G.Skill Aegis DDR4-2400 CL15 2×16 GB vs G.Skill DDR5-6400 CL32 2×32 GB
Short answer: which is best?
G.Skill Aegis DDR4-2400 CL15 2×16 GB is 5 % stronger than G.Skill DDR5-6400 CL32 2×32 GB. G.Skill Aegis DDR4-2400 CL15 2×16 GB ranks #26 of 42 measured memory kits at WhatFPS (7,692 RAM score over 1 verified runs). 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). The numbers are measured in 2 verified WhatFPS runs — not estimated, not self-reported.
Measured comparison
| Metric | G.Skill Aegis DDR4-2400 CL15 2×16 GB | G.Skill DDR5-6400 CL32 2×32 GB |
|---|---|---|
| RAM score (the kit's own performance: bandwidth + latency) | 7,692 | 7,327 |
| Best rig (GAMING — whole PC) | 4,848 | 13,665 |
| Bandwidth, one thread | 18,161 MB/s | 26,704 MB/s |
| RAM latency (lower is better) | 81.7 ns | 132.4 ns |
| Rated speed | 2,400 MT/s | 6,400 MT/s |
| Runs at (seen, avg) | 2,133 MT/s | 6,400 MT/s |
| Capacity | 32 GB | 64 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 Aegis DDR4-2400 CL15 2×16 GB · All measurements for G.Skill DDR5-6400 CL32 2×32 GB