Samsung Galaxy S27 leak: 12GB RAM across the board, new Pro tier, but LPDDR6 is not guaranteed
Samsung's Galaxy S27 series is still months away, but leaked memory configurations already tell a clear story: 8GB RAM is gone from every model, a new Pro tier enters the lineup for the first time in years, and faster LPDDR6 memory is on the table — though component costs could force Samsung to walk that back before launch. The phones are expected in February 2027, with no confirmed US or UK pricing yet.
More RAM, new model
Insider Tarun Vats, citing supply-chain source Lanzuk (also known as yeux1122), reports that the base Galaxy S27 will start at 12GB RAM with 256GB or 512GB storage options. The Galaxy S27+ gets the same configuration. That's a 50% jump over the 8GB entry point Samsung held until now.
The bigger news is the Galaxy S27 Pro. Long-rumored, this compact-sized model sits between the Plus and Ultra in specs rather than size — it also ships with 12GB RAM but tops out at 1TB of storage. It's the first time Samsung has offered a phone at this tier since the S20 era, per Android Authority. The S27 Pro is also expected to bring a meaningful battery upgrade alongside the spec bump.
At the top, the Galaxy S27 Ultra offers two configurations: 12GB RAM with 256GB or 512GB storage, or a premium 16GB RAM with 1TB. That mirrors what the S26 Ultra already offered, so the top-tier ceiling stays the same.
Galaxy S27 Series RAM Storage leak!
— Tarun Vats (@tarunvats33) September 24, 2026
• S27 — 12GB + 256/512GB
• S27+ — 12GB + 256/512GB
• S27 Pro — 12GB + up to 1TB
• S27 Ultra — 12GB + 256/512GB, 16GB + 1TB
S27 Pro Ultra could also get LPDDR6 + UFS 5.1. ?
Info via Lanzuk pic.twitter.com/II34EHikpb
The LPDDR6 question
The more interesting detail is memory type, not just capacity. Samsung has validated LPDDR6 RAM running at 10.7 Gbps — a 37% bandwidth jump over LPDDR5X — with 21% better power efficiency, according to SamMobile. That efficiency gain matters most for on-device AI tasks, which increasingly run in the background on flagship phones.
The plan is to target LPDDR6 and UFS 5.1 storage for the Pro and Ultra. But there's a real risk it doesn't happen. Component costs — including a reported 50% price premium for Micron's LPDDR6 chips over Samsung's in-house production — may force a fallback to LPDDR5X and UFS 4.0 for some or all models. That would make LPDDR6 a paper spec rather than a shipping reality.
What to watch
Yeux1122 has a strong track record — correctly calling iPhone 16 specs and Samsung foldable details well ahead of announcement. That lends weight to these configurations. Still, the LPDDR6 situation is genuinely unresolved, and worth tracking as launch approaches.
If you're weighing up the wider flagship field, Xiaomi's 18 Pro just launched with LPDDR6 as standard, which adds pressure on Samsung to follow through. For anyone wondering whether the RAM jump actually matters day-to-day, our guide on how much RAM you actually need breaks it down.
