Intel Core i9-10900X vs Intel Xeon E5-2699A v4 Comparison

FAQ

Q: Which processor wins more benchmark comparisons between the Intel Core i9-10900X and the Intel Xeon E5-2699A v4?

A: The Intel Core i9-10900X wins seven of the eight head-to-head benchmarks, while the Intel Xeon E5-2699A v4 wins only one, the Geekbench multicore test with a score of 10118 versus 10104.

Q: How does single-core performance compare between these two CPUs?

A: The i9-10900X is decisively ahead in single-core tests. In Geekbench single-core, it scores 1438 against 1020, a 41% advantage. In Cinebench R23 single-core, the i9-10900X scores 2676 against 2516, a 6.4% lead.

Q: What is the difference in core and thread counts?

A: The Xeon E5-2699A v4 has 22 cores and 44 threads, while the Core i9-10900X has 10 cores and 20 threads. The Xeon has more than double the core and thread count.

Q: Do the two processors support ECC memory?

A: No. The Intel Core i9-10900X does not support ECC memory, while the Intel Xeon E5-2699A v4 does support ECC memory.

Q: What are the base and boost clock speeds for each processor?

A: The Core i9-10900X has a base clock of 3.70 GHz and a boost clock of 4.70 GHz. The Xeon E5-2699A v4 has a base clock of 2.40 GHz and a boost clock of 3.60 GHz.

Q: What is the production status of each processor?

A: The Core i9-10900X is listed as Active in production, while the Xeon E5-2699A v4 is listed as End-of-life.

Where Each One Wins

The benchmark data splits clearly along two axes: raw multi-threaded throughput and single-core responsiveness. The Core i9-10900X dominates the Cinebench suite across every version tested, both multi-core and single-core. Its wins in Cinebench R15, R20, and R23 are consistent, with each multi-core score exceeding the Xeon by 6.3%. The single-core Cinebench results also favor the i9-10900X, with deltas of 6.3% in R15 and R20, and 6.4% in R23.

The Xeon E5-2699A v4 claims only one victory, but it is a meaningful one: Geekbench multicore. The Xeon scores 10118, marginally ahead of the i9-10900X's 10104, a delta of -0.1%. This suggests that in certain mixed-thread workloads that mimic Geekbench's test patterns, the Xeon's 22 cores can edge out the i9's 10 cores. However, the margin is negligible, effectively a statistical tie.

The i9-10900X also wins decisively in Geekbench single-core with a 41% lead, the largest delta in any benchmark between the two. This makes the use-case split obvious: the i9-10900X is the choice for latency-sensitive and lightly-threaded applications, while the Xeon only shows a theoretical advantage in highly parallel, Geekbench-style workloads, and even there the advantage is under a tenth of a percent. The overall average benchmark scores reinforce this: the i9-10900X averages 5555, placing it at the 61st percentile, while the Xeon averages 5259, at the 60th percentile.

Architecture Differences

The two processors come from different architectural generations and are built for different sockets. The Core i9-10900X uses the Cascade Lake architecture, specifically Cascade Lake-X, and fits into Intel Socket 2066. The Xeon E5-2699A v4 uses the older Broadwell architecture, specifically Broadwell-EP, and requires Intel Socket 2011-3.

Both are manufactured on Intel's 14 nm process node, but the similarities end there. The Xeon's die is substantially larger at 456 mm² and packs 7,200 million transistors. The Core i9-10900X has no listed transistor or die size data, but its cache hierarchy reveals the architectural differences. The i9-10900X has 1 MB of L2 cache per core, while the Xeon has only 256 KB per core. The Xeon compensates with a much larger shared L3 cache: 55 MB versus 19.25 MB on the i9. L1 cache is identical at 64 KB per core.

The Xeon is a server-derived part with ECC memory support and a locked multiplier, while the i9-10900X has no ECC support and an unlocked multiplier for overclocking. The Xeon also lists a memory bandwidth figure of 76.8 GB/s, while the i9 does not have a listed memory bandwidth. Both support DDR4 memory over a quad-channel bus, and both use PCIe Gen 3, with the Xeon specifying 40 lanes (CPU only).

The production statuses also differ: the i9-10900X is Active, while the Xeon is End-of-life. Release dates are far apart, with the Xeon launching on 2016-10-24 and the i9 launching on 2019-10-18. The Xeon has a launch MSRP of $4938, a figure the database records but which is not part of the performance comparison.

Specification Differences

| Specification | Intel Core i9-10900X | Intel Xeon E5-2699A v4 |

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

| Cores | 10 | 22 |

| Threads | 20 | 44 |

| Base Clock | 3.70 GHz | 2.40 GHz |

| Boost Clock | 4.70 GHz | 3.60 GHz |

| TDP | 165 W | 145 W |

| Socket | Intel Socket 2066 | Intel Socket 2011-3 |

| Architecture | Cascade Lake | Broadwell |

| Codename | Cascade Lake-X | Broadwell-EP |

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

| L3 Cache | 19.25 MB (shared) | 55 MB (shared) |

| ECC Memory | No | Yes |

| Memory Bandwidth | Not listed | 76.8 GB/s |

| Transistors | Not listed | 7,200 million |

| Die Size | Not listed | 456 mm² |

| Multiplier Unlocked | Yes | No |

| Production Status | Active | End-of-life |

| Launch MSRP | Not listed | $4938 |

The Xeon offers more cores, threads, L3 cache, and ECC support, plus a lower TDP of 145 W versus 165 W. The i9-10900X counters with much higher clock speeds, a larger per-core L2 cache, an unlocked multiplier, and a newer architecture. The i9 also has a smaller process node generation advantage in terms of release timing, though both use 14 nm.

Head-to-Head Benchmarks

The Cinebench results are uniform and favor the i9-10900X across the board. In Cinebench R15 multi-core, the i9 scores 1910 against the Xeon's 1796, a 6.3% lead. The single-core R15 test shows the same 6.3% delta, with 269 versus 253. Moving to Cinebench R20, the pattern holds: multi-core scores are 7961 versus 7486, and single-core scores are 1123 versus 1056, both again with a 6.3% delta. Cinebench R23 continues the trend with a multi-core score of 18957 versus 17826, a 6.3% delta, and a single-core score of 2676 versus 2516, a 6.4% delta. The consistency of these deltas suggests a fundamental per-core performance advantage for the i9-10900X that scales across all Cinebench versions.

The Geekbench results tell a different story. In Geekbench multicore, the Xeon finally takes a win with 10118 against 10104, but the delta is only -0.1%, meaning the two are effectively equivalent in this workload. The i9's 10-core, 20-thread configuration is able to match the Xeon's 22-core, 44-thread configuration in this test, which is a strong statement about the i9's architectural efficiency per core. In Geekbench single-core, the i9 wins by a massive 41% margin, scoring 1438 against 1020. This is the largest performance gap in the entire comparison and highlights the i9's superior clock speeds and newer architecture.

The average benchmark scores place the i9-10900X at 5555 overall, slightly ahead of the Xeon's 5259. The i9's nearest rivals include the Intel Celeron G6900 at an average score of 5561 (-0.1% delta), the Intel Core i9-11900KB at 5587 (-0.6%), and the Intel Core i7-12700T at 5606 (-0.9%). The Xeon's nearest rivals are the Intel Core i5-14401E at 5253 (0.1% delta), the Intel Core i7-11700B at 5241 (0.4%), and the Intel Core i9-10850K at 5240 (0.4%). These rival positions confirm that both processors sit in a similar overall performance tier, with the i9 holding a slight edge.

The Verdict

The data is unambiguous: the Intel Core i9-10900X is the faster processor in nearly every recorded benchmark. It wins seven of eight head-to-head comparisons and holds a 6.3% advantage in all Cinebench tests, plus a 41% advantage in Geekbench single-core. The only benchmark where it loses is Geekbench multicore, and even there the Xeon's lead is just 0.1%, a margin that is practically negligible.

For users prioritizing single-core performance, lightly-threaded applications, or any Cinebench-based workload, the i9-10900X is the clear choice. Its higher clock speeds (3.70 GHz base, 4.70 GHz boost) and newer Cascade Lake architecture deliver consistent wins. The unlocked multiplier also makes it the better option for those who plan to overclock.

The Xeon E5-2699A v4 is only relevant for workloads that specifically mirror the Geekbench multicore test pattern, where its 22 cores and 44 threads can match the i9. It also offers ECC memory support, which the i9 lacks, and a lower TDP of 145 W. However, its end-of-life production status, older Broadwell architecture, and locked multiplier limit its appeal. The Xeon's 55 MB L3 cache and 76.8 GB/s memory bandwidth are notable specifications, but they do not translate into benchmark victories in the recorded data.

The verdict is straightforward: choose the i9-10900X for nearly all performance-sensitive tasks. The Xeon E5-2699A v4 only makes sense for niche, highly parallel workloads where its core count can keep pace, or where ECC memory is a hard requirement. Based on the benchmark database, the i9-10900X is the superior performer.