Side-by-side: Crucial T705 4TB ($613) vs Crucial P310 4TB ($519). $/TB winner, specs, real-world picks for July 2026.
This is a generational matchup at 4 TB: the older-gen drive offers proven reliability and better $/TB, while the newer-gen sibling brings raw bandwidth that most users never tap.
Hardware-wise, the Crucial T705 4TB runs on Phison's E26 silicon, which kicked off the consumer Gen 5 era and typically requires a heatsink. The Crucial P310 4TB pairs the DRAM-less Phison E27T, common in value-tier 2TB and 4TB Gen 4 drives.
Prices favor the Crucial P310 4TB by $23.50/TB ($129.75/TB versus $153.25/TB). Not a huge gap, but enough to be the tiebreaker if performance is similar.
On sequential reads the Crucial T705 4TB pulls ahead by 7,400 MB/s (14,500 MB/s versus 7,100 MB/s). That matters for moving large files but rarely shows up in game loads.
Write speeds skew toward the Crucial T705 4TB: 12,700 MB/s sustained against 6,000 MB/s. Content creators feel this; gamers do not.
The DRAM-vs-HMB question divides opinion: Crucial T705 4TB's on-board DRAM theoretically helps under sustained workloads, while Crucial P310 4TB's HMB approach has matured enough that most users won't see the difference. Pick on price if everything else is similar.
Endurance leans toward the Crucial T705 4TB at 2,400 TBW (versus 1,760 TBW for the Crucial P310 4TB). For most consumers this never becomes a real concern — 600 TBW lasts a decade of normal writes — but heavy daily writers should weight it.
PS5 owners get no measurable benefit from either drive's peak speed because Sony's internal NVMe controller throttles to ~5,500 MB/s; treat Crucial T705 4TB and Crucial P310 4TB as interchangeable here and let price decide. Comparing across generations always invites the same question: does the bandwidth gap convert into user-visible improvements? Honest answer for the Crucial T705 4TB vs Crucial P310 4TB pairing: only for sustained sequential reads of multi-GB files. Video editors will gravitate toward the Crucial T705 4TB for its write headroom (12,700 MB/s sustained). Project saves and proxies move faster, which compounds across a workday. Heads-up — these are full-length 2280 drives. Steam Deck and most current handhelds require shorter 2230 modules, so check capacity-specific 2230 variants if that's your target platform.
Market context: the Crucial T705 4TB ranks #2 of 6 Gen 5 4 TB drives we track by $/TB, while the Crucial P310 4TB ranks #3 of 6 Gen 4 4 TB drives. One of them is genuinely among the cheapest options in its class, so this matchup includes a real value pick.
As of July 27, 2026, these tracked drives undercut both the Crucial T705 4TB and Crucial P310 4TB on $/TB:
Go with the Crucial T705 4TB for meaningfully faster reads (14,500 MB/s), higher sustained writes (12,700 MB/s), a higher TBW endurance rating (2,400 TBW), and a dedicated DRAM cache chip. Crucial's T-series tends to undercut Samsung and WD on price while using comparable Micron silicon — a value play hiding in a flagship form factor.
Go with the Crucial P310 4TB for the lower retail price ($519 vs $613), and better $/TB economics ($129.75/TB).