Intel Core i5-8300H vs Intel Xeon E3-1260L v5 Comparison

The Intel Xeon E3-1260L v5 and the Intel Core i5-8300H are both 4-core, 8-thread processors with the same 45 W TDP and a 3.90 GHz boost clock, but they are built for entirely different platforms. The Xeon is a server/workstation part from the Skylake generation, while the Core i5 is a mobile Coffee Lake chip. The recorded data shows that the Xeon holds a consistent performance edge across all Cinebench tests, with the outcome hinging on platform features and usage context rather than raw compute capability.

Head-to-Head Benchmarks

The Xeon E3-1260L v5 wins every recorded head-to-head benchmark against the Core i5-8300H. The margin is remarkably consistent, hovering just above 12% in all six comparisons. In Cinebench R15, the Xeon scores 707 in multicore against the i5's 629, a 12.4% lead, and in single-core it posts 99 versus 88, a 12.5% advantage. The pattern repeats in Cinebench R20, where the Xeon's multicore score of 2946 beats the i5's 2622 by 12.4%, and its single-core score of 415 beats 370 by 12.2%. Cinebench R23 shows the same story: the Xeon scores 7015 multicore and 990 single-core, against the i5's 6245 and 881, with deltas of 12.3% and 12.4%, respectively.

The consistency of the delta, always between 12.2% and 12.5%, suggests that the advantage is structural, not workload-specific. The Xeon's higher base clock of 2.90 GHz versus 2.30 GHz on the i5 contributes to this lead, especially in single-threaded tasks where boost clocks are identical at 3.90 GHz. In the average benchmark score, the Xeon sits at 2029, while the i5 trails at 2005, a modest gap of roughly 1.2% overall. Notably, the i5-8300H has additional Geekbench scores in the database, where it posts 3920 multicore and 1286 singlecore, but no equivalent Geekbench results exist for the Xeon, so these cannot be compared directly.

Both processors occupy the 45th percentile among all CPUs, indicating they are in the same performance tier despite the Xeon's lead in Cinebench. The Xeon's nearest rivals include the Intel Xeon E3-1280 v5 at an identical average score of 2029, the Xeon E3-1240 v5 at 2030 (a 0.1% difference), and the Intel Core i7-5775R at 2031 (also 0.1% behind). The i5-8300H's nearest rivals are the Intel Xeon D-1712TR at 2004 (0.1% behind), the Core i5-8400H at 2003 (0.1% behind), and the AMD Ryzen 7 2800H at 2002 (0.2% behind). This places both chips in similar company, though the Xeon edges out its counterpart by a small margin in the aggregate.

Architecture Differences

The two chips come from different Intel generations and target different sockets. The Xeon E3-1260L v5 uses the Skylake architecture, specifically Skylake-DT, and is built for the Intel Socket 1151. The Core i5-8300H uses the Coffee Lake architecture, specifically Coffee Lake-H, and is designed for the mobile BGA 1440 socket, meaning it is soldered to the motherboard. Both are fabricated on Intel's 14 nm process, but the die sizes differ: the Xeon measures 122 mm² with 1,750 million transistors, while the i5 is slightly larger at 126 mm².

Cache configurations are a key differentiator. Both have 64 KB of L1 and 256 KB of L2 per core, but the shared L3 cache differs significantly: the Xeon has 8 MB while the i5 has 12 MB. That extra 4 MB of L3 on the i5 is an architectural advantage for the mobile chip, yet it does not translate into a benchmark win in the recorded data. The Xeon supports both DDR3 and DDR4 memory in dual-channel mode with a recorded memory bandwidth of 34.1 GB/s. The i5 supports only DDR4, and its memory bus and bandwidth are not listed. The Xeon also supports ECC memory, which is a server/workstation feature, while the i5 does not.

The Xeon lists 16 PCIe Gen 3 lanes (CPU only), while the i5 has no PCIe lane count recorded. The i5 includes integrated UHD 630 graphics, whereas the Xeon has no integrated graphics listed. The Xeon has an unlocked multiplier set to false, as does the i5, so neither is overclockable. The Xeon was released in October 2015, while the i5 came later in April 2018. Both are marked as end-of-life in the database. The Xeon carries the part number SR2LH, and the i5 is SR3Z0.

Where Each One Wins

The Xeon E3-1260L v5 wins in every recorded benchmark category. It is ahead in Cinebench R15, R20, and R23 multicore and singlecore tests, with leads ranging from 12.2% to 12.5%. This makes it the stronger choice for any workload that relies on sustained CPU computation, such as rendering, compiling, or encoding, where the higher base clock and the benchmark results matter. The Xeon's support for ECC memory and its server/workstation market segment also make it a fit for reliability-focused tasks, though the benchmark data does not directly test these features.

The Core i5-8300H wins in areas not covered by the head-to-head tests, specifically in its Geekbench scores, which are not available for the Xeon. It also has a larger L3 cache (12 MB versus 8 MB), which could benefit workloads that repeatedly access a large working set, though the recorded benchmark scores do not reflect this advantage. The i5 includes integrated UHD 630 graphics, making it a more complete package for a mobile system without a discrete GPU, whereas the Xeon requires external graphics. The i5's mobile BGA 1440 socket means it is designed for laptops, where the Xeon does not fit.

For a builder choosing between the two, the Xeon is the stronger CPU in raw compute, as the data clearly shows. The i5's advantages lie in its platform features: integrated graphics, larger cache, and a mobile form factor that suits laptops. If the workload is purely CPU-bound and the platform is fixed, the Xeon is the better performer. If the system needs integrated graphics or the mobile form factor is required, the i5 is the only viable option, despite its lower benchmark scores.

FAQ

Q: Which CPU is faster in Cinebench R23?

A: The Intel Xeon E3-1260L v5 is faster. It scores 7015 in multicore and 990 in singlecore, while the Intel Core i5-8300H scores 6245 and 881, giving the Xeon a 12.3% lead in multicore and a 12.4% lead in singlecore.

Q: Do both CPUs have the same core and thread count?

A: Yes, both have 4 physical cores and 8 threads, as listed in the database. They also share the same 45 W TDP and a 3.90 GHz boost clock.

Q: Does the Core i5-8300H have any benchmark advantage over the Xeon?

A: The i5-8300H has recorded Geekbench scores (3920 multicore, 1286 singlecore) but there are no Geekbench results for the Xeon in the database to compare against. In the Cinebench tests, the Xeon wins all six comparisons.

Q: Is ECC memory support available on either CPU?

A: Yes, the Intel Xeon E3-1260L v5 supports ECC memory, while the Intel Core i5-8300H does not. This makes the Xeon a better fit for servers or workstations where error-correcting memory is required.

Q: What is the difference in L3 cache between the two?

A: The Xeon E3-1260L v5 has 8 MB of shared L3 cache, while the Core i5-8300H has 12 MB. Both have 2 KB (64 KB per core) of L1 and 256 KB per core of L2.

Q: Which CPU has integrated graphics?

A: The Core i5-8300H has integrated UHD 630 graphics. The Xeon E3-1260L v5 has no integrated graphics listed in the database, so a discrete GPU is required.

Specification Differences

The following specifications differ between the two CPUs, according to the database:

• Socket: Intel Socket 1151 (Xeon) versus Intel BGA 1440 (Core i5)
• Architecture: Skylake (Skylake-DT) versus Coffee Lake (Coffee Lake-H)
• Base Clock: 2.90 GHz versus 2.30 GHz
• Transistors: 1,750 million versus not recorded (null)
• Die Size: 122 mm² versus 126 mm²
• L3 Cache: 8 MB shared versus 12 MB shared
• Memory Support: DDR3, DDR4 versus DDR4 only
• Memory Bus: Dual-channel versus not recorded
• Memory Bandwidth: 34.1 GB/s versus not recorded
• ECC Memory: Yes versus No
• PCIe: Gen 3, 16 Lanes (CPU only) versus not recorded
• Integrated Graphics: None versus UHD 630
• Market Segment: Server/Workstation versus Mobile
• Release Date: 2015-10-18 versus 2018-04-01
• Launch MSRP: $294 versus not recorded
• Part Number: SR2LH versus SR3Z0

The Verdict

The Intel Xeon E3-1260L v5 is the clear performance winner in every recorded head-to-head test. The data shows a 12.4% lead in multicore and 12.5% in singlecore in Cinebench R15, and similar margins in R20 and R23. For anyone running CPU-intensive workloads and choosing between these two chips, the Xeon is the right pick. It also adds ECC support and a lower base clock advantage, making it a more capable server or workstation part, despite being older and end-of-life.

The Intel Core i5-8300H is the right pick only if the platform or integrated graphics matter more than raw compute. Its mobile BGA socket and UHD 630 graphics make it a laptop-only choice, and its larger 12 MB L3 cache is a potential advantage for specific workloads, but the benchmark data does not show that advantage in practice. The i5's average score of 2005 is lower than the Xeon's 2029, and it loses all six Cinebench comparisons. If you are building a desktop or a socket-based system and need the fastest CPU for multithreaded tasks, the Xeon E3-1260L v5 wins outright. If you are constrained to a mobile laptop platform and need integrated graphics, the i5-8300H is the only option, but be prepared to sacrifice about 12% of CPU performance.