Intel Core i9-13900KF vs Intel Xeon Gold 6338T Comparison

The Intel Core i9-13900KF is the clear performance victor over the Intel Xeon Gold 6338T, winning all 17 head-to-head benchmark comparisons. The data shows a consistent and often massive performance gap, with the Core i9-13900KF leading by anywhere from 6.4% to 154.8% depending on the workload. The Xeon Gold 6338T, while not without merit in specific server-oriented scenarios, is outclassed in every benchmark category recorded here.

Head-to-Head Benchmarks

The most dramatic difference appears in the PassMark Physics test, where the Core i9-13900KF scores 2956 against the Xeon Gold 6338T’s 1160, a staggering 154.8% advantage. This is not a subtle difference; it indicates a massive gap in real-time simulation and physics calculation throughput. The PassMark Single Thread test shows a similarly large gap, with the i9-13900KF scoring 4584 versus 2348 for the Xeon, a 95.2% lead that highlights the Core processor’s superior per-core speed.

Across the Cinebench suite, the pattern is consistent. In Cinebench R23 Multi-Core, the i9-13900KF scores 48855, which is 60.5% ahead of the Xeon Gold 6338T’s 30430. The single-core variant of the same test shows a nearly identical 60.5% lead, with scores of 6897 and 4296 respectively. This uniformity across both single and multi-threaded tests suggests the performance advantage is fundamental to the core architecture, not just a matter of thread count. The Cinebench R20 and R15 results mirror this, with the i9-13900KF leading by 60.6% and 60.5% in multi-core, and 60.5% and 60.9% in single-core.

The PassMark Multi-Thread benchmark reinforces the trend, with the i9-13900KF scoring 57729 against 35801, a 61.2% lead. More specialized workloads show similar outcomes. Data Encryption sees the i9-13900KF at 46186, a full 87.2% ahead of the Xeon’s 24677. Even the Extended Instructions test, which often favors server-class chips, shows the i9-13900KF ahead at 46084 versus 43292, a 6.4% edge that, while smaller, still favors the desktop part. The only area where the gap narrows is in Random String Sorting, where the i9-13900KF’s 86510 is 30.1% ahead of the Xeon’s 66495, and Integer Math, with a 35.8% lead (206859 vs 152275). In every single measured category, the Intel Core i9-13900KF delivers higher scores.

FAQ

Q: Which processor has a higher single-threaded performance?

A: The Intel Core i9-13900KF is decisively faster in single-threaded work. In the PassMark Single Thread test, it scores 4584 compared to the Xeon Gold 6338T’s 2348, a 95.2% difference. This is echoed in Cinebench R23 Single-Core, where the i9-13900KF scores 6897 versus 4296.

Q: Is the Xeon Gold 6338T better at anything?

A: Based on the benchmark data provided, no. The Xeon Gold 6338T did not win a single one of the 17 head-to-head comparisons. The Intel Core i9-13900KF won every test, including those typically associated with server workloads like data compression and encryption.

Q: How does the core count compare between the two CPUs?

A: Both processors have 24 cores. However, the Intel Core i9-13900KF has 32 threads, while the Intel Xeon Gold 6338T has 48 threads. Despite having fewer threads, the i9-13900KF still achieves higher multi-threaded scores, such as a 60.5% lead in Cinebench R23 Multi-Core.

Q: What is the performance difference in the most demanding multi-threaded test?

A: In the Cinebench R23 Multi-Core test, the Intel Core i9-13900KF scores 48855, which is 60.5% higher than the Xeon Gold 6338T’s 30430. The PassMark Multi-Thread test shows a similar 61.2% gap, with scores of 57729 and 35801.

Q: Are both processors based on the same architecture?

A: No. The Intel Core i9-13900KF is based on Raptor Lake architecture, while the Intel Xeon Gold 6338T is based on Ice Lake architecture. Both use a 10 nm process node, but the architectures are distinct generations.

Q: Which CPU has a higher boost clock speed?

A: The Intel Core i9-13900KF has a boost clock of 5.80 GHz. The Intel Xeon Gold 6338T has a significantly lower boost clock of 3.40 GHz.

Where Each One Wins

The performance data is unambiguous: the Intel Core i9-13900KF wins in every workload category measured. This makes it the superior choice for any task that relies on raw computational throughput, from single-threaded applications to heavily parallelized multi-threaded workloads. The 154.8% lead in Physics and 95.2% lead in Single Thread performance make it ideal for high-frequency trading, scientific simulation, or any application where per-core speed is critical. Its dominance in PassMark Data Encryption (87.2% faster) also suggests it would handle security-related processing more effectively.

The Intel Xeon Gold 6338T, despite losing all benchmarks, still holds relevance in its intended server context. Its 48 threads and eight-channel memory bus with 204.8 GB/s of bandwidth are features not present on the Core i9-13900KF. For a server environment with massive memory bandwidth requirements, the Xeon’s platform-level capabilities could be more important than raw CPU core performance. Its 64 PCIe Gen 4 lanes also offer significantly more expansion capacity than the Core i9-13900KF’s 20 Gen 5 lanes. For workloads that are constrained by memory bandwidth rather than compute, the Xeon Gold 6338T’s platform advantages could be the deciding factor.

Specification Differences

| Specification | Intel Core i9-13900KF | Intel Xeon Gold 6338T |

| :--- | :--- | :--- |

| Base Clock | 3.00 GHz | 2.10 GHz |

| Boost Clock | 5.80 GHz | 3.40 GHz |

| TDP | 125 W | 165 W |

| Socket | Intel Socket 1700 | Intel Socket 4189 |

| Memory Support | DDR4, DDR5 | DDR4 |

| Memory Bus | Dual-channel | Eight-channel |

| PCIe | Gen 5, 20 Lanes (CPU only) | Gen 4, 64 Lanes (CPU only) |

| Market Segment | Desktop | Server/Workstation |

| Unlocked Multiplier | Yes | No |

Architecture Differences

The two processors come from different architectural lineages. The Intel Core i9-13900KF is built on Raptor Lake, while the Xeon Gold 6338T uses Ice Lake. Both are fabricated on a 10 nm process by Intel, but the core designs differ. The i9-13900KF has 24 cores and 32 threads, while the Xeon has the same 24 cores but 48 threads. This difference stems from the Xeon’s support for Hyper-Threading on all cores, whereas the i9-13900KF’s hybrid architecture uses performance and efficiency cores, resulting in fewer total threads.

Cache configurations also differ. The i9-13900KF has 80 KB of L1 and 2 MB of L2 cache per core, while the Xeon Gold 6338T has 64 KB of L1 and 1 MB of L2 per core. Both share a 36 MB L3 cache. The memory controller is a major divergence: the Xeon supports eight-channel DDR4 memory with a bandwidth of 204.8 GB/s, while the i9-13900KF supports dual-channel DDR4 and DDR5. This makes the Xeon a memory-bandwidth specialist, while the i9-13900KF offers more flexibility with memory types. The i9-13900KF also has an unlocked multiplier for overclocking, a feature absent on the locked Xeon.

The Verdict

For almost any user, the Intel Core i9-13900KF is the obvious choice. The data shows it is faster in every benchmark, from single-threaded tasks to fully parallel multi-threaded loads. Its 60.5% lead in Cinebench R23 Multi-Core and 95.2% lead in PassMark Single Thread demonstrate a decisive performance advantage. Users who need maximum compute performance for desktop applications, content creation, or even light server duties should select the i9-13900KF.

The Intel Xeon Gold 6338T is only viable in a narrow, specific use case. Its 48 threads and eight-channel memory architecture with 204.8 GB/s of bandwidth are its key strengths, but these do not translate into benchmark wins. The Xeon’s 64 PCIe Gen 4 lanes also provide a platform expansion advantage. For a system that needs extreme memory bandwidth and massive I/O connectivity, where raw CPU benchmark scores are secondary to platform throughput, the Xeon Gold 6338T remains a relevant option. For all other purposes, the benchmark results are clear: the Intel Core i9-13900KF is the superior processor.