G.Skill DDR5-6400 CL32 2×32 GB vs Samsung fastlött LPDDR4X-4267 8×2 GB
Short answer: which is best?
G.Skill DDR5-6400 CL32 2×32 GB is 14 % stronger than Samsung fastlött LPDDR4X-4267 8×2 GB. G.Skill DDR5-6400 CL32 2×32 GB ranks #28 of 42 measured memory kits at WhatFPS (7,327 RAM score over 1 verified runs). Samsung fastlött LPDDR4X-4267 8×2 GB ranks #33 of 42 measured memory kits at WhatFPS (6,425 RAM score over 1 verified runs). The numbers are measured in 2 verified WhatFPS runs — not estimated, not self-reported.
Measured comparison
| Metric | G.Skill DDR5-6400 CL32 2×32 GB | Samsung fastlött LPDDR4X-4267 8×2 GB |
|---|---|---|
| RAM score (the kit's own performance: bandwidth + latency) | 7,327 | 6,425 |
| Best rig (GAMING — whole PC) | 13,665 | 880 |
| Bandwidth, one thread | 26,704 MB/s | 24,519 MB/s |
| RAM latency (lower is better) | 132.4 ns | 158 ns |
| Rated speed | 6,400 MT/s | 4,267 MT/s |
| Runs at (seen, avg) | 6,400 MT/s | 4,267 MT/s |
| Capacity | 64 GB | 16 GB |
What the numbers mean
The RAM score is the kit's measured performance in the rigs it sat in — single-thread bandwidth and latency beyond L3. Platform, BIOS settings and whether XMP/EXPO was on all affect it. GAMING is the whole rig's score. We show both and never mix them.
All numbers come from our benchmark suite, the same test on every PC, written in Rust with no middleware. The methodology is open at https://whatfps.com/metodik
All measurements for G.Skill DDR5-6400 CL32 2×32 GB · All measurements for Samsung fastlött LPDDR4X-4267 8×2 GB