Intel Core i9-10900 vs Intel Xeon W-2145 Comparison

The Intel Core i9-10900 and the Intel Xeon W-2145 are both end-of-life Intel processors, but they target fundamentally different segments of the market. The i9-10900 is a 10th Gen Comet Lake desktop part, while the Xeon W-2145 is a Skylake-W workstation/server chip. Benchmark data shows a close overall competition, with the i9-10900 taking seven of eight head-to-head tests, yet the Xeon W-2145 counters with a significant win in Geekbench multi-core and offers platform features the desktop chip lacks. This analysis breaks down the raw scores, architectural differences, and practical implications of each processor's design.

FAQ

Q: Which processor has a higher average benchmark score?

A: The Intel Core i9-10900 has an average benchmark score of 4614, while the Intel Xeon W-2145 scores 4576. The i9-10900 leads by 0.8% in this metric, placing it just ahead of the Xeon in the nearestRivals list.

Q: How large is the performance gap in single-threaded workloads?

A: The i9-10900 wins decisively in single-threaded tests. In Geekbench single-core, it scores 1651 against the Xeon's 1345, a 22.8% advantage. Cinebench R23 single-core shows a smaller 6% lead (2289 vs 2159).

Q: Does the Xeon W-2145 win any benchmark against the i9-10900?

A: Yes, it wins one test. The Xeon W-2145 scores 8712 in Geekbench multi-core, compared to the i9-10900's 8585, giving the Xeon a 1.5% advantage in that specific workload.

Q: What are the core and thread counts for each processor?

A: The Intel Core i9-10900 has 10 cores and 20 threads. The Intel Xeon W-2145 has 8 cores and 16 threads. The i9-10900 offers two more cores and four more threads.

Q: Which processor supports ECC memory?

A: The Intel Xeon W-2145 supports ECC memory, as indicated by the "eccMemory": true field. The Intel Core i9-10900 does not support ECC memory.

Q: What is the difference in memory bandwidth between the two?

A: The Xeon W-2145 provides 85.3 GB/s of memory bandwidth due to its quad-channel memory bus. The i9-10900 offers 46.9 GB/s through a dual-channel bus, meaning the Xeon has roughly 82% more bandwidth.

Architecture Differences

The two processors diverge significantly in their underlying architecture despite both being built on Intel's 14 nm process node. The i9-10900 uses the Comet Lake architecture, while the Xeon W-2145 is based on Skylake-W. This fundamental difference in design generation explains many of the performance characteristics observed in benchmarks.

Core configuration is a primary differentiator. The i9-10900 packs 10 cores and 20 threads, whereas the Xeon W-2145 has 8 cores and 16 threads. This gives the desktop part a 25% advantage in core count, which directly contributes to its wins in multi-threaded Cinebench tests. The cache layouts also differ substantially. The i9-10900 has 64 KB of L1 and 256 KB of L2 per core, with a shared 20 MB L3 cache. The Xeon W-2145 matches the L1 cache at 64 KB per core but doubles the L2 to 1 MB per core, while its L3 cache is only 11 MB shared. The larger per-core L2 on the Xeon may help in certain latency-sensitive workloads but does not compensate for the smaller L3 in aggregate.

Platform support is where the Xeon W-2145 clearly pulls ahead. It uses the Intel Socket 2066 and offers 48 PCIe Gen 3 lanes (CPU only), compared to the i9-10900's Socket 1200 with 16 PCIe Gen 3 lanes. Memory architecture also differs: the Xeon supports quad-channel DDR4 with 85.3 GB/s bandwidth, while the i9-10900 is limited to dual-channel with 46.9 GB/s. The Xeon also includes ECC memory support, a critical feature for workstation reliability that the i9 lacks. The Xeon's die size is listed as 484 mm², whereas no die size is provided for the i9-10900.

The i9-10900 includes integrated graphics (UHD Graphics 630), while the Xeon W-2145 has no integrated graphics. The i9 also has a higher boost clock of 5.20 GHz versus 4.50 GHz on the Xeon, and a lower base clock of 2.80 GHz versus 3.70 GHz. The Xeon's higher base clock and larger die suggest a design focused on sustained throughput, whereas the i9's high boost clock targets bursty, single-threaded performance.

Head-to-Head Benchmarks

The benchmark data reveals a clear pattern: the i9-10900 dominates in most tests, but the Xeon W-2145 holds its own in one specific area. Across eight head-to-head comparisons, the i9-10900 wins seven, with the Xeon taking a single victory.

In Cinebench tests, the i9-10900 shows a consistent 6% advantage in both single-core and multi-core workloads. For Cinebench R15, the i9 scores 1634 multi-core and 230 single-core, while the Xeon scores 1542 and 217 respectively. Cinebench R20 follows the same trend: the i9 reaches 6811 multi-core and 961 single-core, versus the Xeon's 6425 and 906. Cinebench R23 continues the pattern, with the i9 at 16219 multi-core and 2289 single-core, compared to the Xeon's 15299 and 2159. In each case, the deltaPct is exactly 6% for multi-core and 6% to 6.1% for single-core, indicating a uniform performance uplift across Cinebench's rendering workloads.

The Geekbench results tell a more nuanced story. In Geekbench single-core, the i9-10900 wins decisively with a score of 1651 against the Xeon's 1345, a 22.8% margin. This is the largest performance gap in any test, reflecting the i9's superior clock speed and newer architecture for latency-sensitive tasks. However, in Geekbench multi-core, the Xeon W-2145 turns the tables, scoring 8712 versus the i9's 8585, a 1.5% advantage for the Xeon. This is the only test where the Xeon wins, despite having two fewer cores and four fewer threads.

The average benchmark scores confirm the overall closeness: the i9-10900 averages 4614 points, while the Xeon W-2145 averages 4576, a mere 0.8% difference. Both processors rank in the 58th percentile among all CPUs, placing them at comparable overall performance levels despite their different strengths.

The Verdict

The data points to a clear pick for users prioritizing raw single-threaded performance and core count: the Intel Core i9-10900. It wins seven of eight head-to-head benchmarks, including all Cinebench tests, and offers a commanding 22.8% lead in Geekbench single-core. Its 10 cores and 20 threads provide more parallel compute capability than the Xeon's 8 cores and 16 threads, which translates to consistent multi-core wins in rendering workloads.

However, the Intel Xeon W-2145 is the only choice for specific workstation requirements. Its quad-channel memory bus delivers 85.3 GB/s of bandwidth, nearly double the i9's 46.9 GB/s, and it supports ECC memory for data integrity. The Xeon also offers 48 PCIe Gen 3 lanes versus 16 on the i9, making it far more suitable for expansion-heavy server or workstation builds. In Geekbench multi-core, the Xeon edges out the i9 by 1.5%, suggesting its architecture handles certain mixed workloads more efficiently despite fewer cores.

The launch MSRP for the i9-10900 is $483. The Xeon W-2145's launch MSRP is $1113. The i9-10900 provides better benchmark performance for most tasks at a lower launch price, but the Xeon's platform features justify its position for professional environments requiring ECC, high memory bandwidth, or extensive PCIe connectivity. Neither processor has an unlocked multiplier, so overclocking is not a differentiator.

Specification Differences

| Specification | Intel Core i9-10900 | Intel Xeon W-2145 |

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

| Cores | 10 | 8 |

| Threads | 20 | 16 |

| Base Clock | 2.80 GHz | 3.70 GHz |

| Boost Clock | 5.20 GHz | 4.50 GHz |

| TDP | 65 W | 140 W |

| Socket | Intel Socket 1200 | Intel Socket 2066 |

| Architecture | Comet Lake | Skylake |

| Codename | Comet Lake | Skylake-W |

| Generation | Core i9 (Comet Lake) | Xeon W (Skylake-W) |

| Process Node | 14 nm | 14 nm |

| Die Size | N/A | 484 mm² |

| L2 Cache | 256 KB (per core) | 1 MB (per core) |

| L3 Cache | 20 MB (shared) | 11 MB (shared) |

| Memory Bus | Dual-channel | Quad-channel |

| Memory Bandwidth | 46.9 GB/s | 85.3 GB/s |

| ECC Memory | No | Yes |

| PCIe Lanes | 16 (CPU only) | 48 (CPU only) |

| Integrated Graphics | UHD Graphics 630 | None |

| Market Segment | Desktop | Server/Workstation |

| Launch MSRP | $483 | $1113 |

Where Each One Wins

The Intel Core i9-10900 is the winner for general desktop productivity, gaming, and software development that relies on high single-thread performance. Its 22.8% advantage in Geekbench single-core makes it superior for applications that are not heavily parallelized, such as legacy code, scripting, or UI-intensive workloads. The 6% lead across all Cinebench tests also makes it the better choice for 3D rendering tasks in software like Cinema 4D, where both multi-core and single-core performance matter. Its lower 65 W TDP and integrated graphics provide additional flexibility for compact builds, though the lack of ECC support limits its use in mission-critical data processing.

The Intel Xeon W-2145 wins in scenarios where platform capabilities outweigh raw benchmark scores. Its quad-channel memory architecture and 85.3 GB/s bandwidth make it ideal for memory-bound workloads like large database operations, scientific computing, or virtualized environments. ECC memory support ensures data integrity, a requirement for financial modeling or research computations where a bit-flip could corrupt results. The 48 PCIe Gen 3 lanes allow for multiple GPUs, NVMe drives, or high-speed network cards simultaneously, making the Xeon the appropriate choice for a server or high-end workstation. Its 1.5% win in Geekbench multi-core suggests it handles certain mixed integer/float workloads more efficiently, potentially due to the larger per-core L2 cache. The higher 140 W TDP and larger die size (484 mm²) indicate a design built for sustained, heavy-duty operation rather than burst performance.