AMD Ryzen 7 4980U vs Intel Core i7-6850K Comparison

The Intel Core i7-6850K and AMD Ryzen 7 4980U represent two very different approaches to CPU design, separated by five years of architectural evolution. The former is a 140W desktop enthusiast part from the Broadwell-E era, while the latter is a 15W mobile processor built on the Zen 2 architecture. Despite their contrasting profiles, benchmark results show they land in a remarkably similar performance tier, with an average benchmark score of 3079 for the Intel part and 3066 for the AMD part. The head-to-head data reveals a split decision: each processor wins two of the four shared benchmark tests, though the margins of victory are not evenly distributed. The Intel chip edges ahead in the more modern Cinebench R23 tests, while the AMD part dominates the older R15 workload. This creates a nuanced picture where the "better" processor depends entirely on which benchmark generation is used as the reference point.

Head-to-Head Benchmarks

The most dramatic divergence appears in Cinebench R15 multi-core, where the AMD Ryzen 7 4980U scores 1658 against the Intel Core i7-6850K's 974. That is a 41.3% deficit for the Intel part, a massive gap that reflects the core-count and efficiency advantages of the newer Zen 2 design. The Ryzen 7 4980U's 8 cores and 16 threads simply overwhelm the i7-6850K's 6 cores and 12 threads in this workload, despite the Intel chip's much higher 140W TDP. The single-core R15 test shows a similar though less severe pattern: AMD wins 182 to 137, a 24.7% advantage. These results suggest that in older rendering workloads, the Ryzen 7 4980U is categorically faster, likely due to its higher 4.40 GHz boost clock compared to the i7-6850K's 3.80 GHz boost.

The picture flips when examining Cinebench R23 results. Here, the Intel Core i7-6850K takes the multi-core test with a score of 9672 versus 9164 for the AMD part, a 5.5% margin. The single-core R23 test also favors Intel, with 1365 against 1260, an 8.3% advantage. This reversal is notable because R23 is a more demanding and modern workload that typically scales better with architectural improvements. The data indicates that while the Ryzen 7 4980U has superior raw core throughput in R15, the Intel chip's larger 15 MB L3 cache and higher memory bandwidth of 76.8 GB/s may provide benefits in R23's more complex rendering paths. The quad-channel DDR4 memory support on the Intel side, versus dual-channel LPDDR4 on the AMD side, could also be a contributing factor.

Geekbench results are only available for the Intel part, showing a multi-core score of 6629 and single-core score of 1217. Without a direct AMD comparison in this test, the data cannot establish a winner, but the Intel figures place it in the 52nd percentile of all CPUs. Both processors share this exact percentile ranking, indicating that despite their architectural differences, they occupy the same overall performance bracket. The average benchmark scores are similarly close, with the i7-6850K at 3079 and the Ryzen 7 4980U at 3066, a difference of less than half a percent. This near parity in aggregate scoring, combined with the divergent individual test results, suggests that benchmark selection heavily influences which processor appears superior.

Where Each One Wins

The AMD Ryzen 7 4980U wins decisively in Cinebench R15, both multi-core and single-core. This makes it the better choice for workloads that resemble older rendering engines or applications that benefit from high thread counts with efficient per-core performance. The 41.3% multi-core lead and 24.7% single-core lead in R15 are substantial enough to recommend the AMD part for legacy rendering tasks, particularly in mobile or power-constrained environments where its 15W TDP offers a massive efficiency advantage over the Intel chip's 140W TDP. The Ryzen 7 4980U also brings integrated Radeon Graphics with 512 shader processors, which is absent from the Intel part entirely, making it the only option here for systems without a discrete GPU.

The Intel Core i7-6850K wins in Cinebench R23, with a 5.5% multi-core and 8.3% single-core advantage. This suggests it is better suited for modern rendering workloads that have been updated to leverage newer instruction sets and caching behaviors. The Intel chip's quad-channel memory bus and 76.8 GB/s bandwidth likely contribute to its R23 performance, as does its larger 15 MB L3 cache compared to the Ryzen 7 4980U's 8 MB. For desktop users running current content-creation software, the i7-6850K's R23 wins make it the more appealing choice, despite its age and higher power draw. The Intel part's 40 PCIe Gen 3 lanes also provide more expansion headroom for multi-GPU configurations or high-speed storage arrays, which is a significant advantage in a desktop context.

The wins are evenly split at two apiece, but the magnitude of AMD's R15 victories dwarfs Intel's R23 margins. This asymmetry matters: a 41.3% win is far more impactful than a 5.5% win in practical terms. However, the R23 tests are more indicative of contemporary software demands, so Intel's narrower but more modern wins may carry greater relevance for current users. The data does not support a universal winner; instead, it points to workload-specific superiority.

Architecture Differences

The architectural gap between these two processors is substantial. The Intel Core i7-6850K uses the Broadwell-E architecture on a 14 nm process node, fabricated by Intel with 3,400 million transistors on a 246 mm² die. It features 6 cores and 12 threads, with a base clock of 3.60 GHz and boost clock of 3.80 GHz. Its cache hierarchy includes 64 KB of L1 per core, 256 KB of L2 per core, and a shared 15 MB L3 cache. Memory support is DDR4 over a quad-channel bus, providing 76.8 GB/s of bandwidth. The chip uses the Intel Socket 2011-3 and supports 40 PCIe Gen 3 lanes from the CPU. It was released in May 2016 with a launch MSRP of $617 and is now end-of-life.

The AMD Ryzen 7 4980U uses the Zen 2 architecture on a 7 nm process node, fabricated by TSMC with 9,800 million transistors on a 156 mm² die. It has 8 cores and 16 threads, with a base clock of 2.00 GHz and boost clock of 4.40 GHz. Its cache includes 64 KB of L1 per core, 512 KB of L2 per core, and an 8 MB shared L3 cache. Memory support is LPDDR4 over a dual-channel bus, providing 34.1 GB/s of bandwidth. The chip uses the AMD Socket FP6 and supports PCIe Gen 3, though the lane count is not specified. It was released in April 2021 and is also end-of-life. The Ryzen 7 4980U includes integrated Radeon Graphics with 512 shader processors, while the Intel part has no integrated graphics.

The manufacturing differences are stark: the AMD chip uses roughly three times the transistor count (9,800 million versus 3,400 million) on a smaller die (156 mm² versus 246 mm²), thanks to the more advanced 7 nm process. This explains how the Ryzen 7 4980U delivers 8 cores and 16 threads within a 15W TDP, while the Intel part manages only 6 cores and 12 threads at 140W. The Zen 2 architecture's higher boost clock of 4.40 GHz versus 3.80 GHz is a key factor in the AMD part's R15 single-core win. However, the Intel chip's larger L3 cache and quad-channel memory bandwidth give it advantages in memory-intensive workloads, as reflected in its R23 performance. The Ryzen 7 4980U is also locked, with no unlocked multiplier, whereas the i7-6850K is multiplier-unlocked, allowing overclocking.

FAQ

Q: Which processor has more cores and threads?

A: The AMD Ryzen 7 4980U has 8 cores and 16 threads, while the Intel Core i7-6850K has 6 cores and 12 threads.

Q: How do their Cinebench R23 multi-core scores compare?

A: The Intel Core i7-6850K scores 9672, which is 5.5% higher than the AMD Ryzen 7 4980U's 9164.

Q: What is the TDP difference between these two CPUs?

A: The Intel Core i7-6850K has a TDP of 140W, while the AMD Ryzen 7 4980U has a TDP of 15W.

Q: Does either processor include integrated graphics?

A: The AMD Ryzen 7 4980U includes Radeon Graphics with 512 shader processors; the Intel Core i7-6850K has no integrated graphics.

Q: Which processor supports quad-channel memory?

A: The Intel Core i7-6850K supports quad-channel memory with 76.8 GB/s bandwidth, while the AMD Ryzen 7 4980U supports dual-channel memory with 34.1 GB/s.

Q: What is the average benchmark score for each processor?

A: The Intel Core i7-6850K has an average benchmark score of 3079, while the AMD Ryzen 7 4980U has an average score of 3066.

The Verdict

The data presents a clear split based on workload and platform priorities. For users running Cinebench R15 or similar legacy rendering tasks, the AMD Ryzen 7 4980U is the unambiguous choice, delivering a 41.3% multi-core and 24.7% single-core advantage over the Intel part. Its 8 cores, 16 threads, and higher 4.40 GHz boost clock make it particularly effective in these scenarios, and its 15W TDP offers an extraordinary efficiency profile that the 140W Intel chip cannot match. The integrated Radeon Graphics also make the Ryzen 7 4980U a self-contained solution, whereas the i7-6850K requires a discrete GPU for any display output.

For users prioritizing modern rendering workloads as represented by Cinebench R23, the Intel Core i7-6850K holds the advantage with a 5.5% multi-core and 8.3% single-core lead. Its larger 15 MB L3 cache and quad-channel memory bandwidth appear to provide tangible benefits in this newer benchmark. The unlocked multiplier on the Intel part also allows overclocking potential that the locked AMD chip does not offer, though overclocking would further increase its already high 140W TDP. The i7-6850K's 40 PCIe Gen 3 lanes make it better suited for expansion-heavy desktop builds.

Both processors sit at the 52nd percentile of all CPUs and have nearly identical average benchmark scores, differing by less than 0.5%. This parity means that either chip will deliver similar overall performance in a mixed workload environment. The decision ultimately rests on whether the user values the AMD part's efficiency, core count, and legacy benchmark dominance, or the Intel part's modern benchmark wins, memory bandwidth, and overclocking headroom. There is no universal victor in this comparison; the data supports each processor winning in its respective domain.