CPU Comparison

The Intel Core i3-9100 and Intel Xeon D-1537 occupy opposite ends of the performance spectrum, despite sharing the same 42nd percentile ranking among all CPUs. The data is unambiguous: the Xeon D-1537 wins every single head-to-head benchmark in this comparison, taking all six tests by margins ranging from 11.1% to 12.2%. However, the i3-9100 is a desktop part with integrated graphics and a higher clock speed, while the Xeon D-1537 is a server/workstation processor with double the cores and threads. The choice between them is not about raw speed, the Xeon is faster, but about platform fit, power envelope, and the specific workload characteristics each design favors.

Where Each One Wins

The Xeon D-1537 wins every benchmark where the two are directly compared, but the nature of those wins reveals its strengths. In Cinebench R15 multicore, the Xeon scores 637 against the i3-9100's 566, an 11.1% advantage. That gap persists across Cinebench R20 (2657 vs 2361) and R23 (6327 vs 5622), each showing the same 11.1% delta. The single-core results are slightly larger: the Xeon leads by 12.2% in R15 (90 vs 79) and by 11.2% in both R20 (375 vs 333) and R23 (893 vs 793). This consistency is notable, the Xeon does not merely scale better with more threads; it also delivers higher per-core throughput in these tests.

The i3-9100 has no benchmark wins in this head-to-head set, but its design points to a different set of advantages. With a base clock of 3.60 GHz and a boost of 4.20 GHz, it is built for responsiveness in lightly threaded desktop tasks. The Xeon D-1537, by contrast, runs at 1700.00 MHz base and 2.30 GHz boost, far lower clocks, but compensates with 8 cores and 16 threads against the i3's 4 cores and 4 threads. For workloads that use many threads, the Xeon's parallel throughput is the deciding factor; for workloads that depend on a single fast core, the i3's clock advantage might seem relevant, but the benchmark data shows the Xeon still wins single-core tests too. The i3's only clear domain is as a desktop platform with integrated UHD Graphics 630, which the Xeon lacks entirely.

Architecture Differences

The two processors come from different Intel design generations and target different markets. The i3-9100 is Coffee Lake, built on a 14 nm process, with a die size of 126 mm². The Xeon D-1537 is Broadwell, also on 14 nm, but with a much larger die at 246 mm² and 3,200 million transistors. The Xeon's larger die accommodates its 8 cores and 16 threads, plus a different cache layout: the i3 has 6 MB of shared L3, while the Xeon provides 1.5 MB of L3 per core, which across 8 cores totals more aggregate cache.

Memory support also diverges. The i3-9100 supports DDR4 only, with dual-channel memory and a specified bandwidth of 38.4 GB/s. The Xeon D-1537 supports both DDR3 and DDR4, also dual-channel, but the benchmark database does not list a bandwidth figure for it. Both support ECC memory, a key feature for the Xeon's server role. The i3-9100 uses Intel Socket 1151, while the Xeon uses Intel BGA 1667, meaning the Xeon is soldered and not socketed for upgrades. PCIe connectivity differs as well: the i3 offers Gen 3 with 16 lanes (CPU only), while the Xeon offers Gen 3 with 24 lanes (CPU only), giving the server part more room for expansion.

The i3-9100 includes integrated UHD Graphics 630; the Xeon D-1537 has no integrated graphics at all. This is a fundamental split: the i3 is a self-contained desktop chip, while the Xeon assumes a system with a discrete GPU or a headless server configuration. The i3 was released on 2018-08-31 and is end-of-life, while the Xeon launched earlier on 2015-10-31 but remains active in production. The i3's launch MSRP was $122, and the Xeon's was $470.

Head-to-Head Benchmarks

The six head-to-head results form a clear pattern. In Cinebench R15 multicore, the Xeon D-1537 scores 637 versus the i3-9100's 566, a 11.1% lead. The single-core R15 test shows the Xeon at 90 against 79, a 12.2% margin, the largest delta in the set. Moving to R20 multicore, the Xeon posts 2657 against 2361, again 11.1% ahead. The R20 single-core result is 375 versus 333, an 11.2% gap. In R23 multicore, the Xeon hits 6327 versus 5622, another 11.1% advantage, and the R23 single-core test shows 893 versus 793, an 11.2% lead.

The consistency of these deltas is striking. Every multicore test lands at exactly 11.1%, and every single-core test lands at 11.2% or 12.2%. This suggests the performance ratio between the two chips is stable across different Cinebench versions, which all stress the same kinds of rendering workloads. The Xeon's advantage is not a fluke of one test; it is a structural property of the two designs. The i3-9100's average benchmark score is 1806, while the Xeon's is 1830, a difference of 24 points. The i3's nearest rivals include the Intel Core i3-9320 (1808, -0.1% delta) and the Intel Core i5-6600K (1816, -0.5% delta), while the Xeon's nearest rivals include the Intel Xeon E5-2608L v3 (1830, 0% delta) and the AMD Ryzen 5 4600U (1832, -0.1% delta).

The i3-9100 also has GeekBench results that the Xeon lacks: a multicore score of 3403 and a single-core score of 1290. These are not directly comparable to any Xeon number in the benchmark database, but they show the i3 is a capable performer in its own right. The Xeon has no GeekBench scores listed, so the i3's advantage in that test cannot be quantified here.

FAQ

Q: Which processor is faster in multi-core workloads?

A: The Intel Xeon D-1537 wins every multi-core benchmark in the head-to-head set. In Cinebench R15, R20, and R23 multicore tests, it scores 637, 2657, and 6327 respectively, against the i3-9100's 566, 2361, and 5622, an 11.1% advantage in each case.

Q: Does the i3-9100 win any single-core tests?

A: No. The Xeon D-1537 wins all three single-core Cinebench tests, with deltas of 12.2% in R15 (90 vs 79) and 11.2% in both R20 (375 vs 333) and R23 (893 vs 793). The i3's higher clock speeds do not translate into a win in these tests.

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

A: The i3-9100 has 4 cores and 4 threads. The Xeon D-1537 has 8 cores and 16 threads.

Q: Do both processors support ECC memory?

A: Yes, both the i3-9100 and the Xeon D-1537 list ECC memory support in their specifications.

Q: Which processor has integrated graphics?

A: Only the i3-9100 has integrated graphics, specifically UHD Graphics 630. The Xeon D-1537 has no integrated graphics.

Q: What is the difference in TDP between the two?

A: The i3-9100 has a TDP of 65, while the Xeon D-1537 has a TDP of 35.

Specification Differences

The two processors differ on nearly every key specification. The i3-9100 has 4 cores and 4 threads, while the Xeon D-1537 has 8 cores and 16 threads. The i3's base clock is 3.60 GHz and boost is 4.20 GHz; the Xeon's base clock is 1700.00 MHz and boost is 2.30 GHz. TDP is 65 for the i3 and 35 for the Xeon. Sockets are different: Intel Socket 1151 for the i3, Intel BGA 1667 for the Xeon. Architecture is Coffee Lake versus Broadwell, with the i3's die at 126 mm² and the Xeon's at 246 mm² (with 3,200 million transistors; the i3's transistor count is not listed). Cache layouts differ: the i3 has 6 MB shared L3, while the Xeon has 1.5 MB per core L3. Memory support is DDR4 only for the i3, but DDR3 and DDR4 for the Xeon. The i3 lists memory bandwidth of 38.4 GB/s; the Xeon lists none. PCIe is Gen 3 with 16 lanes for the i3 and Gen 3 with 24 lanes for the Xeon. The i3 has integrated graphics; the Xeon does not. Market segment is Desktop for the i3 and Server/Workstation for the Xeon. Production status is End-of-life for the i3 and Active for the Xeon. Release dates are 2018-08-31 for the i3 and 2015-10-31 for the Xeon.

The Verdict

The data points to a clear conclusion: the Intel Xeon D-1537 is the faster processor in every benchmark where the two are compared. It wins all six Cinebench tests, with margins between 11.1% and 12.2%, and it does so while consuming less power, 35 TDP versus 65 for the i3-9100. The Xeon also offers double the cores and four times the threads, plus a larger die and more PCIe lanes. For any workload that can use multiple cores, the Xeon is the superior choice.

The i3-9100 is not without merit. It has integrated graphics, a higher clock speed, and a lower launch MSRP of $122 versus $470. It is a desktop part, socketed for potential replacement, and it supports DDR4 with a specified bandwidth of 38.4 GB/s. Its GeekBench scores of 3403 multicore and 1290 single-core are respectable for a 4-core chip. But in the head-to-head benchmarks, it loses every test.

Who should pick which? The Xeon D-1537 is for server or workstation builds where multi-threaded performance and ECC memory matter more than integrated graphics, and where the lower TDP is an advantage. The i3-9100 is for a desktop system that needs a simple, self-contained CPU with graphics built in, but the benchmark data shows it will trail the Xeon in rendering workloads. If raw performance is the only criterion, the Xeon wins decisively. If platform simplicity and a socketed desktop chip are priorities, the i3-9100 is the only one of the two that fits that role.