Instances AWS RDS db.r5b.8xlarge db.r5b.8xlarge
db.r5b.8xlarge is an AWS RDS size with 32 vCPUs, 256 GiB memory (Intel Xeon Platinum 8000 series). In US East (N. Virginia) it costs $4.736 per hour on demand ($3,457.28 per month) for PostgreSQL, Single-AZ; a 1-year reserved instance with no upfront costs $2.743 per hour, 42% less. It is sold in 14 regions; the cheapest is EU (Stockholm) at $4.675 per hour.
USD per hour, PostgreSQL, Single-AZ. Reserved prices are no upfront, standard. Cheapest on-demand first.
Prices by engine and deployment in US East (N. Virginia) Option On-demand /hr 1-yr reserved /hr 3-yr reserved /hr PostgreSQL · Single-AZ $4.736 $2.743 – PostgreSQL · Multi-AZ $9.472 $5.486 – Oracle Enterprise BYOL · Single-AZ $4.41 – – Oracle Enterprise BYOL BYOM · Single-AZ $4.41 $2.779 – Oracle Enterprise BYOL BYOM Custom · Single-AZ $4.416 – – MariaDB · Single-AZ $4.736 $2.743 – MySQL · Single-AZ $4.736 $2.743 – SQL Server Developer BYOM Custom · Single-AZ $6.688 – – SQL Server Enterprise BYOM Custom · Single-AZ $6.688 – – SQL Server Standard BYOM Custom · Single-AZ $6.688 – – Oracle Enterprise BYOL BYOM · Multi-AZ $8.821 $5.557 – Oracle Enterprise BYOL BYOM Custom · Multi-AZ $8.832 – – MariaDB · Multi-AZ $9.472 $5.486 – MySQL · Multi-AZ $9.472 $5.486 – SQL Server Standard · Single-AZ $12.698 $12.00 – SQL Server Standard Custom · Single-AZ $12.698 – – SQL Server Developer BYOM Custom · Multi-AZ $13.376 – – SQL Server Enterprise BYOM Custom · Multi-AZ $13.376 – – SQL Server Standard BYOM Custom · Multi-AZ $13.376 – – SQL Server Enterprise · Single-AZ $20.613 $20.561 – SQL Server Enterprise Custom · Single-AZ $20.613 – – SQL Server Standard · Multi-AZ $25.397 $24.00 – SQL Server Standard Custom · Multi-AZ $25.397 – – SQL Server Enterprise · Multi-AZ $30.507 $30.431 – SQL Server Enterprise Custom · Multi-AZ $30.507 – –
Compute Value vCPUs 32 Physical cores 16 Threads per core 2 Architecture x86_64 Processor Intel Xeon Platinum 8000 series CPU maker Intel Clock speed Up to 3.1 GHz Sustained clock 3.1 GHz Burstable No
Memory Value Memory (GiB) 256
Networking Value Network 10 Gbps Network baseline 10 Gbps Network peak 10 Gbps
Storage Value Storage EBS Only EBS throughput 2500 Mbps EBS baseline bandwidth 20,000 Mbps EBS max bandwidth 20,000 Mbps EBS baseline throughput 2,500 MB/s EBS max throughput 2,500 MB/s EBS baseline IOPS 86,667 EBS max IOPS 86,667
Instance details Value Instance type db.r5b.8xlarge Family r5b Category Memory optimized Current generation Yes Normalization factor 128
Other Value Hardware Basis r5b.8xlarge
With or without local disk and networking
Prices updated 2026-11-12 from AWS public price lists. Compare all AWS RDS sizes .