Intel Core i9-12900TE vs Intel Core i9-9900X Comparison

Head-to-Head Benchmarks

The benchmark data presents a clear, consistent picture: the Intel Core i9-9900X wins every recorded head-to-head test against the Intel Core i9-12900TE. Across all six Cinebench comparisons, the 9900X holds a nearly uniform advantage of roughly 5% in every discipline. In Cinebench R15 multicore, the 9900X scores 1851 against 1759 for the 12900TE, a 5.2% lead. The single-core R15 test shows the same margin, 261 versus 248, again 5.2% ahead. This consistency is notable because it spans both synthetic multi-threaded workloads and single-threaded tasks, indicating the older processor’s raw clock advantage is not offset by the newer chip’s architectural improvements in these specific tests.

Moving to Cinebench R20, the pattern holds. The 9900X posts 7713 in multicore versus 7333 for the 12900TE, a 5.2% win. In single-core, 1088 versus 1035 gives the 9900X a 5.1% margin. Cinebench R23 repeats the theme: the 9900X scores 18365 in multicore compared to 17461, and 2592 in single-core versus 2465, both representing a 5.2% advantage. The data shows zero test wins for the 12900TE across the entire head-to-head set. The 9900X takes all six recorded comparisons, with the narrowest margin being that 5.1% single-core R20 result.

What makes this more striking is the context from the database’s nearest rival data. The 9900X has an average benchmark score of 5301, placing it in the 60th percentile of all CPUs. Its closest rivals include the AMD Ryzen Threadripper 1920X at 5306 (a 0.1% difference), the AMD EPYC 7281 at 5315 (0.3% higher), the Intel Core i9-10900KF at 5316 (0.3% higher), and the Intel Core i9-13900TE at 5342 (0.8% higher). The 12900TE, meanwhile, averages 5050, also in the 60th percentile, with its nearest rivals being the Intel Core i9-9820X at 5049 (effectively tied), the Intel Xeon Gold 6334 at 5043 (0.1% behind), the AMD Ryzen 7 PRO 5750GE at 5070 (0.4% higher), and the Intel Xeon W-2155 at 5072 (0.4% higher). So while the 9900X leads the 12900TE by about 5% in the direct comparisons, the broader database shows both chips sitting in the same performance tier, with the 9900X’s average score about 5% higher than the 12900TE’s.

Where Each One Wins

The 9900X wins in every measured benchmark category. This includes both the multi-core and single-core variants of Cinebench R15, R20, and R23, as well as the Geekbench tests where only the 9900X has recorded scores. The 9900X’s Geekbench multicore score is 9109 and single-core is 1429, figures that place it well within its established performance envelope. The 12900TE has no Geekbench entries in the database, so no direct comparison is possible there, but the absence of data means the 9900X is the only one of the two with a verified record in that suite.

In terms of use cases, the 9900X’s consistent multicore lead across all three Cinebench versions suggests it is the better choice for heavily threaded rendering workloads, where the 5.2% margin in R15, R20, and R23 multicore tests translates into measurable time savings. The single-core results, while also favoring the 9900X, show a similar 5% edge, meaning even lightly threaded applications like legacy productivity tools or older games would see a slight advantage on the 9900X. The 12900TE, despite having 16 cores and 24 threads versus the 9900X’s 10 cores and 20 threads, cannot overcome the 9900X’s higher base clock of 3.50 GHz and boost clock of 4.50 GHz in these tests. The 12900TE’s base clock is listed as 1100.00 MHz, which is 1.10 GHz, a very low figure characteristic of a low-power part, and its boost clock of 4.80 GHz is higher than the 9900X’s, but the measured results still favor the older chip.

The production status is also worth noting. The 9900X is end-of-life, while the 12900TE is active. For new system builds, the 12900TE has the advantage of ongoing availability, but the recorded data does not show it winning a single benchmark. The 9900X’s integrated graphics are listed as null, meaning it has none, while the 12900TE includes UHD Graphics 770. This is a functional advantage for the 12900TE in systems without a discrete GPU, though it does not appear in the benchmark comparisons.

Architecture Differences

The two processors come from different architectural eras. The 9900X is built on Skylake, specifically the Skylake-X codename, using Intel’s 14 nm process node. It is part of the Core i9 X-Series 9th Generation lineup, designed for the Intel Socket 2066 platform. The 12900TE uses Alder Lake, codename Alder Lake-S, on a 10 nm node, and belongs to the Core 12th Generation series on Intel Socket 1700. The 12900TE has a smaller die size at 215 mm², while the 9900X does not have a listed die size.

Core and thread counts differ substantially. The 9900X has 10 cores and 20 threads, while the 12900TE has 16 cores and 24 threads. The 12900TE therefore offers 60% more cores and 20% more threads, yet the benchmark results show the 9900X still leads in every test. This is likely explained by clock speeds and power characteristics. The 9900X has a base clock of 3.50 GHz and a boost clock of 4.50 GHz, with a TDP of 165 W. The 12900TE has a base clock of 1100.00 MHz (1.10 GHz) and a boost clock of 4.80 GHz, with a TDP of only 35 W. The 12900TE’s extremely low base clock, likely set to meet a strict power envelope, hampers sustained all-core performance, while the 9900X’s higher base clock and much higher TDP allow it to maintain stronger performance in the recorded tests.

Cache layouts also differ. The 9900X has 64 KB of L1 cache per core, 1 MB of L2 per core, and 19.25 MB of shared L3. The 12900TE has 80 KB of L1 per core, 1.25 MB of L2 per core, and 30 MB of shared L3. The newer chip has more cache per core and a larger L3 pool, but this does not translate into benchmark wins. Memory support diverges as well: the 9900X uses DDR4 with a quad-channel memory bus and a listed memory bandwidth of 85.3 GB/s, while the 12900TE supports both DDR4 and DDR5 with a dual-channel memory bus and no listed bandwidth figure. The 9900X’s quad-channel setup provides a theoretical bandwidth advantage, though the database does not include memory benchmarks to confirm real-world impact.

PCIe capabilities favor the 12900TE in generation but the 9900X in lane count. The 9900X offers PCIe Gen 3 with 44 lanes (CPU only), while the 12900TE offers PCIe Gen 5 with 20 lanes (CPU only). For multi-GPU or high-density expansion setups, the 9900X’s 44 lanes are a significant advantage, while the 12900TE’s Gen 5 support offers higher per-lane bandwidth for newer devices. Neither processor supports ECC memory. The 12900TE includes integrated UHD Graphics 770, while the 9900X has no integrated graphics. Both have unlocked multipliers, allowing overclocking, and both are Intel parts. The 9900X was released on 2018-10-18 with a launch MSRP of $989, while the 12900TE was released on 2022-01-03 with a launch MSRP of $494. The 9900X is end-of-life; the 12900TE remains active.

The Verdict

Based strictly on the recorded benchmarks, the Intel Core i9-9900X is the faster processor. It wins all six head-to-head Cinebench tests with margins between 5.1% and 5.2%, and it holds a higher average benchmark score of 5301 compared to the 12900TE’s 5050. The 9900X also has a higher base clock and a much higher TDP, which likely explains its sustained performance advantage. Buyers who prioritize raw measured performance in rendering and single-threaded tasks should choose the 9900X, provided they can work within its end-of-life status, its lack of integrated graphics, and its older Socket 2066 platform.

The 12900TE, however, is not without merit in the database. It is an active product with a newer architecture, a 10 nm node, support for DDR5, PCIe Gen 5, and integrated UHD Graphics 770. It also has a dramatically lower TDP of 35 W versus 165 W, which makes it far more suitable for power-constrained or compact systems. Its 16 cores and 24 threads offer more parallel resources on paper, and its larger L3 cache of 30 MB could benefit certain workloads not captured in the benchmark suite. For users who need an actively produced chip with modern platform features and low power consumption, the 12900TE is the logical pick, accepting a roughly 5% performance deficit in the measured tests. For users who simply want the fastest CPU in these two, the data points squarely at the 9900X.

FAQ

Q: Which processor wins more benchmark tests in the database?

A: The Intel Core i9-9900X wins all six recorded head-to-head tests against the Intel Core i9-12900TE, with margins ranging from 5.1% to 5.2%.

Q: What is the average benchmark score difference between the two?

A: The 9900X has an average benchmark score of 5301, while the 12900TE averages 5050, a difference of roughly 5% in favor of the 9900X.

Q: Does the 12900TE have more cores than the 9900X?

A: Yes, the 12900TE has 16 cores and 24 threads, while the 9900X has 10 cores and 20 threads, yet the 9900X still leads in every recorded benchmark.

Q: What are the TDP ratings for each processor?

A: The 9900X has a TDP of 165 W, while the 12900TE has a much lower TDP of 35 W.

Q: Does either processor include integrated graphics?

A: Only the 12900TE has integrated graphics, specifically UHD Graphics 770; the 9900X lists no integrated graphics.

Q: What are the launch MSRP values for these CPUs?

A: The 9900X had a launch MSRP of $989, while the 12900TE had a launch MSRP of $494.