Intel Core i9-10900E vs Intel Core i9-11900T Comparison

The Intel Core i9-10900E and the Intel Core i9-11900T are two very different interpretations of a low-power desktop flagship, both residing on the Intel Socket 1200 platform. The 10900E is a 10th Gen Comet Lake part with more cores, while the 11900T is an 11th Gen Rocket Lake part with a dramatically lower thermal envelope. Benchmark data reveals a fascinating split: the older 10900E dominates traditional rendering workloads, while the newer 11900T strikes back decisively in single-threaded and Geekbench tests. The overall average benchmark scores are nearly identical, with the 10900E scoring 4708 against the 11900T's 4685, a negligible 0.5% difference that masks significant architectural and performance divergences.

Head-to-Head Benchmarks

The Cinebench suite paints a consistent picture of victory for the Intel Core i9-10900E across all six of its wins. In Cinebench R15, the 10900E scores 1622 in multi-core and 228 in single-core, beating the 11900T's 1572 and 221 respectively, with a uniform 3.2% delta in both. This pattern repeats exactly in Cinebench R20, where the 10900E posts 6759 multi-core and 954 single-core, again outperforming the 11900T's 6550 and 924 by 3.2%. The margin holds steady in Cinebench R23 as well, with the 10900E reaching 16093 multi-core and 2272 single-core versus the 11900T's 15596 and 2201. The consistency of this 3.2% lead across all Cinebench versions suggests a fundamental advantage in sustained workload performance, likely stemming from the 10900E's higher core count and more conventional power delivery.

The narrative flips entirely when examining Geekbench results. The Intel Core i9-11900T wins the Geekbench multi-core test with a score of 8257, edging out the 10900E's 8162 by 1.2%. More dramatically, the single-core Geekbench test shows a massive 27% delta, with the 11900T scoring 2157 against the 10900E's 1575. This is not a marginal victory but a generational leap in per-thread performance. The 11900T's superior IPC from the Rocket Lake architecture completely overwhelms the 10900E's clock speed or core advantage in this specific benchmark. Interestingly, the 10900E wins Cinebench single-core tests by 3.2% while losing Geekbench single-core by 27%, indicating that these benchmarks measure very different aspects of CPU performance, with the 11900T clearly favoring Geekbench's workload characteristics.

The aggregate picture shows the 10900E taking 6 of 8 benchmark wins, yet the 11900T's Geekbench single-core victory is so substantial that it nearly evens out the average scores. The 10900E sits at the 59th percentile of all CPUs, while the 11900T is just behind at the 58th percentile. The nearest rival data confirms their closeness: the 10900E's rivals include the 11900T with a 0.5% positive delta, while the 11900T's rivals list the 10900E with a -0.5% delta. These two CPUs are effectively tied in overall performance, but they achieve that parity through completely different strengths and weaknesses.

Architecture Differences

The architectural divide between these two CPUs is substantial despite sharing the same 14 nm process node from Intel. The 10900E is built on the Comet Lake architecture with a die size of 206 mm², while the 11900T uses the Rocket Lake architecture with a significantly larger 276 mm² die. This size difference hints at the internal redesign, as Rocket Lake incorporates a newer core microarchitecture that delivers higher instructions per clock but requires more silicon area. Both CPUs use the same Intel Socket 1200, making them drop-in alternatives for compatible motherboards.

Core configurations diverge sharply. The 10900E offers 10 cores and 20 threads, while the 11900T is cut down to 8 cores and 16 threads. This two-core deficit for the 11900T is partially offset by its cache hierarchy, which provides 80 KB of L1 cache per core and 512 KB of L2 cache per core, compared to the 10900E's 64 KB and 256 KB per core respectively. However, the 10900E compensates with a larger 20 MB shared L3 cache versus the 11900T's 16 MB. The per-core cache increases in Rocket Lake likely contribute to its strong single-threaded performance, while the 10900E's larger L3 pool benefits its multi-core workloads.

Clock speeds tell a story of thermal priorities. The 10900E has a base clock of 2.80 GHz and a boost clock of 4.70 GHz, while the 11900T lists a base clock of 1500.00 MHz and a boost clock of 4.90 GHz. The 11900T's base clock is extraordinarily low, but its boost clock is 0.20 GHz higher than the 10900E's. This configuration allows the 11900T to hit a 35 W TDP, a stark contrast to the 10900E's 65 W TDP. The 11900T's strategy is to idle at very low frequencies and burst to high boosts for short periods, while the 10900E maintains a more moderate but sustained frequency range. This explains why the 11900T excels in short single-threaded bursts like Geekbench but falls behind in sustained Cinebench renders.

Memory and I/O also differ. The 10900E supports DDR4 with 46.9 GB/s bandwidth across a dual-channel bus, while the 11900T supports the same DDR4 dual-channel setup but with higher 51.2 GB/s bandwidth. PCIe connectivity shows a clear generational upgrade: the 10900E offers Gen 3 with 16 lanes from the CPU, while the 11900T provides Gen 4 with 20 lanes. Both lack ECC memory support and have locked multipliers. The integrated graphics differ as well, with the 10900E featuring UHD Graphics 630 and the 11900T featuring the newer UHD Graphics 750.

Where Each One Wins

The Intel Core i9-10900E is the clear winner for sustained multi-core rendering workloads. Across Cinebench R15, R20, and R23, it maintains a consistent 3.2% lead over the 11900T, both in multi-core and single-core variants of those tests. This suggests the 10900E is better suited for video rendering, 3D modeling, and other workloads that stress CPU cores for extended periods. The 10900E's higher 65 W TDP allows it to sustain its 4.70 GHz boost more freely, while its 10 cores and 20 threads provide additional parallel processing capacity that pays off in threaded applications. The larger 20 MB L3 cache also helps keep more data close to the cores during complex computations.

The Intel Core i9-11900T wins in Geekbench, particularly in single-core performance where its 27% delta advantage is overwhelming. The Rocket Lake architecture's higher IPC, combined with its 4.90 GHz boost clock, gives it a massive edge in lightly-threaded applications like web browsing, office productivity, and older software that relies heavily on single-thread performance. The 11900T's Gen 4 PCIe support and higher memory bandwidth of 51.2 GB/s also make it more future-proof for storage and GPU-intensive workloads that can leverage these faster interfaces. Geekbench multi-core also favors the 11900T by 1.2%, indicating its per-core efficiency can sometimes overcome its two-core disadvantage.

The thermal envelope is a decisive factor in specific use cases. The 11900T's 35 W TDP makes it suitable for compact systems with limited cooling, such as small form factor desktops or all-in-one machines. The 10900E's 65 W TDP requires more robust cooling but remains manageable for standard desktop configurations. The 10900E is still in active production, while the 11900T is marked as end-of-life, which could influence availability in new builds. The 10900E's launch MSRP is $488, while the 11900T's is $439, reflecting the 10900E's higher core count and more traditional positioning.

FAQ

Q: Which CPU performs better in Cinebench R23 multi-core?

A: The Intel Core i9-10900E scores 16093, which is 3.2% higher than the 11900T's 15596. This advantage holds across all Cinebench versions, from R15 to R23.

Q: How significant is the Geekbench single-core difference?

A: The 11900T achieves 2157 in Geekbench single-core versus the 10900E's 1575, a 27% delta. This is the largest performance gap between the two CPUs in any benchmark.

Q: What is the core and thread configuration difference?

A: The 10900E has 10 cores and 20 threads, while the 11900T has 8 cores and 16 threads. The 10900E also has a larger 20 MB L3 cache compared to the 11900T's 16 MB.

Q: Are these CPUs compatible with the same motherboards?

A: Yes, both use Intel Socket 1200. However, the 11900T supports PCIe Gen 4 with 20 lanes, while the 10900E is limited to PCIe Gen 3 with 16 lanes.

Q: Which CPU has a higher boost clock?

A: The 11900T boosts to 4.90 GHz, which is 0.20 GHz higher than the 10900E's 4.70 GHz boost. The 11900T also has a much lower base clock of 1500.00 MHz compared to the 10900E's 2.80 GHz.

Q: How do their overall average benchmark scores compare?

A: The 10900E averages 4708, while the 11900T averages 4685, a 0.5% difference. The nearest rival data confirms they are nearly identical in overall performance.

The Verdict

The data suggests a choice between core count and per-core efficiency. For users who prioritize sustained rendering performance, the Intel Core i9-10900E is the clear pick, as it wins all six Cinebench tests with a consistent 3.2% margin. Its 10 cores and 20 threads provide a tangible advantage in multi-threaded applications, and its 65 W TDP allows for more sustained boost behavior. The 10900E also remains in active production, ensuring ongoing availability.

For users who value single-threaded responsiveness and modern platform features, the Intel Core i9-11900T offers a compelling alternative. Its 27% Geekbench single-core victory is substantial, and its higher 4.90 GHz boost clock plus superior IPC make it ideal for everyday tasks and legacy software. The 11900T's 35 W TDP is remarkably efficient, and its PCIe Gen 4 support with 20 lanes provides better future-proofing for high-speed storage and graphics. However, its end-of-life status and 8-core limitation may give some buyers pause.

The 0.5% average score difference between these CPUs means most users will not notice a performance difference in general use. The decision ultimately hinges on workload patterns: rendering and multi-threaded productivity favor the 10900E, while single-threaded tasks and platform longevity favor the 11900T. The 11900T's higher memory bandwidth of 51.2 GB/s versus 46.9 GB/s also tips the balance for memory-sensitive applications. Neither CPU offers an unlocked multiplier, so overclocking is not a factor in this comparison.

Specification Differences

| Specification | Intel Core i9-10900E | Intel Core i9-11900T |

|---|---|---|

| Cores | 10 | 8 |

| Threads | 20 | 16 |

| Base Clock | 2.80 GHz | 1500.00 MHz |

| Boost Clock | 4.70 GHz | 4.90 GHz |

| TDP | 65 W | 35 W |

| Architecture | Comet Lake | Rocket Lake |

| Codename | Comet Lake | Rocket Lake |

| Die Size | 206 mm² | 276 mm² |

| L1 Cache | 64 KB (per core) | 80 KB (per core) |

| L2 Cache | 256 KB (per core) | 512 KB (per core) |

| L3 Cache | 20 MB (shared) | 16 MB (shared) |

| Memory Bandwidth | 46.9 GB/s | 51.2 GB/s |

| PCIe | Gen 3, 16 Lanes | Gen 4, 20 Lanes |

| Integrated Graphics | UHD Graphics 630 | UHD Graphics 750 |

| Production Status | Active | End-of-life |

| Release Date | 2020-04-29 | 2021-03-15 |

| Launch MSRP | $488 | $439 |

| Part Number | SRJFD | SRKNQ |