Intel Xeon E-2124G vs Intel Xeon E3-1585 v5 Comparison

The Verdict

The recorded data places the Intel Xeon E3-1585 v5 clearly ahead of the Intel Xeon E-2124G across every benchmark in the comparison set. The E3-1585 v5 wins all six head-to-head tests, with deltas between 17.2% and 17.5%. Its average benchmark score is 2067, while the E-2124G averages 2034. The E3-1585 v5 sits at the 46th percentile among all CPUs, slightly above the E-2124G’s 45th percentile.

For workloads that rely heavily on multi-threaded rendering or compilation, the E3-1585 v5’s 8 threads versus 4 threads give it a structural advantage that shows up consistently in Cinebench results. The E3-1585 v5 reaches a Cinebench R23 multi-core score of 7146, which is 17.3% higher than the E-2124G’s 6092. Single-core performance also favors the E3-1585 v5, despite its lower boost clock: it scores 1008 in R23 single-core versus 860 for the E-2124G, a 17.2% gap.

The E-2124G, however, is not without merit. Its higher boost clock of 4.50 GHz and lower launch MSRP of $218 (compared to $556 for the E3-1585 v5) make it a reasonable choice for users who prioritize cost efficiency and do not need simultaneous multi-threading. The E-2124G also supports DDR4 memory with a higher bandwidth of 42.7 GB/s, and its smaller die size of 126 mm² indicates a more streamlined design.

Choose the E3-1585 v5 if your applications are thread-hungry and you need the highest Cinebench scores in this pairing. Choose the E-2124G if you favor the newer Coffee Lake architecture, the higher boost clock, or the larger memory bandwidth, and if the absence of Hyper-Threading is acceptable for your workload mix. The data does not show any benchmark where the E-2124G outperforms the E3-1585 v5.

Architecture Differences

The two processors belong to different Intel generations. The E3-1585 v5 is based on the Skylake architecture, specifically the Skylake-H mobile variant, and uses the Intel BGA 1440 socket. The E-2124G uses the Coffee Lake architecture, specifically Coffee Lake-S WS, and fits the Intel Socket 1151. Both are built on a 14 nm process node at Intel’s foundry.

Core and thread counts differ significantly. The E3-1585 v5 has 4 cores and 8 threads, enabled by Hyper-Threading. The E-2124G also has 4 cores but only 4 threads, meaning it processes one thread per core. This difference directly explains the multi-core benchmark gaps.

Cache hierarchies are identical in structure: both have 64 KB L1 per core, 256 KB L2 per core, and 8 MB shared L3. The E3-1585 v5 has a larger die size of 171 mm² and 2,300 million transistors, while the E-2124G has a die size of 126 mm² with no transistor count recorded in the database.

Integrated graphics differ as well. The E3-1585 v5 carries Iris Pro Graphics P580, while the E-2124G has HD Graphics P630. Both support ECC memory, and both use PCIe Gen 3 with 16 lanes from the CPU. Memory support diverges: the E3-1585 v5 accepts DDR3 and DDR4, while the E-2124G supports only DDR4. Memory bandwidth is higher on the E-2124G at 42.7 GB/s versus 34.1 GB/s for the E3-1585 v5.

The release dates are separated by about two years. The E3-1585 v5 launched on 2016-05-30, and the E-2124G launched on 2018-07-11. Both are marked as end-of-life production status. Neither has an unlocked multiplier.

Head-to-Head Benchmarks

The head-to-head data covers six Cinebench tests, and the E3-1585 v5 wins every one. The smallest margin is 17.2%, and the largest is 17.5%.

In Cinebench R15 multi-core, the E3-1585 v5 scores 720 against 613 for the E-2124G, a 17.5% advantage. The single-core R15 result follows the same pattern: 101 versus 86, a 17.4% lead. These early Cinebench versions show the E3-1585 v5’s threading advantage in multi-core, but the single-core win is notable because the E-2124G has a higher boost clock (4.50 GHz versus 3.90 GHz). The data suggests the E3-1585 v5’s architecture extracts more instructions per clock in these tests.

Cinebench R20 multi-core gives the E3-1585 v5 a score of 3001 against 2558, a 17.3% delta. Single-core R20 shows 423 versus 361, a 17.2% gap. The consistency of the delta across R15 and R20 indicates a stable performance ratio rather than a workload-specific anomaly.

Cinebench R23 multi-core repeats the 17.3% margin, with the E3-1585 v5 at 7146 and the E-2124G at 6092. Single-core R23 shows 1008 versus 860, again 17.2%. The E3-1585 v5’s single-core R23 score of 1008 crosses the 1000-point mark, while the E-2124G stays below 900.

The E-2124G has additional Geekbench scores in the database: 4263 multi-core and 1438 single-core. The E3-1585 v5 does not have recorded Geekbench results, so no direct comparison is possible for that suite. In the recorded Cinebench data, the E3-1585 v5 leads by a uniform margin of roughly 17% in both single-threaded and multi-threaded tests.

Specification Differences

The following fields differ between the two processors:

• Threads: 8 (E3-1585 v5) versus 4 (E-2124G)
• Base clock: 3.50 GHz (E3-1585 v5) versus 3.40 GHz (E-2124G)
• Boost clock: 3.90 GHz (E3-1585 v5) versus 4.50 GHz (E-2124G)
• TDP: 65 W (E3-1585 v5) versus 71 W (E-2124G)
• Socket: Intel BGA 1440 (E3-1585 v5) versus Intel Socket 1151 (E-2124G)
• Architecture: Skylake (E3-1585 v5) versus Coffee Lake (E-2124G)
• Codename: Skylake-H (E3-1585 v5) versus Coffee Lake-S WS (E-2124G)
• Die size: 171 mm² (E3-1585 v5) versus 126 mm² (E-2124G)
• Transistors: 2,300 million (E3-1585 v5) versus not recorded (E-2124G)
• Memory support: DDR3, DDR4 (E3-1585 v5) versus DDR4 only (E-2124G)
• Memory bandwidth: 34.1 GB/s (E3-1585 v5) versus 42.7 GB/s (E-2124G)
• Integrated graphics: Iris Pro Graphics P580 (E3-1585 v5) versus HD Graphics P630 (E-2124G)
• Release date: 2016-05-30 (E3-1585 v5) versus 2018-07-11 (E-2124G)
• Launch MSRP: $556 (E3-1585 v5) versus $218 (E-2124G)
• Part number: SR2RB (E3-1585 v5) versus SR3WL (E-2124G)

Fields that are identical include: manufacturer (Intel), cores (4), process node (14 nm), foundry (Intel), L1 cache (64 KB per core), L2 cache (256 KB per core), L3 cache (8 MB shared), memory bus (dual-channel), ECC support (true), PCIe (Gen 3, 16 lanes), market segment (Server/Workstation), production status (End-of-life), and multiplier unlocked (false).

FAQ

Q: Which CPU has more threads, and does that affect benchmark scores?

A: The Intel Xeon E3-1585 v5 has 8 threads, while the Intel Xeon E-2124G has 4 threads. In Cinebench R23 multi-core, the E3-1585 v5 scores 7146 versus 6092 for the E-2124G, a 17.3% advantage. The threading difference is the most likely structural cause of the multi-core gap.

Q: Does the higher boost clock of the E-2124G help it win single-core tests?

A: No. Despite the E-2124G’s boost clock of 4.50 GHz (versus 3.90 GHz for the E3-1585 v5), the E3-1585 v5 wins every single-core test. In Cinebench R23 single-core, the E3-1585 v5 scores 1008 against 860 for the E-2124G, a 17.2% lead.

Q: What are the average benchmark scores for these two CPUs?

A: The E3-1585 v5 has an average benchmark score of 2067, and the E-2124G has an average score of 2034. The E3-1585 v5 is at the 46th percentile among all CPUs, while the E-2124G is at the 45th percentile.

Q: Do both CPUs support ECC memory?

A: Yes, both the E3-1585 v5 and the E-2124G support ECC memory. However, the E3-1585 v5 supports both DDR3 and DDR4, while the E-2124G supports only DDR4. The E-2124G has higher memory bandwidth at 42.7 GB/s versus 34.1 GB/s.

Q: Which CPU is newer and what socket does each use?

A: The E-2124G is newer, released on 2018-07-11, versus the E3-1585 v5’s release on 2016-05-30. The E3-1585 v5 uses Intel BGA 1440, while the E-2124G uses Intel Socket 1151.

Q: How many Cinebench tests does each CPU win in the head-to-head comparison?

A: The E3-1585 v5 wins all six head-to-head Cinebench tests. The E-2124G wins none. The deltas range from 17.2% to 17.5% in favor of the E3-1585 v5.