On-Demand
$2312.11/mo
Reserved - 1 Year
0.00/mo
vCPUs
48
Memory
384 GiB

r8i-flex Family

Memory optimized
r8i-flex.large
2 vCPU16 GiB
$96.3381
/mo
r8i-flex.xlarge
4 vCPU32 GiB
$192.6762
/mo
r8i-flex.2xlarge
8 vCPU64 GiB
$385.3524
/mo
r8i-flex.4xlarge
16 vCPU128 GiB
$770.7048
/mo
r8i-flex.8xlarge
32 vCPU256 GiB
$1541.4096
/mo
r8i-flex.12xlarge
48 vCPU384 GiB
$2312.1144
/mo
r8i-flex.16xlarge
64 vCPU512 GiB
$3082.8192
/mo
View all instances

r8i-flex.12xlarge

Updated: February 23, 2026
The r8i-flex.12xlarge instance is in the R8I-FLEX Memory optimized family with 48 vCPUs and 384 GiB of memory, pricing starts at $3.1673 per hour and $2312.1144 per month in us-east-1 region.
Configuration & Pricing
Pricing
Monthly Cost
$2312.1144 / month
Hourly Cost
$3.1673 / hour
Reserved (1 yr)
0.00 / month
Compute
Name
R8I-FLEX 12xlarge Extra Large
Series
R8I-FLEX
Compute Family
Memory optimized
Generation
current
vCPUs
48 vCPUs
Instance Memory
384 GiB
GiB of Memory per vCPU
8.00 GiB/vCPU
Clock Speed(GHz)
3.9 GHz
Physical Processor
Intel Xeon Scalable (Granite Rapids)
CPU Architecture
x86_64
GPUs
0
GPU memory
0 GiB
CoreMark Score
1,195,169.523
Networking
Network Performance
Up to 22.5 Gigabit
Max IPs
600
Enhanced Networking
Yes
IPv6 Support
Yes
Storage
Instance Storage
EBS only
EBS Optimized
true
Max Bandwidth (Mbps) on EBS
15000 Mbps
Max Throughput (Mbps) on EBS
1875 MB/s
Max IOPS on EBS
60000 IOPS
Baseline Bandwidth (Mbps) on EBS
7500 Mbps
Baseline Throughput (Mbps) on EBS
937.5 MB/s
Baseline IOPS on EBS
30000 IOPS

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