Intel Core i5-1145GRE vs Intel Xeon E-2276M Comparison

Head-to-Head Benchmarks

The benchmark data is unambiguous: the Intel Core i5-1145GRE wins every single head-to-head test against the Intel Xeon E-2276M, and it does so by a remarkably consistent margin. Across all six Cinebench comparisons, the i5-1145GRE posts a delta of roughly 29.4% to 30.3% over the Xeon. That is not a narrow edge; it is a decisive, repeatable pattern that holds in both single-threaded and multi-threaded workloads.

Starting with multi-core performance, the i5-1145GRE scores 705 in Cinebench R15 multicore versus 544 for the Xeon E-2276M, a 29.6% advantage. In Cinebench R20 multicore, the i5-1145GRE reaches 2940 against 2268 for the Xeon, again a 29.6% lead. The pattern continues in Cinebench R23 multicore, where the i5-1145GRE scores 7001 and the Xeon trails at 5400, another 29.6% gap. What makes this striking is that the Xeon has more cores and threads, yet the i5-1145GRE still outpaces it substantially in multi-threaded rendering tasks.

Single-core results tell the same story, only slightly more emphatic. In Cinebench R15 singlecore, the i5-1145GRE manages 99 points to the Xeon's 76, a 30.3% advantage. Cinebench R20 singlecore shows 414 versus 320, a 29.4% gap. Cinebench R23 singlecore rounds out the sweep with 988 against 762, a 29.7% lead. The consistency of these deltas, all clustered between 29.4% and 30.3%, suggests the performance difference is architectural rather than workload-specific. The i5-1145GRE is simply faster per clock, and it maintains that edge regardless of thread count.

It is importantly the Xeon E-2276M does have a Geekbench entry in the database, scoring 5159 multicore and 1440 singlecore, but the i5-1145GRE has no corresponding Geekbench result in the recorded data. The only direct comparisons available are the Cinebench series, and the i5-1145GRE wins all six. The database records 6 wins for the i5-1145GRE and 0 for the Xeon. There is no test in the head-to-head set where the Xeon pulls ahead.

Architecture Differences

The two processors come from fundamentally different Intel design eras. The Core i5-1145GRE is built on Tiger Lake, specifically the Tiger Lake-U codename, using a 10 nm process node with a die size of 144 mm². Its generation is listed as Core i5 (Willow Cove-U). The Xeon E-2276M, by contrast, belongs to the Coffee Lake generation, codename Coffee Lake-H, on a 14 nm process with a slightly larger die at 154 mm². The process shrink alone explains much of the performance disparity: newer transistor geometry typically delivers better efficiency and higher instructions per clock.

Core configuration differs sharply. The i5-1145GRE packs 4 cores and 8 threads, while the Xeon E-2276M offers 6 cores and 12 threads. Despite having two fewer physical cores and four fewer threads, the i5-1145GRE still wins every multi-core benchmark. That indicates the Tiger Lake cores are dramatically more efficient per thread than the older Coffee Lake design. The Xeon's extra cores cannot compensate for the per-core performance gap.

Cache hierarchies also diverge. The i5-1145GRE allocates 80 KB of L1 cache per core and 1.25 MB of L2 per core, with 8 MB of shared L3 cache. The Xeon E-2276M uses 64 KB of L1 per core, 256 KB of L2 per core, and a larger 12 MB of shared L3. So the Xeon has more total L3, but the i5-1145GRE has significantly more L2 per core, which can reduce latency for frequently accessed data. The smaller L3 on the i5-1145GRE is offset by its faster clock speeds and newer architecture.

Clock speeds tell a complementary story. The i5-1145GRE has a base clock of 1500 MHz and a boost clock of 4100 MHz. The Xeon E-2276M runs at a base of 2800 MHz and boosts to 4700 MHz. The Xeon has a higher ceiling, but the i5-1145GRE still wins single-core tests by roughly 30%, which again points to architectural superiority rather than raw frequency. The Tiger Lake core simply does more work per cycle.

Memory support differs as well. The i5-1145GRE supports DDR4 and LPDDR4X, while the Xeon E-2276M supports only DDR4. Both use dual-channel memory buses. The Xeon lists a memory bandwidth of 42.7 GB/s; the i5-1145GRE has no recorded bandwidth figure in the database. PCIe connectivity also differs: the i5-1145GRE provides Gen 4 with 4 CPU lanes, while the Xeon offers Gen 3 with 16 CPU lanes. The i5-1145GRE's newer PCIe standard offers higher per-lane bandwidth, but the Xeon has more total lanes.

Integrated graphics are another divide. The i5-1145GRE ships with Iris Xe Graphics G7 80EU, a modern GPU architecture. The Xeon E-2276M uses the older UHD Graphics P630. Both support ECC memory, which is notable for a mobile Core chip.

The Verdict

The data points to a clear conclusion: the Intel Core i5-1145GRE is the faster processor in every measured workload. It wins all six head-to-head Cinebench tests with a consistent 29.4% to 30.3% margin, despite having fewer cores and a lower boost clock than the Xeon E-2276M. For tasks that rely on Cinebench-style rendering, the i5-1145GRE is the stronger choice.

The Xeon E-2276M does have advantages in the specification sheet. It offers 6 cores and 12 threads versus 4 and 8, a larger 12 MB L3 cache, a higher boost clock of 4700 MHz, 16 PCIe Gen 3 lanes, and a higher base clock of 2800 MHz. It also carries a 45 W TDP compared to the i5-1145GRE's 28 W, which means it consumes more power but is positioned for workstation-class workloads. The Xeon's market segment is listed as Server/Workstation, whereas the i5-1145GRE is classified as Mobile.

However, the benchmark results override the core-count advantage. The i5-1145GRE's Tiger Lake architecture delivers such a large per-core performance uplift that the Xeon's additional cores cannot overcome it. In the database, the i5-1145GRE sits at the 45th percentile among all CPUs, while the Xeon E-2276M is at the 44th percentile. Their average benchmark scores are close, 2025 for the i5-1145GRE and 1996 for the Xeon, but the head-to-head results are not close at all.

For buyers choosing between these two, the decision hinges on workload. If the priority is raw Cinebench rendering performance, the i5-1145GRE is the pick. If the priority is core count, PCIe lane count, or a workstation-class feature set, the Xeon E-2276M has the spec-sheet edge, but it will be slower in the tested benchmarks. The i5-1145GRE is also the newer part, released in September 2020, while the Xeon dates to May 2019 and is listed as end-of-life. The production status of the i5-1145GRE is active, which suggests ongoing availability.

Specification Differences

The two processors differ across nearly every major specification category. Core count: the i5-1145GRE has 4 cores, the Xeon E-2276M has 6. Threads: 8 versus 12. Base clock: 1500 MHz against 2800 MHz. Boost clock: 4100 MHz versus 4700 MHz. TDP: 28 W versus 45 W. Socket: the i5-1145GRE uses Intel BGA 1449, the Xeon uses Intel BGA 1440. Architecture: Tiger Lake versus Coffee Lake. Process node: 10 nm versus 14 nm. Die size: 144 mm² versus 154 mm².

Cache layouts differ as well. The i5-1145GRE has 80 KB L1 per core, 1.25 MB L2 per core, and 8 MB shared L3. The Xeon E-2276M has 64 KB L1 per core, 256 KB L2 per core, and 12 MB shared L3. Memory support: the i5-1145GRE accepts DDR4 and LPDDR4X, the Xeon accepts only DDR4. Memory bandwidth: the Xeon lists 42.7 GB/s, the i5-1145GRE has no recorded figure. PCIe: the i5-1145GRE offers Gen 4 with 4 lanes, the Xeon offers Gen 3 with 16 lanes.

Integrated graphics: the i5-1145GRE has Iris Xe Graphics G7 80EU, the Xeon has UHD Graphics P630. Market segment: Mobile for the i5-1145GRE, Server/Workstation for the Xeon. Production status: Active versus End-of-life. Release date: September 2020 versus May 2019. Part numbers: SRK10 for the i5-1145GRE, SRFCK for the Xeon. Both support ECC memory, and neither has an unlocked multiplier.

FAQ

Q: Which processor wins the most head-to-head benchmarks?

A: The Intel Core i5-1145GRE wins all 6 head-to-head tests recorded in the database. The Intel Xeon E-2276M wins 0.

Q: What is the largest performance gap between the two?

A: The largest delta is 30.3%, seen in Cinebench R15 singlecore, where the i5-1145GRE scores 99 and the Xeon E-2276M scores 76.

Q: How does the i5-1145GRE win multi-core tests despite having fewer cores?

A: The i5-1145GRE has 4 cores and 8 threads, while the Xeon E-2276M has 6 cores and 12 threads. Despite this, the i5-1145GRE scores 7001 in Cinebench R23 multicore versus 5400 for the Xeon, a 29.6% lead, indicating much higher per-core efficiency.

Q: What are the TDP ratings for each processor?

A: The i5-1145GRE has a TDP of 28 W. The Xeon E-2276M has a TDP of 45 W.

Q: Which processor supports more PCIe lanes?

A: The Xeon E-2276M supports 16 PCIe Gen 3 lanes (CPU only). The i5-1145GRE supports 4 PCIe Gen 4 lanes (CPU only).

Q: Are both processors still in production?

A: No. The i5-1145GRE is listed as Active, while the Xeon E-2276M is listed as End-of-life.