In depth comparison and review of Intel Core i5 8400 (8th Gen) and Intel Core i5 9400T (9th Gen). Compare dimensions, performance, cache memory, number of cores, clock speed, RAM, power efficiency and other important specifications and features to easily choose the right CPU for you. Our goal is to help you uncover differences between the products and find the processor that will best fit your needs.
| GENERAL | Intel Core i5 8400 (8th Gen) | Intel Core i5 9400T (9th Gen) |
|---|
| Product Type | Processor | Processor |
|---|
| PROCESSOR | Intel Core i5 8400 (8th Gen) | Intel Core i5 9400T (9th Gen) |
|---|
| Type | Intel Core i5 8400 (8th Gen) | Intel Core i5 9400T (9th Gen) |
|---|
| ARCHITECTURE |
|---|
| Processor Qty | 1 | 1 |
|---|---|---|
| Compatible Processor Socket | LGA1151 Socket | LGA1151 Socket |
| Manufacturing Process | 14 nm | 14 nm |
| Thermal Design Power | 65 W | 35 W |
| Thermal Specification | 100 °C | 100 °C |
| PCI Express Revision | 3.0 | 3.0 |
| PCI Express Configurations | 1x16, 2x8, 1x8+2x4 | 1x16, 2x8, 1x8+2x4 |
| PCI Express Lanes Qty | 16 | 16 |
| Architecture Features | Enhanced SpeedStep technology, Execute Disable Bit capability, Intel Virtualization Technology, Intel Turbo Boost Technology, Intel 64 Technology, streaming SIMD extensions 4.1, streaming SIMD extensions 4.2, Intel AES New Instructions (AES-NI), Thermal Monitoring Technologies, Idle States, Intel VT-x with Extended Page Tables (EPT), Intel Identity Protection Technology, Intel Secure Key, Intel Advanced Vector Extensions 2 (AVX2.0), Intel OS Guard, Intel Software Guard Extensions (SGX), Intel Memory Protection Extensions (MPX), Intel Optane Memory Supported, Intel Boot Guard | Enhanced SpeedStep technology, Execute Disable Bit capability, Intel Virtualization Technology, Intel 64 Technology, streaming SIMD extensions 4.1, streaming SIMD extensions 4.2, Intel Turbo Boost Technology 2.0, Intel AES New Instructions (AES-NI), Thermal Monitoring Technologies, Intel Virtualization Technology for Directed I/O (VT-d), Idle States, Intel VT-x with Extended Page Tables (EPT), Intel Identity Protection Technology, Intel Secure Key, Intel Advanced Vector Extensions 2 (AVX2.0), Intel OS Guard, Intel Software Guard Extensions (SGX), Intel Memory Protection Extensions (MPX), Intel Optane Memory Supported, Intel Boot Guard |
| PERFORMANCE |
|---|
| Number of Cores | 6-core | 6-core |
|---|---|---|
| Number of Threads | 6 threads | 6 threads |
| Clock Speed (Frequency) | 2.8 GHz | 1.8 GHz |
| Max Turbo Speed | 4 GHz | 3.4 GHz |
| CACHE MEMORY |
|---|
| Cache | 9 MB | 9 MB |
|---|---|---|
| Cache Memory Details | 9 MB | Smart Cache - 9 MB |
| INTEGRATED GRAPHICS (GPU) | Intel Core i5 8400 (8th Gen) | Intel Core i5 9400T (9th Gen) |
|---|
| Type | Intel UHD Graphics 630 | Intel UHD Graphics 630 |
|---|---|---|
| Base Frequency | 350 MHz | 350 MHz |
| Max Dynamic Frequency | 1.05 GHz | 1.05 GHz |
| Max Supported Memory Size | 64 GB | 64 GB |
| Max Supported Resolution | 4096x2304@24Hz (HDMI), 4096x2304@60Hz (eDP), 4096x2304@60Hz (DP) | 4096x2304@24Hz (HDMI), 4096x2304@60Hz (eDP), 4096x2304@60Hz (DP) |
| Features | Intel Clear Video Technology, Intel Clear Video HD Technology, InTRU 3D Technology, Intel Quick Sync Video, Triple Display Capable | Intel Clear Video Technology, Intel Clear Video HD Technology, InTRU 3D Technology, Intel Quick Sync Video, Triple Display Capable |
| MISCELLANEOUS | Intel Core i5 8400 (8th Gen) | Intel Core i5 9400T (9th Gen) |
|---|
| Service & Support | Limited warranty - replacement - 3 years | - |
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