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Intel Xeon 6337P
Intel Xeon 6511P

Intel Xeon 6337P Intel Xeon 6511P

Overview

Welcome to our in-depth specification comparison between the Intel Xeon 6337P and the Intel Xeon 6511P. These two server-grade processors share a common foundation — including PCIe 5 support, DDR5 memory compatibility, and a matching instruction set — yet they take very different approaches to core count, power consumption, and memory capacity. Whether you are evaluating them for workload scalability or energy efficiency, this head-to-head breakdown will help you understand exactly where each chip excels and what trade-offs come with each choice.

Common Features

  • ✓ Both processors support PCIe version 5.
  • ✓ Both processors support 64-bit computing.
  • ✓ Neither processor includes integrated graphics.
  • ✓ Both processors have an L2 cache of 2 MB per core.
  • ✓ Neither processor has an unlocked multiplier.
  • ✓ Both processors use Turbo Boost version 2.
  • ✓ Both processors support ECC memory.
  • ✓ Both processors use DDR5 memory.
  • ✓ Both processors support multithreading.
  • ✓ Both processors share the same instruction sets: MMX, F16C, FMA3, AES, AVX, AVX2, SSE 4.1, and SSE 4.2.
  • ✓ The NX bit security feature is present on both processors.

Main Differences

  • • Thermal Design Power (TDP) is 80W on Intel Xeon 6337P and 150W on Intel Xeon 6511P.
  • • Semiconductor size is 10 nm on Intel Xeon 6337P and 3 nm on Intel Xeon 6511P.
  • • Maximum CPU temperature is 100 °C on Intel Xeon 6337P and 98 °C on Intel Xeon 6511P.
  • • CPU configuration is 6 cores at 3.5 GHz on Intel Xeon 6337P and 16 cores at 2.3 GHz on Intel Xeon 6511P.
  • • CPU threads total 12 on Intel Xeon 6337P and 32 on Intel Xeon 6511P.
  • • Turbo clock speed reaches 5.3 GHz on Intel Xeon 6337P and 4.2 GHz on Intel Xeon 6511P.
  • • L3 cache is 18 MB on Intel Xeon 6337P and 72 MB on Intel Xeon 6511P.
  • • L1 cache is 480 KB on Intel Xeon 6337P and 1792 KB on Intel Xeon 6511P.
  • • L2 cache is 12 MB on Intel Xeon 6337P and 32 MB on Intel Xeon 6511P.
  • • Clock multiplier is 35 on Intel Xeon 6337P and 23 on Intel Xeon 6511P.
  • • L3 cache per core is 3 MB on Intel Xeon 6337P and 4.5 MB on Intel Xeon 6511P.
  • • Maximum RAM speed is 4800 MHz on Intel Xeon 6337P and 6400 MHz on Intel Xeon 6511P.
  • • Maximum memory capacity is 128 GB on Intel Xeon 6337P and 4000 GB on Intel Xeon 6511P.
  • • Memory channels number 2 on Intel Xeon 6337P and 8 on Intel Xeon 6511P.
Specs Comparison
Intel Xeon 6337P

Intel Xeon 6337P

Intel Xeon 6511P

Intel Xeon 6511P

General info:
Thermal Design Power (TDP) 80W 150W
release date February 2025 February 2025
semiconductor size 10 nm 3 nm
PCI Express (PCIe) version 5 5
Supports 64-bit ✓ ✓
CPU temperature 100 °C 98 °C
Has integrated graphics ✕ ✕

The most striking difference in this group is the semiconductor size: the Xeon 6511P is built on a 3 nm process versus the Xeon 6337P's 10 nm node. A smaller process node generally allows for greater transistor density, which can translate to improved power efficiency and performance per watt — a significant architectural advantage for the 6511P on paper.

That efficiency story, however, is complicated by the Thermal Design Power figures. The 6511P carries a 150W TDP compared to the 6337P's much lower 80W. This means the 6511P demands nearly twice the cooling capacity and draws substantially more power, which directly impacts infrastructure costs, cooling requirements, and total cost of ownership in data center deployments. The 6337P is clearly the more power-conservative option.

Both CPUs share PCIe 5.0 support and 64-bit capability, and neither offers integrated graphics, so those specs are a wash. The maximum CPU temperature is virtually identical (100 °C vs. 98 °C), meaning neither chip offers a meaningful thermal headroom advantage. Overall, the 6511P holds an edge in process technology modernity, while the 6337P has a clear advantage in power efficiency and thermal footprint — making the better choice highly dependent on whether raw architectural advancement or operational efficiency is the priority.

Performance:
CPU speed 6 x 3.5 GHz 16 x 2.3 GHz
CPU threads 12 threads 32 threads
turbo clock speed 5.3GHz 4.2GHz
L3 cache 18 MB 72 MB
L1 cache 480 KB 1792 KB
L2 cache 12 MB 32 MB
L2 core 2 MB/core 2 MB/core
clock multiplier 35 23
Has an unlocked multiplier ✕ ✕
L3 core 3 MB/core 4.5 MB/core
Turbo Boost version 2 2

These two CPUs represent fundamentally different performance philosophies. The Xeon 6337P is a 6-core, 12-thread chip tuned for single-threaded responsiveness, with a base clock of 3.5 GHz and an impressive turbo ceiling of 5.3 GHz. The Xeon 6511P, by contrast, is a 16-core, 32-thread processor that prioritizes parallelism, running a more modest 2.3 GHz base with a 4.2 GHz turbo peak. In practice, the 6337P will feel snappier on workloads that rely on a single fast core — such as certain legacy enterprise applications or latency-sensitive tasks — while the 6511P is built to handle heavily threaded workloads like virtualization, data processing, or compiled builds without breaking a sweat.

Cache hierarchy strongly favors the 6511P at every level. Its 72 MB L3 cache dwarfs the 6337P's 18 MB, and its L1 and L2 caches are proportionally larger as well. More cache means the processor can hold larger working data sets close to the cores, reducing costly trips to main memory — a tangible benefit for database workloads, in-memory analytics, and any application with large, frequently accessed data structures. The per-core L2 allocation is identical at 2 MB/core, but the 6511P's 4.5 MB/core L3 versus the 6337P's 3 MB/core gives it a further per-core cache edge.

For single-threaded peak speed, the 6337P wins outright with its superior turbo frequency. But across virtually every server-class, multi-threaded workload, the 6511P's combination of more cores, more threads, and a vastly larger cache gives it a commanding performance advantage. Unless the use case is explicitly optimized for raw single-core clock speed, the 6511P holds the stronger hand in this group.

Memory:
Supports ECC memory ✓ ✓
DDR memory version 5 5
RAM speed (max) 4800 MHz 6400 MHz
maximum memory amount 128GB 4000GB
memory channels 2 8

Both processors support DDR5 memory and ECC (Error-Correcting Code), so neither has an advantage on memory generation or reliability fundamentals — ECC is a non-negotiable requirement in server environments, and both chips meet that bar equally.

Where the gap becomes dramatic is in bandwidth and capacity. The 6511P supports 8 memory channels running at up to 6400 MHz, versus the 6337P's 2 channels at 4800 MHz. More channels mean more data can flow between the CPU and RAM simultaneously — this directly impacts throughput-sensitive workloads like in-memory databases, large matrix operations, and high-frequency data streaming. The 6511P's memory bandwidth potential is in a completely different league. Equally striking is the maximum memory ceiling: the 6511P supports up to 4000 GB of RAM, while the 6337P tops out at 128 GB — a roughly 31x difference that makes the 6337P unsuitable for workloads requiring massive in-memory data sets.

The 6511P wins this group decisively and it is not particularly close. Its combination of higher RAM speed, far greater channel count, and an enormous memory capacity ceiling makes it the only viable option between the two for memory-intensive enterprise workloads. The 6337P's memory subsystem is adequate for light server tasks, but its constraints would quickly become a bottleneck in any demanding deployment.

Features:
uses multithreading ✓ ✓
instruction sets MMX, F16C, FMA3, AES, AVX, AVX2, SSE 4.1, SSE 4.2 MMX, F16C, FMA3, AES, AVX, AVX2, SSE 4.1, SSE 4.2
Has NX bit ✓ ✓

Across every specification in this group, the Intel Xeon 6337P and 6511P are identical. Both support multithreading, carry the NX bit for hardware-enforced memory protection against malicious code execution, and expose precisely the same instruction set extensions — including AVX2 for wide vectorized math, AES for hardware-accelerated encryption, and FMA3 for fused multiply-add operations commonly leveraged in scientific and AI workloads.

This parity means that software compiled to take advantage of any of these instruction sets will run on either chip without modification. There is no compatibility gap to navigate, and no scenario within this data where one processor unlocks a capability the other cannot match.

This group is a clear and complete tie. Neither chip holds any feature-level advantage over the other based on the provided specs, and this dimension should carry no weight in a purchasing decision between the two.

Comparison Summary & Verdict

After reviewing all available specifications, it is clear that these two processors are built with distinct workloads in mind. The Intel Xeon 6337P stands out for its lower 80W TDP and higher turbo clock speed of 5.3 GHz, making it a compelling choice for tasks that benefit from single-threaded performance and power-efficient deployments. The Intel Xeon 6511P, on the other hand, dominates in scalability: its 16 cores and 32 threads, massive 4000 GB maximum memory capacity, 8 memory channels, and larger cache hierarchy make it far better suited for memory-intensive and heavily parallelized enterprise workloads. Both chips support ECC memory, DDR5, and the same instruction sets, so the decision ultimately comes down to whether your priority is clock speed and efficiency or raw throughput and memory bandwidth.

Intel Xeon 6337P
Buy Intel Xeon 6337P if...

Choose the Intel Xeon 6337P if you need a power-efficient processor with a lower 80W TDP and higher turbo clock speeds of up to 5.3 GHz for single-threaded or lightly threaded workloads.

Intel Xeon 6511P
Buy Intel Xeon 6511P if...

Choose the Intel Xeon 6511P if your workloads demand more cores, greater memory capacity up to 4000 GB, and higher memory bandwidth through 8 memory channels for large-scale enterprise or in-memory computing applications.