AMD Ryzen 5 7645HX vs Intel Core i7-12700 Comparison

Head-to-Head Benchmarks

The benchmark database records 15 shared tests between the AMD Ryzen 5 7645HX and the Intel Core i7-12700. The Intel part wins 11 of those comparisons, while the AMD chip takes four. The overall average benchmark score leans slightly toward AMD: 33,668 for the Ryzen 5 7645HX versus 32,942 for the Core i7-12700. That narrow gap hides a wide spread in individual workloads.

The largest Intel victory comes in Cinebench R23 multi-core, where the Core i7-12700 posts 21,751 against 13,985 for the Ryzen 5 7645HX, a 35.7% margin. The same pattern appears in Cinebench R15 multi-core: Intel scores 3,151, AMD scores 2,276, a 27.8% difference. Floating point math also favors Intel heavily, with an 81,191 score versus 48,798, a 39.9% gap. Integer math follows suit: 106,554 against 77,432, a 27.3% deficit for AMD.

The Ryzen 5 7645HX counters in single-threaded and specialized workloads. In Cinebench R15 single-core, AMD leads 289 to 272, a 6.3% advantage. PassMark single-thread shows a smaller edge: 3,907 versus 3,864, just 1.1% ahead. The most dramatic AMD win is in prime number finding, where the Ryzen 5 7645HX scores 178 versus 101 for Intel, a 76.2% margin that suggests a strong advantage in that specific calculation pattern.

Other Intel wins are moderate. Data compression: 375,950 versus 302,256, a 19.6% lead. Data encryption: 20,143 versus 17,900, an 11.1% margin. Extended instructions: 24,184 versus 22,969, a 5% edge. PassMark multithread: 30,273 versus 26,476, 12.5% ahead. Random string sorting: 38,970 versus 34,434, an 11.6% gap. Physics: 1,558 versus 1,497, just 3.9% apart.

The single-core picture is mixed. Cinebench R23 single-core actually goes to Intel, 1,894 versus 1,809, a 4.5% margin, even though the older Cinebench R15 single-core test favors AMD by 6.3%. The PassMark single-thread results agree with the R15 test, giving AMD a 1.1% edge.

Where Each One Wins

The Intel Core i7-12700 dominates multi-threaded and throughput-oriented workloads. Its 12-core, 20-thread configuration gives it a structural advantage in Cinebench R23 and R15 multi-core tests, floating point math, integer math, data compression, encryption, and multithread benchmarks. Any task that can use many threads will see Intel pull ahead, often by double-digit percentages.

The AMD Ryzen 5 7645HX wins in narrowly defined single-thread and specialized math scenarios. The prime number finding test shows its largest victory, a 76.2% margin, indicating an architecture that handles that particular loop pattern much more efficiently. Single-thread PassMark and Cinebench R15 single-core also favor AMD, though by smaller amounts. For workloads that rely on one or two cores and avoid heavy floating point, the Ryzen 5 7645HX is the better pick.

The data also reveals where the two chips nearly tie. PassMark physics is within 3.9%, Cinebench R23 single-core within 4.5%, and extended instructions within 5%. These are the closest contested benchmarks and suggest that for mixed workloads with moderate thread counts, the difference shrinks considerably.

FAQ

Q: Which processor has the higher average benchmark score?

A: The AMD Ryzen 5 7645HX records an average benchmark score of 33,668, slightly above the Intel Core i7-12700's 32,942. That is a difference of roughly 2.2%.

Q: How large is Intel's lead in Cinebench R23 multi-core?

A: The Intel Core i7-12700 scores 21,751 in Cinebench R23 multi-core, while the AMD Ryzen 5 7645HX scores 13,985. That gives Intel a 35.7% advantage.

Q: In which test does the AMD Ryzen 5 7645HX show its biggest win?

A: The largest AMD win is in the PassMark find prime numbers test, where the Ryzen 5 7645HX scores 178 versus 101 for Intel, a 76.2% margin.

Q: Does the AMD chip win any single-core tests?

A: Yes. The Ryzen 5 7645HX wins Cinebench R15 single-core (289 versus 272, a 6.3% lead) and PassMark single-thread (3,907 versus 3,864, a 1.1% lead). However, Intel wins Cinebench R23 single-core (1,894 versus 1,809, a 4.5% margin).

Q: What do the percentile rankings show?

A: The AMD Ryzen 5 7645HX sits in the 84th percentile of all CPUs, while the Intel Core i7-12700 sits in the 83rd percentile. Despite Intel winning 11 of 15 head-to-head tests, the two chips are nearly equal in overall standing.

Q: Which processor has higher thread counts?

A: The Intel Core i7-12700 has 12 cores and 20 threads, while the AMD Ryzen 5 7645HX has 6 cores and 12 threads.

Specification Differences

The two processors differ in nearly every core specification. The AMD Ryzen 5 7645HX uses 6 cores and 12 threads, while the Intel Core i7-12700 uses 12 cores and 20 threads. Base clocks diverge significantly: the AMD chip runs at 4.00 GHz, the Intel at 2.10 GHz. Boost clocks are closer but still distinct: 5.00 GHz for AMD, 4.90 GHz for Intel.

Thermal design power also separates them. The Ryzen 5 7645HX has a 45 W TDP, while the Core i7-12700 has a 65 W TDP. The sockets are incompatible: AMD Socket FL1 for the Ryzen, Intel Socket 1700 for the Core i7.

Memory support differs as well. The AMD chip supports DDR5 only with dual-channel access and an 83.2 GB/s memory bandwidth. The Intel chip supports both DDR4 and DDR5 in dual-channel mode, but the database records no memory bandwidth figure for it. ECC memory is supported on the AMD side but not on the Intel side.

PCIe lanes also differ. The Ryzen 5 7645HX provides Gen 5 with 28 lanes (CPU only), while the Core i7-12700 provides Gen 5 with 16 lanes (CPU only). The integrated graphics are different: Radeon 610M for AMD, UHD Graphics 770 for Intel.

The Intel part has a recorded launch MSRP of $349; no launch MSRP is recorded for the AMD part. The Intel multiplier is locked, and the AMD multiplier is also locked.

Architecture Differences

The AMD Ryzen 5 7645HX belongs to the 7000 series and uses the Zen 4 architecture under the Dragon Range codename. It is built on a 5 nm process at TSMC, with 6,570 million transistors on a 71 mm² die. The AMD cache layout is 64 KB of L1 per core, 1 MB of L2 per core, and 32 MB of shared L3.

The Intel Core i7-12700 comes from the Core 12th Gen series and uses the Alder Lake architecture under the Alder Lake-S codename. It is built on a 10 nm process at Intel, with a 215 mm² die size and no transistor count recorded. The Intel cache layout is 80 KB of L1 per core, 1.25 MB of L2 per core, and 25 MB of shared L3.

Process node and foundry differ substantially: TSMC 5 nm for AMD versus Intel 10 nm for the Intel part. The die sizes reflect the different transistor densities and core counts. AMD's smaller die (71 mm² versus 215 mm²) packs fewer cores but a denser process.

The market segments differ as well. The AMD Ryzen 5 7645HX is a mobile processor, while the Intel Core i7-12700 is a desktop processor. The AMD part was released on 2023-01-03, while the Intel release date is not recorded in the database. Both are listed as active in production status.

The AMD part uses the Zen 4 microarchitecture with a 5 nm process, while Intel uses the Alder Lake hybrid architecture with a 10 nm process. The AMD part has no recorded 3D V-Cache, and neither part has a total L3 figure beyond the shared amounts listed.

The Verdict

The recorded data points to a clear split based on workload type. For multi-threaded rendering, compression, encryption, and floating point math, the Intel Core i7-12700 is the stronger choice. Its 35.7% lead in Cinebench R23 multi-core and 39.9% lead in floating point math are decisive margins. The Intel part also wins the overall head-to-head count, 11 wins to 4.

For single-threaded tasks and prime number calculation, the AMD Ryzen 5 7645HX holds the edge. The 76.2% advantage in prime number finding is the largest single-test margin recorded between these two parts. The AMD chip also wins single-thread PassMark and Cinebench R15 single-core, though by much smaller margins.

The average benchmark scores are nearly identical: 33,668 for AMD versus 32,942 for Intel. Percentile rankings are also close, with AMD in the 84th percentile and Intel in the 83rd percentile. That means the choice comes down to the specific workload mix rather than overall capability.

A user running heavily threaded productivity workloads, rendering, or mathematical operations should favor the Intel Core i7-12700. A user prioritizing single-thread responsiveness or specialized math patterns such as prime number searches should favor the AMD Ryzen 5 7645HX. The Intel part also offers DDR4 and DDR5 memory support, while the AMD part is DDR5-only but adds ECC support and a higher PCIe lane count.