Western Digital is ready with the WD Blue SN5100, the successor to the WD Blue SN5000 that the company launched in June 2024. While the SN5000 offered sequential speeds of up to 5.5 GB/s reads and up to 5 GB/s writes for the top 4 TB model; the SN5100 steps up performance, offering up to 6.6 GB/s of sequential reads for even the entry level 500 GB model. For context, the SN5000 only offers up to 5 GB/s sequential reads and up to 4 GB/s sequential writes for its 500 GB model. The drive features an M.2 NVMe Gen 4 x4 interface. The WD Blue SN5100 also sees Western Digital more closely integrate the SanDisk branding with its client-segment SSDs. The main Western Digital brand makes way for SanDisk, while the brand extension WD Blue is retained.