G.Skill's DRAM Extremes: DDR4-4000 on AMD Ryzen, DDR4-5066 on Intel Core i7
AMD Ryzen 4000 Strikes Again: Renoir Clocks DDR4 To World Record 6666 MHz | Tom's Hardware
Ryzen 5000 CPUs recommends DDR4-4000MHz system memory for best performance
Ryzen 5 5500 + Samsung B-Die Viper Steel 4000-19 RAM OC Results | TechPowerUp Forums
4000mhz RAM tuning with Ryzen 5600x - PassMark Support Forums
Crucial Ballistix Elite DDR4 4000MHz Memory Review - Legit Reviews
3200MHz vs. 3600MHz vs. 4000MHz | Best RAM for Ryzen 5000? - YouTube
Ryzen 5950x Running DDR 3600 vs DDR 4000 Benchmark which one is better. : r/Amd
4000mhz ram with 2700X : r/Amd
AMD Ryzen 5000 "Zen 3" Desktop CPU Built For Memory Overclocking, DDR4-4000 Recommended As Sweet Spot
Crucial Ballistix Elite DDR4 4000MHz Memory Review - Legit Reviews
AMD RYZEN + 4000MHz RAM... WHAT HAPPENS? -- PNY XLR8 Gaming Epic-X RGB - YouTube
3200MHz vs 3600MHz vs 4000MHz vs 4400MHz vs 4800MHz | RAM TEST | RYZEN 7 5800X3D | PC GAMES TEST || - YouTube
AMD Ryzen 5000 CPUs may run best with faster DDR4-4000 memory | PC Gamer
AMD Ryzen 5000 Slide Suggests 4000MHz RAM is 'Perfect' : r/Amd
RAM || 3200 MHz vs 3600 MHz vs 4000 MHz || RYZEN 9 5900X || PC GAMES TEST || - YouTube
Is it worth pairing a 4000 MHz RAM with a 5800x Ryzen CPU vs a 3600 MHz for gaming? - Quora
DDR4 Memory at 4000 MT/s, Does It Make a Difference? | TechSpot
PNY XLR8 Epic-X 4000 MHz RAM Review: Is it worth buying? - GameRevolution
G.Skill reveals Ultra-Low-Latency 4000MHz DDR4 memory with CL15 timings | OC3D News
G.Skill 64GB DDR4 TridentZ RGB 4000Mhz PC4-32000 CL18 1.40V Dual Channel Kit at Amazon.com
Is it worth pairing a 4000 MHz RAM with a 5800x Ryzen CPU vs a 3600 MHz for gaming? - Quora
PNY XLR8 Epic-X 4000 MHz RAM Review: Is it worth buying? - GameRevolution
CORSAIR VENGEANCE PRO 16 GB (2PK x 8GB) 4000MHz DDR4 C18 DIMM Desktop Memory with RGB lighting Black CMW16GX4M2Z4000C18 - Best Buy
