AMD Ryzen 5 PRO 7645 vs Intel Core i7-13705H Comparison

# Intel Core i7-13705H vs AMD Ryzen 5 PRO 7645

The data presents a fascinating mismatch: a 14-core Intel mobile processor with a 45W TDP facing off against a 6-core AMD desktop-class chip with a 65W TDP. The AMD Ryzen 5 PRO 7645 wins 14 of 17 head-to-head benchmarks, yet the Intel Core i7-13705H dominates in specific math workloads. The average benchmark scores are close—32,076 for Intel versus 32,446 for AMD—placing both in the 82nd and 83rd percentiles of all CPUs respectively. What makes this comparison compelling is how the Zen 4 architecture's efficiency overcomes a 133% core-count disadvantage in most tests, while Intel's hybrid design strikes back in floating-point and integer operations.

FAQ

Q: Which processor has the higher average benchmark score?

A: The AMD Ryzen 5 PRO 7645 leads with an average benchmark score of 32,446, compared to the Intel Core i7-13705H's 32,076. This places AMD in the 83rd percentile of all CPUs, one point ahead of Intel's 82nd percentile.

Q: How does the multi-core Cinebench R23 performance compare?

A: The AMD Ryzen 5 PRO 7645 scores 21,710 in Cinebench R23 multi-core, which is 26.3% higher than the Intel Core i7-13705H's 15,998. This is surprising given Intel has 14 cores and 20 threads versus AMD's 6 cores and 12 threads.

Q: Where does the Intel chip win decisively?

A: The Intel Core i7-13705H wins PassMark floating-point math by 39.5% (63,064 vs 45,202) and integer math by 14.9% (85,927 vs 74,782). It also leads in PassMark physics with a 16% advantage (1,854 vs 1,598).

Q: What are the single-core performance differences?

A: AMD wins single-core tests across the board. Cinebench R23 single-core shows AMD at 3,065 versus Intel's 2,258, a 26.3% gap. PassMark single-thread shows a narrower margin: 3,652 for AMD versus 3,483 for Intel, a 4.6% difference.

Q: How do the processors compare in memory and expansion capabilities?

A: The AMD Ryzen 5 PRO 7645 supports DDR5 memory only, has a memory bandwidth of 83.2 GB/s, and offers PCIe Gen 5 with 24 lanes. The Intel Core i7-13705H supports both DDR4 and DDR5 memory, with PCIe Gen 5 limited to 8 lanes. AMD also supports ECC memory, while Intel does not.

Q: Which processor has a higher boost clock?

A: The AMD Ryzen 5 PRO 7645 boosts to 5.10 GHz, slightly higher than the Intel Core i7-13705H's 5.00 GHz. AMD also has a much higher base clock of 3.80 GHz versus Intel's 2.40 GHz.

The Verdict

The data points to a clear overall winner: the AMD Ryzen 5 PRO 7645. It wins 14 of 17 benchmarks, including every Cinebench test and the majority of PassMark workloads. For users prioritizing multi-threaded rendering, data compression, encryption, and single-core responsiveness, AMD is the superior choice. The 26.3% lead across all Cinebench versions is consistent and substantial. The AMD chip also offers ECC memory support and triple the PCIe lanes, making it suitable for workstation reliability and expandability.

However, the Intel Core i7-13705H is not without its niche. It wins PassMark floating-point math by 39.5% and integer math by 14.9%, plus physics by 16%. For workloads heavily dependent on these specific operations—scientific computing, physics simulations, or certain financial modeling—Intel's hybrid architecture provides a measurable advantage. The Intel chip also has a lower TDP of 45W versus AMD's 65W, which matters for mobile thermal constraints.

The choice ultimately depends on workload profile. Users who run diverse applications, especially those leveraging Cinebench-style rendering or general productivity, should pick AMD. Users whose primary applications are dominated by floating-point and integer math, and who value lower power draw, should consider Intel. The data does not support a universal recommendation for Intel, given AMD's overwhelming benchmark dominance.

Head-to-Head Benchmarks

The Cinebench results are remarkably uniform: AMD wins every version by exactly 26.3%. In R15 multi-core, AMD scores 2,188 versus Intel's 1,612. In R20 multi-core, AMD reaches 9,118 against Intel's 6,719. The R23 multi-core gap is the most dramatic: 21,710 for AMD versus 15,998 for Intel. Single-core Cinebench tests show the same 26.3% delta, with AMD scoring 308 in R15, 1,287 in R20, and 3,065 in R23, compared to Intel's 227, 948, and 2,258 respectively. This consistency suggests a fundamental architectural advantage for Zen 4 in this benchmark suite.

PassMark tests reveal a more nuanced picture. AMD wins data compression by 4.4% (286,298 vs 273,720) and data encryption by 2% (16,657 vs 16,324). Extended instructions show a 27.5% AMD advantage (21,813 vs 15,810), and find prime numbers demonstrates a 41.4% lead (198 vs 116). Random string sorting favors AMD by 15.3% (34,557 vs 29,285). The multithread score is close: AMD leads by 4% (25,489 vs 24,460), and single-thread shows a 4.6% AMD edge (3,652 vs 3,483).

Intel's wins are equally telling. Floating-point math is a landslide: 63,064 versus 45,202, a 39.5% advantage. Integer math shows Intel at 85,927 versus 74,782, a 14.9% lead. Physics goes to Intel with 1,854 versus 1,598, a 16% margin. These are not minor victories; they represent substantial performance advantages in specific computational domains. The data suggests Intel's 14-core design with 20 threads excels at parallel mathematical operations, while AMD's 6-core Zen 4 architecture dominates more general and single-threaded workloads.

Specification Differences

The core and thread counts differ dramatically: Intel has 14 cores and 20 threads, while AMD has 6 cores and 12 threads. Base clocks are 2.40 GHz for Intel and 3.80 GHz for AMD, a 1.4 GHz difference. Boost clocks are closer: 5.00 GHz for Intel versus 5.10 GHz for AMD. TDP ratings show Intel at 45W and AMD at 65W. The socket types are incompatible: Intel uses BGA 1744, while AMD uses Socket AM5.

Memory support differs significantly. Intel supports both DDR4 and DDR5, while AMD supports only DDR5. Both use dual-channel configurations, but AMD specifies a memory bandwidth of 83.2 GB/s, while Intel's is not listed. ECC memory is supported by AMD but not Intel. PCIe lanes show a major gap: AMD offers Gen 5 with 24 lanes, while Intel provides Gen 5 with only 8 lanes. Integrated graphics differ: Intel has Iris Xe Graphics 96EU, while AMD has Radeon Graphics. The market segment also varies: Intel is listed as Mobile, while AMD is listed as Server/Workstation.

Architecture Differences

The manufacturing process is a key differentiator. Intel uses a 10 nm process from its own foundry, while AMD uses a 5 nm process from TSMC. This process advantage likely contributes to AMD's performance efficiency. The die sizes reflect this: Intel's die is 257 mm², while AMD's is 71 mm². AMD's transistor count is listed at 6,570 million, while Intel's is not specified.

Cache hierarchies differ in structure. Intel provides 80 KB L1 per core, 2 MB L2 per core, and 24 MB shared L3. AMD provides 64 KB L1 per core, 1 MB L2 per core, and 32 MB shared L3. Despite having fewer cores, AMD's larger L3 cache may benefit workloads with data reuse. The architectures themselves are fundamentally different: Intel uses Raptor Lake-H (a hybrid design with performance and efficiency cores), while AMD uses Zen 4 (Raphael) with uniform cores. The release dates are also distinct: Intel launched on 2023-01-03, while AMD launched on 2023-06-12.

Where Each One Wins

The AMD Ryzen 5 PRO 7645 is the clear winner in rendering and content creation workloads. Its consistent 26.3% advantage across all Cinebench R15, R20, and R23 tests indicates superior multi-threaded rendering performance. Users running video exports, 3D rendering, or any Cinebench-like workload should strongly prefer AMD. The 41.4% lead in prime number finding suggests AMD is also better for certain cryptographic or mathematical workloads. The 27.5% advantage in extended instructions points to SIMD-heavy applications favoring AMD. Data compression and encryption workloads see modest AMD leads of 4.4% and 2% respectively. Single-thread performance, as shown by the 4.6% PassMark lead and larger Cinebench margins, favors AMD for everyday responsiveness and lightly-threaded applications.

The Intel Core i7-13705H wins in specific numerical processing domains. The 39.5% advantage in floating-point math makes it the choice for scientific simulations, financial modeling, or any workload with heavy FPU usage. The 14.9% lead in integer math benefits database operations, image processing, or cryptography that uses integer arithmetic. The 16% physics score advantage suggests Intel is better for certain physics simulation engines. For users whose primary applications are these specific math-heavy workloads, Intel offers a tangible performance benefit. Additionally, Intel's lower 45W TDP versus AMD's 65W makes it more suitable for thermally-constrained mobile environments, though the data does not quantify the real-world impact of this difference.