Intel Core i5-8400 vs Intel Core i5-8500T vs Intel Core i5-9600K
Intel Core i5-8400► remove
The Intel Core i5-8400 is a mid-range 6-core CPU. The processor belongs to the Coffee Lake generation and was presented in September 2017. It does not support Hyper-Threading, which means it can run six threads simultaneously. The base clock rate is 2.8 GHz and the CPU can speed up to 4.0 GHz under high load. Despite belonging to the new generation of CPUs, the Core i5-8400 is manufactured in an improved 14nm process.
The processor offers a strong performance increase compared to the Core i5-7400 due to its two additional cores. Single-core performance has not improved significantly compared to its Kaby Lake predecessor. As a mid-range model, the Core i5-8400 should be suitable for demanding games and programs.
The integrated Intel UHD Graphics 630 iGPU is supposed to offer higher performance as its clock rate has been increased by 50 MHz. The build is identical to that of the Intel HD Graphics 630. We do expect a performance improvement, but as a low-end solution it will probably only display current games smoothly at reduced details - if at all.
Intel specifies the TDP with 65 watts. Therefore, well-dimensioned cooling systems should easily manage to deal with the created heat. We expect increased efficiency due to the higher performance.
Intel Core i5-8500T► remove
The Intel Core i5-8500T is a desktop processor of the Coffee Lake generation. It offers 6 cores clocked at 2.1 - 3.5 GHz and is manufactured in the again improved 14nm process (14nm++). As a "T" model, te i5-8500T is rated with a low 35 Watt TDP and therefore sometimes even used in laptops.
Thanks to the additional 2 cores, the Coffee Lake 6-core CPUs can offer a performance uplift of up to 50% in multithreaded workloads compared to the Kaby Lake predecessors.
Intel Core i5-9600K► remove
The Intel Core i5-9600K is a high end desktop processor based on the Coffee Lake architecture. It offers an open multiplicator for easy overclocking and integrates 6 cores (no Hyperthreading therefore also 6 threads) clocked at 3.7 - 4.6 GHz and it needs a new Z390 based mainboard. It is manufactured in the second iteration of the improved 14nm process (14nm++).
Compared to the older Core i5-8600K, the 9600K offers about 10 to 15% higher performance. As the CPU still offers 6 cores and threads, the improvements are mostly due to the higher clock speeds. As a fast mid range desktop CPU, the i5-9600K is suited even for very demanding applications and perfect for 3D gaming.
The integrated Intel UHD Graphics 630 graphics card is clocked at up to 1.15 GHz and offers no advantage compared to previous generations. As it is a very low end GPU, only some low demanding games like Hearthstone can be played with it (see GPU page for benchmarks).
Intel specifies the TDP at 95 Watt, so if the CPU is used in laptops a big and chunky cooling system is needed to avoid throttling and lower clock speeds under sustained loads. When overclocking the CPU, the power consumption can easily rise up to 150 Watt and higher.
|Intel Core i5-8400||Intel Core i5-8500T||Intel Core i5-9600K|
|Intel Core i5 (Desktop)||Intel Core i5 (Desktop)||Intel Core i5 (Desktop)|
|Coffee Lake-S||Coffee Lake-S||Coffee Lake-S|
|: Core i5 (Desktop) Coffee Lake-S|
|2800 - 4000 MHz||2100 - 3500 MHz||3700 - 4600 MHz|
|384 KB||384 KB||512 KB|
|1.5 MB||1.5 MB||1.5 MB|
|9 MB||9 MB||9 MB|
|6 / 6||6 / 6||6 / 6|
|Dual-Channel DDR3(L)-1600/DDR4-2666 Memory Controller, HyperThreading, AVX, AVX2, AES-NI, TSX-NI, Quick Sync, Virtualization, vPro||Dual-Channel DDR4-2666 Memory Controller, AVX, AVX2, AES-NI, TSX-NI, Quick Sync, Virtualization, vPro||Dual-Channel DDR4-2666 Memory Controller, HyperThreading, AVX, AVX2, AES-NI, TSX-NI, Quick Sync, Virtualization, vPro|
|iGPU||Intel UHD Graphics 630 (350 - 1050 MHz)||Intel UHD Graphics 630 (350 - 1100 MHz)||Intel UHD Graphics 630 (350 - 1150 MHz)|
|Intel Core i5 (Desktop) 8400||Intel Core i5 (Desktop) 8500T||Intel Core i5 (Desktop) 9600K|