G.Skill (MEMGSK11571)

The G.Skill Ripjaws S5 is a 32GB DDR5 memory kit running at 6400 MT/s with CL32 timings, making it one of the fastest desktop RAM options available. XMP 3.0 setup is reliable on both Intel and AMD platforms, and owners consistently hit the advertised speed. It's pricey and AM5 boot times can be long, but for high-end gaming and workstation builds, it's a top pick.

In our database, this kit lands in the 95th percentile for speed and 88th percentile for latency. That's the absolute best right now for raw bandwidth, and the CL32 latency is a standout for DDR5. In practice, that means games see smoother frame pacing and workstation tasks like video editing or large compiles get a real boost compared to slower DDR5 kits or DDR4.

The XMP 3.0 profile is the star here. Owners consistently report hitting the advertised 6400 MT/s with a single click in BIOS, on both Intel Z790 boards and AMD AM5 setups. The 1.40V voltage is standard for this speed tier. One caveat from our data: if you plan to populate all four DIMM slots, expect to drop speeds. That's a DDR5 platform limitation more than a G.Skill issue, but it's worth knowing before you buy a second kit.

Against the Kingston FURY Beast KF564C32BWEAK2-64, the Ripjaws S5 gives up capacity (32GB vs 64GB) but wins on speed. The Corsair VENGEANCE RGB CMH64GX5M2Y6400C32 matches the speed and adds RGB plus double the capacity, but you'll pay for it. The Crucial Pro Overclocking CP2K16G64C32U5B is a closer spec match at 32GB and 6400 MT/s, and Crucial's reputation for compatibility is strong. The Team Group T-CREATE EXPERT and KLEVV CRAS V are also in the same speed tier, but the G.Skill's XMP reliability gives it an edge for set-and-forget builders.

If you're deciding between this and a 6000 MT/s kit, the real question is whether your CPU can even use the extra bandwidth. For gaming on a 13900K or Ryzen 7000 series, the difference is measurable but not massive. For productivity work, the faster kit earns its keep more often.

Value is the one area where this kit takes a hit. It sits in the 17th percentile for affordability, which means it's one of the pricier options in our database. US pricing ranges from USD 600 to USD 721 across three listings, and Newegg has the best deal at the lower end of that spread. Canadian buyers see an even wider gap, from CAD 600 to CAD 1,356 across four listings, so shopping around matters a lot. For the speed and latency you get, it's not a bad deal, but if you don't need 6400 MT/s, a 5600 or 6000 MT/s kit will save you real money.

The G.Skill Ripjaws S5 is a 32GB (2 x 16GB) DDR5 memory kit aimed at builders who want fast RAM without RGB tax or fancy heat spreader designs. It runs at 6400 MT/s with CL32 timings, which puts it near the top of the charts for DDR5 desktop memory right now. The kit is unbuffered, uses Intel XMP 3.0, and targets Z690/Z790 platforms, though AMD AM5 boards handle it fine too.

People searching for DDR5 6400 RAM for gaming or workstation builds will find this kit checks a lot of boxes. The 32GB capacity is the sweet spot for most users in 2025, and the speed is high enough that you won't leave meaningful performance on the table with a modern CPU. It's not the cheapest DDR5 kit out there, but it's also not pretending to be budget RAM.

One thing to know up front: this is a no-frills kit. No RGB, no aggressive styling, just black heat spreaders and a 288-pin design. If you want your RAM to glow, look elsewhere. If you want it to work, keep reading.

Skip this kit if you're building a budget system or don't need bleeding-edge memory speed. A 5600 or 6000 MT/s DDR5 kit will save you meaningful money and still handle gaming and everyday work fine. Also skip it if you need 64GB or more right now, since you'd be better off with a 2 x 32GB kit like the Kingston FURY Beast or Corsair VENGEANCE RGB. RGB enthusiasts should look at the Corsair kit instead. And if you're building a server or running memory-intensive enterprise workloads, this isn't the right tool, our data shows server performance is a weak spot for this kit.

Should you buy the G.Skill Ripjaws S5 32GB DDR5 6400 kit? If you want top-tier DDR5 speed with reliable XMP and don't care about RGB, yes. It's one of the best DDR5 kits on the market for gaming and workstation use, and the 4.5/5 rating across 362 reviews backs that up. The main reasons to hesitate are price and the AM5 boot time quirk.

For most builders, this is a buy once, forget about it kind of kit. Set XMP, confirm the speed, and move on with your life. That's exactly what you want from RAM.