AMD Ryzen 5 2500X vs Intel Core i5-8500B Comparison

Where Each One Wins

The benchmark split between these two processors is unusually clean, with each part claiming a distinct testing domain. The Intel Core i5-8500B wins exclusively in Geekbench workloads, taking both the single-core and multi-core tests. The AMD Ryzen 5 2500X wins every Cinebench test, across R15, R20, and R23, in both single-core and multi-core configurations. That gives the AMD part six wins out of eight recorded benchmarks, with the Intel part taking the remaining two.

Looking at the magnitude of those wins, the AMD Ryzen 5 2500X does not just edge out the Intel part in Cinebench; it holds a consistent margin of roughly 7% across all six Cinebench tests. The delta is nearly identical in single-core and multi-core runs, which suggests a uniform architectural advantage in that specific rendering workload. Meanwhile, the Intel Core i5-8500B posts a much larger margin in Geekbench, with a 31.1% lead in multi-core and a 25% lead in single-core. So the data shows two entirely different performance profiles: AMD dominates Cinebench by a narrow but reliable margin, while Intel dominates Geekbench by a wide margin.

The practical implication is that workload type matters more than raw core count or thread count. If the target application uses the Cinebench rendering path, the Ryzen 5 2500X is the stronger choice. If the target application follows the Geekbench pattern, the Intel part is clearly superior. Neither processor is universally faster, and the user's software selection will determine which one delivers better results.

Architecture Differences

The two chips come from different design philosophies and manufacturing processes. The Intel Core i5-8500B is built on Intel's 14 nm process node, using the Coffee Lake architecture, and it is manufactured by Intel itself. The AMD Ryzen 5 2500X uses a 12 nm process node, built on the Zen architecture with the Zen+ (Pinnacle Ridge) refinement, and is manufactured by GlobalFoundries. The AMD part has a smaller transistor node, but the Intel part has a smaller die size at 154 mm² versus 213 mm² for the AMD chip. The AMD processor packs 4,800 million transistors, while the Intel die size figure appears without a transistor count in the recorded data.

Core and thread configurations differ substantially. The Intel Core i5-8500B offers 6 cores and 6 threads, meaning it has no simultaneous multithreading. The AMD Ryzen 5 2500X offers 4 cores and 8 threads, using SMT to double its thread count. This means the Intel part has two additional physical cores, while the AMD part has four additional logical threads. The cache hierarchy also differs: Intel provides 64 KB of L1 per core, 256 KB of L2 per core, and 9 MB of shared L3 cache. AMD provides 96 KB of L1 per core, 512 KB of L2 per core, and 8 MB of shared L3 cache. So the AMD part has more cache per core at each level, while the Intel part has a larger total L3 pool.

Clock speeds favor the AMD part at base frequency, with 3.60 GHz versus 3.00 GHz for the Intel chip. Boost clocks are closer: the AMD part reaches 4.00 GHz, while the Intel part reaches 4.10 GHz. Both chips carry a 65 W TDP, so power envelopes are identical in the recorded specifications. Memory support is DDR4 for both, with dual-channel buses, but the AMD part shows a higher memory bandwidth at 46.9 GB/s versus 42.7 GB/s for the Intel part. Neither supports ECC memory. Both use PCIe Gen 3 with 16 lanes from the CPU.

The Intel part includes integrated graphics with UHD Graphics 630, while the AMD Ryzen 5 2500X has no integrated graphics at all. This is a meaningful feature difference for systems that require a display output without a discrete GPU. The AMD part has an unlocked multiplier, allowing overclocking, while the Intel part is locked. Sockets also differ: the Intel chip uses BGA 1440, which is a soldered mobile-style package, while the AMD chip uses Socket AM4, a standard desktop socket. The Intel part is marked end-of-life in production status, while the AMD part remains active.

Head-to-Head Benchmarks

The Cinebench R15 multi-core test sets the pattern: the AMD Ryzen 5 2500X scores 810 against the Intel Core i5-8500B's 753, a 7% advantage. The single-core R15 test shows the same 7% gap, with AMD at 114 and Intel at 106. Moving to Cinebench R20, the AMD part scores 3375 in multi-core versus 3141 for Intel, again a 6.9% margin. Single-core R20 shows AMD at 476 against Intel's 443, also 6.9% apart. The R23 results continue the trend: AMD scores 8036 in multi-core and 1134 in single-core, while Intel scores 7480 and 1056 respectively, with the same 6.9% delta in both cases.

The consistency of that 6.9% to 7% margin across six Cinebench tests is remarkable. It suggests that the AMD architecture's advantage in this workload is stable regardless of the specific Cinebench version or the number of threads being used. Even though the Intel part has two more physical cores, the AMD part's SMT implementation and higher base clock appear to compensate fully in this rendering test.

Geekbench tells a completely different story. In the multi-core test, the Intel Core i5-8500B scores 4998 against the AMD part's 3813, giving Intel a 31.1% lead. That is a massive margin, far larger than any Cinebench gap. The single-core Geekbench test shows Intel at 1407 versus AMD at 1126, a 25% advantage for Intel. These are not close results. The Intel chip is dramatically ahead in Geekbench, and the margin is roughly four times larger than the AMD chip's Cinebench advantage.

The average benchmark score in the database reflects the split: the Intel part averages 2423 across all recorded tests, while the AMD part averages 2361. That puts the Intel part slightly ahead overall, by about 2.6%. Both processors sit at the 48th percentile among all CPUs in the database, indicating they occupy the same general performance tier despite their divergent workload-specific results.

The Verdict

The recorded data supports a workload-dependent recommendation rather than a blanket winner. The AMD Ryzen 5 2500X should be chosen when the primary software relies on Cinebench-style rendering workloads, where it holds a steady 7% advantage across every version of the test. It also offers an unlocked multiplier for overclocking, a larger per-core cache allocation, higher memory bandwidth, and a smaller process node. It does not include integrated graphics, so a discrete GPU is mandatory.

The Intel Core i5-8500B should be chosen when the primary software follows the Geekbench pattern, particularly for multi-threaded applications that benefit from its two additional physical cores. The 31.1% multi-core lead and 25% single-core lead in Geekbench are decisive. It includes UHD Graphics 630 for systems without a discrete GPU, and it has a slightly higher boost clock at 4.10 GHz. The Intel part also posts a marginally higher average benchmark score overall, 2423 versus 2361.

For a general-purpose system with mixed workloads, the average score slightly favors Intel, but the margin is small and within the noise of typical application variability. The deciding factor should be the specific software suite. If the user cannot identify a dominant workload, the Intel part's higher average score and integrated graphics make it the safer baseline choice. If the user knows the workload is Cinebench-heavy, the AMD part's consistent advantage there is the clear pick.

FAQ

Q: Which processor has more physical cores?

A: The Intel Core i5-8500B has 6 physical cores, while the AMD Ryzen 5 2500X has 4 physical cores. However, the AMD part has 8 threads through SMT, while the Intel part has only 6 threads.

Q: How large is the AMD Ryzen 5 2500X's lead in Cinebench R23 multi-core?

A: The AMD part scores 8036 versus 7480 for the Intel part, a 6.9% advantage in the Cinebench R23 multi-core test.

Q: Does the Intel Core i5-8500B have integrated graphics?

A: Yes, it includes UHD Graphics 630. The AMD Ryzen 5 2500X has no integrated graphics, so it requires a separate graphics card for display output.

Q: Which processor has a higher average benchmark score?

A: The Intel Core i5-8500B has an average benchmark score of 2423, while the AMD Ryzen 5 2500X averages 2361. Both sit at the 48th percentile among all CPUs in the database.

Q: Can the AMD Ryzen 5 2500X be overclocked?

A: Yes, it has an unlocked multiplier. The Intel Core i5-8500B has a locked multiplier, so it cannot be overclocked through standard multiplier adjustments.

Q: What is the memory bandwidth difference between the two processors?

A: The AMD Ryzen 5 2500X supports 46.9 GB/s of memory bandwidth, while the Intel Core i5-8500B supports 42.7 GB/s. Both use dual-channel DDR4 memory.