AMD Ryzen 5 8645HS vs Intel Core i5-14600T Comparison

FAQ

Q: Which processor is faster in single-core performance?

A: The Intel Core i5-14600T is faster in every recorded single-core benchmark. It leads by 15.4% in Cinebench R15 single-core, 45.9% in Cinebench R23 single-core, and 2.4% in PassMark single-thread tests.

Q: Which processor has more cores and threads?

A: The Intel Core i5-14600T has 14 cores and 20 threads. The AMD Ryzen 5 8645HS has 6 cores and 12 threads.

Q: Does the AMD Ryzen 5 8645HS win any benchmark?

A: Yes. It wins PassMark extended instructions by 17.8% (20003 vs 16985). This is its only head-to-head victory across the 15 recorded tests.

Q: What is the memory support difference?

A: The Intel Core i5-14600T supports both DDR4 and DDR5, while the AMD Ryzen 5 8645HS supports only DDR5. Both use dual-channel memory buses.

Q: What is the TDP difference between the two processors?

A: The AMD Ryzen 5 8645HS has a TDP of 45 watts. The Intel Core i5-14600T has a TDP of 35 watts, which is lower despite having more cores.

Q: Which processor has the higher boost clock?

A: The Intel Core i5-14600T has a boost clock of 5.10 GHz. The AMD Ryzen 5 8645HS has a boost clock of 5.00 GHz.

Architecture Differences

The AMD Ryzen 5 8645HS is built on Zen 4 architecture under the Hawk Point codename, part of AMD's 8000 series. It uses a 4 nm process at TSMC, with 25,000 million transistors packed into a 178 mm² die. The Intel Core i5-14600T uses Raptor Lake architecture under the Raptor Lake-R codename, part of Intel's Core 14th Gen lineup. Its 10 nm process at Intel produces a larger 257 mm² die. The process node difference is substantial, with AMD's 4 nm process being much smaller than Intel's 10 nm process.

Core configuration differs fundamentally. The AMD chip has 6 cores and 12 threads, all using the same Zen 4 design. The Intel chip has 14 cores and 20 threads, reflecting Raptor Lake's hybrid arrangement of performance and efficiency cores. This core count gap explains much of the multicore performance difference.

Cache hierarchies also differ. The AMD Ryzen 5 8645HS has 64 KB of L1 cache per core, 1 MB of L2 per core, and 16 MB of shared L3 cache. The Intel Core i5-14600T has 80 KB of L1 per core, 2 MB of L2 per core, and 24 MB of shared L3 cache. Intel's larger cache allocation at every level gives it a structural advantage in workloads that benefit from larger working sets.

The socket and platform targets are different as well. The AMD chip uses AMD Socket FP8, a mobile-focused platform. The Intel chip uses Intel Socket 1700, a desktop platform. The market segments reflect this: the Ryzen 5 8645HS is a mobile processor, while the Core i5-14600T is a desktop processor.

PCIe support differs in generation and lane count. The AMD Ryzen 5 8645HS provides PCIe Gen 4 with 20 CPU lanes. The Intel Core i5-14600T provides PCIe Gen 5 with 16 CPU lanes. Intel's PCIe Gen 5 support offers higher bandwidth per lane, while AMD offers more total lanes.

Integrated graphics also differ. The AMD chip includes Radeon 760M graphics. The Intel chip includes UHD Graphics 770. The AMD processor supports DDR5 memory only, while the Intel processor supports both DDR4 and DDR5. The Intel chip supports ECC memory, while the AMD chip does not. The AMD Ryzen 5 8645HS has a memory bandwidth rating of 89.6 GB/s, while the Intel chip has no recorded memory bandwidth figure in the database.

The release dates are close: the AMD chip launched on December 5, 2023, and the Intel chip launched on January 7, 2024. The Intel chip has a recorded launch MSRP of $255. The AMD chip has no recorded launch MSRP.

The Verdict

The data points clearly to the Intel Core i5-14600T as the stronger performer in almost every measured workload. It wins 14 of 15 head-to-head benchmarks, with the AMD Ryzen 5 8645HS taking only one victory in PassMark extended instructions. The Intel chip's 41.1% lead in Cinebench R23 multicore is decisive for threaded workloads, and its 45.9% lead in Cinebench R23 single-core is equally dominant for lightly threaded tasks.

Buyers who prioritize raw compute should select the Intel Core i5-14600T. Its 14 cores and 20 threads deliver substantially higher multicore throughput, and its single-core scores are consistently ahead. The Intel chip also supports both DDR4 and DDR5 memory and includes ECC support, which may matter for specific professional use cases.

The AMD Ryzen 5 8645HS is the choice for mobile platforms. It is a mobile processor on AMD Socket FP8, while the Intel chip is a desktop processor on Socket 1700. For a laptop or compact mobile system, the AMD chip is the applicable part. Its 45 watt TDP is higher than the Intel chip's 35 watt TDP, but that comparison is complicated by the different form factors: one targets mobile, the other desktop.

The Intel chip's 10 nm process is older than AMD's 4 nm process, yet Intel still achieves higher performance. The database results show that the larger core count and higher boost clock (5.10 GHz vs 5.00 GHz) overcome the process node disadvantage. The Intel chip's 24 MB of L3 cache versus AMD's 16 MB also helps in cache-sensitive workloads.

Users who need PCIe Gen 5 support should favor the Intel chip. Users who need more PCIe lanes (20 vs 16) should favor the AMD chip. The Intel chip's launch MSRP of $255 provides a reference point for its market positioning, but the AMD chip has no recorded launch MSRP, so direct price comparison is not possible from the database.

Specification Differences

The AMD Ryzen 5 8645HS has 6 cores and 12 threads. The Intel Core i5-14600T has 14 cores and 20 threads. Base clocks differ significantly: the AMD chip runs at 4.30 GHz, while the Intel chip runs at 1.80 GHz. Boost clocks are close: 5.00 GHz for AMD, 5.10 GHz for Intel.

TDP differs: AMD is rated at 45 watts, Intel at 35 watts. The AMD chip uses AMD Socket FP8; the Intel chip uses Intel Socket 1700. Architecture differs: Zen 4 (Hawk Point) for AMD, Raptor Lake (Raptor Lake-R) for Intel.

Process node differs: AMD uses 4 nm at TSMC, Intel uses 10 nm at Intel. The AMD chip has 25,000 million transistors; the Intel chip has no recorded transistor count. Die size differs: 178 mm² for AMD, 257 mm² for Intel.

Cache differs at every level. AMD has 64 KB L1 per core, 1 MB L2 per core, and 16 MB shared L3. Intel has 80 KB L1 per core, 2 MB L2 per core, and 24 MB shared L3. Memory support differs: AMD supports DDR5 only, Intel supports DDR4 and DDR5. Both are dual-channel.

Memory bandwidth is recorded for AMD at 89.6 GB/s; Intel has no recorded value. ECC support differs: Intel supports ECC, AMD does not. PCIe differs: AMD has Gen 4 with 20 lanes, Intel has Gen 5 with 16 lanes. Integrated graphics differ: Radeon 760M for AMD, UHD Graphics 770 for Intel.

Market segment differs: AMD is mobile, Intel is desktop. Release dates differ: December 5, 2023 for AMD, January 7, 2024 for Intel. Launch MSRP is recorded for Intel at $255; AMD has no recorded launch MSRP. Neither processor has an unlocked multiplier.

Head-to-Head Benchmarks

The largest multicore gap appears in Cinebench R23 multicore, where the Intel Core i5-14600T scores 22447 against the AMD Ryzen 5 8645HS's 13220. That is a 41.1% lead for Intel, reflecting the 8-core and 8-thread advantage. The Cinebench R15 multicore test shows a smaller gap: 2262 for Intel versus 2094 for AMD, a 7.4% lead.

Single-core results are similarly lopsided. In Cinebench R23 single-core, Intel scores 3169 against AMD's 1714, a 45.9% lead. In Cinebench R15 single-core, Intel scores 319 against 270, a 15.4% lead. The PassMark single-thread test is much closer: 3744 for Intel versus 3653 for AMD, only a 2.4% difference.

PassMark integer math shows Intel ahead by 23.6%, scoring 95112 against 72640. Floating point math shows a 30.7% lead for Intel, 64726 against 44833. The PassMark physics test shows a 41.5% lead for Intel, 1873 against 1095. PassMark multithread shows Intel ahead by 14.5%, 26409 against 22586.

Data compression favors Intel by 12%, 301827 against 265483. Data encryption favors Intel by 14.5%, 18226 against 15588. Prime number finding favors Intel by 38%, 121 against 75. Random string sorting favors Intel by 7.5%, 34310 against 31748.

The AMD Ryzen 5 8645HS's only win is PassMark extended instructions, where it scores 20003 against Intel's 16985, a 17.8% lead. This indicates a specific instruction set advantage for AMD in this workload, but it does not offset the Intel chip's dominance elsewhere.

The average benchmark scores place the two processors close together overall: AMD has an average of 33244, Intel has 32707. Both rank at the 83rd percentile among all CPUs. The nearest rivals for the AMD chip include the Intel Core i7-14701E (0.1% ahead), AMD Ryzen 9 PRO 6950H (0.1% ahead), Intel Core i5-12600HX (0.4% behind), and AMD Ryzen 7 7745HX (0.5% ahead). The nearest rivals for the Intel chip include the Intel Core Ultra 7 155H (0% difference), AMD Ryzen 5 7400F (0.1% behind), AMD Ryzen AI 7 PRO 360 (0.1% ahead), and AMD Ryzen 7 PRO 6850H (0.3% behind). Despite the Intel chip's head-to-head dominance, both processors sit in the same performance tier when measured by average benchmark score across all CPUs.