SanDisk Optimus GX Pro 8100 8TB SSD Review — the undisputed king of high-capacity PCIe 5.0 SSDs

Tom's Hardware Verdict The SanDisk Optimus GX Pro 8100 is a top-tier drive with excellent performance, exceptional random read latency, and good power efficiency. $2,799.99 at Amazon $2,799.99 at Newegg Check Best Buy Pros + Up to 8TB of PCIe 5.0 goodness + Exceptional random read latency + High all-around performance + Very good power efficiency Cons - Price Best picks for you Best SSDs 2026: From blazing-fast M.2 NVMe down to budget SATA The Best PS5 SSDs in 2026: Speedy NVMe storage for your console The best SSD for the Steam Deck, Xbox ROG Ally, and Ally X in 2026 Why you can trust Tom's Hardware Our expert reviewers spend hours testing and comparing products and services so you can choose the best for you. Find out more about how we test . Go to page: SanDisk Optimus GX Pro 8100 Introduction Page 1: SanDisk Optimus GX Pro 8100 Introduction Page 2: SanDisk Optimus GX Pro 8100 8TB Performance Results What we have today is the WD Black SN8100 by another name, with one very important and exciting change: it’s 8TB. This puts the SanDisk Optimus GX Pro 8100 on an entirely different plane, as it delivers a capacity everyone wants with insanely fast hardware. The 2TB Black SN8100 that we reviewed previously was a pleasant surprise given its high power efficiency, but its absurdly low random read latency remains the real draw. Can all this goodness be repeated at 8TB with a new SKU firmly under the SanDisk name? And will anyone be able to afford it? The previous 8TB champion, the WD Black SN850X , still remains interesting from a value perspective – if you can call current prices a value in any circumstance – but we’ve had a hard time finding high-end PCIe 5.0 drives at this capacity. The only one we’ve reviewed is the 8TB Samsung 9100 Pro, which, if you missed it when it was on sale, is probably promoting a stinging sensation right now. We’ve been promised an 8TB SKU of the Kingston Fury Renegade G5 – which has the same hardwar