P74503-B21: HPE ProLiant Intel Xeon 6505P 12-Core 2.2GHz 150W Processor Kit
Also listed as: P74503-001, SRNX6 · made by Intel
The HPE P74503-B21 is a 12-core, 24-thread Intel Xeon 6505P processor option kit operating at a base frequency of 2.2 GHz with 48MB L3 cache and a 150W thermal profile. Built for modern high-efficiency rack deployments in compute platforms like the ProLiant DL380, it provides DDR5 memory connectivity and Intel hardware security acceleration. When acquiring used processor kits, verify that the substrate corners and land pads show no gouges or thermal discoloration, and confirm official HPE system packaging.
Specifications
| Part number | P74503-B21 |
|---|---|
| Brand | HPE |
| Made by | Intel |
| Type | CPUs |
| Other numbers | P74503-001, SRNX6 |
| Status | current |
| Cores | 12 |
| Speed | 2.2 GHz base / 4.1 GHz turbo |
| Tdp (W) | 150 |
| Interface | FCLGA4710 (LGA4710) |
| Generation fit | ProLiant Gen11 / Gen12 platforms |
About the P74503-B21
P74503-B21 is HPE's Intel Xeon 6505P 12-core processor option kit, built for modern enterprise compute servers. Based on Intel's Xeon 6 P-core architecture (Granite Rapids), it features 12 performance cores, 24 threads, 48MB of shared L3 cache, and a power-optimized 150W TDP profile operating at 2.2 GHz base and up to 4.1 GHz turbo. Positioned as an energy-efficient entry multi-socket compute engine, it provides advanced vector execution, high-density DDR5 memory channels, and integrated hardware security engines for enterprise virtualization, edge compute nodes, and container clusters.
Compatibility
This processor kit fits the LGA4710 socket (Socket E2) architecture found on HPE ProLiant Gen11 and Gen12 compute platforms including the DL380, DL360, and ML350. The kit includes the processor, thermal interface material, and the appropriate server socket clip. Adding a second CPU to a single-processor chassis also requires adding a matching secondary heatsink, additional chassis cooling fans, and populated memory channels. It is electrically incompatible with Gen10 (LGA3647) and Gen10 Plus (LGA4189) servers. The option code is P74503-B21, with spare number P74503-001.
How to identify a genuine unit
An authentic P74503-B21 processor features laser etching on the integrated heat spreader (IHS) specifying 'Intel Xeon 6505P', the S-Spec code, base frequency (2.2GHz), and manufacturing batch markings. The option kit packaging carries HPE product serial barcodes and tamper-evident seals. Inside iLO 6 under Processors, the chip identifies as an Intel Xeon 6505P with 12 enabled cores, active microcode patch levels, and Intel Software Guard Extensions (SGX) capability.
Buying used
When evaluating second-hand processor kits, inspect the bottom LGA4710 land grid array under magnification to confirm there are no scratched, missing, or shorted gold contact pads. Check that the corners of the green PCB substrate are not bent or delaminated from over-torquing during installation. Ensure the vendor supplies the processor inside an ESD-safe protective clamshell rather than loose foam to prevent pin contact damage during transit.
Reference prices (last 12 months, updated 2026-10-27)
Refurbished: USD 2,450 (1 sighting, Oct 2026)
All sightings
| Seller | Condition | Price | Note | Seen |
|---|---|---|---|---|
| serversupply.com | refurbished | USD 2,450 | seller refurbished / tested | 2026-10-27 |
Prices seen on public listings on the dates shown, before tax and shipping. Not an offer.
Fits these models
Equivalent part numbers
- Intel Xeon 6505P Intel Xeon 6 series P-core enterprise processor
FAQ
What socket architecture does Xeon 6505P use?
It uses the Intel LGA4710 socket (Socket E2) designed for Xeon 6 processors.
Buying or selling P74503-B21?
New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.
Sources
- HPE Compute Processor Options Overview, checked 2026-10-27