Architecture & Sizing
AWS General Purpose Flex Comparison: M7i vs M7i-flex
5% savings on standard 4:1 RAM general purpose workloads
Compare standard M7i instances against M7i-flex. Discover the sweet spot between predictable baseline performance and cost optimization.
1. Architectural & Silicon Specs Head-to-Head
Comparing underlying processor microarchitectures, memory ratios, and Nitro generation features using representative xlarge sizing.
m7ix86_64
M7I General Purpose
ProcessorIntel Xeon Scalable (Sapphire Rapids)
Clock Speed3.2 GHz
RAM / vCPU4.0 GiB/vCPU
Max Network50 Gbps
Max EBS IOPS240,000
AWS NitroSupported
Min Rate (m7i.xlarge)$0.2016/hr
Monthly Est.$147.17/mo
Cost per vCPU$0.0504/hr
Cost per GiB RAM$0.0126/hr
CoreMark Benchmark89,171
CoreMark / $442,316
Price Index100% of highest
Compute / $ Value100% (Leader)
m7i-flexx86_64
M7I-FLEX General Purpose
ProcessorIntel Xeon Scalable (Sapphire Rapids)
Clock Speed3.5 GHz
RAM / vCPU4.0 GiB/vCPU
Max NetworkUp to 25 Gbps
Max EBS IOPS80,000
AWS NitroSupported
Min Rate (m7i-flex.xlarge)$0.1915/hr
Monthly Est.$139.81/mo
Cost per vCPU$0.0479/hr
Cost per GiB RAM$0.0120/hr
CoreMark Benchmark78,698
CoreMark / $410,913
Price IndexLowest Cost
Save 5% vs most expensive
Compute / $ Value93% of leader
2. Side-by-Side Sizing & Pricing Matrix
Direct price and benchmark comparison across matching instance tiers in the lowest-cost region. Lowest hourly cost in each row is highlighted in green.
| Size Tier | vCPU | Memory | m7iLinux Rate | m7i-flexLinux Rate |
|---|---|---|---|---|
| .large | 2 | 8 GB | ||
| .xlarge | 4 | 16 GB | ||
| .2xlarge | 8 | 32 GB | ||
| .4xlarge | 16 | 64 GB | ||
| .8xlarge | 32 | 128 GB | ||
| .12xlarge | 48 | 192 GB | ||
| .16xlarge | 64 | 256 GB | ||
| .24xlarge | 96 | 384 GB | — | |
| .48xlarge | 192 | 768 GB | — |
3. Workload Decision Framework
Clear, actionable rules on when each family wins based on workload profile, runtime language, and licensing boundaries.
Recommended:M7i-flex
When: Web applications, microservices, and internal business tools
Why: Guaranteed 5% savings on monthly compute with full 4 GiB per vCPU.
5. Related Architecture Comparisons
Explore adjacent generational comparisons and silicon trade-offs.