x8g.12xlargevsx8i.12xlarge

x8g.12xlarge is 11% cheaper than x8i.12xlarge on demand in US East (N. Virginia), saving $410.48 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 glancex8g.12xlargex8i.12xlarge
On-demand$4.69/hr11% less$5.252/hr
Lowest rate$1.945/hrSpot, can be interrupted$1.296/hr33% lessSpot, can be interrupted
Size48 vCPUs, 768 GiB48 vCPUs, 768 GiB
ProcessorAWS Graviton4 ProcessorIntel Xeon Scalable (Granite Rapids)
Architecturearm64x86_64

Prices in US East (N. Virginia)

“Off” is the discount against each type’s own on-demand price. Linux, USD per hour.

Optionx8g.12xlargex8i.12xlargex8i.12xlarge vs x8g.12xlarge
On-demandPay by the hour$4.69$5.252▲ 12%
SpotCan be interrupted59% off$1.94575% off$1.296▼ 33%
1-yr reservedNo upfront38% off$2.89——
3-yr reservedNo upfront66% off$1.602——
1-yr savings planHourly commitment26% off$3.46826% off$3.882▲ 12%
3-yr savings planHourly commitment59% off$1.92361% off$2.025▲ 5%

Key differences

The biggest lead each one has.

Where x8g.12xlarge leads
On-demand price$4.69 vs $5.252 per hour
11% cheaper
Physical cores48 vs 24
2× higher
Where x8i.12xlarge leads
IPv4 addresses per interface50 vs 30
67% higher
Clock speed3.9 GHz vs 2.7 GHz
44% higher

Specs

14 of 40 specs differ. Those are in bold.

Compute8 of 10 differx8g.12xlargex8i.12xlarge
vCPUs4848
Physical cores4824
Threads per core12
Architecturearm64x86_64
ProcessorAWS Graviton4 ProcessorIntel Xeon Scalable (Granite Rapids)
CPU makerAWSIntel
Clock speed2.7 GHz3.9 GHz
Sustained clock2.8 GHz3.9 GHz
Processor features–Intel AVX; Intel AVX2; Intel AVX512; Intel Turbo; Intel AMX
BurstableNoNo
MemoryAll 1 matchx8g.12xlargex8i.12xlarge
Memory (GiB)768768
Networking3 of 8 differx8g.12xlargex8i.12xlarge
Network22.5 Gigabit22500 Megabit
Network baseline22.5 Gbps22.5 Gbps
Network peak22.5 Gbps22.5 Gbps
Enhanced networkingYes (ENA)Yes (ENA)
EFANoNo
IPv6YesYes
Max network interfaces812
IPv4 addresses per interface3050
Storage1 of 11 differx8g.12xlargex8i.12xlarge
StorageEBS onlyEBS only
EBS optimizedYesYes
EBS over NVMeRequiredRequired
EBS throughput15 Gbps15000 Mbps
EBS baseline bandwidth15,000 Mbps15,000 Mbps
EBS max bandwidth15,000 Mbps15,000 Mbps
EBS baseline throughput1,875 MB/s1,875 MB/s
EBS max throughput1,875 MB/s1,875 MB/s
EBS baseline IOPS60,00060,000
EBS max IOPS60,00060,000
Max EBS volumes3232
Instance details2 of 10 differx8g.12xlargex8i.12xlarge
Familyx8gx8i
CategoryMemory optimizedMemory optimized
Current generationYesYes
Normalization factor9696
Bare metalNoNo
HypervisorNitroNitro
Placement groupsCluster, Partition, SpreadCluster, Partition, Spread
HibernationNoNo
Nitro EnclavesYesYes
Boot modesUEFILegacy BIOS, UEFI

On-demand prices by region

Cheapest for x8g.12xlarge first. Linux, USD per hour.

Regionx8g.12xlargex8i.12xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$4.69$5.252▲ 12%
US East (Ohio)us-east-2$4.69$5.252▲ 12%
US West (Oregon)us-west-2$4.69$5.252▲ 12%
EU (Stockholm)eu-north-1$5.339$5.989▲ 12%
EU (Ireland)eu-west-1$5.616$6.302▲ 12%
Asia Pacific (Sydney)ap-southeast-2$5.628$7.615▲ 35%
EU (Frankfurt)eu-central-1$6.554$7.353▲ 12%

Keep exploring

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

x8g.12xlargeMemory optimized, x8g family
x8g.12xlarge prices and specsEvery size in the x8g family
x8i.12xlargeMemory optimized, x8i family
x8i.12xlarge prices and specsEvery size in the x8i family

Pay the committed rate, with commitment protection

The best committed rate on these two is 61–66% below on-demand. Connect your cloud accounts to unlock greater savings with commitment protection.

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AWS EC2 Linux prices in USD. Monthly figures use 730 hours. Prices last updated 12 Nov 2026.