db.c6gd.16xlargevsdb.r6gd.16xlarge

At a glancedb.c6gd.16xlargedb.r6gd.16xlarge
Size64 vCPUs, 128 GiB64 vCPUs, 512 GiB
Architecturearm64arm64

Key differences

The biggest lead each one has.

Where db.c6gd.16xlarge leads

No clear lead on the measures we compare.

Where db.r6gd.16xlarge leads
Memory (GiB)512 vs 128
4× higher

Specs

9 of 25 specs differ. Those are in bold.

Compute1 of 8 differdb.c6gd.16xlargedb.r6gd.16xlarge
vCPUs6464
Physical cores6464
Threads per core11
Architecturearm64arm64
ProcessorAWS Graviton2–
CPU makerAWSAWS
Sustained clock2.5 GHz2.5 GHz
BurstableNoNo
Memory1 of 1 differdb.c6gd.16xlargedb.r6gd.16xlarge
Memory (GiB)128512
Networking1 of 3 differdb.c6gd.16xlargedb.r6gd.16xlarge
Network25 Gbps–
Network baseline25 Gbps25 Gbps
Network peak25 Gbps25 Gbps
Storage1 of 8 differdb.c6gd.16xlargedb.r6gd.16xlarge
Storage2 x 1900 NVMe SSD–
Local disks2 × 1,900 GB SSD2 × 1,900 GB SSD
EBS baseline bandwidth19,000 Mbps19,000 Mbps
EBS max bandwidth19,000 Mbps19,000 Mbps
EBS baseline throughput2,375 MB/s2,375 MB/s
EBS max throughput2,375 MB/s2,375 MB/s
EBS baseline IOPS80,00080,000
EBS max IOPS80,00080,000
Instance details4 of 4 differdb.c6gd.16xlargedb.r6gd.16xlarge
Familyc6gdr6gd
CategoryCompute optimized–
Current generationYes–
Normalization factor384128
Other1 of 1 differdb.c6gd.16xlargedb.r6gd.16xlarge
Hardware Basisc6gd.16xlarger6gd.16xlarge

Keep exploring

Each type’s own page, and how it compares with others.

db.c6gd.16xlargeCompute optimized, c6gd family
db.c6gd.16xlarge prices and specsEvery size in the c6gd family

Compare db.c6gd.16xlarge with

db.m6gd.16xlarge
db.r6gd.16xlarger6gd family
db.r6gd.16xlarge prices and specsEvery size in the r6gd family

Compare db.r6gd.16xlarge with

db.r6g.16xlargedb.m6gd.16xlargedb.r6id.16xlargedb.r8gd.16xlarge

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AWS RDS PostgreSQL prices in USD. Monthly figures use 730 hours. Prices last updated 12 Nov 2026.