Intel Core i9-13900KS vs Intel Core i9-13900T Comparison

Where Each One Wins

The data paints an unusually clear picture: the Intel Core i9-13900KS wins every single head-to-head benchmark recorded in the database, 17 wins to zero for the Intel Core i9-13900T. This is not a case of one chip edging out the other in specific workloads; the gap is systematic and consistent across every tested category.

The i9-13900KS dominates in all threaded workloads, from lightly threaded tasks to fully saturated multi-core scenarios. The single-thread PassMark result shows a modest 12.8% advantage, which is the smallest delta between the two parts. That narrow margin in pure single-thread performance suggests the architectural cores themselves are similar, but the KS pulls ahead due to higher sustained clocks. The multi-threaded PassMark result tells a different story: a 40.9% advantage, indicating the KS can maintain its performance lead when all cores are active.

The i9-13900T, by contrast, does not win any recorded benchmark. Its value lies elsewhere: the 35W TDP against the KS's 150W TDP. The T is designed for constrained thermal environments where the KS would require substantial cooling. The data shows the T is still a capable 24-core, 32-thread processor, but it consistently trails the KS by roughly 40% in most heavy workloads. For users who need maximum throughput regardless of power envelope, the KS is the clear choice; for those who prioritize lower power draw in a compact system, the T offers most of the core count with significant performance concessions.

Architecture Differences

Both processors share the same fundamental architecture: Raptor Lake on Intel's 10 nm process, with a die size of 257 mm². They belong to the same Core 13th Gen series, both using the Raptor Lake-S codename. The core configuration is identical: 24 cores, 32 threads, with an 80 KB L1 cache per core, 2 MB L2 per core, and 36 MB shared L3 cache. Both support DDR4 and DDR5 memory in a dual-channel configuration, both feature ECC memory support, and both integrate UHD Graphics 770. PCIe connectivity is identical as well: Gen 5 with 20 lanes from the CPU.

The differentiating factors are clock speeds, power limits, and unlock status. The i9-13900KS has a base clock of 3.20 GHz and a boost clock of 6.00 GHz, with a 150W TDP. The i9-13900T has a base clock of 1100.00 MHz (note the unusual high base value in the data, which appears as a placeholder or a reporting quirk; the boost clock is 5.30 GHz) and a 35W TDP. The TDP difference is the most significant architectural distinction in practice: the T is a low-power variant designed to fit into thermally constrained systems, while the KS is the flagship enthusiast part with a much higher power budget.

The multiplier is unlocked on the KS, allowing user overclocking, while the T has a locked multiplier. This means the KS's already higher boost clock can be pushed further, though the database does not include overclocked benchmark results. The release dates differ slightly: the T launched on 2023-01-03, and the KS on 2023-01-11. The KS has a part number (SRMBX) recorded, while the T does not.

Memory bandwidth is listed only for the KS at 89.6 GB/s; the T's memory bandwidth field is null in the database. Both processors support the same memory types and bus width, so the practical difference likely stems from the KS's higher clocks enabling faster memory access, but the database does not provide a comparable figure for the T.

Head-to-Head Benchmarks

The Cinebench results show a remarkably consistent pattern. Across all three versions (R15, R20, R23) and both single-core and multi-core tests, the KS leads by 40.6% to 40.7%. For example, in Cinebench R23 multi-core, the KS scores 51368 against the T's 36517, a 40.7% advantage. In single-core R23, the KS scores 7252 versus 5155, again 40.7%. The consistency of this delta across different Cinebench versions suggests the clock frequency advantage translates uniformly across the rendering workload.

PassMark results show a wider spread of deltas. The smallest gap is in single-thread performance: 4712 versus 4177, a 12.8% advantage for the KS. This is notable because it indicates the T's single-core performance is relatively closer to the KS than its multi-core performance. The largest gap appears in extended instructions: 48217 versus 29719, a 62.2% advantage. This suggests the KS benefits disproportionately from SIMD or AVX workloads, likely due to higher sustained boost clocks under instruction-heavy loads.

Data compression shows a 51.4% advantage for the KS (814838 versus 538254), while integer math shows the smallest multi-core gap at 34.1% (211027 versus 157324). Floating-point math sits at 42.3% (154805 versus 108779), and random string sorting at 42.5% (90257 versus 63358). Data encryption shows a 38.8% advantage (47772 versus 34415), and prime number finding shows 46.9% (257 versus 175). Physics simulation shows 37.8% (3441 versus 2497).

The aggregate picture is clear: the KS leads by roughly 35% to 45% in most compute-heavy tasks, with single-thread performance being the only category where the gap narrows below 20%. The T's power efficiency does not translate into competitive performance in any recorded benchmark.

FAQ

Q: How much faster is the Intel Core i9-13900KS in multi-core workloads?

A: In Cinebench R23 multi-core, the KS scores 51368 against the T's 36517, a 40.7% advantage. PassMark multi-thread shows a 40.9% advantage (60644 versus 43036).

Q: Is the single-thread performance gap smaller than the multi-thread gap?

A: Yes. The PassMark single-thread test shows the KS at 4712 versus the T at 4177, a 12.8% advantage. In contrast, most multi-core tests show deltas between 34.1% and 62.2%.

Q: What is the TDP difference between these two processors?

A: The i9-13900KS has a 150W TDP, while the i9-13900T has a 35W TDP. This is the largest specification gap between the two parts.

Q: Do both processors have the same core and cache configuration?

A: Yes. Both have 24 cores, 32 threads, 80 KB L1 per core, 2 MB L2 per core, and 36 MB shared L3 cache. The architecture, process node, and die size are also identical.

Q: Can the i9-13900T be overclocked?

A: No. The T has a locked multiplier, while the KS has an unlocked multiplier. The KS also has a higher boost clock of 6.00 GHz compared to the T's 5.30 GHz.

Q: Which processor has a higher average benchmark score?

A: The KS has an average benchmark score of 64051, while the T has 61723. The KS ranks in the 93rd percentile of all CPUs, and the T ranks in the 92nd percentile.

The Verdict

The data leaves no ambiguity: the Intel Core i9-13900KS is the superior processor in every recorded benchmark. It wins all 17 head-to-head comparisons, with deltas ranging from 12.8% in single-thread PassMark to 62.2% in extended instructions. The KS achieves this through a 6.00 GHz boost clock, a 150W TDP, and an unlocked multiplier, all of which enable higher sustained performance across every workload category.

The Intel Core i9-13900T, while not winning any benchmark, occupies a distinct niche. Its 35W TDP is a fraction of the KS's 150W, making it suitable for systems where power consumption and heat output are primary constraints. The T still offers the same 24 cores and 32 threads, and its single-thread performance is within 12.8% of the KS, which is a respectable showing for a low-power part. Its average benchmark score of 61723 places it in the 92nd percentile of all CPUs, barely behind the KS's 64051 (93rd percentile).

The choice depends entirely on the use case. For maximum performance, rendering, content creation, or any compute-intensive workload where power draw is not a concern, the KS is the obvious pick. For a compact or passively cooled system, or any scenario where the 35W TDP is a hard requirement, the T provides most of the core count and a surprisingly competitive single-thread performance, albeit with significantly lower multi-core throughput. The database shows no scenario where the T outperforms the KS, so the decision rests on power constraints rather than raw performance.