Rank #4 in Best DDR5 RAM 2026: 10 Kits Ranked, and the £184 Gap Between Two CL30 Kits
Crucial Pro DDR5 32GB (2x16GB) 6400MHz CL32
Price and rating as shown on Amazon when we collected them. Both change.
The Crucial Pro DDR5 32GB kit (2x16GB) is the kit at number four in this guide, and it is the odd one out on speed: nine of the ten kits here run at 6000MHz, while this one is listed at 6400MHz. It is CL32 at 1.35V, sold as two 16GB DIMMs, and priced at £448.98. Across 540 ratings it holds 4.6 out of 5.
What stands out on this particular listing is that the numbers hold together. The title says 6400MHz, the Memory Speed field says 6400 MHz, the Data Transfer Rate field says 6400 MHz, and the first bullet says "up to 6400MHz at CL32". The title says 32GB (2x16GB), RAM Size says 32 GB, and the listing files 2 items of 16GB each. That is not a given in this guide: elsewhere, a first bullet advertises 8400MT/s for a kit whose own title says 6000MHz. The one wobble here is colour — the title names Black, while the fourth bullet offers "Snow Fox White or Stealth Matte Black camo". On price it sits between the two 32GB 6000MHz CL30 kits in the guide: £38.99 above the £409.99 one and £145.01 below the £593.99 one, which is the premium you pay for the extra 400MHz. Everything on this page comes from the Amazon listing, not from testing we carried out.
How those 540 ratings break down
An average hides its own shape. This is the spread behind the 4.6 stars.
Specification
Exactly as published on the Amazon listing, field for field.
| Price | £448.98 |
|---|---|
| Rating | 4.6 out of 5, from 540 ratings |
| Memory Speed | 6400 MHz |
| Kit size | 32 GB (2x16GB); 2 items of 16 GB each |
| Column Address Strobe Latency (as listed) | CL32 |
| Tested timings (as listed) | 32-40-40-103 |
| Voltage | 1.35 V |
| Star breakdown (as listed) | 82 of the 100 ratings shown are 5-star, 5 are 1-star, against 540 ratings quoted |
What buyers actually say
Quoted from customer reviews on Amazon
Verified purchase“Installed easily and ran at full 6400MHz with XMP enabled. Excellent stability and performance in gaming and multitasking. 32GB is more than enough for modern titles and background applications. Great value for the speed and timings.”
Verified purchase“Managed to get in just before prices went crazy (these jumped by £100 by the following week). Weirdly, it was cheaper to import these and pay import fees than to buy in the UK! Shame Crucial are pivoting their focus now, their components were always excellent value for money. The RAM works just fine. I lowered the speeds manually though to 6000 to pair with a 9950x3D for stability reasons.”
What it is up against
The rivals it was ranked against in Best DDR5 RAM 2026: 10 Kits Ranked, and the £184 Gap Between Two CL30 Kits.
Questions people ask
How much does the Crucial Pro 32GB 6400MHz kit cost?
The listing shows £448.98. In this guide that is £38.99 more than the 32GB 6000MHz CL30 kit at £409.99 and £145.01 less than the 32GB 6000MHz CL30 kit at £593.99.
Why is this kit fourth when it is the fastest here?
It is the only kit in the guide listed at 6400MHz, but it is also the most expensive 32GB 6000MHz-or-better kit apart from one. The Crucial Pro gives you 400MHz more than the nine 6000MHz kits for £38.99 over the cheapest of them.
Do the numbers in the Crucial Pro listing agree with each other?
Yes. The title, the Memory Speed field and the Data Transfer Rate field all read 6400 MHz, matching the first bullet's "up to 6400MHz at CL32". RAM Size reads 32 GB, matching the 32GB (2x16GB) in the title, and the listing lists 2 items of 16GB each.
What latency and timings does Crucial quote?
The listing quotes CL32 and extended timings of 32-40-40-103, running at 1.35V. It describes these as ensuring stable overclocking and reduced latency.
Which systems does Crucial say it works with?
Crucial lists Intel XMP 3.0 and AMD EXPO support, and names compatibility with Intel Core Ultra Series 2, Ryzen 9000 Series desktop CPUs and newer.
What colour is the Crucial Pro kit?
The listing is inconsistent here: the product title names Black, while the fourth bullet describes a heat spreader available in Snow Fox White or Stealth Matte Black camo.
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