The Intel Core i5-11400F is a fast six-core desktop processor based on the new Rocket Lake architecture, which was introduced in March 2021. The processor clocks with a base clock of 2.6 GHz and reaches an all-core boost of 4.2 GHz under load. In single-thread applications, the Intel Core i5-11400F even reaches up to 4.4 GHz. Intel also gives the Rocket Lake processors the Hyperthreading feature, which allows the i5-11400F to process up to 12 threads simultaneously. As known, the Intel Core i5-11400F is manufactured in the 14 nm process. Nevertheless, many changes have been made with the Rocket Lake architecture, which is also reflected in the performance compared to the Comet Lake. The Intel Core i5-11400F is a non-K CPU, which means that there is no freely selectable multiplier. Thus, the scope for overclocking is relatively small.
Performance
Compared to the Intel Core i5-10400F, the Core i5-11400F offers a significantly better IPC. This can be seen clearly in the single-core benchmarks. But the multi-core performance also benefits from the better IPC compared to Comet-Lake. A performance increase of up to 20 percent can be expected. The Core i5 has to do without the TVB (Thermal Velocity Boost). However, 4.2 GHz is still possible when all cores are loaded. Due to the very high single-thread performance, the Intel Core i5-11400F is best suited for video games.
Graphics unit
The processors marked with “F” in the nomenclature don’t offer an integrated graphics unit. All other non-F processors can fall back on the Intel UHD Graphics 750 and also allow operation without a dedicated graphics card.
Power consumption
The TDP turns out relatively low with 65 watts. This is the PL1 value. For Turbo, the Intel Core i5-11400F offers a higher TDP of up to 154 watts with PL2. However, this may only be applied for a maximum of 28 seconds (dew). A good air cooler should be able to handle the resulting waste heat, so no AiO is necessary for this processor.
We use the following system for the following benchmarks and tests:
Raijintek Pean Benchtable
Intel Core i5-11400F
MSI B560 MAG Tomahawk WiFi
Alphacool Eisbaer 280 AiO
Nvidia Titan RTX (Nvidia 456.71)
Corsair HX 1200i power supply
G.Skill Trident Z Neo RGB DDR4-4000 memory kit 2 x 16 GB, set to DDR4-4000 CL16-19-39
Intel Optane 905P 480GB PCIe SSD
Microsoft Windows 10 Professional 64-bit (version 20H2)
From Intel comes the Core i5-11400F, as well as the used MSI B560 motherboard and Caseking provided us with the Raijintek Pean Showcase for the tests. We used the Alphacool Eisbaer 280 AiO for cooling and G.Skill provided us with the DDR4-4000 memory kit.
Processor benchmarks
In a direct comparison with the predecessor (Intel Core i5-10400F), the newer Rocket Lake S model can place itself in front, as expected. The Intel Core i5-11400F now has a lead of almost 20 percent. The even older Intel Core i5-9400F can even be surpassed by up to 66 percent in the multi-thread benchmarks. However, the comparison to the AMD Ryzen 5 5600X, which also comes with 6 cores and 12 threads, is much more interesting. This shows that Intel still has a lot of homework to do, because the gap to the rival from the red camp is clear and cannot be denied. Moreover, AMD can accommodate up to 16 cores on the AM4 socket with its chiplet design. Due to the larger cache (compared to Comet-Lake-S) Intel now only allows a maximum of 8 cores in the top model
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