RAM Compatibility Checker

Pick your CPU + use case. Get the right DDR5 speed, latency target, capacity ceiling, and a real kit to buy.

CPU

Motherboard Form Factor

Primary Use Case

We use the official JEDEC spec for each platform, then layer in real-world EXPO/XMP sweet spots that 2026-era memory controllers can actually run 1:1.

Recommended Kit

32GB DDR5-6000 CL30

2 × 16GB · 2-channel

For AMD Ryzen 7 7800X3D on AMD AM5 (Ryzen 7000 / 9000)

PlatformAMD AM5 (Ryzen 7000 / 9000)

JEDEC specDDR5-5600

Sweet spotDDR5-6000 CL30

Max stableDDR5-6400

Max capacity192 GB

Channels2-channel

ProfileEXPO required

NotesDDR5-6000 CL30 is the proven 1:1 Infinity Fabric sweet spot. Going above 6400 MT/s drops to 2:1 and loses real latency.

Shop matching kits →

Top picks at DDR5-6000 CL30

Real kits in stock from trusted memory brands. Click any card to buy on Amazon with our affiliate tag.

G.Skill · 32GB

Trident Z5 Neo RGB 32GB (2x16) DDR5-6000 CL30

$119Shop →

Corsair · 32GB

Vengeance RGB 32GB (2x16) DDR5-6000 CL30

$109Shop →

Kingston Fury

Kingston Fury · 32GB

Beast RGB 32GB (2x16) DDR5-6000 CL30

$114Shop →

How this is calculated

AM5 (Ryzen 7000/9000) is officially DDR5-5200/5600 but tops out near DDR5-6000 CL30 in 1:1 Infinity Fabric mode — that's the real sweet spot. Push past 6400 MT/s and you drop to a 2:1 ratio and lose latency. Intel 14th gen runs DDR5-5600 officially but CUDIMM/XMP gets you 7200-8400. Threadripper sTR5 wants ECC DDR5-5200 quad-channel. Xeon W9 runs 8-channel DDR5-4800 ECC.