Intel Xeon 6747P VS Intel Xeon 6748P

Both the Intel Xeon 6747P and Xeon 6748P share a strong common foundation: both are built on a 3 nm process node, support PCIe 5.0, are fully 64-bit compatible, and neither includes integrated graphics — making them pure compute-focused server processors where a discrete or external GPU is assumed for any graphics workload.

The most notable differentiator in this group is thermal behavior. The 6747P carries a higher TDP of 330W versus the 6748P's 300W, meaning it draws more power under load and will demand more from cooling infrastructure and power delivery systems. Conversely, the 6748P tolerates a higher maximum CPU temperature of 102 °C compared to the 6747P's 94 °C — suggesting it is designed with greater thermal headroom before throttling or shutdown, which can be an advantage in thermally constrained or high-ambient-temperature environments.

In terms of general platform characteristics, these two processors are nearly identical. The key trade-off lies in power versus thermal ceiling: the 6747P consumes more power, while the 6748P handles heat more permissively. For operators prioritizing energy efficiency and power budget, the 6748P holds a measurable edge here; however, those running in well-cooled, power-unconstrained data centers may find the thermal ceiling difference negligible in practice.

At the core level, both the Xeon 6747P and Xeon 6748P field the same 48 cores and 96 threads, and share identical L1 and L2 cache configurations — 5376 KB and 96 MB respectively — making them equivalent in thread-level parallelism and mid-level cache responsiveness. The meaningful divergence appears in base clock speed, turbo behavior, and critically, L3 cache size.

The 6747P starts at a higher base of 2.7 GHz versus the 6748P's 2.5 GHz, which benefits sustained, non-turbo workloads such as batch processing or consistently loaded server tasks. The 6748P, however, peaks higher in turbo at 4.1 GHz compared to the 6747P's 3.9 GHz, giving it an edge in latency-sensitive or bursty workloads where individual cores can boost aggressively. Neither chip offers an unlocked multiplier, so these clocks are fixed boundaries.

The most consequential gap in this group is L3 cache: the 6747P offers a substantial 288 MB of L3 (6 MB/core), while the 6748P comes in at 192 MB (4 MB/core). In data-intensive server workloads — databases, in-memory analytics, large working-set applications — a larger L3 dramatically reduces main memory round-trips, which are orders of magnitude slower. This gives the 6747P a clear performance edge for cache-sensitive applications, making it the stronger choice for throughput-heavy enterprise workloads despite its lower turbo ceiling.

On the memory front, these two processors share a near-identical platform: both support DDR5 with 8 memory channels, cap out at 4000 GB of maximum addressable RAM, include ECC support for error-correcting reliability critical in server environments, and operate at the same 24 GT/s bus transfer rate. For most deployment scenarios, this parity means identical memory infrastructure and cost planning.

The sole differentiator here is maximum RAM speed: the 6747P supports up to 8000 MHz, while the 6748P tops out at 6400 MHz. In memory-bandwidth-sensitive workloads — think large-scale in-memory databases, real-time analytics, or HPC applications that continuously stream data between CPU and RAM — higher memory frequency directly translates to more data throughput per second. The 6747P's ceiling is meaningfully higher, and when paired with compatible high-speed DDR5 modules, it can sustain greater bandwidth across all eight channels simultaneously.

For general-purpose server workloads that are not memory-bandwidth-bound, this difference will go largely unnoticed. But for operators running latency-sensitive or data-streaming applications where memory speed is a known bottleneck, the 6747P holds a clear advantage in this category — its higher RAM speed ceiling offers tangible headroom that the 6748P simply cannot match.

Across every feature spec in this group, the Xeon 6747P and Xeon 6748P are completely identical. Both support multithreading, share the same instruction set extensions — including AVX2, FMA3, AES, and SSE 4.2 among others — and both implement the NX bit for hardware-level memory protection against code-execution exploits.

The practical implication is that software compiled or optimized for one will run identically on the other. The presence of AES acceleration means cryptographic workloads are hardware-offloaded on both chips, AVX2 and FMA3 enable efficient vectorized math for scientific and AI inference tasks, and the shared SSE 4.x support ensures broad compatibility with optimized libraries across virtually all enterprise software stacks.

This group offers no basis for differentiation — the two processors are fully tied on features. Any decision between them must rest entirely on the differences surfaced in other specification groups, such as cache size, clock speed, or thermal characteristics.