c4-highmem-8-lssdvsc4a-highmem-8-lssd
c4a-highmem-8-lssd is 11% cheaper than c4-highmem-8-lssd on demand in Iowa, saving $225.64 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-8-lssd | c4a-highmem-8-lssd |
|---|---|---|
| On-demand | $2.80/hr | $2.491/hr11% less |
| Lowest rate | $1.344/hr3-yr committed use, no upfront | $1.196/hr11% less3-yr committed use, no upfront |
| Size | 8 vCPUs, 64 GiB | 8 vCPUs, 64 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-8-lssd | c4a-highmem-8-lssd | c4a-highmem-8-lssd vs c4-highmem-8-lssd |
|---|---|---|---|
| On-demandPay by the hour | $2.80 | $2.491 | ▼ 11% |
| 1-yr committed useNo upfront | 25% off$2.10 | 25% off$1.868 | ▼ 11% |
| 3-yr committed useNo upfront | 52% off$1.344 | 52% off$1.196 | ▼ 11% |
Key differences
The biggest lead each one has.
Where c4-highmem-8-lssd leads
No clear lead on the measures we compare.
Where c4a-highmem-8-lssd leads
On-demand price$2.491 vs $2.80 per hour
11% cheaperSpecs
4 of 8 specs differ. Those are in bold.
| Compute1 of 2 differ | c4-highmem-8-lssd | c4a-highmem-8-lssd |
|---|---|---|
| vCPUs | 8 | 8 |
| Architecture | x86_64 | arm64 |
| MemoryAll 1 match | c4-highmem-8-lssd | c4a-highmem-8-lssd |
|---|---|---|
| Memory (GiB) | 64 | 64 |
| StorageAll 1 match | c4-highmem-8-lssd | c4a-highmem-8-lssd |
|---|---|---|
| Storage | Cluster storage + local SSD cache | Cluster storage + local SSD cache |
| Instance details2 of 2 differ | c4-highmem-8-lssd | c4a-highmem-8-lssd |
|---|---|---|
| Family | c4 | c4a |
| Category | C4 | C4A |
| Other1 of 2 differ | c4-highmem-8-lssd | c4a-highmem-8-lssd |
|---|---|---|
| Series | C4 | C4A |
| Specs source | AlloyDB machine type docs | AlloyDB machine type docs |
On-demand prices by region
Cheapest for c4-highmem-8-lssd first. PostgreSQL, USD per hour.
| Region | c4-highmem-8-lssd | c4a-highmem-8-lssd | Difference |
|---|---|---|---|
| Columbusus-east5 | $2.80 | $2.491 | ▼ 11% |
| IowaUsed in summaryus-central1 | $2.80 | $2.491 | ▼ 11% |
| Northern Virginiaus-east4 | $2.80 | $2.491 | ▼ 11% |
| Oregonus-west1 | $2.80 | $2.491 | ▼ 11% |
| Mumbaiasia-south1 | $2.912 | $2.591 | ▼ 11% |
| Bangkokasia-southeast3 | $2.94 | $2.615 | ▼ 11% |
| Netherlandseurope-west4 | $2.94 | $2.615 | ▼ 11% |
| Stockholmeurope-north2 | $2.94 | $2.615 | ▼ 11% |
| Mexiconorthamerica-south1 | $3.052 | $2.715 | ▼ 11% |
| Belgiumeurope-west1 | $3.08 | $2.74 | ▼ 11% |
| Finlandeurope-north1 | $3.08 | $2.74 | ▼ 11% |
| Johannesburgafrica-south1 | $3.08 | $2.74 | ▼ 11% |
| Montréalnorthamerica-northeast1 | $3.08 | $2.74 | ▼ 11% |
| Tel Avivme-west1 | $3.08 | $2.74 | ▼ 11% |
| Torontonorthamerica-northeast2 | $3.08 | $2.74 | ▼ 11% |
| Las Vegasus-west4 | $3.164 | $2.815 | ▼ 11% |
| South Carolinaus-east1 | $3.164 | $2.815 | ▼ 11% |
| Londoneurope-west2 | $3.192 | $2.84 | ▼ 11% |
| Milaneurope-west8 | $3.248 | $2.889 | ▼ 11% |
| Pariseurope-west9 | $3.248 | $2.889 | ▼ 11% |
| Taiwanasia-east1 | $3.248 | $2.889 | ▼ 11% |
| Dallasus-south1 | $3.304 | $2.94 | ▼ 11% |
| Frankfurteurope-west3 | $3.304 | $2.94 | ▼ 11% |
| Madrideurope-southwest1 | $3.304 | $2.94 | ▼ 11% |
| Turineurope-west12 | $3.304 | $2.94 | ▼ 11% |
| Delhiasia-south2 | $3.36 | $2.989 | ▼ 11% |
| Los Angelesus-west2 | $3.36 | $2.989 | ▼ 11% |
| Salt Lake Cityus-west3 | $3.36 | $2.989 | ▼ 11% |
| Dohame-central1 | $3.416 | $3.027 | ▼ 11% |
| Singaporeasia-southeast1 | $3.444 | $3.064 | ▼ 11% |
| Sydneyaustralia-southeast1 | $3.50 | $3.114 | ▼ 11% |
| Osakaasia-northeast2 | $3.584 | $3.189 | ▼ 11% |
| Seoulasia-northeast3 | $3.584 | $3.189 | ▼ 11% |
| Tokyoasia-northeast1 | $3.584 | $3.189 | ▼ 11% |
| Warsaweurope-central2 | $3.612 | $3.213 | ▼ 11% |
| Melbourneaustralia-southeast2 | $3.64 | $3.238 | ▼ 11% |
| Jakartaasia-southeast2 | $3.752 | $3.338 | ▼ 11% |
| Hong Kongasia-east2 | $3.92 | $3.487 | ▼ 11% |
| Zuricheurope-west6 | $3.92 | $3.487 | ▼ 11% |
| Santiagosouthamerica-west1 | $4.004 | $3.562 | ▼ 11% |
| Berlineurope-west10 | $4.312 | $3.837 | ▼ 11% |
| São Paulosouthamerica-east1 | $4.452 | $3.961 | ▼ 11% |
| Dammamme-central2 | $4.48 | $3.985 | ▼ 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.