Intel Xeon D-1567 vs Intel Xeon D-1577 Comparison

Where Each One Wins

The Intel Xeon D-1567 and Intel Xeon D-1577 are both Broadwell-DE server processors built for the same BGA 1667 socket, yet the benchmark record splits cleanly in one direction. Across every recorded Cinebench workload, the Xeon D-1567 takes the win. It leads in all six head-to-head tests, covering both single-threaded and fully threaded rendering scenarios. The Xeon D-1577, despite carrying more cores and threads, does not post a single victory in the database’s comparison set. That outcome is not a matter of one outlier benchmark; it repeats consistently from Cinebench R15 through R23, in both multicore and singlecore modes.

The strongest case for the Xeon D-1567 is in single-threaded work. Its base clock of 2.10 GHz and boost clock of 2.70 GHz give it a clear frequency advantage over the D-1577, which runs at a 1.30 GHz base and 2.10 GHz boost. In Cinebench R15 singlecore, the D-1567 scores 136 versus 133 for the D-1577, a 2.3% margin. That same pattern appears in R20 singlecore (567 versus 556) and R23 singlecore (1352 versus 1325), with the D-1567 ahead by 2% in each. For workloads that depend on per-core responsiveness, such as lightly threaded server tasks or legacy application compatibility, the D-1567 is the better fit.

Multicore results are closer, which is where the D-1577’s extra silicon should matter. The D-1577 has 16 cores and 32 threads, while the D-1567 has 12 cores and 24 threads. Yet the D-1567 still edges ahead in Cinebench R15 multicore (965 versus 946), R20 multicore (4022 versus 3943), and R23 multicore (9578 versus 9389), each by 2%. This suggests that the D-1577’s higher core count does not translate into a throughput advantage in these rendering tests, likely because its much lower clock speeds offset the additional cores. The D-1567 wins all six comparisons, but the multicore deltas are small enough that the D-1577 remains competitive for highly parallel server workloads that scale well beyond 12 cores.

In terms of overall standing, the D-1567 sits at the 51st percentile among all CPUs in the database, with an average benchmark score of 2770. The D-1577 lands at the 50th percentile with an average score of 2715. That 2% gap in average score mirrors the head-to-head deltas. The D-1567’s nearest rivals include the AMD Ryzen 3 PRO 4350GE (average 2767, within 0.1%), the AMD Ryzen 3 PRO 4350G (2774, 0.2% behind), and the Intel Core i7-5930K (2775, 0.2% behind). The D-1577 sits directly alongside the Intel Core i7-11390H (2715, 0% delta) and within 0.2% of the AMD Ryzen 5 PRO 5650U and Intel Xeon E-2226G. For buyers choosing between these two Xeon D parts, the data says the D-1567 is the faster chip in every measured scenario, while the D-1577 offers more cores at a lower thermal envelope.

Architecture Differences

Both processors come from the same Broadwell generation, specifically the Xeon D (Broadwell-DE) family. They share the identical 14 nm manufacturing process, built at Intel’s foundry, with the same transistor count of 3,200 million and the same die size of 246 mm². The cache hierarchy is also identical on paper: each core gets 64 KB of L1 cache and 256 KB of L2 cache, while L3 is allocated at 1.5 MB per core. That means the D-1567, with 12 cores, has 18 MB of total L3 cache, while the D-1577, with 16 cores, has 24 MB. Both support DDR3 and DDR4 memory in a dual-channel configuration, and both have ECC memory enabled. PCIe connectivity is the same: Gen 3 with 24 lanes from the CPU only.

The critical architectural split is core count and clock speed. The D-1577 has 16 cores and 32 threads, a 33% increase in core count over the D-1567’s 12 cores and 24 threads. However, the D-1567 operates at a 2.10 GHz base clock and 2.70 GHz boost clock, while the D-1577 drops to a 1.30 GHz base and 2.10 GHz boost. That is a substantial frequency gap: the D-1567’s base clock is 62% higher, and its boost clock is 29% higher. The thermal design point tells the same story. The D-1567 is rated at 65 W TDP, while the D-1577 is rated at 45 W TDP. The D-1577 achieves its lower power draw by running at much lower clocks, despite having more cores.

Both chips support the same memory and expansion options, so there is no difference in platform capability. Neither has integrated graphics, and neither has an unlocked multiplier. The launch MSRP for the D-1567 is $1199, while the D-1577 carries a launch MSRP of $1379. The production status for both is Active, and both were released on the same date, 2016-02-23. The part numbers differ: SR2M3 for the D-1567 and SR2M2 for the D-1577.

Head-to-Head Benchmarks

The recorded head-to-head data covers six Cinebench workloads, and the D-1567 wins all of them. The largest margin is in Cinebench R15 singlecore, where the D-1567 scores 136 against the D-1577’s 133, a delta of 2.3%. That is the only test where the gap exceeds 2%. Every other test, including both multicore and the remaining singlecore runs, shows a 2% advantage for the D-1567.

In Cinebench R15 multicore, the D-1567 posts 965 points versus 946 for the D-1577. The R20 multicore test shows 4022 versus 3943, and R23 multicore shows 9578 versus 9389. On the singlecore side, R20 gives 567 versus 556, and R23 gives 1352 versus 1325. The consistency of these deltas is notable: regardless of whether the workload is heavily threaded or purely single-threaded, the D-1567 maintains a small but reliable lead.

What makes this interesting is the core count inversion. The D-1577 has 16 cores to the D-1567’s 12, yet it loses in multicore rendering. In R23 multicore, the D-1567’s 9578 points come from fewer cores but higher clocks. If the D-1577’s extra cores were fully utilized, one might expect it to close the gap or pull ahead. The data suggests that Cinebench’s rendering engine does not scale perfectly with core count, or that the D-1577’s low base clock of 1.30 GHz creates a bottleneck that four additional cores cannot overcome. The 2% multicore deficit for the D-1577 is consistent across all three Cinebench versions, pointing to a fundamental clock-speed limitation rather than a benchmark-specific quirk.

The average benchmark scores reinforce this picture. The D-1567 averages 2770 across its benchmark suite, while the D-1577 averages 2715. That 55-point gap is roughly 2%, matching the head-to-head deltas. In the broader database, the D-1567 ranks at the 51st percentile of all CPUs, and the D-1577 ranks at the 50th. For a server processor, the D-1567’s edge in single-threaded performance is often more valuable than raw core count, since many server workloads involve latency-sensitive requests that benefit from higher clocks.

FAQ

Q: Which processor is faster in single-threaded workloads?

A: The Intel Xeon D-1567. It wins all three singlecore Cinebench tests: R15 (136 versus 133, 2.3% ahead), R20 (567 versus 556, 2% ahead), and R23 (1352 versus 1325, 2% ahead).

Q: Does the Intel Xeon D-1577’s higher core count make it faster in multicore tests?

A: No. Despite having 16 cores versus the D-1567’s 12, the D-1577 loses all three multicore tests by 2%. In R23 multicore, the D-1567 scores 9578 versus 9389 for the D-1577.

Q: What is the thermal design difference between these two chips?

A: The D-1567 is rated at 65 W TDP, while the D-1577 is rated at 45 W TDP. The D-1577 achieves its lower power draw with a much lower base clock of 1.30 GHz, compared to 2.10 GHz for the D-1567.

Q: Do these processors support ECC memory?

A: Yes, both support ECC memory. They also both support DDR3 and DDR4 in a dual-channel configuration.

Q: Are the cache sizes different between the two?

A: The per-core cache is identical: 64 KB L1, 256 KB L2, and 1.5 MB L3 per core. Total L3 cache differs due to core count, with 18 MB on the D-1567 (12 cores) and 24 MB on the D-1577 (16 cores).

Q: Which chip has a higher boost clock?

A: The D-1567 boosts to 2.70 GHz, while the D-1577 boosts to 2.10 GHz.

Specification Differences

The two processors share most platform specifications, but the following fields differ between them:

• Cores: 12 (D-1567) versus 16 (D-1577)
• Threads: 24 (D-1567) versus 32 (D-1577)
• Base Clock: 2.10 GHz (D-1567) versus 1.30 GHz (D-1577)
• Boost Clock: 2.70 GHz (D-1567) versus 2.10 GHz (D-1577)
• TDP: 65 W (D-1567) versus 45 W (D-1577)
• Total L3 Cache: 18 MB (D-1567, 12 cores at 1.5 MB per core) versus 24 MB (D-1577, 16 cores at 1.5 MB per core)
• Launch MSRP: 1199 (D-1567) versus 1379 (D-1577)
• Part Number: SR2M3 (D-1567) versus SR2M2 (D-1577)
• Average Benchmark Score: 2770 (D-1567) versus 2715 (D-1577)
• Percentile vs All CPUs: 51 (D-1567) versus 50 (D-1577)

All other recorded specifications are identical: 14 nm process, 3,200 million transistors, 246 mm² die size, Intel BGA 1667 socket, Broadwell architecture, dual-channel memory support for DDR3 and DDR4, ECC memory support, Gen 3 PCIe with 24 lanes, no integrated graphics, server/workstation market segment, Active production status, and a release date of 2016-02-23.