Instances›AWS EC2›m8idb›m8idb.xlarge
Compute
vCPUs4
Memory16 GiB
Mem / vCPU4.00 GiB
ProcessorXeon Scalable
Clock speed3.9 GHz
Architecturex86_64
Storage
Type1 × 237 GB NVMe SSD
Bandwidth25,000 Mbps
Throughput3125 MB/s
IOPS120,000
Networking
PerformanceUp to 20 Gigabit
Max ENIs4
IPv6Yes
GPUNone
Family sizes
m8idb.large2 vCPU · 8 GiB
m8idb.xlarge4 vCPU · 16 GiB
m8idb.2xlarge8 vCPU · 32 GiB
m8idb.4xlarge16 vCPU · 64 GiB
m8idb.8xlarge32 vCPU · 128 GiB
m8idb.12xlarge48 vCPU · 192 GiB
m8idb.16xlarge64 vCPU · 256 GiB
m8idb.24xlarge96 vCPU · 384 GiB
m8idb.32xlarge128 vCPU · 512 GiB
m8idb.48xlarge192 vCPU · 768 GiB
m8idb.metal-48xl192 vCPU · 768 GiB
m8idb.96xlarge384 vCPU · 1536 GiB
m8idb.metal-96xl384 vCPU · 1536 GiB
m8idb.xlarge

m8idb.xlarge is AWS's general-purpose EC2 size at 4 vCPU and 16 GiB. In the name, "m" is the general-purpose line, "8" is the generation, "idb" marks Intel processors, local NVMe storage and block-storage optimisation and "xlarge" is the size within the m8idb family. It runs on Intel Xeon Scalable (Granite Rapids) at 3.9 GHz, and AWS introduced it in May 2026. AWS has since shipped m9g; m9g.xlarge is the direct replacement at this size, scoring 145,914 CoreMark/s against this instance's 97,720 — roughly 49% more throughput for the same vCPU count. On Rackspace Spot the same shape is gp.vs2.large — 4 vCPU, 16 GiB, matched on both dimensions, $0.382/hr on AWS in US East (N. Virginia), from $0.011/hr on Rackspace Spot.

Match qualityNo local disk

m8idb.xlarge comes with 1 × 237 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$0.382$0.133$0.011
$0.371 savings
US Central, Chicagono AWS region$0.011
US Central, Dallasno AWS region$0.021
Hong Kong$0.011
Sydney, Australia$0.011
London, UK$0.026
US West, San Jose$0.041
US Central, Dallas 2no AWS region$0.041
US East, N. Virginia 2$0.382$0.133$0.041
$0.341 savings
When to use it
Good for
  • ●Web and application servers with mixed CPU and memory demand
  • ●Microservices and container fleets
  • ●Development, staging and CI environments
  • ●Workloads that fit inside 16 GiB of RAM
  • ●Jobs that want 1 × 237 GB of local NVMe scratch space
  • ●Network-heavy services — AWS rates this size at Up to 20 Gigabit
Avoid if
  • ●The working set needs more than 16 GiB of RAM
  • ●Sustained full-core CPU load. A compute-optimized family costs less per unit of work.
  • ●More than 4.00 GiB of RAM per vCPU is needed — that ratio is fixed for the whole family
  • ●GPU or FPGA acceleration is needed
m8idb.xlarge runs $279/mo on AWS on-demand. The equivalent on Rackspace Spot: $8/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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