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Deal.ai › HP
HP
P04855-L21 HP 2.0GHz 64MB L3 Cache Socket SP3 AMD EPYC 7401P 24-Core Processor
HP

P04855-L21 HP 2.0GHz 64MB L3 Cache Socket SP3 AMD EPYC 7401P 24-Core Processor

Best price now

$195.00at AmazonChecked Nov 12

Compared across 2 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. As an Amazon Associate, Deal.ai earns from qualifying purchases.

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Price facts

  • Last seen at $195.00 at Amazon on Nov 12.
  • Checked at 2 stores.

Our take on the P04855-L21 HP 2.0GHz 64MB L3 Cache Socket SP3 AMD EPYC 7401P 24-Core Processor

The HP P04855-L21 is an HP-branded AMD EPYC 7401P, a first-generation EPYC server CPU with 24 cores and 48 threads on the SP3 socket. It runs at a 2.0 GHz base clock and carries 64 MB of L3 cache, which helps with virtualization and memory-heavy workloads. It suits single-socket servers doing consolidation, database and general compute work. Against newer EPYC generations it gives up per-core speed and PCIe 4.0, but it offers far more cores than the Xeon Silver chips it was typically bought against.

Best forSingle-socket virtualization hostsBudget 24-core server buildsReplacing a failed EPYC 7401P in an existing HP serverMemory-heavy database and general compute workloads
Pros
  • 24 cores and 48 threads in one SP3 socket
  • 64 MB L3 cache eases memory latency
  • 2.0 GHz base clock holds up under sustained all-core load
  • Eight memory channels and 128 PCIe 3.0 lanes on the platform
  • Drops into existing SP3 boards and HP servers
Cons
  • First-generation EPYC: lower IPC and clocks than later EPYC
  • PCIe 3.0 only, no PCIe 4.0
  • 180 W TDP needs server-grade cooling and airflow
  • No integrated graphics and no unlocked multiplier
  • Older platform means older BIOS and firmware support

P04855-L21 HP 2.0GHz 64MB L3 Cache Socket SP3 AMD EPYC 7401P 24-Core Processor prices at every store

  • E Tech DevicesNew

    In stockReturn policy

    $1,645.45Checked Nov 12
    Visit E Tech Devices
  • AmazonNew

    Availability unknown

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

    $195.00Free shippingChecked Nov 12
    Visit Amazon

Store links may earn us a commission.

P04855-L21 HP 2.0GHz 64MB L3 Cache Socket SP3 AMD EPYC 7401P 24-Core Processor price history

Lowest price we've seen: $195.00 on Nov 12 at Amazon. Tracked across 1 store since Nov 12.

What reviewers say

Owner feedback on the EPYC 7401P centers on its core count per socket and steady all-core behavior in virtualization and database hosts. Buyers of used units note that it runs hot and needs proper server cooling.

What people mention
  • PerformancePraisedOwners say the 24 cores and 64 MB cache handle many VMs and parallel jobs well.
  • HeatCriticisedSustained loads push temperatures up, so adequate server cooling matters.
  • Single-thread speedCriticisedPer-core performance is behind newer EPYC and Xeon parts for latency-sensitive work.
  • PlatformMixedSP3 boards are plentiful and cheap, but BIOS and firmware support is aging.

About the P04855-L21 HP 2.0GHz 64MB L3 Cache Socket SP3 AMD EPYC 7401P 24-Core Processor

The HP P04855-L21 is an AMD EPYC 7401P processor for server workloads. It has 24 physical cores with a base frequency of 2.0 GHz, which supports multitasking and parallel processing.

It uses the SP3 socket platform and is compatible with a range of high-density server motherboards. A 64 MB L3 cache supports fast data access and reduces memory latency in compute-intensive applications.

Brand
HP
Part number
P04855-L21
Processor
AMD EPYC 7401P
Cores
24 physical cores
Base frequency
2.0 GHz
L3 cache
64 MB
Socket
SP3

Questions and answers

Is the EPYC 7401P still worth it for a home lab?
Yes if you need many cores cheaply and can cool a 180 W chip. For latency-sensitive or single-thread work, a newer lower-core CPU is a better fit.
What socket and motherboard does it need?
It uses AMD's SP3 socket (LGA 4094) and first-generation EPYC server boards. It does not fit consumer AM4 or TR4 boards.
How does it compare with the EPYC 7301 or 7351P?
The 7401P has 24 cores at 2.0 GHz, more than the 16-core 7301 and 7351P. The 7351P has a higher base clock but fewer cores.
Does it support ECC memory and how many channels?
Yes. The EPYC platform supports ECC DDR4 across eight memory channels, up to 2 TB per socket on supported boards.
What is in the box?
The processor itself. Heatsinks, mounting hardware and thermal paste are not included and must match the SP3 server chassis.
Does it have integrated graphics?
No. You need a discrete GPU or a server board with BMC video for display output.
Where is the P04855-L21 HP 2.0GHz 64MB L3 Cache Socket SP3 AMD EPYC 7401P 24-Core Processor cheapest?
At Amazon, for $195.00, as of our latest check.
Where can I buy the P04855-L21 HP 2.0GHz 64MB L3 Cache Socket SP3 AMD EPYC 7401P 24-Core Processor?
2 stores we checked sell it, including E Tech Devices, Amazon.

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