G.Skill DDR5-6400 CL32 2×32 GB

Measured performance for G.Skill DDR5-6400 CL32 2×32 GB across 2 verified WhatFPS runs. Every number is measured in our benchmark suite — not estimated, not self-reported. RAM score (the kit's own performance: bandwidth + latency): 8,412 on average over the best run per rig, best run 8,412 — #40 of 82 measured memory kits. Most often paired with Intel(R) Core(TM) Ultra 7 265K.

G.Skill DDR5-6400 CL32 2×32 GB — subtests

  • Bandwidth, one thread (STREAM Add): 29,895 MB/s
  • Read: 83,397 MB/s
  • Write: 45,935 MB/s
  • RAM latency (pointer chase beyond L3): 112.4 ns — lower is better

Specifications

  • Manufacturer: G.Skill
  • Type: DDR5
  • Rated speed: 6,400 MT/s
  • Runs at (seen, avg): 6,400 MT/s
  • CL: 32
  • Modules: 2 × 32 GB
  • Capacity: 64 GB
  • Part number: F5-6400J3239G32G

What the numbers mean

The GAMING score is a geometric mean of GPU (63 %), CPU (30 %), RAM (5 %) and drive (2 %) — a weak part cannot hide behind a strong one. The RAM score is a geometric mean of bandwidth and latency. Bandwidth is measured on ONE thread — a single core cannot saturate two memory channels, so the measurement cannot see channels and we claim nothing about them. Latency is a pointer chase in a buffer four times larger than L3. The score is measured on the whole configuration: a kit running below its rated speed (XMP/EXPO off) gets the score the rig actually delivered. Every run is HMAC-signed in the app and scored on the server. The full methodology is open at https://whatfps.com/metodik

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