Intel Core i3-7100T vs Intel Xeon E5-1607 v3 Comparison

FAQ

Q: Which processor has more physical cores?

A: The Intel Xeon E5-1607 v3 has 4 cores and 4 threads, while the Intel Core i3-7100T has 2 cores and 4 threads. The Xeon offers double the physical core count.

Q: Do these CPUs support ECC memory?

A: The Intel Xeon E5-1607 v3 supports ECC memory. The Intel Core i3-7100T does not support ECC memory.

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

A: The Xeon E5-1607 v3 provides 59.7 GB/s of memory bandwidth via its quad-channel memory bus. The Core i3-7100T provides 38.4 GB/s through a dual-channel memory bus.

Q: Which processor is more energy-efficient?

A: The Core i3-7100T has a 35 W TDP, while the Xeon E5-1607 v3 has a 140 W TDP. The Core i3 consumes significantly less power.

Q: Which processor has a higher single-core benchmark score?

A: The Xeon E5-1607 v3 wins in single-core tests. In Cinebench R23 single-core, the Xeon scores 591 versus the Core i3's 448, a 24.2% advantage.

Q: Are both processors still in production?

A: No. The Core i3-7100T is listed as Active, while the Xeon E5-1607 v3 is End-of-life.

Architecture Differences

The Intel Core i3-7100T and Intel Xeon E5-1607 v3 represent two distinct design philosophies from different eras. The Core i3-7100T is built on Kaby Lake architecture using a 14 nm process node, while the Xeon E5-1607 v3 uses Haswell-EP architecture on a 22 nm process node. This process gap explains part of the efficiency difference: the newer 14 nm node allows the Core i3 to achieve its 35 W TDP, whereas the older 22 nm node contributes to the Xeon's 140 W TDP.

The Xeon E5-1607 v3 is a server and workstation part, evidenced by its transistor count of 2,600 million and die size of 356 mm². The Core i3-7100T lacks published transistor and die size data in the database. The Xeon also carries a much larger last-level cache: 10 MB shared L3 versus 3 MB shared L3 on the Core i3. Both have 64 KB L1 and 256 KB L2 per core.

Memory architecture differs substantially. The Core i3-7100T uses a dual-channel DDR4 memory bus with 38.4 GB/s bandwidth and no ECC support. The Xeon E5-1607 v3 uses a quad-channel DDR4 memory bus with 59.7 GB/s bandwidth and ECC support. This makes the Xeon clearly oriented toward reliability and memory-intensive workloads.

PCIe connectivity also differs. The Core i3-7100T provides Gen 3 with 16 lanes (CPU only). The Xeon E5-1607 v3 provides Gen 3 with 40 lanes (CPU only), more than double the expansion capability. The Core i3 includes integrated graphics (Intel HD 630), while the Xeon has no integrated graphics at all, confirming its workstation role where a discrete GPU is expected.

The Core i3-7100T fits the Intel Socket 1151, while the Xeon E5-1607 v3 uses Intel Socket 2011-3. The release dates are also different: the Core i3 was released in 2017, while the Xeon was released in 2014. Both processors come with locked multipliers, so neither supports overclocking. The production status further separates them: the Core i3 remains Active, while the Xeon is End-of-life.

The Verdict

The benchmark data paints a clear picture. The Intel Xeon E5-1607 v3 wins all five head-to-head benchmark comparisons, with a consistent margin of approximately 24% across every test. In Cinebench R23 multi-core, the Xeon scores 4193 versus the Core i3's 3175. In single-core R23, the Xeon scores 591 versus 448. This consistency suggests the Xeon's advantage is systemic, not workload-specific.

However, the Core i3-7100T has its own strengths. Its 35 W TDP versus 140 W TDP makes it dramatically more power-efficient. It also includes integrated graphics, which the Xeon lacks entirely. For a desktop user building a compact, low-power system without a discrete GPU, the Core i3 is the sensible choice. The data shows the Core i3 holds its own in the broader market, with an average benchmark score of 1258 and a 34th percentile ranking, matching the Xeon's percentile exactly.

For workstation or server workloads requiring ECC memory, quad-channel bandwidth, and maximum multi-core throughput, the Xeon E5-1607 v3 is the clear pick. The 24% lead in every recorded benchmark, combined with 4 physical cores and 10 MB of L3 cache, makes it the stronger compute part. The Core i3's 2 cores and 3 MB of L3 cache simply cannot match that throughput.

The production status matters too. The Core i3-7100T is Active, meaning it remains available. The Xeon E5-1607 v3 is End-of-life, so sourcing it may be more difficult. Users who need a current, supported platform with low power draw should choose the Core i3. Users who prioritize raw compute and memory bandwidth, and can accept an older platform, should choose the Xeon.

Specification Differences

| Specification | Intel Core i3-7100T | Intel Xeon E5-1607 v3 |

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

| Cores | 2 | 4 |

| Threads | 4 | 4 |

| Base Clock | 3.40 GHz | 3.10 GHz |

| TDP | 35 W | 140 W |

| Socket | Intel Socket 1151 | Intel Socket 2011-3 |

| Architecture | Kaby Lake | Haswell |

| Codename | Kaby Lake | Haswell-EP |

| Generation | Core i3 (Kaby Lake) | Xeon E5 (Haswell-EP) |

| Process Node | 14 nm | 22 nm |

| Transistors | Not specified | 2,600 million |

| Die Size | Not specified | 356 mm² |

| L3 Cache | 3 MB (shared) | 10 MB (shared) |

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

| Memory Bandwidth | 38.4 GB/s | 59.7 GB/s |

| ECC Memory | No | Yes |

| PCIe | Gen 3, 16 Lanes (CPU only) | Gen 3, 40 Lanes (CPU only) |

| Integrated Graphics | Intel HD 630 | None |

| Market Segment | Desktop | Server/Workstation |

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

| Release Date | 2017-01-02 | 2014-09-07 |

| Part Number | SR35P | QGDASR20M |

Head-to-Head Benchmarks

The Xeon E5-1607 v3 dominates every recorded benchmark comparison. The margin is remarkably uniform across all tests, hovering around 24%. This consistency indicates a fundamental performance gap rather than a test-specific anomaly.

In Cinebench R15 multi-core, the Xeon scores 422 while the Core i3 scores 319, a 24.4% difference. This is the largest relative gap in the dataset. The Xeon's four physical cores clearly pay off in this legacy rendering workload.

Cinebench R20 multi-core shows a similar story: Xeon 1761 versus Core i3 1333, a 24.3% difference. The single-core R20 test follows the same pattern, with the Xeon at 248 and the Core i3 at 188, a 24.2% gap. This is notable because single-core performance often favors newer architectures, but here the Xeon's higher base clock and larger cache overcome the Core i3's architectural advantage.

Cinebench R23 multi-core confirms the trend: Xeon 4193 versus Core i3 3175, a 24.3% difference. The single-core R23 test shows Xeon 591 versus Core i3 448, again 24.2%. The uniformity of these deltas is striking; the Xeon is consistently about one-quarter faster across the board.

The Core i3-7100T does have additional benchmark data that the Xeon lacks. The database records Geekbench multi-core at 2230 and single-core at 1111 for the Core i3, and Cinebench R15 single-core at 59 for the Xeon. These tests do not overlap, so direct comparison is not possible for those specific metrics.

Average benchmark scores tell a slightly different story. The Core i3-7100T has an average score of 1258, while the Xeon E5-1607 v3 averages 1212. This places the Core i3 slightly ahead in aggregate, despite losing every head-to-head test. The reason is that the Core i3's benchmark set includes Geekbench scores, which are not recorded for the Xeon. The average benchmark score is thus calculated over different test sets, making it a less reliable comparison metric than the head-to-head tests.

Both processors sit at the 34th percentile of all CPUs in the database, indicating they occupy a similar overall market position despite their performance differences. The Xeon's nearest rivals include the Core i3-7300T and Xeon E5645, both at 1211 average scores with a 0.1% delta. The Core i3's nearest rivals include the Core i7-3615QM and AMD Athlon 200GE, both around 1260 average scores with a 0.2% delta.

The head-to-head results are unambiguous: the Xeon E5-1607 v3 wins all five comparisons, with no wins for the Core i3-7100T. For users selecting purely on compute performance, the Xeon is the superior part. For users weighing power consumption, integrated graphics, and production availability, the Core i3 remains a viable alternative.