Intel Core i9-7980XE vs Intel Core i9-9960X Comparison

The Intel Core i9-7980XE and Intel Core i9-9960X are two Skylake-X flagships that look nearly identical on paper but diverge in core count and clock speed. Benchmark results show the 9960X wins six of eight head-to-head tests, yet the 7980XE takes the Geekbench victories. The 7980XE is the choice for heavily threaded workloads that scale beyond 16 cores, while the 9960X offers a slight edge in most measured scenarios despite having fewer cores.

The Verdict

The data points to the Intel Core i9-9960X as the better all-around performer for most buyers. It wins six of the eight head-to-head comparisons, including every Cinebench test, with margins of 0.2% to 0.3% over the 7980XE. Its higher base clock of 3.10 GHz versus 2.60 GHz and boost clock of 4.50 GHz versus 4.40 GHz give it an advantage in single-threaded and lightly threaded tasks. The 9960X also launched at a lower MSRP of $1684 compared to $1999 for the 7980XE. However, the 7980XE is not obsolete: it wins Geekbench multicore by 6.5% and Geekbench singlecore by 2.8%, suggesting its 18 cores provide better scaling in certain workloads despite lower clock speeds. Buy the 9960X if you prioritize Cinebench-style rendering and mixed workloads; buy the 7980XE if you need two extra physical cores and can accept lower clocks in most tests.

Architecture Differences

Both processors share the same Skylake architecture, codename Skylake-X, built on Intel's 14 nm process node with a die size of 484 mm². The 7980XE belongs to the Core i9 Extreme (X-Series 7th Gen) family, while the 9960X is part of the Core i9 (X-Series 9th Gen) lineup. The 7980XE packs 18 cores and 36 threads, whereas the 9960X has 16 cores and 32 threads. Cache configurations differ accordingly: the 7980XE has 24.75 MB of shared L3 cache, while the 9960X has 22 MB. Both share 64 KB of L1 and 1 MB of L2 per core. Memory support is identical—DDR4 with a quad-channel bus and 85.3 GB/s bandwidth, with no ECC support. PCIe connectivity matches at Gen 3 with 44 CPU lanes. Both use Intel Socket 2066, have a 165 W TDP, and feature unlocked multipliers. The 7980XE was released in 2017, while the 9960X arrived in 2018. Both are end-of-life productions.

FAQ

Q: Which CPU has more cores and threads?

A: The Intel Core i9-7980XE has 18 cores and 36 threads. The Intel Core i9-9960X has 16 cores and 32 threads.

Q: Does the 9960X beat the 7980XE in Cinebench tests?

A: Yes. The 9960X wins all four Cinebench variants—R15 multicore, R15 singlecore, R20 multicore, R20 singlecore, R23 multicore, and R23 singlecore—by a margin of 0.2% to 0.3%.

Q: Where does the 7980XE outperform the 9960X?

A: The 7980XE wins Geekbench multicore with a score of 11198 versus 10512, a 6.5% advantage, and Geekbench singlecore with 1435 versus 1396, a 2.8% advantage.

Q: Are the memory specifications different between the two?

A: No. Both support DDR4 memory with a quad-channel bus and 85.3 GB/s bandwidth. Neither supports ECC memory.

Q: What is the launch MSRP for each processor?

A: The 7980XE has a launch MSRP of $1999. The 9960X has a launch MSRP of $1684.

Q: Which processor has a higher boost clock?

A: The 9960X boosts to 4.50 GHz, while the 7980XE boosts to 4.40 GHz. The 9960X also has a higher base clock at 3.10 GHz versus 2.60 GHz.

Specification Differences

The two CPUs differ in several key specifications. The 7980XE has 18 cores and 36 threads, while the 9960X has 16 cores and 32 threads. Base clocks are 2.60 GHz for the 7980XE and 3.10 GHz for the 9960X. Boost clocks are 4.40 GHz versus 4.50 GHz, favoring the 9960X. L3 cache is 24.75 MB on the 7980XE and 22 MB on the 9960X. The 7980XE is from the 7th Gen Core i9 Extreme series, while the 9960X is from the 9th Gen Core i9 series. Release dates are 2017-08-31 for the 7980XE and 2018-10-18 for the 9960X. Launch MSRP is $1999 for the 7980XE and $1684 for the 9960X. Part numbers differ: SR3RS for the 7980XE and SREZ4 for the 9960X. All other specifications—socket, TDP, process node, die size, memory support, PCIe lanes, integrated graphics (none), and market segment—are identical.

Head-to-Head Benchmarks

The 9960X dominates the Cinebench suite. In Cinebench R15 multicore, it scores 2532 against 2527 for the 7980XE, a 0.2% margin. The singlecore test shows 357 versus 356, a 0.3% edge. Cinebench R20 multicore results are 10550 versus 10530, again 0.2% in favor of the 9960X. The R20 singlecore test gives 1489 versus 1486, a 0.2% win. Cinebench R23 multicore shows 25120 versus 25072, another 0.2% margin, and R23 singlecore is 3546 versus 3539, 0.2% higher. These consistent margins, while small, indicate the 9960X's higher clocks translate directly to better Cinebench performance despite having two fewer cores.

The 7980XE fights back in Geekbench. Its multicore score of 11198 beats the 9960X's 10512 by a substantial 6.5%. The singlecore score of 1435 versus 1396 gives it a 2.8% lead. This is notable because the 7980XE has a lower boost clock of 4.40 GHz, yet still wins singlecore Geekbench. The 18-core configuration appears to provide a measurable advantage in Geekbench's multi-threaded workload, even though Cinebench favors the 16-core 9960X.

Average benchmark scores reflect the split: the 7980XE averages 7018 across all tests, while the 9960X averages 6938. The 7980XE sits 1.2% ahead of the 9960X in average score, and its nearest rivals include the Intel Xeon Platinum 8260 (0.4% behind) and the AMD EPYC 7302P (1.1% ahead). The 9960X's nearest rivals are the AMD Ryzen 3 3200G (0.1% behind) and the Intel Xeon W-2195 (0.7% behind). Both CPUs sit in the 63rd percentile of all CPUs, indicating similar overall standing despite their head-to-head differences.

Where Each One Wins

The 9960X is the pick for Cinebench-based rendering workflows. It wins every Cinebench R15, R20, and R23 test, meaning applications that rely on these rendering pipelines will see marginally better performance. Its higher base and boost clocks also make it preferable for lightly threaded tasks where single-core speed matters, as evidenced by its wins in Cinebench singlecore tests. The 9960X also launched at a lower MSRP of $1684, which may factor into purchasing decisions for those who compare launch prices.

The 7980XE wins Geekbench multicore by a decisive 6.5% margin, suggesting its 18 cores provide better scaling in workloads that resemble Geekbench's test suite. This includes tasks like complex data compression, image processing, and certain scientific calculations that can utilize more than 16 threads efficiently. Its Geekbench singlecore win of 2.8% is less intuitive given the lower clock speed, but the data shows it outperforms the 9960X in that specific benchmark. The 7980XE also has more L3 cache at 24.75 MB versus 22 MB, which may benefit workloads with large working sets.

For most users, the 9960X is the safer recommendation due to its wins in the majority of benchmarks and lower launch MSRP. The 7980XE is for those who know their software scales beyond 16 cores and can exploit the 18-core advantage, particularly in Geekbench-style workloads. The overall percentile ranking is identical at 63 for both, indicating they occupy a similar performance tier in the broader CPU landscape. The decision ultimately comes down to whether you trust Cinebench or Geekbench as your primary reference point, with the 9960X favored in the former and the 7980XE in the latter.