G.Skill

G.Skill Trident Z5 RGB 64GB DDR5-6400 CL32

Ranked #6 in RAM

502 LP on the category ladder what's LP?

A fast, high-capacity kit that tested well and reached DDR5-6800 in all three hands-on reviews. Its Intel-only profile, its 1.40V rating and the fact that games do not need 64GB keep it behind simpler 6000 MT/s kits for AMD gaming builds.

Consolidated from 4 independent outlets

Where the cited sources landed, as we read them

4 mixed sources

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About this product

This page covers the G.Skill Trident Z5 RGB F5-6400J3239G32GX2-TZ5RK, a 64GB DDR5 desktop memory kit made of two 32GB sticks with a black heat spreader and an RGB light bar. It boots at 4800 MT/s and reaches its rated 6400 MT/s at 32-39-39-102 and 1.40V once you enable its Intel XMP 3.0 profile in the BIOS.

G.Skill developed and tuned the Trident Z5 RGB on the Intel platform, and this kit carries an Intel XMP profile only, with no AMD EXPO profile. It suits Intel builds that run memory-hungry apps or heavy multitasking. PC Gamer points out that games do not need 64GB yet, so the extra capacity is for work rather than frame rates.

Tom's Hardware and TechPowerUp tested the white version of this kit, F5-6400J3239G32GX2-TZ5RW, and Guru3D also tested a white 64GB kit at the same 6400 MT/s, 32-39-39-102 and 1.40V profile. In G.Skill's part numbers the final letter only marks the color, so their results are the closest guide to this black kit.

Specifications

Part number: F5-6400J3239G32GX2-TZ5RK 1
Capacity: 64GB (32GBx2) 1
Memory type: DDR5 1
Rated speed: 6400 MT/s 1
Timings: 32-39-39-102 1
Voltage: 1.40V 1
Default speed: 4800 MT/s 1
Profile: Intel XMP 3.0 1
Module height: 44mm (1.73in) 3
Color: Black 3
Warranty: Limited Lifetime 1

Checked by hand in September 2026 against 8 sources

Pros & cons

✓ Reached DDR5-6800 in all three hands-on reviews of the white version
✓ Beat faster DDR5-7200 kits by up to 3.4% in Tom's Hardware's capacity-hungry Adobe Premiere test
✓ Did well on Tom's Hardware's AMD Ryzen 7000 system despite having no EXPO profile
✓ Ran relatively cool in Guru3D's testing
✓ Limited lifetime warranty

✗ Needs 1.40V for its rated profile, where some similar kits need only 1.35V
✗ Intel XMP profile only, with no AMD EXPO profile
✗ Runs at only 4800 MT/s until you enable its profile in the BIOS
✗ At 44mm the sticks stand taller than low-profile kits such as G.Skill's own 33mm Flare X5
✗ PC Gamer notes that 64GB brings no higher frame rates in games yet

The sources behind this ranking

We searched the web and YouTube for what has been published about this product, then read the articles, video transcripts and comments we found.

4 mixed sources

Critical Reviews Critical Reviews · 13.4K subscribers · Sept 2024

Skill Trident Z5 RGB DDR5 RAM and reveal why it might not be the best choice for your build. Spoiler alert: it's not just about the flashy RGB! Join us for 6 shocking reasons you should consider other options before splurging on this RAM. Don't let the style fool you!

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UK Pro Reviewer UK Pro Reviewer · 4.6K subscribers · Jun 2024

Upgrade to the next generation of DDR5 RAM and unlock unparalleled speed and efficiency with G.SKILL's Trident Z5 RGB Series – the ultimate choice for high-performance computing.

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MyBestOn MyBestOn · 283 subscribers · Jan 2026

Overall, the G.SKILL Trident Z5 RGB DDR5 RAM kit represents a top-tier choice for users looking to future-proof their systems with cutting-edge memory technology. Its combination of speed, capacity, and aesthetics makes it a compelling option for enthusiasts and professionals alike.

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Prashov Adhikari Prashov Adhikari · 4 subscribers · Jun 2026

For a gamer who only plays at 1080p or 1440p and isn't planning to push the envelope with massive texture packs, the extra capacity might feel like overkill. You could be fine with a 32 GB kit that runs at slightly lower speeds and save a few hundred dollars.

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Frequently asked questions

It ranks #6 of 15 on our RAM tier list, in B tier. That placement draws on 4 independent outlets.

It can, but it was not built for them. The kit carries only an Intel XMP profile, which AMD boards may show as DOCP or A-XMP. Tom's Hardware got good results on a Ryzen 7 7700X, where 6400 MT/s sat at the edge of what the chip could run at a 1:1 ratio. TechPowerUp warns that DDR5-6400 and above at 1:1 is out of reach for many AM5 users.

Yes, one. Out of the box the kit boots at 4800 MT/s. Enable its XMP profile in the BIOS and it switches to 6400 MT/s at 32-39-39-102 and 1.40V. Tom's Hardware notes the profile sets the timings and voltage itself. G.Skill adds that reaching the rated speed depends on your motherboard and CPU.

G.Skill lists the Trident Z5 RGB at 44mm (1.73in). Tom's Hardware measured 42mm and Guru3D 43mm, so plan around G.Skill's 44mm figure. If a large air cooler overhangs your memory slots, compare that with the memory clearance its maker lists.

Not for gaming alone. PC Gamer says games do not need 64GB yet and it will not raise frame rates. The capacity pays off in memory-hungry apps and heavy multitasking, and Tom's Hardware saw it beat faster DDR5-7200 kits in Adobe Premiere.

Probably a little. All three reviewers of the white version reached DDR5-6800. TechPowerUp got there at the stock profile voltage, while Tom's Hardware and Guru3D raised it from 1.40V to 1.45V. Guru3D stresses that overclocking results are never guaranteed and may vary.