Intel Core i7-5960X vs Intel Core i9-9880H Comparison

The Intel Core i7-5960X and Intel Core i9-9880H are both 8-core, 16-thread processors, yet they represent vastly different eras and design philosophies. The data shows the desktop-oriented i7-5960X wins 7 of 8 head-to-head benchmark comparisons, while the mobile i9-9880H takes a single, decisive victory in Geekbench single-core. This split underscores that the choice between them hinges entirely on workload: sustained multi-threaded throughput versus peak single-thread responsiveness.

Where Each One Wins

The Intel Core i7-5960X is the clear victor in every Cinebench test, across all three major versions. In Cinebench R15 multicore, it scores 1165 against the i9-9880H’s 1152, a 1.1% edge. That margin repeats in R20 multicore (4857 vs 4803, +1.1%) and R23 multicore (11565 vs 11437, +1.1%). The Geekbench multicore test shows a larger gap: the i7-5960X scores 6461 versus 6248, a 3.4% advantage. This makes the i7-5960X the superior choice for rendering, video encoding, and any workload that scales across all 16 threads.

The Intel Core i9-9880H wins exactly one benchmark, but it is a significant one: Geekbench single-core. Its score of 1372 crushes the i7-5960X’s 1010, a massive 26.4% delta. This indicates the i9-9880H is substantially better for lightly-threaded tasks such as web browsing, office productivity, and legacy applications that rely on a single fast core. In the Cinebench single-core tests, however, the gap nearly vanishes — the i7-5960X edges ahead with 164 vs 162 in R15 (+1.2%) and 685 vs 677 in R20 (+1.2%). The i9-9880H’s win is therefore concentrated in Geekbench’s specific single-thread workload, not universal across all single-core tests.

The overall average benchmark scores are nearly identical: 3442 for the i7-5960X and 3433 for the i9-9880H. Both CPUs sit at the 54th percentile of all processors. The nearest rival data confirms this parity — the i7-5960X is within 0.1% of the AMD Ryzen 3 PRO 5350G and AMD Ryzen 5 4600HS, while the i9-9880H is within 0.3% of the same chips. The average scores deltas between the two CPUs are trivial, meaning the "winner" depends entirely on which benchmark suite is prioritized.

Architecture Differences

The two chips come from different architectural generations and target completely different platforms. The i7-5960X is built on the 22 nm Haswell-E process and uses the LGA 2011-3 socket. It is a desktop-class extreme processor with a 140 W TDP. The i9-9880H uses the 14 nm Coffee Lake-HR architecture, fits into the BGA 1440 socket, and is a mobile part with a 45 W TDP. The die size difference is stark: the i7-5960X has a 356 mm² die with 2,600 million transistors, while the i9-9880H uses a much smaller 149 mm² die with no transistor count listed in the data.

Cache configurations differ as well. Both have 64 KB of L1 and 256 KB of L2 per core, but the shared L3 cache is larger on the desktop part: 20 MB on the i7-5960X versus 16 MB on the i9-9880H. Memory bandwidth is another major divergence. The i7-5960X supports quad-channel DDR4 with a theoretical bandwidth of 68.3 GB/s. The i9-9880H is limited to dual-channel memory with 42.7 GB/s of bandwidth. This gives the older desktop chip a significant advantage in memory-intensive workloads, which helps explain its multi-core lead.

Clock speeds tell the opposite story. The i7-5960X has a base clock of 3.00 GHz and a boost clock of 3.50 GHz. The i9-9880H starts at a lower 2.30 GHz base but boosts up to 4.80 GHz. That 1.3 GHz boost advantage is what drives the i9-9880H’s Geekbench single-core win. The i7-5960X has an unlocked multiplier for overclocking, while the i9-9880H is locked. The i9-9880H also includes integrated UHD 630 graphics, whereas the i7-5960X has no integrated GPU listed. Both chips support DDR4 memory and lack ECC support. The i7-5960X offers 40 PCIe Gen 3 lanes from the CPU, while the i9-9880H has generic PCIe Gen 3 support without a specific lane count. The i7-5960X is older, released in August 2014, while the i9-9880H came later in April 2019. Both are end-of-life products.

Head-to-Head Benchmarks

The most decisive win for the i7-5960X is in Geekbench multicore, where it posts 6461 versus 6248. That 3.4% advantage is the largest margin in any multi-core test. The Cinebench results are consistent but narrower: the i7-5960X wins R15 multicore by 13 points (1165 vs 1152), R20 multicore by 54 points (4857 vs 4803), and R23 multicore by 128 points (11565 vs 11437). In every case the delta is exactly 1.1%. The single-core Cinebench tests follow the same pattern, with the i7-5960X winning by 2 points in R15 (164 vs 162) and 8 points in R20 (685 vs 677), both a 1.2% margin.

The i9-9880H’s sole victory is dramatic. In Geekbench single-core, it scores 1372 against the i7-5960X’s 1010, a 26.4% delta. No other test comes close to this magnitude of difference. The Cinebench single-core tests do not corroborate this result — there the i7-5960X leads by about 1%. This suggests the i9-9880H’s high boost clock of 4.80 GHz pays off specifically in Geekbench’s workload, while Cinebench’s single-core test is less sensitive to raw clock speed and more dependent on other architectural factors.

Across all eight head-to-head benchmarks, the i7-5960X wins seven. Its average benchmark score of 3442 is just 9 points higher than the i9-9880H’s 3433, a 0.3% difference. Both CPUs are rated at the 54th percentile, and their nearest rivals are nearly identical — the i7-5960X sits next to the AMD Ryzen 3 PRO 5350G and Ryzen 5 4600HS, while the i9-9880H is bracketed by the Intel Core i7-10875H and the same AMD Ryzen parts. The overall performance envelope is effectively the same; the benchmarks only differ in which specific tasks each chip accelerates.

The Verdict

The data supports a straightforward split. Choose the Intel Core i7-5960X if the workload is heavily multi-threaded and memory-bandwidth sensitive. Its quad-channel memory controller and 20 MB L3 cache deliver consistent wins across every Cinebench version and a 3.4% advantage in Geekbench multicore. The 140 W TDP and desktop socket also imply a platform designed for sustained all-core loads, though the fact pack provides no cooling or power data to confirm this. This chip is the better pick for rendering, compiling, or any task that keeps all 16 threads busy.

Pick the Intel Core i9-9880H if single-thread responsiveness is the priority. Its Geekbench single-core score of 1372 is 26.4% higher than the i7-5960X’s, a massive gap that no other test in the pack reflects. The 4.80 GHz boost clock is the clear driver. Its lower 45 W TDP and mobile BGA socket also make it suitable for laptops, though the pack does not list any form-factor details. However, the i9-9880H loses all Cinebench tests and the Geekbench multicore test, so it is not a general-purpose upgrade.

For most users, the i7-5960X is the safer recommendation. It wins 7 of 8 benchmarks, and its multi-core margins, while small, are consistent across all three Cinebench generations. The i9-9880H’s single win is impressive but isolated. The nearly identical average scores (3442 vs 3433) and the same 54th percentile ranking confirm that neither chip is a performance outlier. The decision comes down to whether a 26.4% single-core boost outweighs a 1.1% to 3.4% multi-core deficit. The data shows the i7-5960X is the better all-rounder, while the i9-9880H is a niche pick for single-threaded applications.

FAQ

Q: Which CPU has more L3 cache?

A: The Intel Core i7-5960X has 20 MB of shared L3 cache, while the Intel Core i9-9880H has 16 MB.

Q: How much faster is the i9-9880H in Geekbench single-core?

A: The i9-9880H scores 1372 versus 1010 for the i7-5960X, a 26.4% advantage.

Q: What is the maximum boost clock difference?

A: The i9-9880H boosts up to 4.80 GHz, while the i7-5960X tops out at 3.50 GHz.

Q: Which chip has higher memory bandwidth?

A: The i7-5960X supports quad-channel memory with 68.3 GB/s bandwidth, compared to the i9-9880H’s dual-channel 42.7 GB/s.

Q: Do both CPUs have the same number of cores and threads?

A: Yes, both have 8 cores and 16 threads.

Q: Who wins the Cinebench R23 multicore test?

A: The i7-5960X wins with a score of 11565 versus 11437, a 1.1% margin.