Instances›AWS EC2›r8idn›r8idn.2xlarge
Compute
vCPUs8
Memory64 GiB
Mem / vCPU8.00 GiB
ProcessorXeon Scalable
Clock speed3.9 GHz
Architecturex86_64
Storage
Type1 × 474 GB NVMe SSD
Bandwidth10,000 Mbps
Throughput1250 MB/s
IOPS40,000
Networking
PerformanceUp to 40 Gigabit
Max ENIs4
IPv6Yes
GPUNone
Family sizes
r8idn.large2 vCPU · 16 GiB
r8idn.xlarge4 vCPU · 32 GiB
r8idn.2xlarge8 vCPU · 64 GiB
r8idn.4xlarge16 vCPU · 128 GiB
r8idn.8xlarge32 vCPU · 256 GiB
r8idn.12xlarge48 vCPU · 384 GiB
r8idn.16xlarge64 vCPU · 512 GiB
r8idn.24xlarge96 vCPU · 768 GiB
r8idn.32xlarge128 vCPU · 1024 GiB
r8idn.48xlarge192 vCPU · 1536 GiB
r8idn.metal-48xl192 vCPU · 1536 GiB
r8idn.96xlarge384 vCPU · 3072 GiB
r8idn.metal-96xl384 vCPU · 3072 GiB
r8idn.2xlarge

The r8idn.2xlarge pairs 8 vCPU with 64 GiB of RAM, the 8.00 GiB-per-vCPU ratio that marks a memory-optimized instance. In the name, "r" stands for RAM, "8" is the generation, "idn" marks Intel processors, local NVMe storage and enhanced networking and "2xlarge" is the size within the r8idn family. It runs on Intel Xeon Scalable (Granite Rapids) at 3.9 GHz, and AWS introduced it in May 2026. AWS has since shipped r9g; r9g.2xlarge is the direct replacement at this size. mh.vs2.xlarge on Rackspace Spot lines up one-for-one: 8 vCPU and 64 GiB, $0.938/hr on AWS in US East (N. Virginia), from $0.031/hr on Rackspace Spot.

Match qualityNo local disk

r8idn.2xlarge comes with 1 × 474 GB NVMe SSD attached to the machine. Rackspace Spot nodes use network storage only, so that disk does not come with it.

If you were using the local disk as fast scratch space — temporary files, a local cache, an index — you will need a persistent volume or object storage instead, and both are slower to read. If it was just extra space you never depended on, nothing changes.

Pricing by region
1 hr
RegionAWS on-demandAWS Spot1-yr Reserved3-yr ReservedRackspace SpotYou save
US East, N. Virginia$0.938$0.425$0.031
$0.907 savings
US Central, Chicagono AWS region$0.011
US Central, Dallasno AWS region$0.081
Hong Kong$0.011
Sydney, Australia$0.131
London, UK$0.041
US West, San Jose$0.001
US Central, Dallas 2no AWS region$0.121
When to use it
Good for
  • ●In-memory caches such as Redis and Memcached
  • ●Large JVM heaps and application servers that hold state
  • ●OLAP and business intelligence query engines
  • ●Workloads that fit inside 64 GiB of RAM
  • ●Jobs that want 1 × 474 GB of local NVMe scratch space
  • ●Network-heavy services — AWS rates this size at Up to 40 Gigabit
Avoid if
  • ●The working set needs more than 64 GiB of RAM
  • ●CPU-bound work. You are paying for memory this workload will not use.
  • ●More than 8.00 GiB of RAM per vCPU is needed — that ratio is fixed for the whole family
  • ●GPU or FPGA acceleration is needed
r8idn.2xlarge runs $685/mo on AWS on-demand. The equivalent on Rackspace Spot: $23/mo.
  • Spot sells spare capacity at market prices. It is the cheapest compute on the internet.
  • Prices are set by supply and demand. You pay what the market decides.
  • Compute is delivered as fully managed Kubernetes. All infrastructure is taken care of.
  • Egress costs $0.01/GB after the free allowance. AWS charges $0.09/GB.
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