[Perf] Windows/x64: 2 Improvements on 1/13/2026 7:58:42 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [043cba865ac0fb1ba8e021376eca8c552350671a](https://github.com/dotnet/runtime/commit/043cba865ac0fb1ba8e021376eca8c552350671a)
Compare | [e079636c9baa12b5c082958b9fa1a9b70f40a1f1](https://github.com/dotnet/runtime/commit/e079636c9baa12b5c082958b9fa1a9b70f40a1f1)
Diff | [Diff](https://github.com/dotnet/runtime/compare/043cba865ac0fb1ba8e021376eca8c552350671a...e079636c9baa12b5c082958b9fa1a9b70f40a1f1)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Perf_Convert

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|

• [ToBase64String - Duration of single invocation]()
• 📝 - [Benchmark Source]()
• [ADX - Test Multi Config Graph]()

| 1.04 μs | 933.98 ns | 0.90 | 0.01 | False | | |
|

• [ToBase64CharArray - Duration of single invocation]()
• 📝 - [Benchmark Source]()
• [ADX - Test Multi Config Graph]()

| 966.30 ns | 855.38 ns | 0.89 | 0.01 | False | | |

![graph]()
![graph]()
[Test Report]()

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Perf_Convert*'
```

### System.Perf_Convert.ToBase64String(formattingOptions: InsertLineBreaks)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Perf_Convert.ToBase64CharArray(binaryDataSize: 1024, formattingOptions: InsertLineBreaks)

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)