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

Where Each One Wins

The Intel Core i7-12700 and AMD Ryzen 5 PRO 7645 both land at the 83rd percentile among all CPUs in the database, yet they achieve that standing through very different performance profiles. The recorded head-to-head data shows Intel winning 13 of 17 benchmark comparisons, while AMD takes 4. The Intel part dominates heavily threaded workloads, while the AMD chip claims the top spot in single-core integer and legacy single-thread tasks.

The Intel Core i7-12700 is the clear choice for multi-threaded productivity and content creation. Its advantage is largest in floating-point math, where it scores 79.6% higher than the AMD part. It also leads by 44% in Cinebench R15 multicore, 42.5% in integer math, and 31.3% in data compression. These are tasks that scale with core count and thread count, and the Intel processor has 12 cores and 20 threads versus 6 cores and 12 threads for the AMD chip. For rendering, video encoding, and database-style workloads, the benchmark data points squarely at Intel.

The AMD Ryzen 5 PRO 7645 wins the single-core efficiency battle in specific legacy and integer-heavy tests. It beats the Intel part by 38.2% in Cinebench R23 single-core, a massive margin that reflects its higher boost clock of 5.10 GHz and newer Zen 4 architecture. It also wins in prime number finding by 49%, a test that is highly sensitive to per-core integer throughput. The AMD chip leads in Cinebench R15 single-core by 11.7% and in physics by 2.5%, though the latter is a narrow margin.

There is one notable near-tie: Cinebench R23 multicore shows Intel ahead by just 0.2%, with scores of 21751 versus 21710. This is effectively a statistical dead heat, suggesting that the Intel part's extra cores are nearly offset by the AMD part's superior per-core performance in this specific rendering workload. The AMD processor is the better pick when single-threaded responsiveness and per-core integer work matter most.

FAQ

Q: Which processor has more cores and threads?

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

Q: Which CPU wins in single-threaded performance?

A: The AMD Ryzen 5 PRO 7645 wins the biggest single-thread test, leading by 38.2% in Cinebench R23 single-core. However, Intel wins PassMark single-thread by 5.8%, so the result depends on the benchmark methodology.

Q: How close are these two processors in overall average score?

A: The Intel Core i7-12700 has an average benchmark score of 32942, while the AMD Ryzen 5 PRO 7645 averages 32446, a difference of roughly 1.5% in favor of Intel.

Q: Does the AMD chip support ECC memory?

A: Yes, the AMD Ryzen 5 PRO 7645 supports ECC memory. The Intel Core i7-12700 does not.

Q: Which processor has a higher boost clock?

A: The AMD Ryzen 5 PRO 7645 boosts to 5.10 GHz, while the Intel Core i7-12700 boosts to 4.90 GHz.

Q: What are the process nodes for each chip?

A: The Intel Core i7-12700 uses Intel's 10 nm process, while the AMD Ryzen 5 PRO 7645 uses TSMC's 5 nm process.

Head-to-Head Benchmarks

The largest single margin in the entire comparison belongs to the Intel Core i7-12700 in PassMark floating-point math. It scores 81191 against 45202 for the AMD chip, a 79.6% advantage. This is a decisive win for Intel, reflecting the raw throughput advantage of 12 cores with 20 threads over 6 cores with 12 threads. Integer math follows a similar pattern: Intel scores 106554 versus 74782, a 42.5% lead.

Cinebench R15 multicore is another major Intel win, with a score of 3151 versus 2188, a 44% delta. Data compression also favors Intel heavily, 375950 versus 286298, a 31.3% margin. These results show that the Intel part is substantially faster in workloads that can use all available threads.

The AMD Ryzen 5 PRO 7645 has its own standout victories. Cinebench R23 single-core is the most dramatic: AMD scores 3065 versus Intel's 1894, a 38.2% lead. This is the inverse of the multicore picture, showing that the Zen 4 core is far more efficient per thread in this workload. The prime number finding test is even more lopsided in percentage terms, with AMD at 198 versus Intel at 101, a 49% advantage. This test is a strong indicator of per-core integer performance.

The middle ground contains several smaller but consistent Intel wins. Cinebench R20 multicore shows Intel ahead by 16.7%, and Cinebench R20 single-core shows Intel ahead by 16.6%, an interesting reversal from the R23 single-core result. PassMark multithread favors Intel by 18.8%, data encryption by 20.9%, and extended instructions by 10.9%. Random string sorting goes to Intel by 12.8%. PassMark single-thread goes to Intel by 5.8%, a modest but clear margin.

The Cinebench R23 multicore result deserves special attention. Intel wins by only 0.2%, with scores of 21751 and 21710. This is the closest result in the entire head-to-head set, and it shows that the AMD chip's per-core efficiency can nearly compensate for Intel's core count advantage in certain rendering workloads. Similarly, PassMark physics is nearly tied, with AMD ahead by just 2.5% (1598 versus 1558).

Specification Differences

The two processors differ in nearly every core specification. The Intel Core i7-12700 has 12 cores and 20 threads, while the AMD Ryzen 5 PRO 7645 has 6 cores and 12 threads. Base clocks are 2.10 GHz for Intel and 3.80 GHz for AMD, while boost clocks are 4.90 GHz and 5.10 GHz respectively. Both have a TDP of 65.

Cache layouts diverge significantly. The Intel part has 80 KB of L1 per core, 1.25 MB of L2 per core, and 25 MB of shared L3. The AMD part has 64 KB of L1 per core, 1 MB of L2 per core, and 32 MB of shared L3. The AMD chip has more L3 cache overall, while Intel has more L1 and L2 per core.

Memory support differs as well. The Intel Core i7-12700 supports both DDR4 and DDR5, while the AMD Ryzen 5 PRO 7645 supports only DDR5. Both use dual-channel memory buses. The AMD chip has a recorded memory bandwidth of 83.2 GB/s, while no bandwidth figure is recorded for the Intel part. ECC memory is supported by AMD but not by Intel.

PCIe configurations are not identical. Intel provides Gen 5 with 16 lanes from the CPU, while AMD provides Gen 5 with 24 lanes from the CPU. Both processors include integrated graphics: Intel with UHD Graphics 770 and AMD with Radeon Graphics. The Intel part targets the desktop market segment, while the AMD part is listed for server and workstation use, despite sharing the same 65 W TDP.

Sockets are incompatible. Intel uses Socket 1700, while AMD uses Socket AM5. The Intel chip has a die size of 215 mm² and is built on a 10 nm process, while the AMD chip has a die size of 71 mm² and is built on a 5 nm process. The AMD processor contains 6,570 million transistors; no transistor count is recorded for the Intel part. The Intel part has a launch MSRP of $349, while no launch MSRP is recorded for the AMD chip. Neither processor has an unlocked multiplier.

Architecture Differences

The Intel Core i7-12700 is built on the Alder Lake architecture, specifically Alder Lake-S, and belongs to the 12th generation of Core processors. The AMD Ryzen 5 PRO 7645 uses the Zen 4 architecture with the Raphael codename, part of the 7000 series. These are fundamentally different design approaches.

The process technology gap is substantial. Intel fabricates its chip on a 10 nm node at its own foundry, while AMD uses TSMC's 5 nm node. This explains the dramatic difference in die size: 215 mm² for Intel versus 71 mm² for AMD. The smaller process node allows the AMD chip to pack 6,570 million transistors into a much smaller area. The Intel chip has no recorded transistor count, but its larger die on an older node indicates a less dense design.

The core count difference reflects different design philosophies. Intel uses 12 cores and 20 threads, which suggests a hybrid or high-thread-count configuration typical of Alder Lake. AMD uses 6 cores and 12 threads, a more conventional layout but with higher clock speeds per core. The AMD chip's higher boost clock of 5.10 GHz, compared to 4.90 GHz for Intel, is enabled by the more efficient 5 nm process and Zen 4 architecture.

Cache architecture also differs. Intel allocates 80 KB of L1 and 1.25 MB of L2 per core, with 25 MB of shared L3. AMD allocates 64 KB of L1 and 1 MB of L2 per core, with 32 MB of shared L3. The larger shared L3 on the AMD chip likely improves data locality for multi-threaded workloads, while the larger per-core L1 and L2 on the Intel chip may benefit single-threaded access patterns. The benchmark data supports this split, with Intel winning multicore throughput tests and AMD winning specific single-core tests.

Memory architecture reflects the generational divide. The Intel chip supports both DDR4 and DDR5, giving it flexibility for older platforms. The AMD chip supports only DDR5, with a recorded memory bandwidth of 83.2 GB/s. ECC memory support on the AMD chip aligns with its server and workstation market segment, while the Intel chip's lack of ECC aligns with its desktop focus. PCIe lane counts also differ, with AMD offering 24 Gen 5 lanes from the CPU versus 16 for Intel, which matters for expansion-heavy workstation builds.

The release timeline is not identical. The AMD Ryzen 5 PRO 7645 has a recorded release date of June 12, 2023, while no release date is recorded for the Intel Core i7-12700. Both processors remain active in production status. The Intel part's average benchmark score of 32942 is slightly higher than AMD's 32446, and both sit at the 83rd percentile among all CPUs in the database.