r8gb.12xlargevsr8ib.12xlarge
r8gb.12xlarge is 13% cheaper than r8ib.12xlarge on demand in US East (N. Virginia), saving $473.41 a month. They use different processor architectures (arm64 and x86_64), so software built for one may need rebuilding to run on the other.
| At a glance | r8gb.12xlarge | r8ib.12xlarge |
|---|---|---|
| On-demand | $4.372/hr13% less | $5.021/hr |
| Lowest rate | $1.246/hr43% lessSpot, can be interrupted | $2.17/hrSpot, can be interrupted |
| Size | 48 vCPUs, 384 GiB | 48 vCPUs, 384 GiB |
| Processor | AWS Graviton4 Processor | Intel Xeon Scalable (Granite Rapids) |
| Architecture | arm64 | 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 | r8gb.12xlarge | r8ib.12xlarge | r8ib.12xlarge vs r8gb.12xlarge |
|---|---|---|---|
| On-demandPay by the hour | $4.372 | $5.021 | ▲ 15% |
| SpotCan be interrupted | 71% off$1.246 | 57% off$2.17 | ▲ 74% |
| 1-yr savings planHourly commitment | 28% off$3.168 | 28% off$3.638 | ▲ 15% |
| 3-yr savings planHourly commitment | 53% off$2.04 | 53% off$2.342 | ▲ 15% |
Key differences
The biggest lead each one has.
Where r8gb.12xlarge leads
On-demand price$4.372 vs $5.021 per hour
13% cheaperPhysical cores48 vs 24
2× higherNetwork baseline100 Gbps vs 50 Gbps
2× higherEBS baseline bandwidth75,000 Mbps vs 37,500 Mbps
2× higherWhere r8ib.12xlarge leads
IPv4 addresses per interface50 vs 30
67% higherClock speed3.9 GHz vs 2.8 GHz
39% higherSpecs
21 of 40 specs differ. Those are in bold.
| Compute8 of 10 differ | r8gb.12xlarge | r8ib.12xlarge |
|---|---|---|
| vCPUs | 48 | 48 |
| Physical cores | 48 | 24 |
| Threads per core | 1 | 2 |
| Architecture | arm64 | x86_64 |
| Processor | AWS Graviton4 Processor | Intel Xeon Scalable (Granite Rapids) |
| CPU maker | AWS | Intel |
| Clock speed | 2.8 GHz | 3.9 GHz |
| Sustained clock | 2.8 GHz | 3.9 GHz |
| Processor features | – | Intel AVX; Intel AVX2; Intel AVX512; Intel Turbo; Intel AMX |
| Burstable | No | No |
| MemoryAll 1 match | r8gb.12xlarge | r8ib.12xlarge |
|---|---|---|
| Memory (GiB) | 384 | 384 |
| Networking4 of 8 differ | r8gb.12xlarge | r8ib.12xlarge |
|---|---|---|
| Network | 100 Gigabit | 50 Gigabit |
| Network baseline | 100 Gbps | 50 Gbps |
| Network peak | 100 Gbps | 50 Gbps |
| Enhanced networking | Yes (ENA) | Yes (ENA) |
| EFA | No | No |
| IPv6 | Yes | Yes |
| Max network interfaces | 12 | 12 |
| IPv4 addresses per interface | 30 | 50 |
| Storage7 of 11 differ | r8gb.12xlarge | r8ib.12xlarge |
|---|---|---|
| Storage | EBS only | EBS only |
| EBS optimized | Yes | Yes |
| EBS over NVMe | Required | Required |
| EBS throughput | 75000 Mbps | 37500 Mbps |
| EBS baseline bandwidth | 75,000 Mbps | 37,500 Mbps |
| EBS max bandwidth | 75,000 Mbps | 37,500 Mbps |
| EBS baseline throughput | 9,375 MB/s | 4,687.5 MB/s |
| EBS max throughput | 9,375 MB/s | 4,687.5 MB/s |
| EBS baseline IOPS | 360,000 | 180,000 |
| EBS max IOPS | 360,000 | 180,000 |
| Max EBS volumes | 32 | 32 |
| Instance details2 of 10 differ | r8gb.12xlarge | r8ib.12xlarge |
|---|---|---|
| Family | r8gb | r8ib |
| Category | Memory optimized | Memory optimized |
| Current generation | Yes | Yes |
| Normalization factor | 96 | 96 |
| Bare metal | No | No |
| Hypervisor | Nitro | Nitro |
| Placement groups | Cluster, Partition, Spread | Cluster, Partition, Spread |
| Hibernation | No | No |
| Nitro Enclaves | Yes | Yes |
| Boot modes | UEFI | Legacy BIOS, UEFI |
On-demand prices by region
Cheapest for r8gb.12xlarge first. Linux, USD per hour.
| Region | r8gb.12xlarge | r8ib.12xlarge | Difference |
|---|---|---|---|
| US East (N. Virginia)Used in summaryus-east-1 | $4.372 | $5.021 | ▲ 15% |
| US West (Oregon)us-west-2 | $4.372 | $5.021 | ▲ 15% |
Keep exploring
Each type’s own page, and how it compares with others.
AWS EC2 Linux prices in USD. Monthly figures use 730 hours. Prices last updated 12 Nov 2026.