Instances›AWS EC2›c6gd›c6gd.medium
Compute
vCPUs1
Memory2 GiB
Mem / vCPU2.00 GiB
ProcessorGraviton2 Processor
Clock speed2.5 GHz
Architecturearm64
Storage
Type1 × 59 GB NVMe SSD
Bandwidth4,750 Mbps
Throughput593.75 MB/s
IOPS20,000
Networking
PerformanceUp to 10 Gigabit
Max ENIs2
IPv6Yes
GPUNone
Family sizes
c6gd.medium1 vCPU · 2 GiB
c6gd.large2 vCPU · 4 GiB
c6gd.xlarge4 vCPU · 8 GiB
c6gd.2xlarge8 vCPU · 16 GiB
c6gd.4xlarge16 vCPU · 32 GiB
c6gd.8xlarge32 vCPU · 64 GiB
c6gd.12xlarge48 vCPU · 96 GiB
c6gd.16xlarge64 vCPU · 128 GiB
c6gd.metal64 vCPU · 128 GiB
c6gd.medium

c6gd.medium is AWS's compute-optimized EC2 size at 1 vCPU and 2 GiB. In the name, "c" stands for compute, "6" is the generation, "gd" marks AWS Graviton (ARM) processors and local NVMe storage and "medium" is the size within the c6gd family. It runs on AWS Graviton2 Processor at 2.5 GHz, and AWS introduced it in July 2020. AWS has since shipped c7gd, c8gd and c9gd; c7gd.medium is the direct replacement at this size, scoring 24,917 CoreMark/s against this instance's 19,099 — roughly 30% more throughput for the same vCPU count. Rackspace Spot maps this to ch.vs2.medium (2 vCPU, 4 GiB), giving you 1 more vCPU and 2 GiB more memory, about 95% below the US East (N. Virginia) on-demand rate.

Match qualityx86 substitution

c6gd.medium is Graviton (arm64). Rackspace Spot does not have arm64 servers, so ch.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.

No local diskc6gd.medium comes with 1 × 59 GB NVMe SSD attached to the machine. Spot nodes use network storage only, so that disk doesn't come with it. If you were using it as fast scratch space, you'd move to a persistent volume or object storage, which are slower to read.
Pricing by region
1 hr
RegionAWS on-demandAWS Spot1-yr Reserved3-yr ReservedRackspace SpotYou save
US East, N. Virginia$0.038$0.007$0.024$0.017$0.002
$0.036 savings
US Central, Chicagono AWS region$0.011
US Central, Dallasno AWS region$0.011
Hong Kong$0.061
Sydney, Australia$0.051$0.010$0.032$0.022$0.061
London, UK$0.046$0.012$0.029$0.020$0.016
$0.030 savings
US West, San Jose$0.048$0.008$0.030$0.021$0.011
$0.037 savings
US Central, Dallas 2no AWS region$0.011
US East, N. Virginia 2$0.038$0.007$0.024$0.017$0.011
$0.027 savings
When to use it
Good for
  • ●High-traffic web and API serving
  • ●Scientific modelling and simulation
  • ●Ad serving and real-time bidding
  • ●Workloads that fit inside 2 GiB of RAM
  • ●Jobs that want 1 × 59 GB of local NVMe scratch space
  • ●Network-heavy services — AWS rates this size at Up to 10 Gigabit
Avoid if
  • ●Starting a new deployment. c7gd.medium is the newer generation at this size.
  • ●The working set needs more than 2 GiB of RAM
  • ●You cannot rebuild x86-only binaries or vendor images for aarch64
  • ●More than 2.00 GiB of RAM per vCPU is needed — that ratio is fixed for the whole family
  • ●GPU or FPGA acceleration is needed
  • ●Memory-hungry applications. A memory-optimized family gives more RAM per dollar.
$28/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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