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The Legend 970 Pro uses an InnoGrit IG5666 controller making it one of the first consumer PCIe Gen 5 SSDs to move beyond the Phison E26 that has dominated the Gen 5 market since its introduction. The IG5666 is InnoGrit's first client-focused PCIe Gen 5 controller, built on a 12nm TSMC process with eight ARM Cortex-R5 cores and NVMe 2.0 support, capable of accessing NAND flash at up to 2,400MT/s. It supports LDPC ECC, DRAM cache, and the PCIe 5.0 x4 interface. The controller is paired with Micron 232-layer 3D TLC NAND the same generation of flash used in the best Phison E26 drives, and 2GB of Samsung DDR4-2666 DRAM cache for fast mapping table management.
What makes the Legend 970 Pro stand out most clearly is its cooling design. While virtually all Gen 5 SSDs with active fans require external power through a SATA power connector or a PWM header, ADATA engineered a voltage conversion circuit on the PCB which generates the 12V needed for the fan from 3.3V, using a step-up controller eliminating all cable mess. This directly addresses the most practical frustration with the standard Legend 970, which required a separate SATA power cable. The double-layered aluminium heatsink with integral air ducts and built-in micro fan is designed to support installation in tight spaces where oversized bulky heatsinks cannot fit.
The Legend 970 Pro carries a 740TBW endurance rating per 1TB of capacity a generous step up from the 600TBW per TB seen on most competing Gen 5 drives. Across our entire SSD range, 740TBW is the highest figure available at 1TB capacity. ADATA backs this with a 5-year limited warranty a strong long-term commitment on a premium PCIe 5.0 drive.
The IG5666 delivers strong sequential numbers and excellent random write performance. Synthetic 4K random I/O performance is highly impressive even tested at 85% drive capacity, not empty. However, independent reviews note that the 1TB model does not consistently reach its peak rated sequential read speed of 14,000MB/s, delivering approximately 13,000MB/s in testing still outstanding, but worth knowing. Power consumption is notably higher than newer-generation controllers like the SM2508 used in the Crucial T710, making this drive better suited to high-performance desktop builds than thermally constrained systems.
The Legend 970 Pro uses a variety of data protection and error correction technologies alongside SLC caching to improve TBW and durability. It features LDPC error correction and AES 256-bit encryption to ensure data accuracy and file security. ADATA's SSD Toolbox provides drive health monitoring, firmware management, S.M.A.R.T. data, and benchmarking, alongside the Backup ToGo migration utility.
PCIe Gen 5 slot required full performance requires a PCIe 5.0 M.2 slot. The drive is backwards compatible with PCIe 4.0 at approximately half the rated speeds. Compatible with Intel 13th/14th Gen and AMD Ryzen 7000-series platforms with Gen 5 M.2 support.
Cable-free fan the active cooling fan is powered directly by the SSD's on-board voltage converter. No external SATA cable or PWM header is needed a significant improvement over the standard Legend 970.
1TB performance note the 1TB Legend 970 Pro delivers approximately 13,000MB/s sequential read and 5,8009,500MB/s write in independent testing, below the 14,000/11,000MB/s headline figures which apply to the 4TB model. If maximising sequential throughput at 1TB is the priority, the Crucial T710 1TB offers higher measured sequential speeds at this capacity.
Power consumption the IG5666 draws more power than the SM2508 in the Crucial T710. This drive is designed for high-performance desktop builds with good airflow and is not suited to thermally constrained systems or laptops.
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