G.SKILL RipjawsV DDR4 16GB (2x8GB) 4000MT/s CL18 - High-Speed Desktop

In this review of the G.SKILL RipjawsV Series DDR4 16GB kit, the bottom line is simple: it is aimed at desktop builders and gamers who want a matched dual-channel memory kit that can reach high XMP overclocks while remaining affordable. The kit's single biggest selling point is the rated DDR4-4000 CL18-22-22-42 profile at 1.35V, which delivers noticeable responsiveness gains in workloads and gaming when paired with compatible CPUs and motherboards. Installation is straightforward and the included XMP profile simplifies getting to the advertised speed.

Key Features

• Dual-module matched kit: The 2x8GB configuration is sold as a matched set so both modules are tested to run together for stable dual-channel performance.
• High XMP speed: The kit is rated up to DDR4-4000 CL18 at 1.35V, offering tangible latency and bandwidth improvements for gaming and creative applications when XMP is enabled.
• JEDEC and XMP profiles: Ships with a JEDEC default SPD and an Intel XMP overclock profile so it will boot at safe speeds and can be overclocked easily in BIOS.
• Desktop compatibility: Standard 288-pin DDR4 U-DIMM design fits most desktop motherboards that support high-frequency DDR4 modules.
• Stability guidance: G.SKILL advises not to mix kits and to consult the QVL or RAM configurator for validated motherboard compatibility, reducing the chance of instability.

Who It's For

This memory kit suits PC enthusiasts, gamers, and content creators who run mid- to high-end desktop systems and want to squeeze extra memory bandwidth and lower latency from DDR4. It is especially appropriate for users with motherboards and CPUs known to support high-frequency DDR4 and who are comfortable enabling XMP/DOCP/A-XMP in BIOS.

Those who should look elsewhere include users who need ECC for workstation reliability, builders with older or limited motherboards that do not support high DDR4 frequencies, or anyone unwilling to consult compatibility lists; mixing different memory kits is not recommended and can cause instability.

Pros & Cons

Pros

• High rated XMP speed provides measurable performance gains in gaming and some creative tasks.
• Sold as a matched 2x8GB kit to simplify dual-channel setup and improve reliability when used together.
• Easy setup with JEDEC fallback and an Intel XMP profile for one-step overclocking in BIOS.

Cons

• Reaching and maintaining DDR4-4000 depends on motherboard and CPU compatibility, so real-world stability may vary.

Specifications

Model	F4-4000C18D-16GVK
Capacity	16GB (2x8GB)
Speed	DDR4-4000 MT/s (XMP)
Timings	CL18-22-22-42
Voltage	1.35V
Form Factor	288-pin DDR4 U-DIMM
Error Checking	Non-ECC

Our Verdict

The G.SKILL RipjawsV 16GB (2x8GB) DDR4-4000 kit is a sensible choice for gamers and desktop users who want a matched memory set that can reach high XMP frequencies without a large price premium. It is good value when used with compatible motherboards and CPUs, and the included XMP profile makes achieving rated speeds convenient; just be mindful of compatibility and avoid mixing kits for best stability.

Frequently Asked Questions

Will this kit boot without enabling XMP?
Yes, it will boot at the JEDEC default SPD speed with compatible hardware; enabling XMP in BIOS is required to reach the rated DDR4-4000 speed.

Can I mix this kit with other RAM sticks?
G.SKILL recommends not mixing memory kits; they are sold as matched sets and mixing can cause stability issues or system failure.

Does it work with AMD and Intel systems?
Yes, it is DDR4 U-DIMM compatible with both platforms, but reaching the rated XMP speed depends on motherboard and CPU support and may require BIOS adjustments.