Intel Core i5-8350U vs Intel Core i9-13900E Comparison

# FAQ

Q: Which processor has the higher average benchmark score?

A: The Intel Core i5-8350U posts an average benchmark score of 8998, while the Intel Core i9-13900E averages 8676. The i5-8350U is 0.6% ahead of its nearest rival, the Core i5-1135G7, while the i9-13900E is 0.1% ahead of the Core i7-8565U.

Q: How do the two chips compare in Cinebench R23 multi-core performance?

A: The i9-13900E scores 34244 in Cinebench R23 multi-core, while the i5-8350U scores 5173. The i9-13900E leads by 84.9% in this test, which is the largest delta across all head-to-head benchmarks.

Q: What is the difference in single-core Cinebench R23 scores?

A: The i9-13900E achieves 4834 in Cinebench R23 single-core, versus 730 for the i5-8350U. The i9-13900E wins by 84.9%, matching the multi-core margin exactly.

Q: Which processor has more cores and threads?

A: The i9-13900E has 24 cores and 32 threads, compared to 4 cores and 8 threads on the i5-8350U. The i9-13900E also features a larger 36 MB shared L3 cache versus 6 MB on the i5-8350U.

Q: Do both processors use the same memory type?

A: No. The i5-8350U supports only DDR4 memory, while the i9-13900E supports both DDR4 and DDR5. The i9-13900E also has a dual-channel memory bus and ECC memory support, which the i5-8350U lacks.

Q: What are the integrated graphics options?

A: The i5-8350U integrates UHD 620 graphics, while the i9-13900E integrates UHD Graphics 770. Both are Intel integrated solutions, but they belong to different generations and performance tiers.

# The Verdict

The data is unambiguous: the Intel Core i9-13900E wins every single head-to-head benchmark against the Intel Core i5-8350U. Across six Cinebench tests (R15, R20, R23 — both single and multi-core), the i9-13900E leads by a consistent 84.9% margin in every instance. The i5-8350U records zero wins in the head-to-head comparison, while the i9-13900E takes all six.

For anyone choosing between these two, the decision hinges entirely on use case and platform. The i9-13900E is a desktop processor with 24 cores, 32 threads, a 5.20 GHz boost clock, and support for DDR5 memory plus ECC. It is designed for heavy multi-threaded workloads, content creation, and professional applications where raw compute throughput is paramount. The i5-8350U, by contrast, is a 15 W mobile chip with 4 cores and 8 threads, built for ultrabooks and lightweight laptops where power efficiency and portability matter more than peak performance.

The i5-8350U does hold a statistical edge in average benchmark score (8998 vs 8676), but this is misleading. That average likely reflects a broader set of workloads, including single-threaded integer and floating-point tests where the mobile chip's lower power envelope doesn't penalize it as heavily. In every Cinebench rendering test — which is the most direct measure of sustained compute capability — the i9-13900E dominates.

Pick the i9-13900E if you need maximum multi-core performance, support for ECC memory, or the flexibility of DDR4/DDR5. Pick the i5-8350U if you are constrained by a mobile form factor and prioritize battery life and low heat output over raw speed. The benchmark data does not support any other conclusion: this is a 6-0 sweep.

# Head-to-Head Benchmarks

The head-to-head results are remarkably consistent. In Cinebench R15 multi-core, the i9-13900E scores 3451 against 521 for the i5-8350U, a delta of 84.9%. Single-core R15 tells the same story: 487 vs 73, also 84.9% apart. Moving to R20, the i9-13900E delivers 14382 multi-core and 2030 single-core, while the i5-8350U manages 2172 and 306 respectively. Again, the margin is 84.9% in both cases.

The pattern holds for R23. The i9-13900E posts 34244 multi-core and 4834 single-core, compared to 5173 and 730 for the i5-8350U. The delta remains fixed at 84.9%. This uniformity across all six tests suggests a fundamental architectural advantage rather than a workload-specific quirk — the i9-13900E simply executes more instructions per clock and has far more parallel resources.

The biggest raw score gap appears in R23 multi-core, where the i9-13900E out-scores the i5-8350U by 29071 points. In percentage terms, however, every test is identical. The i5-8350U's best relative showing is in PassMark single-thread tests, where it scores 1996 — but the head-to-head table does not include PassMark results, so no direct comparison is available from that data.

Notably, the i5-8350U has no wins in the head-to-head set. Its nearest rivals in the overall database include the Core i5-1135G7 (0.6% behind) and Xeon Gold 6330 (0.7% behind), indicating it sits in a competitive mobile mid-range tier. The i9-13900E's nearest rivals include the Core i7-8565U (0.1% behind) and Core i5-8365U (0.4% ahead), which suggests its average score is dragged down by the absence of PassMark results in its benchmark suite.

# Specification Differences

The two processors differ on nearly every core specification. Core count: 4 vs 24. Threads: 8 vs 32. Base clock: 1700 MHz vs 1800 MHz. Boost clock: 3.60 GHz vs 5.20 GHz. Thermal design power: 15 W vs 65 W. Socket: Intel BGA 1356 vs Intel Socket 1700. Process node: 14 nm vs 10 nm. Die size: 123 mm² vs 257 mm².

Cache hierarchies diverge as well. The i5-8350U has 64 KB L1 per core, 256 KB L2 per core, and 6 MB shared L3. The i9-13900E has 80 KB L1 per core, 2 MB L2 per core, and 36 MB shared L3. The i9-13900E's L3 cache is six times larger, which directly benefits multi-threaded workloads that repeatedly access shared data.

Memory support is another major split. The i5-8350U supports DDR4 only, with no ECC. The i9-13900E supports DDR4 and DDR5, includes a dual-channel memory bus, and adds ECC memory support. The i5-8350U has no listed PCIe specification, while the i9-13900E features PCIe Gen 5 with 16 lanes (CPU only).

Integrated graphics differ: UHD 620 vs UHD Graphics 770. Market segment: Mobile vs Desktop. Release dates: 2017-08-20 vs 2023-01-03. Part numbers: SR3L9 vs SRMG2. Neither processor has a launch MSRP listed, and neither has an unlocked multiplier.

# Architecture Differences

The architectural gap is generational. The i5-8350U is built on Kaby Lake, specifically the Kaby Lake-R refresh, using a 14 nm process from Intel. It belongs to the Core i5 (Kaby Lake-U Refresh) generation and targets mobile devices with a 15 W TDP. The i9-13900E is Raptor Lake, specifically Raptor Lake-S, on Intel's 10 nm process, and belongs to the Core i9 (Raptor Lake) generation with a 65 W desktop TDP.

The core count difference (4 vs 24) reflects a fundamental design philosophy shift. The i5-8350U is a quad-core with Hyper-Threading (8 threads), optimized for power-constrained laptops. The i9-13900E is a 24-core, 32-thread monster designed for desktop compute density. Its L1 cache grows to 80 KB per core, L2 to 2 MB per core, and L3 to 36 MB shared — all substantially larger than the i5-8350U's 64 KB, 256 KB, and 6 MB allocations.

Process technology also differs: 14 nm vs 10 nm. The i9-13900E's die is more than twice as large (257 mm² vs 123 mm²), which accommodates the additional cores, cache, and integrated UHD Graphics 770. The i5-8350U's integrated graphics are UHD 620, an older generation. The i9-13900E also supports PCIe Gen 5, a feature absent from the i5-8350U's specification sheet.

Memory architecture is a notable distinguisher. The i5-8350U supports only DDR4, while the i9-13900E supports both DDR4 and DDR5, with a dual-channel memory bus and ECC capability. This makes the i9-13900E suitable for workstation and server-adjacent workloads where data integrity is critical. The i5-8350U has no such provisions.

# Where Each One Wins

Intel Core i9-13900E — All compute-heavy scenarios. Every Cinebench test (R15, R20, R23, both single and multi-core) goes to the i9-13900E by 84.9%. This includes rendering, simulation, video encoding, and any workload that scales with core count. The 24-core/32-thread configuration with 36 MB L3 cache and 5.20 GHz boost clock makes it the clear choice for desktop workstations, content creation rigs, and professional applications that can utilize parallel threads. ECC memory support and PCIe Gen 5 further position it for reliability-critical and high-bandwidth tasks.

Intel Core i5-8350U — Mobile efficiency and portability. The i5-8350U's 15 W TDP, compact 123 mm² die, and BGA 1356 socket target thin-and-light laptops. While it loses all six head-to-head benchmarks, its average benchmark score of 8998 actually exceeds the i9-13900E's 8676. This suggests the i5-8350U performs relatively better across a broader set of workloads, including PassMark integer math (22244), floating-point math (13422), and data compression (79781). For users who need a capable laptop processor for everyday productivity, web browsing, and office tasks, the i5-8350U's power efficiency is a meaningful advantage.

The benchmark data does not support a middle ground. There is no workload in the head-to-head table where the i5-8350U wins. The i9-13900E is categorically faster in rendering. The only context where the i5-8350U appears competitive is the aggregate average score, which reflects its inclusion of PassMark tests that the i9-13900E lacks. If your application is Cinebench-class compute, the i9-13900E is the only rational choice. If you need a low-power mobile processor, the i5-8350U remains a viable option — but not because it outruns the i9-13900E in any direct comparison.