I have a brand new ROG Strix G16 G614FM with Ryzen 9 9955HX and Samsung 9100 PRO 1TB. Sequential speeds are great (~14,000 MB/s), but random 4K is absolute garbage.
Device Information
Model: ASUS ROG Strix G16 G614FM-WS94
CPU: AMD Ryzen 9 9955HX
BIOS Version: 307 (latest available)
OS: Windows 11
SSD: Samsung 9100 PRO 1TB (PCIe 5.0)
Problem Description
NVMe random 4K read/write performance is significantly below expected values, while sequential performance is normal.
Test Results (CrystalDiskMark 9.0.1)
Test Read Write Expected
SEQ1M Q8T1 13,985 MB/s 12,814 MB/s ~14,000 MB/s
RND4K Q32T1 711 MB/s ✗ 650 MB/s ✗ ~2,000+ MB/s
RND4K Q1T1 68 MB/s 216 MB/s Similar
IOPS for RND4K Q32T1: ~175,000 (expected: 1,500,000+)
Troubleshooting Performed
Updated BIOS to version 307 (latest)
Updated AMD chipset drivers (latest from AMD)
Updated Samsung NVMe firmware (latest)
Tested with Samsung NVMe Driver and Microsoft driver - same result
Disabled Link State Power Management
Tested in Samsung Magician Full Performance Mode
Physically swapped M.2 slots - same result
Removed second M.2 Drive - same result
Tested second SSD (different brand) - same low performance
Tested in Linux (Ubuntu Live USB with fio) - same low performance (~500 MB/s)
Key Findings
Sequential speeds are correct (PCIe 5.0 is working)
Random 4K is ~70-80% below expected performance
Problem affects BOTH M.2 slots
Problem affects DIFFERENT SSD brands
Problem persists in Linux (not Windows-specific)
This indicates a platform/BIOS level issue
Conclusion:
Since BOTH SSDs show the same problem, and it happens in Linux too — this is clearly a platform/BIOS issue, not Windows or SSD related.
Anyone else with G614FM (2025 AMD model) experiencing this?
Is this a known issue with Ryzen 9000 mobile or this specific laptop?
Specs: ROG Strix G16 G614FM-WS94 | Ryzen 9 9955HX | RTX 5070 | 96GB DDR5 | Samsung 9100 PRO 1TB
