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Deal.ai › Hard Drives
5715063535493
Dell 5Y78T 800GB SAS 12Gb/s Mixed Use 2.5-Inch Solid State Drive
5715063535493

Dell 5Y78T 800GB SAS 12Gb/s Mixed Use 2.5-Inch Solid State Drive

Best price now

$650.00at NeweggChecked 2 h ago

50% under what the other stores charge

Compared across 3 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.

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Price facts

  • Lowest price today: $650.00 at Newegg (checked Nov 11, 2026).
  • Checked at 3 stores.

Our take on the Dell 5Y78T 800GB SAS 12Gb/s Mixed Use 2.5-Inch Solid State Drive

The Dell 5Y78T is an 800GB enterprise solid state drive in the 2.5-inch form factor, using a 12Gb/s SAS interface. It is a mixed-use drive, meaning Dell rates it for a blend of read-heavy and write-heavy server work rather than pure read workloads. That makes it a fit for databases, virtualization hosts and caching tiers in PowerEdge and PowerVault systems. Compared with SATA SSDs it doubles the interface bandwidth and adds dual-port failover, but it costs more and needs a SAS controller; against read-intensive SAS drives it trades some endurance headroom for write performance.

Best forServer and storage array upgradesDatabase and virtualization workloadsMixed read/write caching tiersReplacing failed drives in existing Dell arrays
Pros
  • 12Gb/s SAS gives roughly double the bandwidth of SATA SSDs
  • Dual-port SAS supports redundant paths in servers
  • Mixed-use endurance suits steady write traffic
  • 2.5-inch form factor fits most Dell PowerEdge and PowerVault bays
  • Dell part number makes compatibility checks straightforward
Cons
  • Requires a SAS controller; will not work in plain SATA-only laptops or desktops
  • Enterprise pricing is far above consumer SATA SSDs
  • 800GB is small next to multi-terabyte SAS and NVMe drives
  • Mixed-use endurance is below write-intensive enterprise models
  • SAS drives run hotter and need server-grade airflow

Dell 5Y78T 800GB SAS 12Gb/s Mixed Use 2.5-Inch Solid State Drive prices at every store

  • NeweggNew

    In stock

    $650.00Free shippingChecked 2 h ago
    Visit Newegg
  • GotodirectNew

    In stock

    $1,290.68Checked 2 h ago
    Visit Gotodirect
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $8,028.00+ $55.00 shippingChecked 2 h ago
    Visit Amazon

Store links may earn us a commission. Some prices via Klarna.

Dell 5Y78T 800GB SAS 12Gb/s Mixed Use 2.5-Inch Solid State Drive price history

Lowest price we've seen: $650.00 on Nov 11 at Newegg. Tracked across 2 stores since Nov 11.

About the Dell 5Y78T 800GB SAS 12Gb/s Mixed Use 2.5-Inch Solid State Drive

The Dell 5Y78T is an internal 2.5-inch solid state drive with 800GB of capacity. It connects through a SAS 12Gb/s interface.

The drive is rated for mixed use workloads.

Model
Dell 5Y78T
Capacity
800GB
Form factor
2.5 inch
Type
Solid state drive (SSD)
Interface
SAS 12Gb/s
Placement
Internal
Workload
Mixed use

Specifications

Form Factor
2.5"Source
Type
SSDSource
Placement
InternalSource
Size (GB)
800Source
Interface
SAS 12Gb/sSource

Questions and answers

Will this drive work in a regular desktop PC?
Only if the desktop has a SAS host bus adapter. The 12Gb/s SAS connector is not the same as SATA, so it will not plug into a standard SATA port.
Is it compatible with my Dell PowerEdge server?
Check your server's drive carrier and PERC controller support list for the 5Y78T part number. Most 2.5-inch SAS backplanes in recent PowerEdge and PowerVault systems accept it.
What does mixed use mean?
It is a workload rating between read-intensive and write-intensive drives. It handles a balance of reads and writes, which suits databases and virtual machines better than read-optimized SSDs.
How does it compare with a SATA SSD of the same capacity?
The SAS interface offers more bandwidth and dual-port redundancy, which SATA lacks. A SATA drive is cheaper and simpler but has no path failover.
Does it need any special setup?
It is a bare drive, so it ships without a carrier, cable or software. You slot it into a compatible bay and initialize it in your RAID controller or OS.
Where is the Dell 5Y78T 800GB SAS 12Gb/s Mixed Use 2.5-Inch Solid State Drive cheapest?
At Newegg, for $650.00, 50% under what the other stores charge, as of our latest check.
Where can I buy the Dell 5Y78T 800GB SAS 12Gb/s Mixed Use 2.5-Inch Solid State Drive?
3 stores we checked sell it, including Newegg, Gotodirect, Amazon.

Stores we've priced the Dell 5Y78T 800GB SAS 12Gb/s Mixed Use 2.5-Inch Solid State Drive at

  • Newegg deals and prices