Instances›AWS EC2›c8i-flex›c8i-flex.large
Compute
vCPUs2
Memory4 GiB
Mem / vCPU2.00 GiB
ProcessorXeon Scalable
Clock speed3.9 GHz
Architecturex86_64
Storage
TypeEBS only
Bandwidth10,000 Mbps
Throughput1250 MB/s
IOPS40,000
Networking
PerformanceUp to 12.5 Gigabit
Max ENIs3
IPv6Yes
GPUNone
Family sizes
c8i-flex.large2 vCPU · 4 GiB
c8i-flex.xlarge4 vCPU · 8 GiB
c8i-flex.2xlarge8 vCPU · 16 GiB
c8i-flex.4xlarge16 vCPU · 32 GiB
c8i-flex.8xlarge32 vCPU · 64 GiB
c8i-flex.12xlarge48 vCPU · 96 GiB
c8i-flex.16xlarge64 vCPU · 128 GiB
c8i-flex.large

The c8i-flex.large pairs 2 vCPU with 4 GiB of RAM, the 2.00 GiB-per-vCPU ratio that marks a compute-optimized instance. It runs on Intel Xeon Scalable (Granite Rapids) at 3.9 GHz, and AWS introduced it in October 2025. ch.vs2.medium on Rackspace Spot lines up one-for-one: 2 vCPU and 4 GiB, $0.089/hr on AWS in US East (N. Virginia), from $0.002/hr on Rackspace Spot.

Pricing by region
1 hr
RegionAWS on-demandAWS Spot1-yr Reserved3-yr ReservedRackspace SpotYou save
US East, N. Virginia$0.089$0.025$0.002
$0.087 savings
US Central, Chicagono AWS region$0.011
US Central, Dallasno AWS region$0.011
Hong Kong$0.061
Sydney, Australia$0.116$0.038$0.061
$0.055 savings
London, UK$0.106$0.036$0.016
$0.090 savings
US West, San Jose$0.111$0.035$0.011
$0.100 savings
US Central, Dallas 2no AWS region$0.011
US East, N. Virginia 2$0.089$0.025$0.011
$0.078 savings
When to use it
Good for
  • ●Video encoding and transcoding
  • ●High-traffic web and API serving
  • ●Scientific modelling and simulation
  • ●Workloads that fit inside 4 GiB of RAM
  • ●Small, steady services that do not need more than 2 vCPU
  • ●Network-heavy services — AWS rates this size at Up to 12.5 Gigabit
Avoid if
  • ●The working set needs more than 4 GiB of RAM
  • ●GPU or FPGA acceleration is needed
  • ●Memory-hungry applications. A memory-optimized family gives more RAM per dollar.
  • ●More than 2.00 GiB of RAM per vCPU is needed — that ratio is fixed for the whole family
  • ●Local NVMe or instance-store disk is a hard requirement
Stop overpaying AWS. This compute costs $65/mo on AWS vs $1/mo on Rackspace Spot.
  • 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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Frequently asked questions