Intel Core i3-7300T vs Intel Xeon D-1527 Comparison

The Intel Core i3-7300T and Intel Xeon D-1527 occupy the same 34th percentile of all CPUs, yet their benchmark profiles could not be more different. The Xeon D-1527 wins every single head-to-head benchmark in the data, but the Core i3-7300T matches it in average score (1211 vs 1207). This paradox—identical percentile placement with a clean sweep for one chip—suggests the two processors are optimized for entirely different workloads, a hypothesis the architecture data strongly supports.

Head-to-Head Benchmarks

The Xeon D-1527 dominates every Cinebench comparison, with consistent margins across both multi-core and single-core tests. In Cinebench R15 multi-core, the Xeon scores 420 against the Core i3's 354, a delta of -15.7% from the i3's perspective. That same -15.7% delta repeats in Cinebench R20 multi-core (1753 vs 1477) and Cinebench R23 multi-core (4176 vs 3519). The consistency of this margin—exactly -15.7% in all three multi-core tests—indicates a stable performance gap that scales linearly with workload intensity.

Single-core results tell a similar story, though the gap narrows slightly. The Xeon leads Cinebench R20 single-core by -15.8% (247 vs 208) and Cinebench R23 single-core by -15.8% (589 vs 496). Notably, the Xeon D-1527 lacks a Cinebench R15 single-core entry in the head-to-head data, but its R20 and R23 single-core wins prove this is not merely a multi-core advantage. The Xeon's higher boost clock of 2.70 GHz against the i3's fixed 3.50 GHz base clock does not translate into a single-core deficit; the Xeon still wins by roughly 16% in both available single-core tests.

The aggregate benchmark score reinforces this picture. The Core i3-7300T averages 1211 across all tests, while the Xeon D-1527 averages 1207—a difference of just 4 points, or roughly 0.3%. This near-identical average masks the fact that the Xeon wins all five head-to-head contests. The implication is that the Core i3 must have strengths elsewhere—likely in the tests not included in the head-to-head set—that pull its average up to parity. The data does not specify which tests those are, but the architecture differences suggest a logical explanation.

Where Each One Wins

The Xeon D-1527 wins every benchmark where both chips are tested, making the "where each one wins" section unusually lopsided. The Xeon's wins span Cinebench R15, R20, and R23, covering both single-core and multi-core variants. This breadth suggests the Xeon is not merely a multi-core specialist; it is simply the faster processor in every measured scenario.

The Core i3-7300T, by contrast, wins zero head-to-head benchmarks. Its only path to relevance is its 1211 average score, which edges out the Xeon's 1207. This 0.3% aggregate advantage implies the i3 performs better in benchmarks not shared between the two—likely lighter, latency-sensitive tasks where its 3.50 GHz fixed clock and desktop-oriented design shine. The data does not include those tests, but the architecture section provides clues: the i3's Kaby Lake architecture and desktop socket suggest responsiveness in single-threaded, low-core-count workloads that Cinebench may not fully capture.

For real-world use, the Xeon D-1527 is the clear choice for any multi-threaded rendering, compilation, or server workload. The Core i3-7300T's case rests on its aggregate score parity, which hints at strengths in scenarios the head-to-head data does not cover. A desktop user running mixed workloads might find the i3's higher base clock beneficial, but the benchmark evidence gives no direct support for that claim.

Architecture Differences

The two chips share a 14 nm Intel process node, but diverge sharply from there. The Core i3-7300T uses Kaby Lake architecture with 2 cores and 4 threads, while the Xeon D-1527 uses Broadwell with 4 cores and 8 threads. This core-count difference—double in the Xeon's favor—explains the multi-core benchmark gap, but not the single-core gap. The Xeon also has a boost clock of 2.70 GHz versus the i3's fixed 3.50 GHz base clock; a 0.80 GHz clock deficit in the Xeon's favor does not exist, yet the Xeon still wins single-core tests. This suggests the Xeon's architecture is more efficient per clock, or that Cinebench's single-core test benefits from the Xeon's additional cache.

Cache configurations diverge significantly. The Core i3 has 64 KB L1 per core, 256 KB L2 per core, and 4 MB shared L3. The Xeon D-1527 has the same L1 and L2 per core, but 1.5 MB L3 per core. With 4 cores, that totals 6 MB of L3—50% more than the i3's 4 MB. The Xeon's larger aggregate cache likely contributes to its single-core advantage, as more data can reside closer to the execution units.

Memory support also differs. The Core i3 supports only DDR4 with dual-channel memory and 38.4 GB/s bandwidth. The Xeon D-1527 supports both DDR3 and DDR4, also dual-channel, but lists no memory bandwidth figure. The Xeon adds ECC memory support, which the i3 lacks—a critical feature for server reliability. The Xeon also provides 24 PCIe Gen 3 lanes versus the i3's 16, both CPU-only. The Xeon's transistor count is 3,200 million on a 246 mm² die, while the i3's transistor count and die size are not listed. The Xeon's socket is Intel BGA 1667, soldered to the board, versus the i3's socketed Intel Socket 1151. The i3 integrates Intel HD 630 graphics; the Xeon has no integrated graphics. The Xeon's market segment is Server/Workstation; the i3's is Desktop. Release dates differ by over a year: the i3 launched in January 2017, the Xeon in October 2015.

FAQ

Q: Which CPU has more cores and threads?

A: The Intel Xeon D-1527 has 4 cores and 8 threads, double the Core i3-7300T's 2 cores and 4 threads. This core advantage directly explains the Xeon's multi-core benchmark wins.

Q: Does the Core i3-7300T have a higher clock speed?

A: Yes, the Core i3-7300T runs at a fixed 3.50 GHz base clock with no boost, while the Xeon D-1527 has a 2.20 GHz base clock and a 2.70 GHz boost clock. Despite the i3's higher base clock, the Xeon wins all single-core benchmarks.

Q: Which processor supports ECC memory?

A: Only the Intel Xeon D-1527 supports ECC memory. The Core i3-7300T does not, marking a clear differentiation for server reliability use cases.

Q: What is the memory bandwidth of the Core i3-7300T?

A: The Core i3-7300T has 38.4 GB/s memory bandwidth over a dual-channel DDR4 bus. The Xeon D-1527's memory bandwidth is not listed, though it supports both DDR3 and DDR4.

Q: How do their average benchmark scores compare?

A: The Core i3-7300T averages 1211, and the Xeon D-1527 averages 1207—a difference of only 4 points (0.3%). Both sit in the 34th percentile of all CPUs.

Q: Which CPU has integrated graphics?

A: The Core i3-7300T includes Intel HD 630 integrated graphics. The Xeon D-1527 has no integrated graphics, requiring a discrete GPU for display output.

Specification Differences

| Specification | Intel Core i3-7300T | Intel Xeon D-1527 |

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

| Cores | 2 | 4 |

| Threads | 4 | 8 |

| Base Clock | 3.50 GHz | 2.20 GHz |

| Boost Clock | None | 2.70 GHz |

| Socket | Intel Socket 1151 | Intel BGA 1667 |

| Architecture | Kaby Lake | Broadwell |

| Codename | Kaby Lake | Broadwell |

| Generation | Core i3 (Kaby Lake) | Xeon D (Broadwell-DE) |

| Transistors | Not listed | 3,200 million |

| Die Size | Not listed | 246 mm² |

| L3 Cache | 4 MB (shared) | 1.5 MB (per core) |

| Memory Support | DDR4 | DDR3, DDR4 |

| Memory Bandwidth | 38.4 GB/s | Not listed |

| ECC Memory | No | Yes |

| PCIe Lanes | Gen 3, 16 Lanes | Gen 3, 24 Lanes |

| Integrated Graphics | Intel HD 630 | None |

| Market Segment | Desktop | Server/Workstation |

| Release Date | 2017-01-02 | 2015-10-31 |

| Launch MSRP | Not listed | $213 |

| Part Number | SR35M | SR2DK |

The Verdict

The data points decisively toward the Intel Xeon D-1527 for anyone whose workload matches the benchmarks tested. It wins all five head-to-head Cinebench tests, with consistent 15.7-15.8% margins in both single-core and multi-core scenarios. The Xeon's 4 cores and 8 threads double the i3's compute resources, its 1.5 MB per-core L3 cache provides more total cache, and its ECC memory support and 24 PCIe lanes make it suitable for server duty. The launch MSRP of $213 for the Xeon, though the i3's is not listed, further positions it as the more capable part.

The Core i3-7300T's case is narrower but not empty. Its 1211 average benchmark score slightly exceeds the Xeon's 1207, indicating strengths outside the head-to-head tests. Its 3.50 GHz fixed clock, desktop socket, and integrated HD 630 graphics make it a more versatile desktop component for users who do not need ECC or a soldered server platform. The i3's 38.4 GB/s memory bandwidth is a listed advantage over the Xeon's unlisted figure, and its Kaby Lake architecture is a generation newer.

The verdict depends on the use case. For multi-threaded rendering, server workloads, or any task leveraging ECC memory, the Xeon D-1527 is the only rational choice—it wins every tested benchmark. For a desktop system where integrated graphics, socketed upgradeability, and a higher base clock matter more than raw core count, the Core i3-7300T remains viable, though its benchmark losses mean it cannot claim performance superiority. The data does not support choosing the i3 for raw speed; it only supports choosing it for platform features and the unmeasured strengths hinted at by its slightly higher average score.