A/B Testing Gaming Frame Rate Calculator Examples
Worked gaming FPS A/B test examples for graphics settings, driver updates, and performance changes with benchmark variation included.
These examples show how average FPS, repeated benchmark runs, and run-to-run variation affect the estimated difference between two gaming test variants.
Graphics preset change at 1080p
A player runs the same built-in benchmark 40 times per preset at 1080p.
Input Summary
Variant A average FPS
90 FPS
Variant B average FPS
99 FPS
Runs per variant
40
Variant A standard deviation
9 FPS
Variant B standard deviation
10 FPS
Calculation Breakdown
- 1FPS difference99 - 909 FPS
- 2FPS uplift(9 / 90) * 10010.00%
- 3Standard errorsqrt(pow(9, 2) / 40 + pow(10, 2) / 40)2.13 FPS
- 4Approximate 95% range9 +/- 1.96 * 2.134.82 to 13.18 FPS
Result Summary
Approximate 95% range
4.82 to 13.18 FPS
A/B Testing Gaming Frame Rate Calculator
Variant B averages 9 FPS more, or a 10.00% uplift, with an approximate 95% difference range of 4.8 to 13.2 FPS.
Driver update with a small measured gain
The same test route is repeated 30 times before and after the driver update.
Input Summary
Variant A average FPS
144 FPS
Variant B average FPS
147 FPS
Runs per variant
30
Variant A standard deviation
13 FPS
Variant B standard deviation
14 FPS
Calculation Breakdown
- 1FPS difference147 - 1443 FPS
- 2FPS uplift(3 / 144) * 1002.08%
- 3Standard errorsqrt(pow(13, 2) / 30 + pow(14, 2) / 30)3.49 FPS
- 4Approximate 95% range3 +/- 1.96 * 3.49-3.84 to 9.84 FPS
Result Summary
Approximate 95% range
-3.84 to 9.84 FPS
A/B Testing Gaming Frame Rate Calculator
Variant B is 3 FPS faster on average, but the approximate interval ranges from a small loss to a larger gain.
Upscaling mode comparison
A tester uses 60 runs per mode while keeping resolution, route, and graphics quality otherwise constant.
Input Summary
Variant A average FPS
72 FPS
Variant B average FPS
96 FPS
Runs per variant
60
Variant A standard deviation
8 FPS
Variant B standard deviation
11 FPS
Calculation Breakdown
- 1FPS difference96 - 7224 FPS
- 2FPS uplift(24 / 72) * 10033.33%
- 3Standard errorsqrt(pow(8, 2) / 60 + pow(11, 2) / 60)1.75 FPS
- 4Approximate 95% range24 +/- 1.96 * 1.7520.57 to 27.43 FPS
Result Summary
Approximate 95% range
20.57 to 27.43 FPS
A/B Testing Gaming Frame Rate Calculator
Variant B gains 24 FPS, or 33.33%, with an approximate 95% difference range of 20.6 to 27.4 FPS.
CPU tuning comparison with high variation
Twenty repeated runs are collected for each configuration, but the route has noticeable variability.
Input Summary
Variant A average FPS
110 FPS
Variant B average FPS
116 FPS
Runs per variant
20
Variant A standard deviation
18 FPS
Variant B standard deviation
20 FPS
Calculation Breakdown
- 1FPS difference116 - 1106 FPS
- 2FPS uplift(6 / 110) * 1005.45%
- 3Standard errorsqrt(pow(18, 2) / 20 + pow(20, 2) / 20)6.03 FPS
- 4Approximate 95% range6 +/- 1.96 * 6.03-5.82 to 17.82 FPS
Result Summary
Approximate 95% range
-5.82 to 17.82 FPS
A/B Testing Gaming Frame Rate Calculator
Variant B averages 6 FPS more, but the approximate confidence range crosses zero because the benchmark results vary widely.
How to Read Your Results
Read the FPS difference first: positive values favor Variant B and negative values favor Variant A.
Use percentage uplift to scale the gain to the baseline; a 10 FPS gain has different meaning at 60 FPS and 240 FPS.
Use the standard-error score as a signal-to-variation measure rather than a gameplay-quality rating.
Check whether the approximate 95% range crosses zero; if it does, the measured data do not clearly separate a gain from ordinary variation.
Review average FPS alongside 1% lows, frame times, latency, power use, and image quality when those factors matter.
Assumptions & Important Notes
- Each example assumes equivalent benchmark scenes, durations, game builds, and test settings except for the intended change.
- Standard deviations refer to variation among comparable benchmark-run FPS results.
- The approximate confidence calculation uses a normal 1.96 multiplier.
- Results are estimates for the tested setup and may not transfer to another system or game scene.
Related Examples
Frequently Asked Questions
Can I use these examples for manual game benchmarks?
Yes. Treat each comparable benchmark pass or controlled capture as an observation, then enter the average FPS, run count, and standard deviation for each variant.
Why can a higher average FPS still have an interval that crosses zero?
The observed gain can be small compared with run-to-run variation or based on too few runs, producing a wide uncertainty range.
Do I need equal numbers of runs for both variants?
No. The formula accepts different run counts, although balanced, comparable testing is often easier to interpret.
Do these examples measure 1% lows?
No. They compare average FPS. A separate analysis is needed for 1% lows, frame times, and stutter.
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