# LPDDR5 5467 vs. 6400 vs. 7467 MT/s Memory Performance Benchmarks For Laptops

> **Key Architectural Takeaway:** With the recently reviewed Star Labs StarFighter Ultra Linux laptop its BIOS allows for configurable memory speeds unlike many other laptop vendor BIOS implementations these days.

**Published:** 2026-10-15T19:02:37+00:00 
**Source:** Phoronix Benchmarks & Drivers 
**Category:** kernel-os 
**Canonical URL:** https://fosswire.org/news/lpddr5-5467-vs-6400-vs-7467-mts-memory-performance-benchmark.html 

## Executive Summary
With the recently reviewed Star Labs StarFighter Ultra Linux laptop its BIOS allows for configurable memory speeds unlike many other laptop vendor BIOS implementations these days. Star Labs also made the default design decision to run the LPDDR5-7467 rated memory at LPDDR5-6400 speeds in the name of a balanced user experience for power/performance. So I was curious to run some benchmarks quantifying that power and performance impact of LPDDR5-6400 vs.

## Architectural & Systems Analysis
From an operating systems and systems programming perspective:

- **Upstream Cohesion:** Merging patches upstream prevents fragmented fork debt and guarantees binary compatibility.
- **Attack Surface Reduction:** Stripping obsolete legacy subsystems strengthens real-world operational security.
- **Resource Determinism:** Enhancements to scheduling and memory management minimize jitter in high-throughput workloads.

## Impact on the Open Ecosystem
Ensures kernel infrastructure remains auditable, stable under heavy load, and compliant with modern reproducibility standards.