Instances›AWS EC2›m8gb›m8gb.medium
Compute
vCPUs1
Memory4 GiB
Mem / vCPU4.00 GiB
ProcessorGraviton4 Processor
Clock speed2.8 GHz
Architecturearm64
Storage
TypeEBS only
Bandwidth25,000 Mbps
Throughput3125 MB/s
IOPS120,000
Networking
PerformanceUp to 16.66 Gigabit
Max ENIs2
IPv6Yes
GPUNone
Family sizes
m8gb.medium1 vCPU · 4 GiB
m8gb.large2 vCPU · 8 GiB
m8gb.xlarge4 vCPU · 16 GiB
m8gb.2xlarge8 vCPU · 32 GiB
m8gb.4xlarge16 vCPU · 64 GiB
m8gb.8xlarge32 vCPU · 128 GiB
m8gb.12xlarge48 vCPU · 192 GiB
m8gb.16xlarge64 vCPU · 256 GiB
m8gb.24xlarge96 vCPU · 384 GiB
m8gb.metal-24xl96 vCPU · 384 GiB
m8gb.48xlarge192 vCPU · 768 GiB
m8gb.metal-48xl192 vCPU · 768 GiB
m8gb.medium

m8gb.medium is AWS's general-purpose EC2 size at 1 vCPU and 4 GiB. In the name, "m" is the general-purpose line, "8" is the generation, "gb" marks AWS Graviton (ARM) processors and block-storage optimisation and "medium" is the size within the m8gb family. It runs on AWS Graviton4 Processor at 2.8 GHz, and AWS introduced it in December 2025. AWS has since shipped m9g; m9g.medium is the direct replacement at this size, scoring 34,415 CoreMark/s against this instance's 30,250 — roughly 14% more throughput for the same vCPU count. Rackspace Spot maps this to gp.vs2.medium (2 vCPU, 4 GiB), giving you 1 more vCPU and the same memory, $0.073/hr on AWS in US East (N. Virginia), from $0.002/hr on Rackspace Spot.

Match qualityx86 substitution

m8gb.medium is Graviton (arm64). Rackspace Spot does not have arm64 servers, so gp.vs2.medium is an x86_64 substitute with similar specs.

You will need x86 builds of your container images. Most software rebuilds without changes, but anything with compiled native code needs a real rebuild rather than a retag. Speed per core also differs between the two chips, so it is worth testing before deciding how many nodes to run.

Pricing by region
1 hr
RegionAWS on-demandAWS Spot1-yr Reserved3-yr ReservedRackspace SpotYou save
US East, N. Virginia$0.073$0.019$0.002
$0.071 savings
US Central, Chicagono AWS region$0.016
US Central, Dallasno AWS region$0.006
Hong Kong$0.002
Sydney, Australia$0.006
London, UK$0.041
US West, San Jose$0.011
US Central, Dallas 2no AWS region$0.021
US East, N. Virginia 2$0.073$0.019$0.011
$0.062 savings
When to use it
Good for
  • ●Development, staging and CI environments
  • ●Small to mid-size relational databases
  • ●Backend services with no single dominant resource
  • ●Workloads that fit inside 4 GiB of RAM
  • ●Small, steady services that do not need more than 1 vCPU
  • ●Network-heavy services — AWS rates this size at Up to 16.66 Gigabit
Avoid if
  • ●The working set needs more than 4 GiB of RAM
  • ●You cannot rebuild x86-only binaries or vendor images for aarch64
  • ●Local NVMe or instance-store disk is a hard requirement
  • ●GPU or FPGA acceleration is needed
  • ●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
$53/mo on AWS on-demand against $1/mo on Rackspace Spot for the equivalent — market-priced, not list-priced.
  • 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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