Intel Core i5-1230U vs Intel Core i5-8500 Comparison

FAQ

Q: Which processor has the higher average benchmark score?

A: The Intel Core i5-8500 holds the higher average benchmark score at 13,142, compared to 12,559 for the Intel Core i5-1230U. The 8500 also sits at the 68th percentile of all CPUs, one point above the 1230U's 67th percentile.

Q: How do the two compare in Cinebench R23 multi-core performance?

A: The i5-8500 delivers a decisive win in Cinebench R23 multi-core, scoring 8,079 against the i5-1230U's 4,402. That translates to an 83.5% advantage for the desktop part.

Q: Does the newer mobile chip win any single-threaded tests?

A: Yes, the i5-1230U wins every single-thread benchmark in the head-to-head set. It leads by 39% in Cinebench R15 single-core, 13% in Cinebench R20 single-core, 13% in Cinebench R23 single-core, 21% in Geekbench single-core, and 10% in Passmark single-thread.

Q: Which CPU has more cores and threads?

A: The i5-1230U has 10 cores and 12 threads, while the i5-8500 has 6 cores and 6 threads. Despite this core deficit, the i5-8500 wins more multi-core tests in the head-to-head comparison.

Q: What is the thermal design power difference?

A: The i5-1230U is rated at a 9W TDP, while the i5-8500 is rated at 65W. The mobile chip's much lower TDP aligns with its BGA 1781 socket and mobile market segment.

Q: Which processor has the newer architecture and process node?

A: The i5-1230U uses Alder Lake architecture on a 10 nm process, whereas the i5-8500 uses Coffee Lake on a 14 nm process. The i5-1230U also supports both DDR4 and DDR5 memory, while the i5-8500 only supports DDR4.

The Verdict

The data points to two very different usage scenarios. The Intel Core i5-8500 is the clear choice for sustained multi-threaded workloads where raw throughput matters, especially in older rendering tests. Its 83.5% lead in Cinebench R23 multi-core is the largest margin in the entire comparison, and it also wins data compression, extended instructions, and random string sorting. Users running heavily threaded applications that scale with cores will find the 8500 significantly faster.

The Intel Core i5-1230U is the pick for general productivity, single-thread responsiveness, and cryptographic workloads. It wins 14 of the 19 head-to-head benchmarks, including all single-thread tests, integer math, floating-point math, physics, and data encryption. Its 57.8% advantage in data encryption is particularly notable. For users who prioritize snappy application launches, spreadsheet work, and encryption tasks, the 1230U is the better performer.

The 1230U also stands out for its efficiency. With a 9W TDP versus the 8500's 65W, the mobile chip delivers competitive multi-thread scores in newer Cinebench versions while consuming far less power. The 8500 wins in R15 and R23 multi-core, but the 1230U takes R20 multi-core by 13.1%, showing that architecture improvements can offset core count disadvantages in certain workloads.

The verdict is straightforward: choose the i5-8500 for legacy multi-threaded rendering and compression tasks, choose the i5-1230U for everything else, particularly mobile use, single-thread performance, and encryption.

Head-to-Head Benchmarks

The most striking result is in Cinebench R23 multi-core, where the i5-8500 scores 8,079 versus 4,402 for the i5-1230U, an 83.5% margin. This is the largest delta in the entire dataset and suggests the 8500's 6 full-size cores outperform the 1230U's hybrid arrangement in this specific workload. The i5-8500 also leads Cinebench R15 multi-core by 58.4% (814 vs 514), data compression by 18.1% (134,673 vs 114,042), extended instructions by 82.7% (11,480 vs 6,282), and random string sorting by 27.7% (16,294 vs 12,760).

The i5-1230U's wins are more numerous but generally smaller in magnitude. Its largest victory is data encryption, where it scores 7,176 against 3,027, a 57.8% advantage. It also dominates integer math by 30.9% (38,401 vs 26,551), physics by 24.2% (828 vs 628), and Geekbench single-core by 21% (1,699 vs 1,342). In Cinebench R15 single-core, the 1230U leads by 39% (186.8 vs 114), a huge margin that reflects its higher boost clock of 4.40 GHz.

The multi-core picture is mixed. The 8500 wins R15 and R23 multi-core by large margins, but the 1230U wins R20 multi-core by 13.1% (3,903 vs 3,393) and Geekbench multi-core by 2.5% (4,875 vs 4,752). Passmark multithread also favors the 1230U by 12.4% (10,881 vs 9,532). This inconsistency suggests that newer benchmark versions reward the 1230U's architecture, while older ones favor the 8500's higher sustained clock performance.

Floating-point math goes to the 1230U by 11.3% (25,340 vs 22,489), and prime number finding favors the 1230U by 34.5% (55 vs 36). The single-thread Passmark tests show a consistent 10% lead for the 1230U (2,712 vs 2,441).

Specification Differences

The two processors diverge sharply on core and thread counts. The i5-8500 offers 6 cores and 6 threads, while the i5-1230U offers 10 cores and 12 threads. Base clock rates are also wildly different: the 8500 runs at 3.00 GHz, while the 1230U lists a base clock of 1000.00 MHz. Boost clocks are closer, with the 8500 at 4.10 GHz and the 1230U at 4.40 GHz.

TDP is a major differentiator. The 8500 is rated at 65W, the 1230U at 9W. The 8500 uses Intel Socket 1151, while the 1230U uses Intel BGA 1781. The 8500 supports PCIe Gen 3 with 16 lanes (CPU only), whereas the 1230U supports PCIe Gen 4 with no lane specification listed.

Memory support differs: the 8500 only supports DDR4, while the 1230U supports both DDR4 and DDR5. Both use dual-channel memory buses, but the 8500 lists a memory bandwidth of 42.7 GB/s, while the 1230U has no bandwidth figure recorded. Neither supports ECC memory, and neither has an unlocked multiplier.

The 8500 has a die size of 154 mm², while the 1230U has no die size recorded. The 8500 also has a part number (SR3XE), while the 1230U does not. The 8500 is end-of-life, while the 1230U is active production. The 8500 launched in February 2018, the 1230U in February 2022.

Architecture Differences

The i5-8500 is built on Coffee Lake architecture with a 14 nm process node. Its cache layout includes 64 KB L1 per core, 256 KB L2 per core, and 9 MB shared L3. The i5-1230U uses Alder Lake architecture on a 10 nm process, with 80 KB L1 per core, 1.25 MB L2 per core, and 12 MB shared L3. The larger L2 and L3 caches on the 1230U likely contribute to its single-thread advantages.

The 1230U is an Alder Lake-U mobile part, while the 8500 is a Coffee Lake desktop part. This explains the socket difference (BGA 1781 vs Socket 1151) and the TDP gap (9W vs 65W). The integrated graphics also differ: the 8500 has UHD Graphics 630, while the 1230U has Iris Xe 80EU.

The 1230U's hybrid architecture likely explains its better performance in newer Cinebench versions despite fewer high-performance cores. Its 12 MB L3 cache is 33% larger than the 8500's 9 MB, which can improve data reuse in memory-intensive tasks. The 8500's larger die size of 154 mm² reflects the older 14 nm process, while the 1230U's die size is not recorded.

Both processors are manufactured by Intel, and neither uses a chiplet design or 3D V-Cache. The 8500's generation is "Core i5 (Coffee Lake)", while the 1230U's is "Core i5 (Alder Lake-U)". The 1230U supports DDR5 memory, a generational leap that the 8500 cannot match.

Where Each One Wins

The i5-8500 wins in scenarios requiring sustained multi-threaded throughput in older benchmarks. Its 83.5% lead in Cinebench R23 multi-core and 58.4% lead in R15 multi-core make it the stronger choice for rendering tasks that scale with core count. Data compression work also favors the 8500 by 18.1%, as does extended instruction processing by 82.7% and random string sorting by 27.7%. Users running compression pipelines, scientific computing with SIMD instructions, or older rendering engines will see clear benefits.

The i5-1230U dominates in single-thread performance across all recorded tests. Its 39% lead in Cinebench R15 single-core and 21% lead in Geekbench single-core indicate superior per-core efficiency. Encryption is the 1230U's standout victory at 57.8%, making it ideal for VPN software, disk encryption, and secure communications. Integer math benefits from the 1230U by 30.9%, physics by 24.2%, and floating-point math by 11.3%. Prime number finding also favors the 1230U by 34.5%.

For general productivity, the 1230U's wins in Geekbench multi-core (2.5%) and Passmark multithread (12.4%) suggest it handles mixed workloads well. The 1230U's 9W TDP makes it the only practical choice for fanless or ultra-portable designs, while the 8500's 65W TDP requires active cooling and a desktop platform.

In summary, the 8500 is the specialist for heavy multi-threaded compute, the 1230U is the generalist for single-thread responsiveness, encryption, and efficiency. The data shows a clear split: 5 wins for the 8500, 14 wins for the 1230U, but the 8500's wins include the largest margins of the comparison.