r8a.8xlargevsr8i.8xlarge

r8i.8xlarge is 13% cheaper than r8a.8xlarge on demand in US East (N. Virginia), saving $243.45 a month.

At a glancer8a.8xlarger8i.8xlarge
On-demand$2.556/hr$2.223/hr13% less
Lowest rate$0.6218/hr2% lessSpot, can be interrupted$0.6354/hrSpot, can be interrupted
Size32 vCPUs, 256 GiB32 vCPUs, 256 GiB
ProcessorAMD EPYC 9R45 ProcessorIntel Xeon Scalable (Granite Rapids)
Architecturex86_64x86_64

Prices in US East (N. Virginia)

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

Optionr8a.8xlarger8i.8xlarger8i.8xlarge vs r8a.8xlarge
On-demandPay by the hour$2.556$2.223▼ 13%
SpotCan be interrupted76% off$0.621871% off$0.6354▲ 2%
1-yr savings planHourly commitment28% off$1.85228% off$1.61▼ 13%
3-yr savings planHourly commitment48% off$1.33348% off$1.159▼ 13%

Key differences

The biggest lead each one has.

Where r8a.8xlarge leads
Physical cores32 vs 16
2× higher
Where r8i.8xlarge leads
On-demand price$2.223 vs $2.556 per hour
13% cheaper
IPv4 addresses per interface50 vs 40
25% higher

Specs

9 of 40 specs differ. Those are in bold.

Compute7 of 10 differr8a.8xlarger8i.8xlarge
vCPUs3232
Physical cores3216
Threads per core12
Architecturex86_64x86_64
ProcessorAMD EPYC 9R45 ProcessorIntel Xeon Scalable (Granite Rapids)
CPU makerAMDIntel
Clock speedUp to 4.5 GHz3.9 GHz
Sustained clock4.5 GHz3.9 GHz
Processor featuresAMD Turbo; AVX; AVX2; AVX512Intel AVX; Intel AVX2; Intel AVX512; Intel Turbo; Intel AMX
BurstableNoNo
MemoryAll 1 matchr8a.8xlarger8i.8xlarge
Memory (GiB)256256
Networking1 of 8 differr8a.8xlarger8i.8xlarge
Network15000 Megabit15000 Megabit
Network baseline15 Gbps15 Gbps
Network peak15 Gbps15 Gbps
Enhanced networkingYes (ENA)Yes (ENA)
EFANoNo
IPv6YesYes
Max network interfaces1010
IPv4 addresses per interface4050
StorageAll 11 matchr8a.8xlarger8i.8xlarge
StorageEBS onlyEBS only
EBS optimizedYesYes
EBS over NVMeRequiredRequired
EBS throughput10000 Mbps10000 Mbps
EBS baseline bandwidth10,000 Mbps10,000 Mbps
EBS max bandwidth10,000 Mbps10,000 Mbps
EBS baseline throughput1,250 MB/s1,250 MB/s
EBS max throughput1,250 MB/s1,250 MB/s
EBS baseline IOPS40,00040,000
EBS max IOPS40,00040,000
Max EBS volumes3232
Instance details1 of 10 differr8a.8xlarger8i.8xlarge
Familyr8ar8i
CategoryMemory optimizedMemory optimized
Current generationYesYes
Normalization factor6464
Bare metalNoNo
HypervisorNitroNitro
Placement groupsCluster, Partition, SpreadCluster, Partition, Spread
HibernationNoNo
Nitro EnclavesYesYes
Boot modesLegacy BIOS, UEFILegacy BIOS, UEFI

On-demand prices by region

Cheapest for r8a.8xlarge first. Linux, USD per hour.

Regionr8a.8xlarger8i.8xlargeDifference
US East (N. Virginia)Used in summaryus-east-1$2.556$2.223▼ 13%
US East (Ohio)us-east-2$2.556$2.223▼ 13%
US West (Oregon)us-west-2$2.556$2.223▼ 13%
Canada (Central)ca-central-1$2.80$2.434▼ 13%
EU (Ireland)eu-west-1$2.86$2.487▼ 13%
Europe (Spain)eu-south-2$2.86$2.487▼ 13%
Asia Pacific (Tokyo)ap-northeast-1$3.083$2.681▼ 13%
EU (Frankfurt)eu-central-1$3.083$2.681▼ 13%

Keep exploring

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

r8a.8xlargeMemory optimized, r8a family
r8a.8xlarge prices and specsEvery size in the r8a family

Compare r8a.8xlarge with

r8g.8xlargec8a.8xlargem8a.8xlarger7a.8xlarge
r8i.8xlargeMemory optimized, r8i family
r8i.8xlarge prices and specsEvery size in the r8i family

Compare r8i.8xlarge with

c8i.8xlargem8i.8xlarger8g.8xlarger8i-flex.8xlarger8ib.8xlarger8id.8xlarger8idb.8xlarger8idn.8xlarger8in.8xlarger7i.8xlarge

Pay the committed rate, with commitment protection

The best committed rate on these two is 48% below on-demand. Connect your cloud accounts to unlock greater savings with commitment protection.

Connect AWS account

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