INTRODUCTION

    Unlike PCIe 3.0 Gen3 and 4.0 Gen4 based M.2 NVMe solid state drives PCIe 5.0 Gen5 models have faced serious thermal issues from the very start and was obviously something many of us expected. This was of course due to the extraordinary read & write speeds the PCIe 5.0 interface was able to deliver making it impossible for the NAND controller (primarily) to keep cool even with a large M.2 heatsink over it. Yes, going from 2000-25000MB/s (Gen3 SSDs) to 5000-7500MB/s (Gen4 SSDs) wasn't easy either (which is why Gen4 drives came in two waves) but surpassing the 10000MB/s (10GB/s) barrier (with over 12GB/s being the end goal) was clearly something entirely different. So, just like with Gen4 drives Gen5 ones will also be coming out in waves and after reviewing the T700 model with heatsink by Crucial today with me i have the T705 model with heatsink.

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    Unlike the T700 the new T705 line of PCIe 5.0 Gen5 M.2 NVMe SSDs by Crucial is currently available either with or without a black or white (limited edition) aluminum and nickel plated copper heatsink and in 3 different capacities (1/2/4TB). Strangely enough however at first glance everything else seems to remain the same between the T700 and T705 with the client-grade PS5026 (E26) PCIe 5.0 Gen5x4 NAND flash controller by PHISON being at the center alongside Micron's 232-layer 3D TLC NAND flash (B58R) and LPDDR4 DRAM (1GB per TB of NAND flash). One thing has changed however and that's no other than the speed of the 232-layer NAND flash used with the T705 which thanks to Micron advancements can now reach 2400MT/s as opposed to the 2000MT/s of the one used in the T700. With this the 1TB variant of the brand new T705 can surpass 13GB/s in reads (10GB/s in writes) whereas the 2/4TB variants can surpass 14GB/s in reads (12GB/s in writes). Once again, the 8-channel (32 CEs) dual-CPU (ARM Cortex-R5) E26 NAND flash controller by PHISON is NVMe v2.0 compliant, features Pison’s 5th generation LDPC ECC & RAID ECC together with SmartECC (RAID ECC), End-To-End Data Path Protection, TRIM and AES 256-bit encryption (with SHA 512 and RSA 4096) and supports Toggle 5.0, ONFi 5.0 and TCG Opal 2.0. Crucial typically covers the entire T705 line of Gen5 SSDs with a 5-year limited warranty and reports a TBW (Terra Bytes Written) of 600 for the 1TB model, 1200 for the 2TB model and 2400 for the 4TB model.