Intel Core i5-8300H vs Intel Xeon E3-1280 v5 Comparison

The Verdict

The Intel Xeon E3-1280 v5 is the clear performance winner in this matchup, taking all six head-to-head benchmark comparisons against the Intel Core i5-8300H. The data shows a consistent 12.2% to 12.5% advantage across every Cinebench test, with no single metric favoring the mobile Core i5. If the priority is raw compute throughput, the Xeon E3-1280 v5 is the chip to choose.

The Intel Core i5-8300H, however, is not without its own logic. It is a 45W mobile processor with integrated UHD 630 graphics, while the Xeon E3-1280 v5 is an 80W server/workstation part with no integrated GPU. For a laptop or compact mobile system where power draw and graphics output matter, the i5-8300H serves a different role. The benchmark results indicate the Xeon wins on speed, but the i5-8300H wins on integration and portability.

Both processors sit at the 45th percentile among all CPUs in the database, meaning they occupy a similar tier of overall capability despite the Xeon's consistent lead in the recorded Cinebench tests. The Xeon's average benchmark score is 2029, while the i5-8300H scores 2005, a narrow 1.2% gap in aggregate. This suggests that outside of the Cinebench suite, the two chips are closer than the head-to-head deltas imply.

The verdict is straightforward: choose the Xeon E3-1280 v5 for maximum compute performance in a desktop or workstation context, and choose the Core i5-8300H for mobile deployments where its integrated graphics and lower power envelope are essential.

Where Each One Wins

The Xeon E3-1280 v5 wins every recorded benchmark, so the use-case split is not about performance dominance but about system context. The Xeon's wins are uniform across multicore and singlecore tests, with deltas ranging from 12.2% to 12.5%. This makes it the stronger choice for CPU-bound workloads such as rendering, compilation, and server-side processing, where the extra performance directly translates to shorter completion times.

The Core i5-8300H wins in the domain of mobility and integration. It is a mobile processor with a 45W TDP, meaning it is designed for laptops and portable workstations where the Xeon's 80W TDP is impractical. The i5-8300H also includes integrated UHD 630 graphics, which the Xeon lacks entirely. This makes the i5-8300H a self-contained solution for systems that do not want a discrete GPU.

The Xeon E3-1280 v5 supports ECC memory, a feature absent on the i5-8300H. This is a significant differentiator for reliability-critical workloads such as database servers, financial applications, and scientific computing, where memory errors are unacceptable. The i5-8300H, without ECC support, is better suited for consumer and general-purpose mobile computing.

The socket difference further reinforces the split: the Xeon uses Intel Socket 1151, a desktop/entry-server platform, while the i5-8300H uses Intel BGA 1440, a soldered mobile package. These are not interchangeable, so the platform decision largely dictates which chip is viable.

Architecture Differences

The Xeon E3-1280 v5 is built on Skylake-DT architecture, while the Core i5-8300H uses Coffee Lake-H. Both are fabricated on Intel's 14 nm process, but they are distinct generations with different design priorities. The Xeon is a server/workstation part from 2015, and the i5-8300H is a mobile processor from 2018.

Both chips feature 4 cores and 8 threads, so the thread count is identical. The Xeon has a base clock of 3.70 GHz and a boost clock of 4.00 GHz, while the i5-8300H runs at 2.30 GHz base and 3.90 GHz boost. The Xeon's higher clocks explain its consistent benchmark lead, as both chips share the same core and thread configuration.

Cache configuration differs notably. The Xeon has 8 MB of shared L3 cache, while the i5-8300H has 12 MB of shared L3 cache. Despite having 50% more L3 cache, the i5-8300H still trails in every benchmark, indicating that the Xeon's clock speed advantage outweighs the cache deficit in these workloads.

The Xeon's die size is 122 mm² with 1,750 million transistors, while the i5-8300H has a slightly larger die at 126 mm² and no transistor count recorded. The memory support is DDR4 for both, with the Xeon using dual-channel memory and ECC support, while the i5-8300H's memory bus is not recorded and ECC is not supported.

The Xeon has PCIe Gen 3 with 16 lanes from the CPU, while the i5-8300H has no PCIe lane data recorded. The i5-8300H includes integrated UHD 630 graphics, while the Xeon has no integrated graphics at all. The Xeon is an end-of-life server/workstation part with a launch MSRP of $612, while the i5-8300H is an end-of-life mobile chip with no launch MSRP recorded.

FAQ

Q: Which CPU has the higher single-core performance?

A: The Xeon E3-1280 v5 leads in single-core tests, with scores of 99 in Cinebench R15, 415 in R20, and 990 in R23, compared to the i5-8300H's 88, 370, and 881 respectively. The delta is 12.5% in R15, 12.2% in R20, and 12.4% in R23.

Q: Does the i5-8300H have integrated graphics?

A: Yes, the i5-8300H includes Intel UHD 630 integrated graphics. The Xeon E3-1280 v5 has no integrated graphics, requiring a discrete GPU for display output.

Q: Which CPU supports ECC memory?

A: The Xeon E3-1280 v5 supports ECC memory. The i5-8300H does not support ECC, making the Xeon the choice for reliability-critical applications.

Q: Are these CPUs interchangeable in the same motherboard?

A: No. The Xeon E3-1280 v5 uses Intel Socket 1151, while the i5-8300H uses Intel BGA 1440, a soldered mobile package. They are incompatible with each other's platforms.

Q: How do their average benchmark scores compare?

A: The Xeon E3-1280 v5 has an average benchmark score of 2029, while the i5-8300H scores 2005. The Xeon is 1.2% higher in aggregate, though its head-to-head Cinebench lead is much larger at around 12%.

Q: Which CPU has more L3 cache?

A: The i5-8300H has 12 MB of shared L3 cache, while the Xeon E3-1280 v5 has 8 MB. Despite this, the Xeon wins all benchmark comparisons, indicating clock speed is the dominant factor.

Head-to-Head Benchmarks

The Xeon E3-1280 v5 wins all six recorded head-to-head comparisons, with every delta falling in a narrow band between 12.2% and 12.5%. This consistency suggests a fundamental clock speed advantage rather than workload-specific behavior.

In Cinebench R15 multicore, the Xeon scores 707 against the i5-8300H's 629, a 12.4% lead. The singlecore R15 test shows 99 versus 88, a 12.5% advantage, which is the largest delta in the entire comparison. This indicates the Xeon's 4.00 GHz boost clock delivers more single-thread throughput than the i5-8300H's 3.90 GHz.

Cinebench R20 multicore results are 2946 for the Xeon and 2622 for the i5-8300H, a 12.4% difference. The singlecore R20 test shows 415 versus 370, a 12.2% lead, the smallest delta recorded. Cinebench R23 multicore follows the same pattern: 7015 against 6245, a 12.3% gap, while singlecore R23 is 990 versus 881, another 12.4% advantage.

The i5-8300H has additional Geekbench scores in its profile, with 3920 multicore and 1286 singlecore, but the Xeon has no Geekbench results recorded, so no direct comparison is possible for that suite. The wins tally is decisive: the Xeon wins all 6 head-to-head tests, while the i5-8300H wins none.

The narrow delta range across all tests is notable. Whether the workload is multicore rendering or singlecore responsiveness, the Xeon's advantage remains virtually constant. This is typical of two chips with identical core and thread counts where the only meaningful difference in these workloads is clock speed.

Specification Differences

| Specification | Intel Xeon E3-1280 v5 | Intel Core i5-8300H |

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

| Architecture | Skylake | Coffee Lake |

| Codename | Skylake-DT | Coffee Lake-H |

| Generation | Xeon E3 (Skylake-DT) | Core i5 (Coffee Lake-H) |

| Base Clock | 3.70 GHz | 2.30 GHz |

| Boost Clock | 4.00 GHz | 3.90 GHz |

| TDP | 80W | 45W |

| Socket | Intel Socket 1151 | Intel BGA 1440 |

| Process Node | 14 nm | 14 nm |

| Transistors | 1,750 million | Not recorded |

| Die Size | 122 mm² | 126 mm² |

| L3 Cache | 8 MB (shared) | 12 MB (shared) |

| Memory Bus | Dual-channel | Not recorded |

| ECC Memory | Yes | No |

| PCIe | Gen 3, 16 Lanes (CPU only) | Not recorded |

| Integrated Graphics | None | UHD 630 |

| Market Segment | Server/Workstation | Mobile |

| Release Date | 2015-10-18 | 2018-04-01 |

| Launch MSRP | $612 | Not recorded |

| Part Number | SR2LC | SR3Z0 |

Both processors share the same core count of 4, thread count of 8, L1 cache of 64 KB per core, L2 cache of 256 KB per core, DDR4 memory support, 14 nm process node, Intel foundry, and locked multiplier. The differences lie in clock speeds, TDP, socket, cache size, ECC support, integrated graphics, and market segment. The Xeon is a higher-clocked, higher-power server part with ECC support but no graphics, while the i5-8300H is a lower-power mobile chip with integrated graphics but no ECC.