Technology & Computing
Server RAM Sizing from Concurrent Connections & Buffer Pool Calculator
Estimate how much RAM a server needs based on concurrent connections, per-connection memory and buffer pool size.
Your inputs
Change any value to update the result instantly.
Recommended RAM to provision
26.6 GB
Connection memory total
1.28 GB
Buffer pool allocation
16 GB
Bare minimum RAM (no headroom)
21.28 GB
A 25% headroom margin over the calculated minimum helps absorb connection spikes, OS page cache needs and memory fragmentation.
Formula and working
Required RAM = (concurrent connections × memory per connection) + buffer pool + OS/app overhead
- 1
Collect the inputs
Peak concurrent connections = 5,000; Memory per connection (KB) = 256; Database/cache buffer pool (GB) = 16; OS and application overhead (GB) = 4
- 2
Apply the formula
Required RAM = (concurrent connections × memory per connection) + buffer pool + OS/app overhead
- 3
Result
Recommended RAM to provision = 26.6 GB
Frequently asked questions
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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