Intel Xeon 6503P-B Processor
Intel Xeon 6503P-B Processor
The Intel Xeon 6503P-B is a server/workstation processor with 12 cores, launched in February 2025, at an MSRP of $934. It is part of the Xeon 6 lineup, using the Granite Rapids-D architecture with BGA 4368. Thanks to Intel Hyper-Threading the core-count is effectively doubled, to 24 threads. To further increase overall system performance, up to two Xeon 6503P-B CPUs can work together in a multi-processor (SMP) configuration. Xeon 6503P-B has 48 MB of L3 cache and operates at 2000 MHz by default, but can boost up to 3.5 GHz, depending on the workload. Intel is making the Xeon 6503P-B on a 5 nm production node, the transistor count is unknown. The multiplier is locked on Xeon 6503P-B, which limits its overclocking potential.
With a TDP of 110 W, the Xeon 6503P-B consumes a lot of power, so good cooling is definitely needed. Intel’s processor supports DDR5 memory with a quad-channel interface. The highest officially supported memory speed is 4800 MT/s. ECC memory is supported, too, which is an important capability for mission-critical systems, to avoid data corruption. For communication with other components in the computer, Xeon 6503P-B uses a PCI-Express Gen 5 connection. This processor lacks integrated graphics, you might need a graphics card.
Intel® Xeon® 6503P-B Processor
| Essentials | |
|---|---|
| Product Collection | Intel® Xeon® 6 processors |
| Code Name | Products formerly Granite Rapids-D |
| Vertical Segment | Server |
| Processor Number | 6503P-B |
| Lithography | Intel 3 |
| CPU Specifications | |
| Total Cores | 12 |
| # of Performance-cores | 12 |
| Total Threads | 24 |
| Max Turbo Frequency | 3.5 GHz |
| Processor Base Frequency | 2 GHz |
| Cache | 48 MB |
| TDP | 110 W |
| Supplemental Information | |
| Marketing Status | Launched |
| Launch Date | Q1’25 |
| Servicing Status | Baseline Servicing |
| Embedded Options Available | Yes |
| Use Conditions | Communications Commercial Temp |
| Memory Specifications | |
| Max Memory Size | 1.13 TB |
| Memory Types | DDR5 |
| Maximum Memory Speed | 4800 MT/s |
| Max # of Memory Channels | 4 |
| Intel® Optane™ Persistent Memory Supported | No |
| ECC Memory Supported | Yes |
| I/O Specifications | |
| Integrated LAN | Yes |
| Expansion Options | |
| Max # of DMI Lanes | 8 |
| Scalability | 1S Only |
| PCI Express Revision | 5.0 |
| Microprocessor PCIe Revision | Gen 5 |
| PCI Express Configurations | Up to 1×16+1×4, 2×8+1×4 |
| Max # of PCI Express Lanes | 20 |
| Package Specifications | |
| Sockets Supported | FCBGA4368 |
| TCASE | 85 °C |
| Package Size | 77.5mm x 50mm |
| Advanced Technologies | |
| Intel® vRAN Boost | No |
| Intel® QuickAssist Technology (QAT) | 1 default devices |
| Intel® Dynamic Load Balancer (DLB) | 1 default devices |
| Intel® Data Streaming Accelerator (DSA) | 1 default devices |
| Intel® In-memory Analytics Accelerator (IAA) | 0 default devices |
| Intel® Advanced Matrix Extensions (AMX) | Yes |
| Intel® Speed Select Technology – Core Power | No |
| Intel® Speed Select Technology – Turbo Frequency | No |
| Intel® Speed Select Technology – Performance Profile | No |
| Intel® Speed Select Technology – Base Frequency | Yes |
| Intel® Resource Director Technology | Yes |
| Intel® Optane™ Memory Supported | No |
| Intel® Speed Shift Technology | No |
| Intel® Turbo Boost Technology | 2.0 |
| Intel® Hyper-Threading Technology | Yes |
| Intel® 64 | Yes |
| Instruction Set | 64-bit |
| Instruction Set Extensions | Intel® AMX, Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512 |
| # of AVX-512 FMA Units | 2 |
| Enhanced Intel SpeedStep® Technology | No |
| Integrated Intel® QuickAssist Technology | Yes |
| Intel® Volume Management Device (VMD) | Yes |
| Security & Reliability | |
| Intel® Trust Domain Extensions (TDX) | Yes |
| Intel® QuickAssist Software Acceleration | Yes |
| Intel® Total Memory Encryption – Multi Key | Yes |
| Intel® Total Memory Encryption | Yes |
| Intel® AES New Instructions | Yes |
| Intel® Software Guard Extensions (SGX) | Yes with Intel® SPS |
| Intel® Trusted Execution Technology | Yes |
| Execute Disable Bit | Yes |
| Intel® Boot Guard | Yes |
| Intel® Run Sure Technology | Yes |
| Mode-based Execute Control (MBEC) | Yes |
| Intel® Platform Firmware Resilience Support | Yes |
| Default Maximum Enclave Page Cache | 512 GB |
| Intel® Crypto Acceleration | Yes |
| Intel® Virtualization Technology (VT-x) | Yes |
| Intel® Virtualization Technology for Directed I/O (VT-d) | Yes |
| Intel® VT-x with Extended Page Tables (EPT) | Yes |
