-lssdvsc4a-highmem-4-lssd
c4a-highmem-4-lssd is 11% cheaper than c4-highmem-4-lssd on demand in Iowa, saving $112.86 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-4-lssd | c4a-highmem-4-lssd |
|---|---|---|
| On-demand | $1.40/hr | $1.245/hr11% less |
| Lowest rate | $0.672/hr3-yr committed use, no upfront | $0.5978/hr11% less3-yr committed use, no upfront |
| Size | 4 vCPUs, 32 GiB | 4 vCPUs, 32 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-4-lssd | c4a-highmem-4-lssd | c4a-highmem-4-lssd vs c4-highmem-4-lssd |
|---|---|---|---|
| On-demandPay by the hour | $1.40 | $1.245 | ▼ 11% |
| 1-yr committed useNo upfront | 25% off$1.05 | 25% off$0.9341 | ▼ 11% |
| 3-yr committed useNo upfront | 52% off$0.672 | 52% off$0.5978 | ▼ 11% |
Key differences
The biggest lead each one has.
Where c4-highmem-4-lssd leads
No clear lead on the measures we compare.
Where c4a-highmem-4-lssd leads
On-demand price$1.245 vs $1.40 per hour
11% cheaperSpecs
4 of 8 specs differ. Those are in bold.
| Compute1 of 2 differ | c4-highmem-4-lssd | c4a-highmem-4-lssd |
|---|---|---|
| vCPUs | 4 | 4 |
| Architecture | x86_64 | arm64 |
| MemoryAll 1 match | c4-highmem-4-lssd | c4a-highmem-4-lssd |
|---|---|---|
| Memory (GiB) | 32 | 32 |
| StorageAll 1 match | c4-highmem-4-lssd | c4a-highmem-4-lssd |
|---|---|---|
| Storage | Cluster storage + local SSD cache | Cluster storage + local SSD cache |
| Instance details2 of 2 differ | c4-highmem-4-lssd | c4a-highmem-4-lssd |
|---|---|---|
| Family | c4 | c4a |
| Category | C4 | C4A |
| Other1 of 2 differ | c4-highmem-4-lssd | c4a-highmem-4-lssd |
|---|---|---|
| Series | C4 | C4A |
| Specs source | AlloyDB machine type docs | AlloyDB machine type docs |
On-demand prices by region
Cheapest for c4-highmem-4-lssd first. PostgreSQL, USD per hour.
| Region | c4-highmem-4-lssd | c4a-highmem-4-lssd | Difference |
|---|---|---|---|
| Columbusus-east5 | $1.40 | $1.245 | ▼ 11% |
| IowaUsed in summaryus-central1 | $1.40 | $1.245 | ▼ 11% |
| Northern Virginiaus-east4 | $1.40 | $1.245 | ▼ 11% |
| Oregonus-west1 | $1.40 | $1.245 | ▼ 11% |
| Mumbaiasia-south1 | $1.456 | $1.295 | ▼ 11% |
| Bangkokasia-southeast3 | $1.47 | $1.308 | ▼ 11% |
| Netherlandseurope-west4 | $1.47 | $1.308 | ▼ 11% |
| Stockholmeurope-north2 | $1.47 | $1.308 | ▼ 11% |
| Mexiconorthamerica-south1 | $1.526 | $1.358 | ▼ 11% |
| Belgiumeurope-west1 | $1.54 | $1.37 | ▼ 11% |
| Finlandeurope-north1 | $1.54 | $1.37 | ▼ 11% |
| Johannesburgafrica-south1 | $1.54 | $1.37 | ▼ 11% |
| Montréalnorthamerica-northeast1 | $1.54 | $1.37 | ▼ 11% |
| Tel Avivme-west1 | $1.54 | $1.37 | ▼ 11% |
| Torontonorthamerica-northeast2 | $1.54 | $1.37 | ▼ 11% |
| Las Vegasus-west4 | $1.582 | $1.408 | ▼ 11% |
| South Carolinaus-east1 | $1.582 | $1.408 | ▼ 11% |
| Londoneurope-west2 | $1.596 | $1.42 | ▼ 11% |
| Milaneurope-west8 | $1.624 | $1.445 | ▼ 11% |
| Pariseurope-west9 | $1.624 | $1.445 | ▼ 11% |
| Taiwanasia-east1 | $1.624 | $1.445 | ▼ 11% |
| Dallasus-south1 | $1.652 | $1.47 | ▼ 11% |
| Frankfurteurope-west3 | $1.652 | $1.47 | ▼ 11% |
| Madrideurope-southwest1 | $1.652 | $1.47 | ▼ 11% |
| Turineurope-west12 | $1.652 | $1.47 | ▼ 11% |
| Delhiasia-south2 | $1.68 | $1.495 | ▼ 11% |
| Los Angelesus-west2 | $1.68 | $1.495 | ▼ 11% |
| Salt Lake Cityus-west3 | $1.68 | $1.495 | ▼ 11% |
| Dohame-central1 | $1.708 | $1.513 | ▼ 11% |
| Singaporeasia-southeast1 | $1.722 | $1.532 | ▼ 11% |
| Sydneyaustralia-southeast1 | $1.75 | $1.557 | ▼ 11% |
| Osakaasia-northeast2 | $1.792 | $1.594 | ▼ 11% |
| Seoulasia-northeast3 | $1.792 | $1.594 | ▼ 11% |
| Tokyoasia-northeast1 | $1.792 | $1.594 | ▼ 11% |
| Warsaweurope-central2 | $1.806 | $1.607 | ▼ 11% |
| Melbourneaustralia-southeast2 | $1.82 | $1.619 | ▼ 11% |
| Jakartaasia-southeast2 | $1.876 | $1.669 | ▼ 11% |
| Hong Kongasia-east2 | $1.96 | $1.744 | ▼ 11% |
| Zuricheurope-west6 | $1.96 | $1.744 | ▼ 11% |
| Santiagosouthamerica-west1 | $2.002 | $1.781 | ▼ 11% |
| Berlineurope-west10 | $2.156 | $1.918 | ▼ 11% |
| São Paulosouthamerica-east1 | $2.226 | $1.981 | ▼ 11% |
| Dammamme-central2 | $2.24 | $1.992 | ▼ 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.