Intel Core i9-14900 vs Intel Xeon Gold 6338T Comparison

Where Each One Wins

The benchmark split is not subtle. The Intel Core i9-14900 takes 12 of the 17 head-to-head tests, while the Intel Xeon Gold 6338T manages 5 wins. That alone tells you these are not competing for the same workload. The i9-14900 dominates heavily in raw throughput tasks that scale with frequency and modern core design, while the Xeon holds its ground in specific server-oriented instruction patterns and older single-thread rendering tests.

The i9-14900 wins decisively in Cinebench R15 multicore by 36% (4793 vs 3067), in Cinebench R20 multicore by 19.7% (15910 vs 12780), and in PassMark multithread by 19.7% (44578 vs 35801). These are large margins, not edge cases. The i9 also crushes the Xeon in PassMark physics by 53.3% (2486 vs 1160) and in PassMark single-thread by 45.7% (4323 vs 2348). If your workload is animation rendering, physics simulation, or any modern multithreaded application, the i9-14900 is the clear choice from this data.

The Xeon Gold 6338T wins where the workload favors its architecture. It beats the i9 by 94.2% in Cinebench R23 singlecore (4296 vs 2212), which is a massive outlier. It also wins in PassMark extended instructions by 41.4% (43292 vs 30624), PassMark data compression by 1.4% (557816 vs 550271), and PassMark random string sorting by 8.9% (66495 vs 61060). The R23 singlecore result is suspicious in context, but the data is the data. The Xeon also wins Cinebench R15 singlecore by 37.1% (432 vs 315).

The pattern suggests the Xeon is tuned for specific instruction sets and memory-heavy operations, while the i9 wins on general-purpose speed. For a workstation doing video encoding, 3D rendering, or heavy code compilation, the i9-14900 is the practical pick. For database work, cryptography, or unusual data manipulation patterns, the Xeon's specialized wins matter.

Architecture Differences

These are fundamentally different platforms. The Xeon Gold 6338T is Ice Lake-SP, built on Intel's 10 nm process for Socket 4189. It is a server/workstation part with 24 cores and 48 threads, meaning hyperthreading is enabled across all cores. Its base clock is 2.10 GHz with a boost of 3.40 GHz. The i9-14900 is Raptor Lake-R, also on 10 nm but for Socket 1700. It has 24 cores and 32 threads, which means 8 of those cores are efficiency cores without hyperthreading. Base clock is 2.00 GHz, but boost reaches 5.80 GHz.

Cache layouts differ significantly. The Xeon uses 64 KB L1 per core, 1 MB L2 per core, and 36 MB shared L3. The i9 uses 80 KB L1 per core, 2 MB L2 per core, and also 36 MB shared L3. The larger per-core L2 on the i9 helps with latency-sensitive workloads. The die size is listed only for the i9 at 257 mm²; the Xeon has no recorded die size.

Memory architecture is where the platforms truly diverge. The Xeon supports DDR4 only, but with an eight-channel memory bus and 204.8 GB/s bandwidth. The i9 supports both DDR4 and DDR5, but only dual-channel, and no memory bandwidth figure is recorded. The Xeon's eight-channel bandwidth is a server-grade advantage for memory-bound tasks. Both support ECC memory, which is notable for the desktop i9.

PCIe also differs. The Xeon offers Gen 4 with 64 lanes (CPU only). The i9 offers Gen 5 with 16 lanes (CPU only). The Xeon has far more PCIe lanes for expansion, while the i9 has faster generation but fewer lanes. The i9 includes integrated UHD Graphics 770; the Xeon has no integrated graphics recorded. The i9 has a launch MSRP of $549, while the Xeon has no recorded launch price.

The Xeon released on 2021-04-05, while the i9 launched on 2024-01-07. Both are active in production. The i9 has a part number SRN3V. Neither has an unlocked multiplier.

The Verdict

The database shows two different markets. The Intel Core i9-14900 is for desktop performance where single-thread speed and high-frequency multicore matter. Its 12 wins include the biggest margins in physics, single-thread, and multithread tests. The 5.80 GHz boost clock and 32 threads with efficiency cores make it a general-purpose powerhouse. If your tasks are rendering, simulation, or heavy office productivity, the i9 is the answer.

The Intel Xeon Gold 6338T is for server and workstation deployments where memory bandwidth, PCIe lanes, and specialized instruction throughput matter more than raw clock speed. Its eight-channel DDR4 memory at 204.8 GB/s and 64 Gen 4 lanes support large memory pools and many peripherals. The wins in extended instructions, data compression, and random string sorting suggest workloads like compression pipelines, database sorting, or cryptographic processing. The 48 threads and 36 MB shared L3 also help with heavily threaded server tasks.

The overall average benchmark scores favor the i9 slightly: the Xeon averages 60572 with a 92nd percentile, while the i9 averages 58115 also at the 92nd percentile. The Xeon's nearest rival is the i9-13900 at a 0.2% difference, meaning the Xeon is essentially tied with a previous-gen desktop flagship. The i9's nearest rival is a Xeon Platinum 8260M at 0.4% difference, which shows the i9 competes with server parts in average terms.

Pick the i9-14900 for a desktop build where you want maximum speed per core and strong all-around multithreading. Pick the Xeon Gold 6338T for a server platform where memory bandwidth, ECC reliability, and expansion capacity are non-negotiable.

FAQ

Q: Which processor is faster in single-thread performance?

A: The Intel Core i9-14900 wins PassMark single-thread by 45.7% (4323 vs 2348). However, the Xeon Gold 6338T wins Cinebench R23 singlecore by 94.2% (4296 vs 2212), so results depend on the benchmark.

Q: Does the Xeon support more memory channels?

A: Yes. The Xeon Gold 6338T uses an eight-channel DDR4 memory bus with 204.8 GB/s bandwidth. The i9-14900 uses dual-channel memory supporting DDR4 and DDR5, with no recorded bandwidth figure.

Q: Which processor has more threads?

A: The Xeon Gold 6338T has 48 threads across 24 cores. The i9-14900 has 32 threads across 24 cores because 8 of its cores are efficiency cores without hyperthreading.

Q: Do both processors support ECC memory?

A: Yes, both the Xeon Gold 6338T and the i9-14900 list ECC memory support as true.

Q: Which processor has more PCIe lanes?

A: The Xeon Gold 6338T has 64 lanes of PCIe Gen 4. The i9-14900 has 16 lanes of PCIe Gen 5. The Xeon offers far more expansion capacity.

Q: Which processor wins more benchmark tests overall?

A: The i9-14900 wins 12 of 17 head-to-head tests. The Xeon Gold 6338T wins 5 tests.

Head-to-Head Benchmarks

The largest single win belongs to the Xeon in Cinebench R23 singlecore. The Xeon scores 4296 against the i9's 2212, a 94.2% advantage. This is the kind of margin that flips buying decisions. But it stands alone as an anomaly. The i9 wins Cinebench R15 singlecore by 37.1% (432 vs 315), which contradicts the R23 result, suggesting different workload sensitivities between the two tests.

The i9's biggest wins are in PassMark physics, where it leads by 53.3% (2486 vs 1160), and PassMark single-thread, where it leads by 45.7% (4323 vs 2348). The physics gap is enormous and indicates a major advantage in simulation workloads. The single-thread gap matters for everyday responsiveness and lightly threaded applications.

In multicore Cinebench, the i9 leads R15 by 36% (4793 vs 3067) and R20 by 19.7% (15910 vs 12780). The R23 multicore gap narrows to just 2.1% (31070 vs 30430), which is nearly a tie. This means the Xeon scales better as the render test becomes more demanding, but the i9 still wins.

The Xeon's other wins include PassMark extended instructions by 41.4% (43292 vs 30624), PassMark random string sorting by 8.9% (66495 vs 61060), and PassMark data compression by 1.4% (557816 vs 550271). These are specialized workloads, but the margins are real. The i9 wins PassMark data encryption by 26.4% (33540 vs 24677), PassMark floating point math by 24.7% (120262 vs 90584), PassMark integer math by 13% (175010 vs 152275), PassMark find prime numbers by 37.2% (188 vs 118), and PassMark multithread by 19.7% (44578 vs 35801).

The data shows the i9 is the more balanced, faster processor across most tasks. The Xeon wins where its architecture specializes, but those wins are fewer and often narrower.

Specification Differences

| Specification | Intel Xeon Gold 6338T | Intel Core i9-14900 |

|---|---|---|

| Cores | 24 | 24 |

| Threads | 48 | 32 |

| Base Clock | 2.10 GHz | 2.00 GHz |

| Boost Clock | 3.40 GHz | 5.80 GHz |

| TDP | 165 W | 65 W |

| Socket | Intel Socket 4189 | Intel Socket 1700 |

| Architecture | Ice Lake | Raptor Lake |

| Codename | Ice Lake-SP | Raptor Lake-R |

| Process Node | 10 nm | 10 nm |

| Die Size | Not recorded | 257 mm² |

| L1 Cache | 64 KB (per core) | 80 KB (per core) |

| L2 Cache | 1 MB (per core) | 2 MB (per core) |

| L3 Cache | 36 MB (shared) | 36 MB (shared) |

| Memory Support | DDR4 | DDR4, DDR5 |

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

| Memory Bandwidth | 204.8 GB/s | Not recorded |

| ECC Memory | Yes | Yes |

| PCIe | Gen 4, 64 Lanes (CPU only) | Gen 5, 16 Lanes (CPU only) |

| Integrated Graphics | None recorded | UHD Graphics 770 |

| Market Segment | Server/Workstation | Desktop |

| Release Date | 2021-04-05 | 2024-01-07 |

| Launch MSRP | Not recorded | $549 |

| Multiplier Unlocked | No | No |

| Part Number | Not recorded | SRN3V |

The specification table makes the split clear. The Xeon trades clock speed and modern features for server capacity: eight-channel memory, 64 PCIe lanes, and 48 threads. The i9 trades those for a 5.80 GHz boost, integrated graphics, and a 65 W TDP. Both sit at the 92nd percentile of all CPUs, but they achieve that rank through entirely different means.