Crucial Pro DDR5 RAM 64GB Kit (2x32GB) 6400MHz CL40, Overclocking Desktop Gaming Memory, Intel XMP 3.0 & AMD Expo Compatible – Black CP2K32G64C40U5B
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Availability:
Only 3 left in stock, order soon!
Arrives
Saturday, Nov 8
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Size: Black 64GB Kit (2x32GB)
Style: 6400 CL40
Features
- COOL BLACK LOOK & FEEL: Our DDR5 Pro Overclocking Memory features a black, aluminum heat spreader with a unique, origami-based design that is both cool to the touch and an aesthetic win for any rig
- ACCELERATED PERFORMANCE: 6400MHz at CL40 for stable overclocking performance and 25% lower latency for higher frame rates per second. Every millisecond gained in fast-paced gameplay counts
- INTEL & AMD COMPATIBLE: Compatible with Intel Core Ultra series 2 & 13-14th Gen desktop CPUs and above. Also, compatible with AMD Ryzen 9000 Series desktop CPUs and above (Verify compatibility with motherboard manufacturer)
- FLEXIBILITY: By supporting both Intel XMP 3.0 and AMD EXPO on the same module, Crucial offers you ultimate flexibility with your build
- MICRON QUALITY & RELIABILITY: With 45 years of memory expertise, Micron delivers cutting-edge engineering and superior component and module-level testing; including limited lifetime warranty
Description
Push performance to the next level with the blazing speed and massive bandwidth of Crucial DDR5 Pro OC Gaming Memory. With support for next-gen multi-core CPUs and the “sweet spot” speed of up to 6,400MHz, our gaming memory harnesses the power of low latency so you can beat the clock and focus on outplaying your opponent instead of worrying about performance bottlenecks. This powerful, flexible memory supports next-gen multi-core CPUs and stable overclocking with Intel XMP 3.0 and AMD EXPO. Available in black or white in 16GB or 32GB density modules with a unique, origami-inspired aluminum heat spreader for a winning aesthetic. Unlock a new world of gaming performance with Crucial DDR5 Pro Gaming Memory.
Brand: Crucial
Computer Memory Size: 64 GB
RAM Memory Technology: DDR5
Memory Speed: 6400 MHz
Compatible Devices: Desktop
RAM: 64 GB DDR5
Memory Speed: 6400 MHz
Brand: Crucial
Series: Pro DDR5 RAM 64GB Kit 6400MHz Overclocking Desktop Gaming Memory Black
Item model number: CP2K32G64C40U5B
Item Weight: 1.16 ounces
Product Dimensions: 5.37 x 0.31 x 1.37 inches
Item Dimensions LxWxH: 5.37 x 0.31 x 1.37 inches
Color: Black
Voltage: 1.35 Volts
Manufacturer: Crucial
Date First Available: February 17, 2025
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Saturday, Nov 8
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: Black 32GB Kit (2x16GB)
Style: 6400 CL38
I took my time before writing this review because I wanted to thoroughly test the product and make sure it performed well. I purchased this 32GB (2x16GB, 6400 MT/s) Crucial Pro DDR5 RAM kit, and I must say that I am very satisfied. The modules look to be of excellent quality, and installation was very easy. After several months of intensive use, I can confirm that they work wonderfully: PC performance has improved significantly, multitasking is much smoother, and I haven't had a single compatibility or stability issue. In short, this product is 100% recommended for those looking for speed and reliability in their equipment. Crucial continues to prove why it is a trusted brand.
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Reviewed in the United States on September 15, 2025 by Gaby López Gaby López
Size: Black 64GB Kit (2x32GB)
Style: 6400 CL40
I ordered this RAM with the hopes that I would be able to utilized the XMP ability of the Alienware ACT1250. I ordered the system with 16GB of 5200 MT/s with the expectation of immediately swapping it out for a 64GB kit of this 6400 MT/s. Before I even turned on the system for the first time, I swapped out the RAM. I had no issues with the system booting up. I read some people had issues with the ACT1250 booting up to a 4k monitor. I only have a 1440p, so just something to be aware of if you have a higher res monitor. I felt like the look of this ram fits in better with my system with the included black heatsink. The Dell/Alienware is ridiculously picky with it's ability to enable XMP. Supposedly only a Kingston RAM kit that no one can seem to find anywhere online is the only one on their "Dell certified" XMP list. The Dell/Alienware motherboard won't allow XMP to be enabled. This memory runs at 5600MT/s out of the box for my ACT1250. CPU-Z does recognize that it has the ability of the XMP-6400 and XMP-6000 frequency. RAM has been running fine with no errors detected with MemTest86. I've been playing Killing Floor 3 paired with a RTX 5080 and Intel Core Ultra 7 265KF and had no issues at all. I wish I could get the memory running at the speed it was designed for, but that's a ridiculous compatibility mechanism implemented by Dell/Alienware, not Crucial. Screenshots included.
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Reviewed in the United States on August 14, 2025 by John John
Size: White 32GB Kit (2x16GB)
Style: 6400 CL38
I purchased this for a computer I built that was all white. This was my first experience with Crucial RAM and I like it. This product was exactly what I wanted for my computer. For DDR5, you don't need to worry about RAM speed and timing as much as with DDR4. It is worth noting that some people have reported stability problems for RAM above 6000MHz speeds (specifically when using with AMD CPUs), though I have not personally experienced such problems across multiple computers. Also, enable XMP if you want the advertised speeds for the RAM! This RAM is compatible with any DDR5 motherboard. Installation was easy and typical of any other RAM sticks. These are high quality modules, and I liked them so much I bought the 64GB variant for another computer. They look very nice in all white builds. Be aware that there is no RGB on here. With RAM prices on the rise, this is one of the cheaper options I have seen on the market. Overall, I think these are a great option and would recommend purchasing.
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Reviewed in the United States on October 13, 2025 by bart
Size: Black 32GB Kit (2x16GB)
Style: 6400 CL38
Just built a new desktop and used these to replace slightly slower DDR5 Ram. Make sure you enable XMP in Bios to run these at full speed. Very fast and stable. Highly recommended.
Reviewed in the United States on September 5, 2025 by The Voice of Reason
Size: White 32GB Kit (2x16GB)
Style: 6400 CL38
These RAM chips replaced my single 8 GB chips, and I'm much happier with them. These do not have any sort of lighting, so the aesthetic is simple but clean. The performance is good and the ability to over clock the speed is a must. These are easy to install on the motherboard, but they require Intel 13th gen or AMD 9000 series processors to work. These are not compatible with older chips, even if the motherboard can slot them.
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Reviewed in the United States on September 13, 2025 by Shiny Shiny
Size: White 64GB Kit (2x32GB)
Style: 6400 CL40
This Crucial Pro 64GB DDR5 kit at 6400MT/s has been nothing but flawless. I installed it in an AM5 system with a Ryzen 7 9800X3D and X870E motherboard, and it hit its rated speed right away with EXPO enabled — no tweaking needed. Whether I’m gaming, multitasking, or doing heavy AI and creative workloads, this RAM keeps up without breaking a sweat. Temps stay cool, and I’ve had zero stability issues. It’s also low-profile, so it fits easily under my large AIO cooler. Crucial nailed it with this one — top-tier performance, great compatibility, and the peace of mind that comes with a trusted brand. If you want fast, stable DDR5 without the flashy RGB, this is a smart choice.
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Reviewed in the United States on July 30, 2025 by ryan teresi
Size: Black 32GB Kit (2x16GB)
Style: 6400 CL38
I haven't had a single issue with this ram since installation. I set EXPO on and essentially haven't looked back. Ram consistently reports at listed speed and timings. There is _probably_ some space to overclock, but I just don't care when everything is stable and cool.
Reviewed in the United States on October 20, 2025 by Maxx
Size: White 32GB Kit (2x16GB)
Style: 6400 CL38
These DDR5 6400 MHz 32GB modules exceeded our expectations. We bought 4 sticks and they've been absolutely flawless. Incredible speed – The jump to DDR5 6400 MHz is impressive. Boot times are faster, applications load instantly, and overall system responsiveness is top-tier. Runs cool and stable – Despite the high frequency, temperatures stay low even during extended gaming or productivity sessions. Plug & play installation – Installation was effortless. The RAM was recognized instantly by the motherboard with no need for BIOS tweaks (just enabled XMP and done). We highly recommend these for anyone building or upgrading a high-performance PC. After testing four modules, we can confidently say: fast, cool, and worth every dollar.
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Reviewed in the United States on July 8, 2025 by Wilmer Zamora