Intel Core i5-1335UE vs Intel Xeon E-2126G Comparison

Head-to-Head Benchmarks

The recorded data shows a clean sweep for the Intel Core i5-1335UE across all six Cinebench comparisons. The largest margin comes in the multicore tests, where the i5-1335UE posts a 13.1% advantage in both Cinebench R15 and R23, scoring 1013 versus 896 and 10052 versus 8891 respectively. The single-core results tell a similar story: a 12.7% lead in R15 (142 against 126) and a 13.1% lead in R23 (1419 against 1255). The R20 tests sit squarely between these figures, with the i5-1335UE ahead by 13% in multicore (4221 versus 3734) and 12.9% in single-core (595 versus 527).

The consistency of the delta is notable. Every head-to-head benchmark lands between 12.7% and 13.1%, which suggests the performance gap is structural rather than workload-dependent. The Xeon E-2126G never manages to close the gap in any test, despite its higher base clock. The average benchmark score in the database reflects this separation as well: the i5-1335UE averages 2907, while the Xeon E-2126G averages 2842. Both processors sit at the 51st percentile of all CPUs, meaning the gap between them is narrow in absolute terms, but the direction of the advantage is consistent.

The Xeon does have one additional data point not shared by the i5-1335UE: Geekbench results. The Xeon E-2126G scores 5743 in Geekbench multicore and 1565 in single-core. Since the i5-1335UE has no recorded Geekbench score in the database, this cannot be compared directly, but the Xeon's Cinebench numbers are uniformly lower than the i5's, so the Geekbench result does not offset the overall pattern.

The nearest rival data places the i5-1335UE in a tight cluster. It sits 0.1% behind the AMD Ryzen 5 PRO 1600, 0.1% ahead of the Intel Xeon E-2414, 0.2% behind the Intel Xeon E-2186M, and 0.5% behind the AMD Ryzen Embedded V3C14. The Xeon E-2126G, meanwhile, is 0.1% ahead of the Intel Core i7-6800K, 0.2% ahead of the Intel Core i5-10600, 0.5% ahead of the AMD Ryzen 3 PRO 5450U, and 0.6% behind the Intel Core i7-11370H. These positions reinforce that both CPUs occupy a similar performance tier, but the i5-1335UE sits slightly higher within that tier.

Architecture Differences

The two processors come from different Intel design eras. The i5-1335UE is built on Raptor Lake architecture, specifically the Raptor Lake-U codename, and uses a 10 nm process node. The Xeon E-2126G is Coffee Lake architecture, codename Coffee Lake-S WS, on a 14 nm node. The die size for the Xeon is recorded as 154 mm², while the i5-1335UE has no die size listed in the database.

Core counts differ substantially. The i5-1335UE has 10 cores and 12 threads, while the Xeon E-2126G has 6 cores and 6 threads. That means the i5 offers four additional physical cores and six additional threads. The Xeon has no hyper-threading, which explains why its thread count equals its core count. The i5-1335UE's 10-core configuration likely contributes to its multicore lead in Cinebench, although the per-core cache allocation is also different.

Cache hierarchies are structured differently. The i5-1335UE has 80 KB of L1 per core and 1.25 MB of L2 per core, with 12 MB of shared L3. The Xeon E-2126G has 64 KB of L1 per core and 256 KB of L2 per core, also with 12 MB of shared L3. The total L3 is identical at 12 MB, but the per-core L2 allocation is much larger on the i5, which can help with per-thread working sets.

Memory support diverges as well. The i5-1335UE supports both DDR4 and DDR5 over a dual-channel bus, while the Xeon E-2126G supports only DDR4 over a dual-channel bus. The Xeon does have a recorded memory bandwidth figure of 42.7 GB/s, but no comparable bandwidth number exists for the i5 in the database. ECC memory is another differentiator: the Xeon supports ECC, while the i5 does not.

PCIe capabilities favor the Xeon in lane count but the i5 in generation. The Xeon E-2126G provides Gen 3 with 16 lanes, while the i5-1335UE provides Gen 4 with 8 lanes. The Xeon's 16 lanes suit workstation expansion, while the i5's Gen 4 bandwidth per lane is higher but the total lane count is lower.

Integrated graphics differ in name and likely capability. The i5-1335UE carries Iris Xe Graphics with 80 execution units, while the Xeon E-2126G carries HD Graphics P630. Both are integrated solutions, but the Iris Xe configuration is the more modern design.

The platform targets are clearly different. The i5-1335UE uses Intel BGA 1744 and is classified as a Mobile part. The Xeon E-2126G uses Intel Socket 1151 and is classified as Server/Workstation. The production status also differs: the i5 is Active, while the Xeon is End-of-life. The release dates are 2023-01-03 for the i5 and 2018-07-11 for the Xeon. The Xeon has a launch MSRP of $255, while the i5 has no recorded launch MSRP.

Where Each One Wins

Based on the six head-to-head Cinebench results, the i5-1335UE wins every recorded comparison. There is no benchmark in the shared set where the Xeon E-2126G takes the lead. The i5's advantage is slightly larger in multicore tests (13.1% in R15 and R23, 13% in R20) than in single-core tests (12.7% in R15, 12.9% in R20, 13.1% in R23), but the difference between single-core and multicore margins is only a few tenths of a percentage point.

The i5-1335UE is the better choice for any workload that relies on the recorded Cinebench metrics. Its 10 cores and 12 threads give it a structural edge in threaded rendering tasks, and its single-core scores indicate that lightly threaded work also runs faster. The mobile platform, low 15 W TDP, and active production status make it suitable for current laptop designs where power efficiency matters.

The Xeon E-2126G wins only in categories not covered by the shared benchmark set. It supports ECC memory, which the i5 does not, making it the only option here for systems that require error-correcting memory. Its 16 PCIe Gen 3 lanes exceed the i5's 8 Gen 4 lanes in total lane count, which could matter for expansion-heavy workstation builds. The Xeon also has a recorded memory bandwidth of 42.7 GB/s, a figure the i5 lacks in the database, so direct bandwidth comparison is not possible.

The Xeon's 80 W TDP versus the i5's 15 W TDP indicates a different power envelope, but the database does not provide efficiency metrics, so the thermal implications must be read from the TDP figures alone. The Xeon's Socket 1151 platform is a conventional desktop/workstation socket, while the i5's BGA 1744 is soldered, meaning the Xeon can be swapped in a compatible board while the i5 is fixed to its carrier.

Specification Differences

The table below lists only the fields where the two processors differ in the database.

| Field | Intel Core i5-1335UE | Intel Xeon E-2126G |

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

| Series | null | Xeon E-2100 series |

| Cores | 10 | 6 |

| Threads | 12 | 6 |

| Base clock | 1300.00 MHz | 3.30 GHz |

| Boost clock | 4.50 GHz | 4.50 GHz |

| TDP | 15 W | 80 W |

| Socket | Intel BGA 1744 | Intel Socket 1151 |

| Architecture | Raptor Lake | Coffee Lake |

| Codename | Raptor Lake-U | Coffee Lake-S WS |

| Generation | Core i5 (Raptor Lake-U) | Xeon E (Coffee Lake) |

| Process node | 10 nm | 14 nm |

| Die size | null | 154 mm² |

| L1 cache | 80 KB (per core) | 64 KB (per core) |

| L2 cache | 1.25 MB (per core) | 256 KB (per core) |

| Memory support | DDR4, DDR5 | DDR4 |

| Memory bandwidth | null | 42.7 GB/s |

| ECC memory | false | true |

| PCIe | Gen 4, 8 Lanes (CPU only) | Gen 3, 16 Lanes (CPU only) |

| Integrated graphics | Iris Xe Graphics 80EU | HD Graphics P630 |

| Market segment | Mobile | Server/Workstation |

| Production status | Active | End-of-life |

| Release date | 2023-01-03 | 2018-07-11 |

| Launch MSRP | null | $255 |

| Part number | null | SR3WU |

| Geekbench multicore | not recorded | 5743 |

| Geekbench single-core | not recorded | 1565 |

The shared boost clock of 4.50 GHz is the only performance-related specification that matches exactly. Everything else diverges, from core count and cache layout to platform and memory type. The L3 cache is identical at 12 MB shared, and both use dual-channel memory buses. Neither processor has an unlocked multiplier.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core i5-1335UE has 10 cores and 12 threads. The Intel Xeon E-2126G has 6 cores and 6 threads.

Q: How much faster is the i5-1335UE in Cinebench R23 multicore?

A: The i5-1335UE scores 10052, while the Xeon E-2126G scores 8891, giving the i5 a 13.1% lead.

Q: Does the Xeon E-2126G support ECC memory?

A: Yes, the Xeon E-2126G supports ECC memory. The i5-1335UE does not support ECC.

Q: What is the memory bandwidth of the Xeon E-2126G?

A: The Xeon E-2126G has a recorded memory bandwidth of 42.7 GB/s. The i5-1335UE has no memory bandwidth figure in the database.

Q: Which processor has a higher base clock?

A: The Xeon E-2126G has a base clock of 3.30 GHz, while the i5-1335UE has a base clock of 1300.00 MHz. Both have a boost clock of 4.50 GHz.

Q: What is the production status of each processor?

A: The i5-1335UE is marked Active, while the Xeon E-2126G is marked End-of-life.

The Verdict

The data points to a straightforward recommendation for most users. The Intel Core i5-1335UE is faster in every shared benchmark, with margins between 12.7% and 13.1% across all six Cinebench tests. It also has more cores, more threads, a newer architecture, a smaller process node, and support for both DDR4 and DDR5 memory. Its 15 W TDP makes it the lower-power option by a wide margin compared to the Xeon's 80 W. For mobile workloads, rendering tasks, or any application represented by the Cinebench suite, the i5-1335UE is the better performer.

The Intel Xeon E-2126G still has a role where its specific features matter. ECC memory support is exclusive to the Xeon, and its 16 PCIe Gen 3 lanes give it more expansion capacity than the i5's 8 Gen 4 lanes. The Socket 1151 platform allows for CPU replacement in compatible boards, unlike the soldered BGA 1744 of the i5. The Xeon also carries a launch MSRP of $255, though no price comparison is possible since the i5 has no recorded launch MSRP.

The production status difference is decisive for new designs. The i5-1335UE is Active, meaning it remains available for current products. The Xeon E-2126G is End-of-life, which limits its suitability for new builds. The percentile rankings are identical at 51, and the average benchmark scores are close (2907 versus 2842), but the head-to-head results consistently favor the i5. Buyers needing ECC or high lane counts should consider the Xeon; everyone else should follow the benchmark data and choose the i5-1335UE.