Intel Core i9-12900E vs Intel Core i9-9960X Comparison

FAQ

Q: Which processor has more cores and threads?

A: Both CPUs have 16 cores, but the Intel Core i9-9960X has 32 threads while the Intel Core i9-12900E has 24 threads. The 9960X uses a symmetric 16-core/32-thread layout, whereas the 12900E's Alder Lake design mixes performance and efficiency cores, which reduces the total thread count.

Q: How does the single-core performance compare?

A: The Intel Core i9-12900E wins the single-core Geekbench test with a score of 1775 versus 1396 for the 9960X, a 21.4% advantage. However, in Cinebench R23 single-core, the 9960X scores 3546 versus 3321 for the 12900E, a 6.8% lead for the older chip. The results vary by benchmark.

Q: Which CPU has the higher boost clock?

A: The Intel Core i9-12900E boosts to 5.00 GHz, while the Intel Core i9-9960X boosts to 4.50 GHz. The 12900E also has a lower base clock at 2.30 GHz compared to 3.10 GHz on the 9960X.

Q: What memory types does each processor support?

A: The Intel Core i9-9960X supports DDR4 with a quad-channel memory bus. The Intel Core i9-12900E supports both DDR4 and DDR5, but uses a dual-channel memory bus. The 9960X has a documented memory bandwidth of 85.3 GB/s.

Q: Do both processors have integrated graphics?

A: No. The Intel Core i9-12900E includes UHD Graphics 770. The Intel Core i9-9960X has no integrated graphics listed in the database, so a discrete GPU is required for display output.

Q: What are the production statuses of these two CPUs?

A: The Intel Core i9-9960X is end-of-life, having been released in 2018. The Intel Core i9-12900E is active, with a release date in 2022. The 12900E also uses a smaller 10 nm process node compared to the 14 nm node of the 9960X.

Where Each One Wins

The Intel Core i9-9960X takes the majority of benchmark victories, winning 7 out of 8 head-to-head tests. Its wins are consistent across the Cinebench suite, covering R15, R20, and R23 in both multi-core and single-core runs. The margins are uniform at 6.8% to 6.9% for all Cinebench tests. In Geekbench multi-core, it also wins, but by a smaller 2.3% margin. This makes the 9960X the stronger choice for rendering workloads and heavily threaded applications where Cinebench-style performance matters.

The Intel Core i9-12900E wins only one head-to-head test, but it is a significant one. Its Geekbench single-core score of 1775 beats the 9960X by 21.4%. This suggests the 12900E has an advantage in lightly threaded tasks that rely on single-core responsiveness, even though its Cinebench single-core scores are lower. The 12900E also carries integrated graphics, which the 9960X lacks, making it a more self-contained option for systems without a discrete GPU.

Architecture Differences

The two processors come from different architectural eras. The Intel Core i9-9960X uses the Skylake architecture, specifically the Skylake-X codename, built on a 14 nm process node with a die size of 484 mm². The Intel Core i9-12900E uses the Alder Lake architecture, codename Alder Lake-S, built on a 10 nm process node with a die size of 215 mm². The 12900E's die is less than half the size of the 9960X's, a direct result of the newer manufacturing process.

Cache layouts differ substantially. The 9960X has 64 KB of L1 cache per core, 1 MB of L2 per core, and 22 MB of shared L3. The 12900E has 80 KB of L1 per core, 1.25 MB of L2 per core, and 30 MB of shared L3. The 12900E has more cache at every level.

PCIe support also diverges. The 9960X offers PCIe Gen 3 with 44 lanes from the CPU, while the 12900E provides PCIe Gen 5 with 20 lanes. The 12900E's PCIe generation is newer, but the 9960X has more than double the lane count.

The 12900E includes UHD Graphics 770 integrated graphics, while the 9960X has none. The 12900E also supports both DDR4 and DDR5 memory, whereas the 9960X is limited to DDR4. Memory bus width differs too: the 9960X uses quad-channel memory, the 12900E uses dual-channel.

Specification Differences

The most obvious difference is socket compatibility. The Intel Core i9-9960X uses Intel Socket 2066, while the Intel Core i9-12900E uses Intel Socket 1700. These are not interchangeable, so motherboard choice is dictated entirely by which CPU is selected.

Thread counts differ despite equal core counts. The 9960X has 32 threads, the 12900E has 24. Clock speeds also differ: the 9960X has a base clock of 3.10 GHz and a boost clock of 4.50 GHz, while the 12900E has a base clock of 2.30 GHz and a boost clock of 5.00 GHz.

Thermal design power is heavily skewed. The 9960X has a TDP of 165 watts, while the 12900E has a TDP of 65 watts. That is a 100-watt gap, which has real implications for cooler selection and system power delivery.

Memory support sees the 9960X locked to DDR4 with a quad-channel bus and 85.3 GB/s bandwidth. The 12900E supports both DDR4 and DDR5 but only through a dual-channel bus, and the database does not list a bandwidth figure for it.

The 12900E has integrated graphics (UHD Graphics 770), the 9960X does not. Production status also differs: the 9960X is end-of-life, the 12900E is active. The 9960X launched with an MSRP of $1684, while the 12900E launched with an MSRP of $494.

Head-to-Head Benchmarks

The Cinebench results are remarkably consistent. In Cinebench R15 multi-core, the 9960X scores 2532 against 2371 for the 12900E, a 6.8% lead. In Cinebench R15 single-core, the 9960X scores 357 against 334, a 6.9% lead. The pattern repeats in Cinebench R20: multi-core is 10550 versus 9882, and single-core is 1489 versus 1394, both 6.8% in favor of the 9960X. Cinebench R23 shows the same story: multi-core is 25120 versus 23529, and single-core is 3546 versus 3321, again 6.8% to the 9960X.

Geekbench tells a split story. In Geekbench multi-core, the 9960X scores 10512 against 10280 for the 12900E, a 2.3% win. But in Geekbench single-core, the 12900E reverses the trend with a score of 1775 against 1396, a 21.4% victory. That is the largest margin in either direction across all tests.

The broader database context is worth noting. The 9960X holds a 63rd percentile ranking among all CPUs, with an average benchmark score of 6938. Its nearest rivals include the AMD Ryzen 3 3200G at 6931 (0.1% behind), the Intel Pentium Gold G6400 at 6969 (0.4% ahead), the Intel Core i5-3470 at 6906 (0.5% behind), and the Intel Xeon W-2195 at 6892 (0.7% behind). The 12900E sits at the 62nd percentile with an average score of 6611. Its nearest rivals are the Intel Pentium Gold G6405 at 6605 (0.1% behind), the Intel Core i9-10940X at 6605 (0.1% behind), the Intel Core i5-13500E at 6586 (0.4% behind), and the Intel Core i5-13400E at 6638 (0.4% ahead).

The Cinebench consistency suggests the 9960X's higher thread count and higher base clock give it a sustained advantage in rendering tasks. The 12900E's single Geekbench single-core win is significant, but it does not translate into Cinebench single-core success, where it trails by 6.8%.

The Verdict

The Intel Core i9-9960X is the stronger performer in the database's recorded benchmarks. It wins 7 of 8 head-to-head tests, including all six Cinebench runs and Geekbench multi-core. For anyone running Cinebench-style workloads, rendering, or other heavily threaded applications, the 9960X delivers consistently higher scores, with margins of 6.8% across the Cinebench suite and 2.3% in Geekbench multi-core. Its 32 threads and quad-channel memory bandwidth of 85.3 GB/s support that result.

The Intel Core i9-12900E is not without merits. Its Geekbench single-core score is 21.4% higher, which points to better performance in certain single-threaded tasks. It also brings modern platform features: PCIe Gen 5, DDR5 memory support, a smaller 10 nm process node, 30 MB of shared L3 cache, and integrated UHD Graphics 770. Its 65-watt TDP is far lower than the 9960X's 165-watt TDP, which makes it easier to cool and more power-efficient in a compact system.

The choice depends on workload priorities. If the task is multi-threaded rendering, the 9960X is the clear winner based on the recorded benchmark data. If the task is single-threaded responsiveness, the 12900E's Geekbench advantage makes it appealing, and its integrated graphics and active production status add practical value for a new build. The 9960X is end-of-life, so availability may be limited, while the 12900E remains an active product. The 12900E also carries a much lower launch MSRP, but the benchmark data shows the 9960X still holds the performance edge in the majority of tests.