Intel Core i5-8500 vs Intel Core i5-9400F Comparison

The Intel Core i5-8500 and Intel Core i5-9400F are two six-core Coffee Lake desktop processors that, on paper, appear nearly identical. Both share the same core and thread count, the same 4.10 GHz boost clock, and the same 65 W TDP. Yet the benchmark data reveals a more nuanced relationship, with the i5-8500 winning 13 of the 19 head-to-head comparisons while the i5-9400F counters with 6 wins, including a decisive victory in Geekbench multi-core. The key differentiator is not raw compute potential but feature set: the i5-8500 includes UHD Graphics 630 integrated graphics, while the i5-9400F has none, a trade-off that reshapes the value proposition for different use cases.

Where Each One Wins

The Intel Core i5-8500 establishes its dominance across the Cinebench suite, winning all six Cinebench R15, R20, and R23 tests, both single-core and multi-core. Its margins are slim but consistent, ranging from 0.4% to 0.5% over the i5-9400F. This suggests the i5-8500 holds a slight but reliable edge in rendering workloads that scale with sustained all-core operation. The data also shows the i5-8500 winning in PassMark integer math (1.5% ahead), floating-point math (0.1% ahead), multithread (0.8% ahead), and data encryption (4.3% ahead). For users running CPU-bound productivity tasks, video encoding, or 3D rendering, the i5-8500 is the safer bet according to these benchmarks.

The Intel Core i5-9400F, meanwhile, wins the Geekbench multi-core test by a substantial 6.9% margin, scoring 5106 against the i5-8500's 4752. It also edges ahead in PassMark physics (3.8% faster), extended instructions (1.7% faster), and find prime numbers (5.3% faster). These wins cluster around workloads that benefit from newer microarchitectural tweaks or memory access patterns. The i5-9400F's Geekbench advantage is particularly striking because it is the largest delta in the entire head-to-head set, suggesting that in certain synthetic workloads, the "Refresh" part of its Coffee Lake Refresh generation does provide a measurable uplift. The i5-9400F also wins the single-core Geekbench test, albeit by a negligible 0.1%.

The split is clear: the i5-8500 wins the majority of tests, but the i5-9400F wins the one test that matters most for overall system responsiveness in some evaluation frameworks. The i5-8500's wins are numerous but small; the i5-9400F's wins are fewer but include a larger outlier. For workloads that mirror Cinebench, the i5-8500 is preferable. For workloads that mirror Geekbench's multi-core test, the i5-9400F takes the crown.

Architecture Differences

Both processors are built on Intel's 14 nm process node and share the Coffee Lake architecture, with the i5-9400F belonging to the Coffee Lake Refresh generation. The most significant architectural difference is the presence of integrated graphics: the i5-8500 includes UHD Graphics 630, while the i5-9400F has no integrated graphics at all. This is the defining feature of the "F" suffix, and it means the i5-9400F requires a discrete GPU for any display output. The i5-8500, by contrast, can power a system without a dedicated graphics card, making it more flexible for budget builds or office machines.

The core layout is identical: 6 cores, 6 threads, with 64 KB of L1 cache per core, 256 KB of L2 cache per core, and 9 MB of shared L3 cache. Memory support is also the same: DDR4 with a dual-channel bus and 42.7 GB/s of bandwidth. Both use the Intel Socket 1151 and support PCIe Gen 3 with 16 lanes from the CPU. The base clock differs slightly: the i5-8500 runs at 3.00 GHz while the i5-9400F runs at 2.90 GHz, a 100 MHz deficit for the latter. The boost clock is identical at 4.10 GHz, so the i5-9400F must ramp higher to match the i5-8500's all-core performance.

The die size is reported for the i5-8500 at 154 mm², while the i5-9400F's die size is not listed in the data. The i5-8500 also has a launch MSRP of $192, while the i5-9400F has no launch MSRP recorded. The production status for both is end-of-life, so neither is a current-generation purchase. The i5-8500 was released in February 2018, while the i5-9400F followed nearly a year later in January 2019. The part number for the i5-9400F is notably longer, suggesting a different packaging or binning process. Neither processor has an unlocked multiplier, so overclocking is not an option for either.

Head-to-Head Benchmarks

The Cinebench results show a consistent if narrow lead for the i5-8500. In Cinebench R15 multi-core, the i5-8500 scores 814 against 810 for the i5-9400F, a 0.5% margin. The single-core R15 test is a dead tie at 114 points each. Moving to R20, the i5-8500 wins multi-core 3393 to 3376 (0.5%) and single-core 478 to 476 (0.4%). R23 continues the pattern: multi-core 8079 to 8040 (0.5%) and single-core 1140 to 1135 (0.4%). These are not dramatic differences, but they are repeatable across three generations of Cinebench, indicating a genuine, if small, performance advantage for the i5-8500 in rendering workloads.

The Geekbench results flip the script. The i5-9400F scores 5106 in multi-core against the i5-8500's 4752, a 6.9% advantage that is the largest in the entire comparison. The single-core test is nearly identical, with the i5-9400F winning 1344 to 1342 (0.1%). This Geekbench multi-core gap is curious because it contradicts the Cinebench results. The data suggests that the i5-9400F's microarchitecture handles Geekbench's specific workload pattern—which often involves memory latency and branch prediction—better than the i5-8500, despite the latter's higher base clock.

PassMark tests are split. The i5-8500 wins data compression (134673 to 132877, 1.4%), data encryption (3027 to 2902, 4.3%), integer math (26551 to 26155, 1.5%), floating-point math (22489 to 22465, 0.1%), multithread (9532 to 9455, 0.8%), and single-thread (2441 to 2428, 0.5%). The i5-9400F wins extended instructions (11684 to 11480, 1.7%), find prime numbers (38 to 36, 5.3%), physics (653 to 628, 3.8%), and random string sorting (16298 to 16294, effectively a tie at 0% delta). The i5-9400F's wins in physics and prime numbers are notable because those tests often stress the memory controller and branch logic, hinting at a refinement in the Refresh silicon.

FAQ

Q: Which processor has integrated graphics?

A: The Intel Core i5-8500 includes UHD Graphics 630, while the Intel Core i5-9400F has no integrated graphics. This means the i5-9400F requires a discrete GPU for video output, whereas the i5-8500 can run a system without one.

Q: What is the biggest performance difference between the two?

A: The largest delta is in Geekbench multi-core, where the i5-9400F leads by 6.9% (5106 vs 4752). The next largest wins are the i5-8500's 4.3% margin in PassMark data encryption and the i5-9400F's 5.3% margin in PassMark find prime numbers.

Q: How do they compare in Cinebench R23?

A: The i5-8500 wins both tests. In R23 multi-core, it scores 8079 against 8040 (0.5% ahead). In R23 single-core, it scores 1140 against 1135 (0.4% ahead).

Q: Are they the same generation of processor?

A: No. The i5-8500 is listed under the "Core i5 (Coffee Lake)" generation, while the i5-9400F is under "Core i5 (Coffee Lake Refresh)". The i5-8500 was released in February 2018, and the i5-9400F followed in January 2019.

Q: Do both processors support the same memory?

A: Yes. Both support DDR4 memory with a dual-channel bus and have a memory bandwidth of 42.7 GB/s. Neither supports ECC memory.

Q: Which processor has a higher base clock?

A: The i5-8500 has a base clock of 3.00 GHz, while the i5-9400F runs at 2.90 GHz. Both have the same 4.10 GHz boost clock.

The Verdict

The data presents a clear but nuanced verdict. For users who prioritize integrated graphics, the i5-8500 is the only choice, as the i5-9400F cannot output video without a discrete GPU. The i5-8500 also wins the majority of benchmark tests, including all Cinebench variants and several PassMark workloads, making it the better all-rounder for rendering, integer math, and encryption. Its 4.3% lead in data encryption and 1.5% lead in integer math are the kinds of margins that matter for database work or scientific computation.

The i5-9400F, however, is not without merit. Its 6.9% Geekbench multi-core victory is substantial and suggests that in certain synthetic workloads, it is the faster chip. Its wins in physics (3.8%), find prime numbers (5.3%), and extended instructions (1.7%) point to a processor that handles specialized computational tasks with greater efficiency. For a user who knows their workload resembles Geekbench or PassMark physics, the i5-9400F could be the better buy.

The average benchmark scores are nearly identical: the i5-8500 averages 13142, while the i5-9400F averages 13041, a 0.8% difference. Both sit at the 68th percentile of all CPUs, and both are in the same performance tier according to the nearest rivals data. The i5-8500's nearest rival is the Intel Core Ultra 3 105UL (0.6% faster), while the i5-9400F's nearest rival is the Intel Core i7-10750H (0.1% faster). Neither chip is a clear winner on average, but the i5-8500's additional integrated graphics capability tips the scales for most general-purpose builds.

Specification Differences

The only fields where the two processors differ are as follows:

• Base Clock: The i5-8500 runs at 3.00 GHz, while the i5-9400F runs at 2.90 GHz.
• Generation: The i5-8500 is labeled "Core i5 (Coffee Lake)", while the i5-9400F is "Core i5 (Coffee Lake Refresh)".
• Integrated Graphics: The i5-8500 includes UHD Graphics 630, while the i5-9400F has no integrated graphics (null).
• Die Size: The i5-8500 has a die size of 154 mm², while the i5-9400F's die size is not listed.
• Release Date: The i5-8500 was released on 2018-02-13, while the i5-9400F was released on 2019-01-07.
• Launch MSRP: The i5-8500 has a launch MSRP of $192, while the i5-9400F has no launch MSRP recorded.
• Part Number: The i5-8500 is SR3XE, while the i5-9400F is BX80684I59400FBXC80684I59400FCM8068403358819SRF6M.

All other specifications—cores, threads, cache sizes, memory support, PCIe lanes, socket, TDP, boost clock, and process node—are identical between the two.