Intel Core i5-12400T

The Intel Core i5-12400T is a 6-core, 12-thread desktop processor from the Alder Lake-S family, built on Intel's 10 nm process. It operates with a base clock of 1800 MHz and a boost clock of 4200 MHz, and includes UHD Graphics 730 integrated. The data places it in the 60th percentile of all CPUs, with an average benchmark score of 4058, positioning it as a solid mid-range performer for everyday computing and moderate productivity workloads.

Benchmark Performance

The benchmark results for the Core i5-12400T show a consistent pattern across various rendering and general-purpose tests. In Cinebench R23, the processor scores 13413 points in multi-core and 1893 points in single-core. This multi-core figure represents a substantial portion of its overall capability, though the exact percentage split between single and multi-core performance is best understood through the R20 and R15 results, which show similar ratios. The R20 multi-core score is 5633, while single-core is 795, and the R15 scores are 1351 and 190 for multi-core and single-core, respectively.

Geekbench results indicate a multi-core score of 7144 and a single-core score of 2044. The average benchmark score across all tests is 4058, which serves as the reference point for comparing against its nearest rivals. The delta percentages from the nearest rivals are minimal, with the largest difference being 1.2% against the AMD Ryzen 5 PRO 4655G. This tight clustering means that in real-world applications, users would be hard-pressed to notice a performance difference between these processors without carefully controlled benchmarking.

When interpreting the raw scores, the Cinebench R23 multi-core result of 13413 suggests a capable processor for tasks like video encoding or 3D rendering, though it is not in the high-end tier. The single-core score of 1893 in R23 indicates strong per-thread performance, which is critical for older software and lightly-threaded games. The Geekbench single-core score of 2044 reinforces this, showing the architecture’s efficiency on individual threads.

How It Compares

Intel Core i5-1240P: The 12400T is effectively tied with the i5-1240P, showing a delta of just 0.1% in favor of the 12400T. Both processors have the same average score range, with the 12400T at 4058 and the 1240P at 4056. This indicates that despite any architectural differences, the real-world performance in mixed workloads is nearly identical, making the choice between them depend on platform features rather than raw speed.

AMD Ryzen 7 PRO 2700X: The 12400T trails the Ryzen 7 PRO 2700X by a margin of -0.1%, with the AMD part scoring 4063. This is a negligible difference, placing the two processors in the same performance class. The 2700X is an older design, yet its 8-core configuration still holds its own against the newer 6-core Intel part, showing that core count can compensate for architectural efficiency in multi-threaded scenarios.

AMD Ryzen 5 PRO 4655G: The 12400T leads the Ryzen 5 PRO 4655G by 1.2%, with the Intel part scoring 4058 versus 4010. This is the largest gap among the nearest rivals, but still a small margin in practical terms. The 4655G includes integrated graphics similar to the 12400T, so users comparing these two would see the Intel part edge ahead in CPU-bound tasks while offering comparable platform features.

AMD Ryzen 7 PRO 5850U: The 12400T is behind the Ryzen 7 PRO 5850U by -1.2%, with the AMD part scoring 4109. This is the closest competitor in terms of absolute score, but the 5850U is a mobile processor, suggesting that the 12400T's desktop design delivers similar performance while potentially offering different power characteristics. The delta is small enough that thermal and platform considerations would outweigh the benchmark difference.

Single-Thread vs Multi-Thread Behavior

The split between single-thread and multi-thread performance reveals the 12400T's balanced design. In Cinebench R23, the ratio of multi-core (13413) to single-core (1893) is approximately 7.1x, which is typical for a 6-core/12-thread processor with efficient scaling. This means that applications which can utilize all threads will see a significant boost, while single-threaded workloads will still perform well due to the 4200 MHz boost clock.

For real-world workloads, this behavior implies that the processor handles mixed usage well. Office productivity, web browsing, and light coding benefit from the strong single-core score, while video editing, batch photo processing, and software compilation can take advantage of the multi-core headroom. The Geekbench results support this, with a multi-core score of 7144 that is 3.5x the single-core score of 2044, showing diminishing returns beyond a few threads but still solid scaling.

The base clock of 1800 MHz is notably low, but the boost clock of 4200 MHz is where the processor spends most of its active time under load. This wide frequency range suggests that the chip can be very power-efficient at idle or light loads, then ramp up quickly for bursty tasks. For users running sustained multi-threaded loads, the thermal solution will determine how long the processor can maintain boost clocks, but the benchmark data indicates consistent performance across repeated runs.

FAQ

Q: How does the Core i5-12400T perform in multi-core tasks compared to its closest rival?

A: The 12400T scores 13413 in Cinebench R23 multi-core. Its average score of 4058 is 0.1% ahead of the Intel Core i5-1240P and 1.2% ahead of the AMD Ryzen 5 PRO 4655G, but 1.2% behind the AMD Ryzen 7 PRO 5850U.

Q: What is the processor's single-core performance like?

A: In Cinebench R23 single-core, the 12400T scores 1893 points. The Geekbench single-core score is 2044. These results indicate strong per-thread performance, suitable for older applications and games that rely on fewer cores.

Q: Does this processor support overclocking?

A: No, the multiplier is locked (multiplierUnlocked is false). Users cannot adjust the clock multiplier beyond the factory settings, limiting manual overclocking capabilities.

Q: What integrated graphics does the 12400T include?

A: It includes UHD Graphics 730. This allows basic display output and hardware acceleration for video playback, but it is not intended for demanding gaming without a discrete GPU.

Q: How much cache does the processor have?

A: The L1 cache is 80 KB per core, the L2 cache is 1.25 MB per core, and the L3 cache is 18 MB shared across all cores. The total L3 is not listed separately, but the shared pool is accessible to all cores.

Q: What memory types are supported?

A: The processor supports both DDR4 and DDR5 memory in a dual-channel configuration. ECC memory is not supported. The memory bus is dual-channel, but specific bandwidth figures are not provided.

Power and Thermals

The Core i5-12400T has a TDP of 35 watts, which classifies it as a low-power desktop processor. This is significantly lower than standard desktop processors, which typically sit in the 65-watt or higher range. The low TDP means that a modest air cooler is sufficient for most use cases, and the processor can be cooled quietly in a compact chassis. The 35-watt envelope also makes it suitable for small form factor builds or systems where heat dissipation is a concern.

The low power draw does not necessarily translate to poor performance, as the benchmark scores show. The processor can still boost to 4200 MHz when needed, but it will likely sustain lower clocks under sustained all-core loads compared to a higher-TDP counterpart. Users planning to run heavy multi-threaded workloads for extended periods should ensure adequate airflow, but the thermal management is straightforward given the low heat output. The 10 nm process node contributes to the efficiency, allowing the chip to deliver competitive performance within a 35-watt power budget.

Platform and Compatibility

The 12400T uses the Intel Socket 1700, which is compatible with 12th generation Core processors. The architecture is Alder Lake, specifically the Alder Lake-S desktop variant. The processor supports both DDR4 and DDR5 memory, giving builders flexibility in choosing between older, more affordable memory and newer, faster options. The dual-channel memory bus is standard for this class, and the lack of ECC support means it is not aimed at workstation or server environments.

For expansion, the processor provides PCIe Gen 5 with 20 lanes available from the CPU. This allows for high-bandwidth connectivity to modern graphics cards and NVMe storage drives. The integrated UHD Graphics 730 provides basic display output, so a discrete GPU is not required for system operation, though it is recommended for gaming or graphics-intensive work. The production status is active, meaning the processor is still in current production, and the launch MSRP is $192, which positions it in the mid-range market segment.

The upgrade path is limited to other Socket 1700 processors from the same generation, as the platform does not support newer architectures. Users looking to upgrade later would need to replace the motherboard as well. The processor part number is SRL5X, and the die size is 163 mm², with the foundry being Intel itself. The generation is listed as Core i5 (Alder Lake-S), confirming its place in the 12th generation lineup.