m8idb.16xlargevsr8idb.16xlarge
m8idb.16xlarge is 19% cheaper than r8idb.16xlarge on demand in US East (N. Virginia), saving $1,016.82 a month.
| At a glance | m8idb.16xlarge | r8idb.16xlarge |
|---|---|---|
| On-demand | $6.11/hr19% less | $7.503/hr |
| Lowest rate | $1.868/hr10% lessSpot, can be interrupted | $2.064/hrSpot, can be interrupted |
| Size | 64 vCPUs, 256 GiB | 64 vCPUs, 512 GiB |
| Processor | Intel Xeon Scalable (Granite Rapids) | Intel Xeon Scalable (Granite Rapids) |
| Architecture | x86_64 | x86_64 |
Prices in US East (N. Virginia)
“Off” is the discount against each type’s own on-demand price. Linux, USD per hour.
| Option | m8idb.16xlarge | r8idb.16xlarge | r8idb.16xlarge vs m8idb.16xlarge |
|---|---|---|---|
| On-demandPay by the hour | $6.11 | $7.503 | ▲ 23% |
| SpotCan be interrupted | 69% off$1.868 | 72% off$2.064 | ▲ 10% |
| 1-yr savings planHourly commitment | 27% off$4.465 | 28% off$5.436 | ▲ 22% |
| 3-yr savings planHourly commitment | 55% off$2.731 | 53% off$3.508 | ▲ 28% |
Key differences
The biggest lead each one has.
Where m8idb.16xlarge leads
On-demand price$6.11 vs $7.503 per hour
19% cheaperWhere r8idb.16xlarge leads
Memory (GiB)512 vs 256
2× higherSpecs
3 of 41 specs differ. Those are in bold.
| ComputeAll 10 match | m8idb.16xlarge | r8idb.16xlarge |
|---|---|---|
| vCPUs | 64 | 64 |
| Physical cores | 32 | 32 |
| Threads per core | 2 | 2 |
| Architecture | x86_64 | x86_64 |
| Processor | Intel Xeon Scalable (Granite Rapids) | Intel Xeon Scalable (Granite Rapids) |
| CPU maker | Intel | Intel |
| Clock speed | 3.9 GHz | 3.9 GHz |
| Sustained clock | 3.9 GHz | 3.9 GHz |
| Processor features | Intel AVX; Intel AVX2; Intel AVX512; Intel Turbo; Intel AMX | Intel AVX; Intel AVX2; Intel AVX512; Intel Turbo; Intel AMX |
| Burstable | No | No |
| Memory1 of 1 differ | m8idb.16xlarge | r8idb.16xlarge |
|---|---|---|
| Memory (GiB) | 256 | 512 |
| NetworkingAll 8 match | m8idb.16xlarge | r8idb.16xlarge |
|---|---|---|
| Network | 66.66 Gigabit | 66.66 Gigabit |
| Network baseline | 66.666 Gbps | 66.666 Gbps |
| Network peak | 66.666 Gbps | 66.666 Gbps |
| Enhanced networking | Yes (ENA) | Yes (ENA) |
| EFA | No | No |
| IPv6 | Yes | Yes |
| Max network interfaces | 16 | 16 |
| IPv4 addresses per interface | 64 | 64 |
| StorageAll 12 match | m8idb.16xlarge | r8idb.16xlarge |
|---|---|---|
| Storage | 1 x 3800 NVMe SSD | 1 x 3800 NVMe SSD |
| Local disks | 1 × 3,800 GB SSD | 1 × 3,800 GB SSD |
| EBS optimized | Yes | Yes |
| EBS over NVMe | Required | Required |
| EBS throughput | 50000 Mbps | 50000 Mbps |
| EBS baseline bandwidth | 50,000 Mbps | 50,000 Mbps |
| EBS max bandwidth | 50,000 Mbps | 50,000 Mbps |
| EBS baseline throughput | 6,250 MB/s | 6,250 MB/s |
| EBS max throughput | 6,250 MB/s | 6,250 MB/s |
| EBS baseline IOPS | 240,000 | 240,000 |
| EBS max IOPS | 240,000 | 240,000 |
| Max EBS volumes | 48 | 48 |
| Instance details2 of 10 differ | m8idb.16xlarge | r8idb.16xlarge |
|---|---|---|
| Family | m8idb | r8idb |
| Category | General purpose | Memory optimized |
| Current generation | Yes | Yes |
| Normalization factor | 128 | 128 |
| Bare metal | No | No |
| Hypervisor | Nitro | Nitro |
| Placement groups | Cluster, Partition, Spread | Cluster, Partition, Spread |
| Hibernation | No | No |
| Nitro Enclaves | Yes | Yes |
| Boot modes | Legacy BIOS, UEFI | Legacy BIOS, UEFI |
On-demand prices by region
Cheapest for m8idb.16xlarge first. Linux, USD per hour.
| Region | m8idb.16xlarge | r8idb.16xlarge | Difference |
|---|---|---|---|
| US East (N. Virginia)Used in summaryus-east-1 | $6.11 | $7.503 | ▲ 23% |
| US East (Ohio)us-east-2 | $6.11 | $7.503 | ▲ 23% |
| US West (Oregon)us-west-2 | $6.11 | $7.503 | ▲ 23% |
| Europe (Spain)eu-south-2 | $6.689 | $8.357 | ▲ 25% |
| EU (Ireland)eu-west-1 | $6.829 | $8.357 | ▲ 22% |
| Asia Pacific (Tokyo)ap-northeast-1 | $7.862 | $9.12 | ▲ 16% |
Keep exploring
Each type’s own page, and how it compares with others.
m8idb.16xlarge
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r8idb.16xlarge
r8idb.16xlarge prices and specsEvery size in the r8idb familyCompare r8idb.16xlarge with
AWS EC2 Linux prices in USD. Monthly figures use 730 hours. Prices last updated 12 Nov 2026.