Intel Core i9-11900KB vs Intel Core i9-13900TE Comparison

The Intel Core i9-11900KB and the Intel Core i9-13900TE make for one of the stranger matchups in the database: an end-of-life mobile Tiger Lake-H part cleanly sweeping a newer, larger Raptor Lake-S desktop chip across every recorded Cinebench test. Despite the 13900TE carrying three times the core count, the recorded data shows the older 8-core mobile processor winning all six head-to-head benchmarks by a remarkably consistent margin of roughly 4.6 to 4.7 percent. This page walks through the numbers, the architectural gaps, and what the data implies about who should pick which.

Head-to-Head Benchmarks

The sweep is total. The i9-11900KB wins every single test in the head-to-head set, and the margins barely move from one benchmark generation to the next, which is itself interesting.

In Cinebench R15, the 11900KB posts a multi-core score of 1946 against 1861 for the 13900TE, a 4.6 percent win, and a single-core score of 274 against 262, also 4.6 percent in its favor. Cinebench R20 tells the same story: 8112 versus 7758 multi-core (4.6 percent) and 1145 versus 1094 single-core (4.7 percent). By Cinebench R23 the pattern holds without deviation: 19316 versus 18472 in multi-core, a 4.6 percent gap, and 2727 versus 2607 in single-core, again 4.6 percent.

What does that consistency imply? A uniform gap across single-core and multi-core tests suggests the 11900KB's advantage is not about thread count or scheduling, since the 13900TE's 32 threads never translate into a multi-core win. Instead, the data points to per-thread throughput as the deciding factor: the 11900KB boosts to 5.30 GHz versus 5.00 GHz for the 13900TE, and it wins single-core by nearly the same margin as multi-core everywhere. The 13900TE's massive thread advantage appears to be throttled by its 35 W TDP classification, while the 65 W mobile part sustains higher clocks under load.

Context from the percentile fields reinforces how close these two really are. The 11900KB sits at the 61st percentile versus all CPUs in the database; the 13900TE sits at the 60th. Their average benchmark scores, 5587 and 5342 respectively, differ by about 4.6 percent, matching the head-to-head results almost exactly.

The rivalry lists add an intriguing wrinkle. The 11900KB's nearest rivals include the Intel Atom x7433RE (average score 5601, 0.2 percent above it), the Intel Core i7-12700T (5606, 0.3 percent above), and the AMD Ryzen 7 PRO 3700 (5610, 0.4 percent above), while it edges the Intel Celeron G6900 (5561) by 0.5 percent. The 13900TE, meanwhile, clusters against the Intel Core i9-10900KF (5316), the AMD EPYC 7281 (5315), the AMD Ryzen Threadripper 1920X (5306), and the Intel Core i9-9900X (5301), all within roughly a percentage point. A 24-core desktop chip benchmarking alongside older HEDT and server parts, and losing to an 8-core mobile chip, raises real questions about how power limits shape these results.

Architecture Differences

On paper, the 13900TE looks like the far bigger machine. It is built on the Raptor Lake architecture (codename Raptor Lake-S) with 24 cores and 32 threads, sitting on Intel Socket 1700 as an active desktop product released on 2023-01-03. The 11900KB is a Tiger Lake-H mobile processor with 8 cores and 16 threads on Intel BGA 1787, flagged as end-of-life. Both are fabbed by Intel on a 10 nm process node, so the manufacturing node is a wash here; the difference is design generation and, critically, power.

Cache tells part of the story. Both share the same 80 KB L1 per core, but the 13900TE carries 2 MB of L2 per core and 36 MB of shared L3, versus 1.25 MB per core and 24 MB of shared L3 on the 11900KB. The Raptor Lake chip also has the larger die at 257 mm² against 190 mm². Yet none of that extra cache translates into a benchmark win, which again points to the 35 W TDP of the TE variant as the limiting factor against the 65 W mobile part.

Platform features diverge meaningfully. The 13900TE supports both DDR4 and DDR5 memory on a dual-channel bus, while the 11900KB supports DDR4 only, with a recorded memory bandwidth of 51.2 GB/s. The 11900KB offers PCIe Gen 4 with 20 CPU lanes; the 13900TE offers fewer CPU lanes at 16, but steps up to PCIe Gen 5. ECC memory is supported on the 13900TE and not on the 11900KB, a meaningful distinction for workstation duty. Integrated graphics differ slightly: UHD Graphics 750 on the 11900KB versus UHD Graphics 770 on the 13900TE. Finally, the 11900KB has an unlocked multiplier; the 13900TE does not, removing any possibility of recovering the performance gap through overclocking.

The Verdict

Strictly from the recorded data, the i9-11900KB is the faster processor in every benchmark measured, by 4.6 to 4.7 percent, in both single-core and multi-core workloads. If raw throughput in rendering-style tasks is the only criterion, the 11900KB wins, full stop.

But the verdict is not that simple, and the data invites skepticism about longevity and platform. The 11900KB is end-of-life, soldered to a BGA 1787 mobile board, DDR4-only, and lacks ECC. The 13900TE is an active desktop product on Socket 1700 with DDR5 support, PCIe Gen 5, and ECC, meaning it fits into a far more modern and serviceable platform even while benchmarking slightly slower. A 4.6 percent deficit that is consistent across every test reads as a clock-speed limitation of a low-power variant, not an architectural deficit of Raptor Lake itself.

Pick the 11900KB if the priority is maximum measured performance in an existing mobile system. Pick the 13900TE if the priority is a current, upgradeable desktop platform where a small benchmark deficit is acceptable in exchange for DDR5, Gen 5 connectivity, and ECC. The 11900KB carried a launch MSRP of $539; no launch MSRP is recorded for the 13900TE, so no cost comparison is possible from this data.

FAQ

Q: Which CPU wins more benchmarks in the recorded head-to-head data?

A: The Intel Core i9-11900KB wins all six recorded Cinebench tests, single-core and multi-core alike. The 13900TE wins none.

Q: How large is the performance gap between them?

A: Remarkably uniform: 4.6 percent in five of the six tests and 4.7 percent in Cinebench R20 single-core, always in the 11900KB's favor.

Q: Why does the 24-core 13900TE lose in multi-core tests?

A: The data does not state a cause directly, but the pattern is telling. Its 35 W TDP is far below the 11900KB's 65 W, and its lower 5.00 GHz boost versus 5.30 GHz matches the near-identical single-core and multi-core deficits, suggesting heavily power-limited operation.

Q: Do the two chips use different manufacturing processes?

A: No. Both are produced by Intel on a 10 nm process node. The differences are architectural (Tiger Lake-H versus Raptor Lake-S) and in power allocation, not in node.

Q: Which processor supports ECC memory?

A: The i9-13900TE supports ECC; the i9-11900KB does not.

Q: Can either chip be overclocked to change these results?

A: Only the i9-11900KB has an unlocked multiplier. The 13900TE's multiplier is locked, so its recorded deficit cannot be closed that way.

Where Each One Wins

The 11900KB's wins are pure benchmark throughput. It is the choice where the recorded score matters: rendering, and by extension any sustained floating-point workload resembling the Cinebench suite, where its 4.6 percent edge holds in both single-threaded and multi-threaded runs. Its higher 5.30 GHz boost and unlocked multiplier suit scenarios where peak per-thread speed dominates.

The 13900TE's wins are structural rather than score-based. With 24 cores and 32 threads, 36 MB of shared L3, and 2 MB of L2 per core, it offers far more hardware for workloads that scale with resources rather than clocks, even if this particular low-power variant cannot demonstrate it in the recorded tests. Its DDR5 support, PCIe Gen 5 lanes, ECC capability, and active production status on Socket 1700 make it the stronger fit for a platform that must remain serviceable and memory-reliable over time. The 11900KB, end-of-life and BGA-mounted, is effectively locked into whatever system it already inhabits.

Specification Differences

• Cores and threads: 11900KB has 8 cores and 16 threads; 13900TE has 24 cores and 32 threads.
• Base clock: 11900KB at 3.30 GHz; 13900TE recorded at 1000.00 in the database.
• Boost clock: 11900KB at 5.30 GHz; 13900TE at 5.00 GHz.
• TDP: 11900KB at 65 W; 13900TE at 35 W.
• Socket: Intel BGA 1787 (11900KB) versus Intel Socket 1700 (13900TE).
• Architecture: Tiger Lake-H (11900KB) versus Raptor Lake-S (13900TE); 11th Gen versus 13th Gen Core series.
• Die size: 190 mm² versus 257 mm².
• L2 cache: 1.25 MB per core versus 2 MB per core; L3: 24 MB shared versus 36 MB shared.
• Memory: DDR4 only (11900KB) versus DDR4 and DDR5 (13900TE); both dual-channel; bandwidth of 51.2 GB/s recorded only for the 11900KB.
• ECC: not supported (11900KB) versus supported (13900TE).
• PCIe: Gen 4 with 20 CPU lanes versus Gen 5 with 16 CPU lanes.
• Integrated graphics: UHD Graphics 750 versus UHD Graphics 770.
• Market segment and status: end-of-life mobile part versus active desktop part.
• Multiplier: unlocked (11900KB) versus locked (13900TE).
• Launch MSRP: $539 recorded for the 11900KB; none recorded for the 13900TE.