Intel Core i7-8650U vs Intel Core i9-13900E Comparison

FAQ

Q: Which processor has the higher core and thread count?

A: The Intel Core i9-13900E has 24 cores and 32 threads, whereas the Intel Core i7-8650U has 4 cores and 8 threads. This is a six-fold difference in core count and a four-fold difference in thread count.

Q: How do their boost clock speeds compare?

A: The Intel Core i9-13900E boosts to 5.20 GHz, while the Intel Core i7-8650U boosts to 4.20 GHz. The i9-13900E holds a 1.00 GHz advantage in maximum single-core frequency.

Q: What are the integrated graphics solutions on each chip?

A: The Intel Core i7-8650U includes UHD 620 graphics, while the Intel Core i9-13900E features UHD Graphics 770. The i9-13900E’s integrated graphics are from a newer generation and are paired with a desktop platform.

Q: Which processor supports ECC memory?

A: The Intel Core i9-13900E supports ECC memory, while the Intel Core i7-8650U does not. This makes the i9-13900E more suitable for workstation or server-type workloads where data integrity is critical.

Q: What is the difference in their TDP ratings?

A: The Intel Core i7-8650U has a TDP of 15 watts, while the Intel Core i9-13900E has a TDP of 65 watts. The i9-13900E consumes over four times the power budget, which aligns with its much larger core configuration.

Q: Which processor has a higher average benchmark score?

A: The Intel Core i7-8650U has an average benchmark score of 8932, while the Intel Core i9-13900E has an average score of 8676. Despite being far slower in raw performance tests, the i7-8650U edges out the i9-13900E in this aggregate metric due to the specific benchmark mix.

Architecture Differences

The two processors belong to entirely different architectural eras and market segments. The Intel Core i7-8650U is built on Kaby Lake-R, a 14 nm process from Intel, with a die size of 123 mm². It is a mobile-focused chip designed for thin-and-light laptops, using the Intel BGA 1356 socket. The Intel Core i9-13900E, by contrast, is a Raptor Lake-S desktop part manufactured on a 10 nm process with a die size of 257 mm², using the Intel Socket 1700.

The core layouts are fundamentally different. The i7-8650U has 4 cores and 8 threads, all based on the same Kaby Lake architecture. The i9-13900E has 24 cores and 32 threads, which reflects a hybrid design typical of Raptor Lake-S (performance and efficiency cores), though the FACT PACK does not break down the specific hybrid composition. Cache hierarchies also diverge sharply: the i7-8650U has 64 KB of L1 per core, 256 KB of L2 per core, and 8 MB of shared L3 cache. The i9-13900E has 80 KB of L1 per core, 2 MB of L2 per core, and 36 MB of shared L3 cache. The L3 cache alone is 4.5 times larger on the i9-13900E.

Memory support differs as well. The i7-8650U supports only DDR4, while the i9-13900E supports both DDR4 and DDR5 with a dual-channel memory bus. The i9-13900E also adds ECC memory support, which the mobile chip lacks. PCIe capabilities are only listed for the i9-13900E, which includes Gen 5 with 16 lanes from the CPU. The integrated graphics differ: UHD 620 on the i7-8650U versus UHD Graphics 770 on the i9-13900E. Production status for both is listed as Active, but the release dates are separated by over five years (August 2017 versus January 2023).

Head-to-Head Benchmarks

The benchmark data shows a complete and decisive sweep for the Intel Core i9-13900E across all six head-to-head tests. The i7-8650U wins zero tests, while the i9-13900E wins all six. The deltas are remarkably consistent, hovering around -84.7% to -84.8% from the perspective of the i7-8650U.

In Cinebench R15 multicore, the i9-13900E scores 3451 versus 529 for the i7-8650U, a delta of -84.7%. The single-core R15 test shows a similar gap: 487 versus 74, a delta of -84.8%. Moving to Cinebench R20, the multicore result is 14382 versus 2206 (-84.7%), and the single-core result is 2030 versus 311 (-84.7%). The trend continues in Cinebench R23, where the i9-13900E posts 34244 multicore against 5253 for the i7-8650U (-84.7%), and 4834 single-core against 741 (-84.7%).

What this means in practical terms: the i9-13900E is roughly 6.5 times faster in every measured Cinebench workload. The consistency of the delta across both single-core and multi-core tests is striking. It indicates that the i9-13900E’s advantage is not just from having more cores, but also from a substantially higher per-core performance. The i7-8650U’s boost clock of 4.20 GHz is respectable for its era, but the i9-13900E’s 5.20 GHz boost, combined with a newer architecture, yields a per-core improvement that shows up even in single-threaded tests.

Specification Differences

The following fields differ between the two processors:

• Cores: 4 (i7-8650U) vs 24 (i9-13900E)
• Threads: 8 vs 32
• Base clock: 1900.00 MHz vs 1800.00 MHz
• Boost clock: 4.20 GHz vs 5.20 GHz
• TDP: 15 W vs 65 W
• Socket: Intel BGA 1356 vs Intel Socket 1700
• Architecture: Kaby Lake vs Raptor Lake
• Codename: Kaby Lake-R vs Raptor Lake-S
• Generation: Core i7 (Kaby Lake-U Refresh) vs Core i9 (Raptor Lake)
• Process node: 14 nm vs 10 nm
• Die size: 123 mm² vs 257 mm²
• L1 cache: 64 KB per core vs 80 KB per core
• L2 cache: 256 KB per core vs 2 MB per core
• L3 cache: 8 MB shared vs 36 MB shared
• Memory support: DDR4 only vs DDR4 and DDR5
• Memory bus: Not listed vs Dual-channel
• ECC memory: false vs true
• PCIe: Not listed vs Gen 5, 16 Lanes (CPU only)
• Integrated graphics: UHD 620 vs UHD Graphics 770
• Market segment: Mobile vs Desktop
• Release date: 2017-08-20 vs 2023-01-03
• Part number: SR3L8 vs SRMG2

The base clock is one of the few areas where the i7-8650U is higher (1900 MHz vs 1800 MHz), but this is irrelevant in practice given the massive boost clock and core count differences. Neither part has a listed launch MSRP, and neither has an unlocked multiplier.

Where Each One Wins

The Intel Core i9-13900E wins in every single benchmark category that has direct head-to-head data. It is categorically faster in Cinebench R15, R20, and R23, both single-core and multicore. The i9-13900E also wins on every architectural metric that matters for sustained performance: more cores, more threads, larger caches, faster boost clock, newer process node, and support for both DDR4 and DDR5 memory. The ECC memory support and Gen 5 PCIe lanes make it suitable for professional workstations, content creation, and multi-threaded rendering workloads.

The Intel Core i7-8650U, however, has a few advantages that are not captured in the raw performance benchmarks. Its 15 W TDP makes it far more power-efficient in absolute terms, which is expected for a mobile chip. It is also built for the BGA 1356 socket, meaning it is designed for integration into laptops, where the i9-13900E’s desktop socket and 65 W TDP would be impractical. The i7-8650U also has a higher average benchmark score (8932) than the i9-13900E (8676), which is an artifact of the specific benchmark suite — the i7-8650U has PassMark scores for tasks like data compression (78936), integer math (22007), and floating-point math (13299), while the i9-13900E only has Cinebench and Geekbench results in the FACT PACK. This makes the average score comparison misleading for overall performance, but it does show that the i7-8650U has a broader set of measured workloads, including some where its efficiency-centric design performs relatively better.

The Verdict

The data is unambiguous: the Intel Core i9-13900E is the vastly superior processor in all measured performance tests. It delivers a 6.5x improvement in Cinebench multicore scores and a similar margin in single-core tests. Anyone prioritizing raw compute, multi-threaded workloads, or future-proofing with DDR5 and PCIe Gen 5 should choose the i9-13900E without hesitation.

The Intel Core i7-8650U remains relevant only for a narrow set of use cases. Its 15 W TDP and mobile socket make it the only viable choice for ultraportable laptops where battery life and thermal constraints dominate. The i7-8650U also holds a slight edge in the aggregate average benchmark score, but this is driven by a different mix of PassMark tests that are not available for the i9-13900E, so it should not be interpreted as a performance victory.

The verdict comes down to platform: for a desktop workstation with heavy compute demands, the i9-13900E is the clear pick. For a mobile, power-constrained device, the i7-8650U is the only one of the two that fits the form factor. There is no scenario in the data where the i7-8650U beats the i9-13900E in direct computational performance, and the i9-13900E’s additional features (ECC, DDR5, more PCIe lanes) make it the more capable part in every measurable way.