Product on Review: XTREEM CKD 8400MHz DDR5
Manufacturer: TEAM GROUP
Street Price: $329 USD | $429 AUD
TeamGroup’s T-FORCE XTREEM CKD DDR5 8400MHz 48GB kit (model FFXD548G8400HC42BDC-CU01) is a cutting-edge memory solution designed specifically for the next generation of high-performance computing. Operating at a blistering 8400MHz with tight CL42-54-54-84 timings at 1.4V, this dual-channel kit delivers a combined 48GB via two 24GB modules, targeting users who need extreme bandwidth without compromising capacity. With a peak theoretical bandwidth of 67,200 MB/s (PC5-67200), it stands out as one of the highest frequency DDR5 kits currently available to consumers.
What sets the XTREEM CKD apart is its use of CUDIMM (Client Unbuffered DIMM) architecture, which incorporates an onboard Clock Driver (CKD) to improve signal integrity and timing accuracy at ultra-high frequencies. This design change departs from traditional unbuffered DDR5 modules and allows for better electrical stability—essential when pushing past 8000MHz. However, this also means platform compatibility is limited: the kit is only supported on Intel Core Ultra processors (formerly codenamed Meteor Lake) and motherboards based on Intel 800-series chipsets that support CUDIMM memory. Users on AMD or earlier Intel platforms will not be able to leverage this memory, regardless of board firmware updates.
In this review, we will evaluate the T-FORCE XTREEM CKD DDR5 8400MHz 48GB kit across a series of synthetic and real-world tests to assess performance scaling. With CUDIMM memory poised to play a larger role in the evolution of DDR5, this review will determine if the XTREEM CKD lives up to its elite specifications and justifies its place in high-end builds.
T-FORCE on their CKD DDR5:
Through the CKD chip, the overall performance and stability could be leveled up, to break new level of overclocking performance of traditional U-DIMMs, securing the smooth system operation under high loading.
