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docs/misc-cpu-base-freq.md: Improve readability in Appendix
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
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‎docs/misc-cpu-base-freq.md‎

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@@ -800,7 +800,7 @@ distinction helps avoid confusion:
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MPERF counter rate, same for all core types, static. Does not represent sustainable frequency.
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Most probably not very useful for software.
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- **Sysfs Base Frequency**: Linux kernel definition, derived from ACPI CPPC or HWP guaranteed
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performance level, differs between core types, dynamic. Represents platform best estimate of
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performance level, differs between core types, dynamic. Represents platform's best estimate of
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sustainable frequency, but not guaranteed. Depending on thermal and power conditions, the
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workload, other components activity (e.g., GPU), may or may not be sustainable.
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@@ -855,66 +855,69 @@ Challenges:
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This appendix compares Intel HWP and ACPI CPPC performance levels across several hybrid Intel
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client platforms.
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**Table Format Notes**:
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- CPPC columns show "Nominal / Guaranteed" (e.g., "26 / 27" or "15" when both values are the same).
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- HWP columns show only the Guaranteed performance level.
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- All values are unitless performance levels.
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Table formatting note: Values are shown as "CPPC / HWP" when they differ (e.g., "18 / 21"), or as a
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single number when identical (e.g., "1").
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### Alder Lake
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| Performance Level | P-core CPPC | P-core HWP | E-core CPPC | E-core HWP |
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|-----------------------------------|-------------|------------|-------------|------------|
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| Lowest | 1 | 1 | 1 | 1 |
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| Lowest Nonlinear / Most Efficient | 18 | 21 | 13 | 16 |
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| Nominal / Guaranteed | 26 / 27 | 27 | 15 | 15 |
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| Highest | 60 | 60 | 34 | 34 |
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| Performance Level | P-core | E-core |
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|---------------------------------------------|---------|---------|
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| CPPC / HWP Lowest | 1 | 1 |
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| CPPC Lowest Nonlinear / HWP Most Efficient | 18 / 21 | 13 / 16 |
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| CPPC Nominal / HWP Guaranteed | 26 / 27 | 15 |
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| CPPC / HWP Highest | 60 | 34 |
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Note: Alder Lake does not have LPE-cores.
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### Raptor Lake
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| Performance Level | P-core CPPC | P-core HWP | E-core CPPC | E-core HWP |
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|-----------------------------------|-------------|------------|-------------|------------|
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| Lowest | 1 | 1 | 1 | 1 |
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| Lowest Nonlinear / Most Efficient | 22 | 20 | 16 | 15 |
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| Nominal / Guaranteed | 24 / 25 | 25 | 19 / 14 | 14 |
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| Highest | 59 | 59 | 34 | 34 |
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| Performance Level | P-core | E-core |
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|---------------------------------------------|---------|---------|
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| CPPC / HWP Lowest | 1 | 1 |
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| CPPC Lowest Nonlinear / HWP Most Efficient | 22 / 20 | 16 / 15 |
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| CPPC Nominal / HWP Guaranteed | 24 / 25 | 19 / 14 |
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| CPPC / HWP Highest | 59 | 34 |
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### Meteor Lake
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| Performance Level | P-core CPPC | P-core HWP | E-core CPPC | E-core HWP | LPE-core CPPC | LPE-core HWP |
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|-----------------------------------|-------------|------------|-------------|------------|---------------|--------------|
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| Lowest | 1 | 1 | 1 | 1 | 1 | 1 |
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| Lowest Nonlinear / Most Efficient | 15 | 15 | 14 | 14 | 11 | 11 |
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| Nominal / Guaranteed | 13 / 14 | 14 | 38 / 7 | 7 | 21 / 4 | 4 |
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| Highest | 60 | 60 | 38 | 38 | 21 | 21 |
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| Performance Level | P-core | E-core | LPE-core |
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|---------------------------------------------|---------|--------|----------|
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| CPPC / HWP Lowest | 1 | 1 | 1 |
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| CPPC Lowest Nonlinear / HWP Most Efficient | 15 | 14 | 11 |
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| CPPC Nominal / HWP Guaranteed | 13 / 14 | 38 / 7 | 21 / 4 |
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| CPPC / HWP Highest | 60 | 38 | 21 |
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### Arrow Lake
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| Performance Level | P-core CPPC | P-core HWP | E-core CPPC | E-core HWP | LPE-core CPPC | LPE-core HWP |
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|-----------------------------------|-------------|------------|-------------|------------|---------------|--------------|
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| Lowest | 1 | 1 | 1 | 1 | 1 | 1 |
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| Lowest Nonlinear / Most Efficient | 23 | 23 | 16 | 17 | 10 | 9 |
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| Nominal / Guaranteed | 36 / 37 | 37 | 21 | 21 | 7 | 7 |
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| Highest | 72 | 72 | 55 | 55 | 25 | 25 |
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| Performance Level | P-core | E-core | LPE-core |
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|---------------------------------------------|---------|---------|----------|
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| CPPC / HWP Lowest | 1 | 1 | 1 |
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| CPPC Lowest Nonlinear / HWP Most Efficient | 23 | 16 / 17 | 10 / 9 |
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| CPPC Nominal / HWP Guaranteed | 36 / 37 | 21 | 7 |
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| CPPC / HWP Highest | 72 | 55 | 25 |
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### Lunar Lake
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| Performance Level | P-core CPPC | P-core HWP | LPE-core CPPC | LPE-core HWP |
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|-----------------------------------|-------------|------------|---------------|--------------|
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| Lowest | 1 | 1 | 1 | 1 |
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| Lowest Nonlinear / Most Efficient | 19 | 15 | 11 | 17 |
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| Nominal / Guaranteed | 25 / 26 | 26 | 22 | 22 |
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| Highest | 57 | 57 | 37 | 37 |
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| Performance Level | P-core | LPE-core |
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|---------------------------------------------|---------|----------|
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| CPPC / HWP Lowest | 1 | 1 |
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| CPPC Lowest Nonlinear / HWP Most Efficient | 18 / 15 | 11 / 17 |
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| CPPC Nominal / HWP Guaranteed | 25 / 26 | 22 |
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| CPPC / HWP Highest | 57 | 37 |
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Note: Lunar Lake does not have E-cores.
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### Panther Lake
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| Performance Level | P-core CPPC | P-core HWP | E-core CPPC | E-core HWP | LPE-core CPPC | LPE-core HWP |
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|-----------------------------------|-------------|------------|-------------|------------|---------------|--------------|
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| Lowest | 1 | 1 | 1 | 1 | 1 | 1 |
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| Lowest Nonlinear / Most Efficient | 17 | 17 | 15 | 15 | 15 | 9 |
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| Nominal / Guaranteed | 22 / 23 | 23 | 16 | 16 | 16 | 16 |
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| Highest | 36 | 36 | 24 | 24 | 24 | 24 |
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| Performance Level | P-core | E-core | LPE-core |
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|---------------------------------------------|---------|--------|----------|
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| CPPC / HWP Lowest | 1 | 1 | 1 |
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| CPPC Lowest Nonlinear / HWP Most Efficient | 17 | 15 | 15 / 9 |
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| CPPC Nominal / HWP Guaranteed | 22 / 23 | 16 | 16 |
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| CPPC / HWP Highest | 36 | 24 | 24 |
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Note: On Panther Lake, E-cores and LPE-cores have identical CPPC and HWP performance levels, except
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for HWP Most Efficient. The CPPC Lowest Nonlinear level is 15 for CPUs 2-9 (E-cores and LPE-cores),
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and 17 for CPUs 0-1 (P-cores). However, HWP Most Efficient shows significant per-CPU variation: 17
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for CPUs 0-1 (P-cores), 15 for CPUs 2-5 (E-cores), 12 for CPU 6, 10 for CPU 7, and 9 for CPUs 8-9
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(LPE-cores). The table shows 17 for P-cores, 15 for E-cores, and 9 for LPE-cores.

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