AMD Ryzen 5 5600U vs Intel Core i7-6850K Comparison

The Intel Core i7-6850K and the AMD Ryzen 5 5600U represent two very different eras of processor design, yet they land at nearly the same overall performance percentile. The i7-6850K, a desktop Broadwell-E part from 2016, and the 5600U, a mobile Zen 3 chip from 2021, both sit at the 52nd percentile in the database. Their average benchmark scores are also close, with the Intel part at 3079 and the AMD part at 3053, a difference of less than 1%. However, the distribution of those scores is starkly different: the 5600U wins 4 of the 6 head-to-head benchmark comparisons, while the i7-6850K wins the remaining 2, including the most dramatic multi-core victory. The data suggests that the choice between them is not about raw average performance, but about which specific workloads matter most, and whether the user prioritizes the older chip's sustained multi-threaded throughput or the newer chip's single-thread efficiency and integrated graphics.

The Verdict

The data points to a clear split based on workload type. The AMD Ryzen 5 5600U is the better choice for users whose primary tasks are single-threaded or lightly-threaded, as it holds decisive leads in every single-core test. The Intel Core i7-6850K, however, remains the stronger option for specific multi-threaded workloads, particularly those that scale heavily with memory bandwidth and raw core throughput over long durations. The i7-6850K wins the Cinebench R23 multi-core test by 24.1% and Geekbench multi-core by 9.7%, but it loses the Cinebench R15 multi-core test by 26.3%, which indicates that the two chips respond very differently to the same type of workload depending on the benchmark's characteristics. For a user who needs a desktop system with a quad-channel memory bus and 40 PCIe Gen 3 lanes, the i7-6850K is the only viable option here. For a user who needs a mobile processor with integrated graphics, the 5600U is the only choice. The data does not support a universal winner; it supports a contextual one.

Architecture Differences

The architectural gap between these two processors is wide, reflecting their five-year release span. The Intel Core i7-6850K is built on the Broadwell-E architecture, using a 14 nm process node manufactured by Intel. It contains 3,400 million transistors on a 246 mm² die. The AMD Ryzen 5 5600U is built on the Zen 3 architecture, using a 7 nm process node manufactured by TSMC. It packs 10,700 million transistors on a 180 mm² die. The transistor density difference is significant, with the AMD part fitting more than three times the transistors into a smaller physical area.

The cache hierarchies also differ. Both have 64 KB of L1 cache per core, but the i7-6850K has 256 KB of L2 cache per core, while the 5600U has 512 KB per core. The shared L3 cache is 15 MB on the Intel part and 16 MB on the AMD part. The Intel processor supports quad-channel DDR4 memory with a theoretical bandwidth of 76.8 GB/s, while the AMD processor supports dual-channel DDR4 with a bandwidth of 51.2 GB/s. The PCIe connectivity is also different: the i7-6850K provides 40 PCIe Gen 3 lanes from the CPU, while the 5600U provides only 8 lanes. The AMD chip includes integrated Radeon Vega 7 graphics, while the Intel chip has no integrated graphics. The i7-6850K has an unlocked multiplier, whereas the 5600U is locked. The Intel part is marked end-of-life, while the AMD part is still active in production.

Head-to-Head Benchmarks

The benchmark results show a pattern of AMD dominance in single-core and Intel dominance in specific multi-core tests. The most lopsided result is in Cinebench R15 single-core, where the 5600U scores 223 against the i7-6850K's 137, a 38.6% advantage. This is a massive gap that underscores the generational improvement in IPC and clock speed. The 5600U boosts to 4.20 GHz compared to the i7-6850K's 3.80 GHz, and the Zen 3 architecture delivers far more instructions per clock. In Geekbench single-core, the 5600U scores 1567 versus 1217, a 22.3% lead. The Cinebench R23 single-core result is nearly identical, with the 5600U at 1371 and the i7-6850K at 1365, a mere 0.4% difference.

The multi-core results are more complex. In Cinebench R15 multi-core, the 5600U scores 1321 against 974, winning by 26.3%. This is surprising given the Intel part's higher TDP and desktop socket. However, in Cinebench R23 multi-core, the i7-6850K reverses the result dramatically, scoring 9672 against 7792.5, a 24.1% win. In Geekbench multi-core, the i7-6850K scores 6629 against 6043, a 9.7% advantage. The reversal between R15 and R23 suggests that the newer benchmark is more sensitive to the i7-6850K's quad-channel memory bandwidth and larger power envelope, allowing it to sustain higher clocks for longer. The Intel part also has a higher base clock of 3.60 GHz versus 2.30 GHz, which helps in sustained workloads.

Specification Differences

The two processors differ in nearly every key specification. The base clock is 3.60 GHz on the Intel and 2.30 GHz on the AMD. The boost clock is 3.80 GHz on the Intel and 4.20 GHz on the AMD. The TDP is 140 watts for the Intel and 15 watts for the AMD, a 9.3x difference that reflects the desktop versus mobile design targets. The socket types are incompatible: Intel Socket 2011-3 for the i7-6850K and AMD Socket FP6 for the 5600U. The process node is 14 nm for Intel and 7 nm for AMD. The transistor count is 3,400 million versus 10,700 million. The die size is 246 mm² versus 180 mm². The L2 cache is 256 KB per core versus 512 KB per core. The L3 cache is 15 MB versus 16 MB. The memory bus is quad-channel versus dual-channel. The memory bandwidth is 76.8 GB/s versus 51.2 GB/s. The PCIe lanes are 40 versus 8. The Intel part has no integrated graphics, while the AMD part has Radeon Vega 7. The Intel part has an unlocked multiplier; the AMD part does not. The release dates are 2016-05-30 for the Intel and 2021-01-11 for the AMD.

FAQ

Q: Which processor has a higher single-core benchmark score?

A: The AMD Ryzen 5 5600U wins in all single-core tests. It leads by 38.6% in Cinebench R15 single-core, 22.3% in Geekbench single-core, and 0.4% in Cinebench R23 single-core.

Q: Which processor wins in multi-core performance?

A: It depends on the benchmark. The AMD Ryzen 5 5600U wins Cinebench R15 multi-core by 26.3%, but the Intel Core i7-6850K wins Cinebench R23 multi-core by 24.1% and Geekbench multi-core by 9.7%.

Q: Do these processors support ECC memory?

A: No. Both the Intel Core i7-6850K and the AMD Ryzen 5 5600U have ECC memory support listed as false in the data.

Q: What is the TDP difference between the two?

A: The Intel Core i7-6850K has a TDP of 140 watts, while the AMD Ryzen 5 5600U has a TDP of 15 watts. The Intel part consumes significantly more power.

Q: Which processor has integrated graphics?

A: Only the AMD Ryzen 5 5600U has integrated graphics, specifically Radeon Vega 7. The Intel Core i7-6850K has no integrated graphics.

Q: What are the average benchmark scores for each?

A: The Intel Core i7-6850K has an average benchmark score of 3079, while the AMD Ryzen 5 5600U has an average score of 3053. The Intel part is 0.9% higher, but both are at the 52nd percentile.

Where Each One Wins

The AMD Ryzen 5 5600U is the clear winner in single-threaded tasks. Its 38.6% lead in Cinebench R15 single-core and 22.3% lead in Geekbench single-core make it the better choice for applications that rely on quick response times, such as everyday desktop use, web browsing, and lightly-threaded productivity software. Its 0.4% lead in Cinebench R23 single-core, while narrow, still puts it ahead. The 5600U also wins in Cinebench R15 multi-core, which suggests it handles shorter, bursty multi-threaded workloads well. Its 15-watt TDP and integrated graphics make it suitable for a thin-and-light laptop where battery life and portability are priorities. The locked multiplier is a minor drawback, but the base clock of 2.30 GHz with a 4.20 GHz boost is sufficient for mobile workloads.

The Intel Core i7-6850K wins in Cinebench R23 multi-core by 24.1% and in Geekbench multi-core by 9.7%. These wins point to workloads that stress the memory subsystem and require sustained high throughput. The quad-channel memory bus, with a bandwidth of 76.8 GB/s versus the 5600U's 51.2 GB/s, gives the Intel part an advantage in data-intensive tasks like video rendering, scientific simulations, and heavy multitasking. The 40 PCIe Gen 3 lanes also make it the better choice for a workstation with multiple GPUs or high-speed storage devices. The unlocked multiplier allows for overclocking, which can further extend its multi-core lead. The 140-watt TDP and desktop socket mean it is designed for a stationary system, not a mobile one. The i7-6850K's lack of integrated graphics requires a dedicated GPU, which is expected in a desktop build. For a user with a specific workload that scales with memory bandwidth and PCIe connectivity, the i7-6850K is the stronger performer despite its age.