Skip to content

300,000+ products in stockAI infrastructure + enterprise IT hardware. Genuine product, full manufacturer warranty.

P73355-B21: HPE EPYC 9745 2.4GHz 128 Core Socket SP5 Server CPU

MPN: P73355-B21|By: HPE

HPE EPYC 9745 2.4GHz 128 Core Socket SP5 Server CPU

Price

Quoted on request

Current pricing within 48 business hours.

In Stockships worldwide

Key specs

Processor Family
EPYC 9745
Core Count
128
Clock Speed
2.4GHz
CPU Socket
Socket SP5
All specifications
Condition:
New (authorized channel)
Warranty:
Full manufacturer warranty

Get pricing and availability

Email + WhatsApp so we always reach you.

Prefer your own inbox? Email us about this part

Have questions?

Talk to a hardware specialist.

WhatsAppEmail

Bulk order? Request volume pricing

  • Authorized & warrantied

    Sourced through authorized distribution, with the full manufacturer warranty.

  • Compatibility checked

    Validated against your server platform before dispatch.

  • Delivery & lead time

    Confirmed with your quote, including expedited freight where available.

  • Business & public sector

    POs, net terms and volume pricing for qualified organizations, government and edu.

Product overview

HPE lists P73355-B21 as an EPYC 9745 2.4GHz 128 Core socket SP5 Server CPU. A processor upgrade is constrained by socket, chipset and BIOS revision, and a mismatched stepping will not post. This part is 128-core. We check the platform's supported-CPU list against your service tag before quoting.

Ask for the datasheet and firmware notes with the quote; we would rather you check our claim than take it.

Specifications

General

Manufacturer part number
P73355-B21
Processor Family
EPYC 9745
Product Type
Server Processors
Manufacturer
HPE

Technical specifications

Core Count
128
Clock Speed
2.4GHz

Interfaces & connectivity

CPU Socket
Socket SP5

Specifications for P73355-B21 as published by HPE. Where a value is absent it is because we could not verify it, not because it does not exist. Ask and we will check.

Where the HPE P73355-B21 is deployed

  • Like-for-like replacement of P73355-B21 in an existing system
  • Populating the second socket on a single-CPU server
  • Consolidating licensed workloads onto fewer, larger cores

Who this part is for

  • Integrators building to a specified CPU model and stepping
  • Procurement sourcing a like-for-like CPU replacement under fault
  • Engineers matching a second socket to the processor already fitted

What you get ordering this from us

Ordered by part number

P73355-B21 is what is quoted and P73355-B21 is what ships; where an alternate code is genuinely the same part we name it rather than swap it silently.

Volume pricing

The listed price is per unit; tiered pricing applies at quantity and purchase orders are accepted.

BIOS revision checked

We confirm the firmware level the platform needs to recognise this processor, because a chip the BIOS does not know will not post.

Questions buyers ask about this part

Is P73355-B21 genuine and is the warranty intact?

Yes. Supplied new and unopened, so the manufacturer warranty and firmware update path stay supported. No grey-market stock and no refurbished units sold as new.

Will P73355-B21 work in my server?

Send the service tag. We check the platform's supported-CPU list and the BIOS revision it requires, and where the board is dual-socket we confirm what is in the other socket. A stepping the firmware does not recognise will not post.

Do you accept purchase orders and quote at volume?

Yes. Purchase orders are accepted from qualified organisations, net terms are available on approval, and tiered pricing applies at quantity. Tell us how many you need.

Compare other Server Processors we stock

ModelBrandKey specAvailabilityFrom
Intel Xeon Silver 4410Y 12-Core Server Processor LGA 4677 Sapphire RapidsIntelCores / Threads: 12C / 24TIn Stock$715
AMD EPYC 9124 16-Core Server Processor Socket SP5 GenoaAMDCores / Threads: 16C / 32TIn Stock$1,430
Dell Xeon Silver 4310 12-Core Processor Kit with Heatsink for PowerEdge ServersDell TechnologiesCores / Threads: 12C / 24TIn Stock$545
HP Xeon E5-2620 v2 6-Core Processor Kit with Heatsink for ProLiant Gen8 ServersHPCores / Threads: 6C / 12TIn Stock$55
Lenovo ThinkSystem Xeon Silver 4310 12-Core Processor Option Kit with HeatsinkLenovoCores / Threads: 12C / 24TIn Stock$540
Noctua NH-U14S TR5-SP6 140mm CPU CoolerNoctuaCPU Socket: SP6In StockRequest quote

Browse all Server Processors or everything we stock from HPE.

Specifying a system, not just the part?

On a training or inference node the host CPU is sized around the accelerators it feeds, not chosen on its own.