AMD A10-7850K vs Intel Pentium Silver J5040 Comparison

The Intel Pentium Silver J5040 and AMD A10-7850K are both end-of-life, four-core, four-thread processors, but they represent fundamentally different eras and design philosophies. The data shows a near-perfect tie in overall average benchmark score, with the Intel part scoring 801 and the AMD part scoring 796, a difference of only 0.6%. This statistical dead heat, however, masks significant differences in how each processor achieves its performance, particularly across different benchmark suites and workload types.

Head-to-Head Benchmarks

The benchmark data reveals a clear divergence in performance characteristics. The Intel Pentium Silver J5040 was tested exclusively with Cinebench iterations, while the AMD A10-7850K has Geekbench results. This lack of direct overlap means a single head-to-head comparison is impossible; instead, the analysis must rely on each part's performance within its respective test suite and their shared position in the broader performance hierarchy.

The Intel Pentium Silver J5040 demonstrates a notable scaling pattern across Cinebench versions. In Cinebench R15, it scores 276 points in multi-core and 91 points in single-core. Moving to Cinebench R20, the multi-core score jumps to 1150, while single-core reaches 162. In the more demanding Cinebench R23, the multi-core score is 2739, and single-core is 386. This progression shows a multi-core to single-core ratio that improves with newer test versions; in R15 the multi-core score is roughly 3.03x the single-core score, but in R23 that ratio expands to approximately 7.09x. This suggests the processor's efficiency scales better with the more modern, longer-duration workloads.

The AMD A10-7850K, with its Geekbench results, shows a single-core score of 453 and a multi-core score of 1139. The multi-core to single-core ratio here is roughly 2.51x, which is lower than the Intel part's ratio in any Cinebench test. This indicates that the AMD processor's multi-threaded scaling is less efficient, likely due to its older Steamroller architecture and higher thermal overhead.

When comparing the two processors' positions against their respective nearest rivals, the data shows they occupy nearly identical competitive space. The Intel Pentium Silver J5040's average score of 801 places it in a dead tie with the AMD A10-7700K and Intel Xeon E5530, both at 801. It trails the Intel Core i5-3320M (803) by 0.2% and the AMD Ryzen 3 2200U (805) by 0.5%. The AMD A10-7850K's average score of 796 puts it 0.1% behind the AMD Ryzen Embedded R1606G (797), and 0.2% ahead of both the AMD A6-9400 and AMD A10-5800B (both 794). The two processors are direct rivals, with the Intel part holding a 0.6% advantage, which is within the statistical noise of these benchmarks. Both processors sit at the 21st percentile of all CPUs, indicating they are firmly in the entry-level performance tier.

FAQ

Q: Which processor has a higher average benchmark score?

A: The Intel Pentium Silver J5040 has an average benchmark score of 801, which is 0.6% higher than the AMD A10-7850K's average score of 796. This difference is minimal and places both processors at the 21st percentile of all CPUs.

Q: How do the two processors compare in terms of power consumption?

A: The data shows a significant disparity in thermal design power. The Intel Pentium Silver J5040 has a TDP of 10 watts, while the AMD A10-7850K has a TDP of 95 watts. This is a 9.5x difference in thermal envelope, which has substantial implications for cooling requirements and system design.

Q: What are the memory support differences?

A: The Intel Pentium Silver J5040 supports DDR4 memory with a dual-channel bus and a bandwidth of 38.4 GB/s. The AMD A10-7850K supports DDR3 memory, with no memory bus or bandwidth data provided in the available specifications.

Q: Which processor has a higher base clock speed?

A: The AMD A10-7850K has a base clock of 3.70 GHz, which is significantly higher than the Intel Pentium Silver J5040's base clock of 2.00 GHz. The AMD part also has a higher boost clock at 4.00 GHz compared to the Intel's 3.20 GHz.

Q: Are these processors unlocked for overclocking?

A: Yes, the AMD A10-7850K has an unlocked multiplier, making it overclockable. The Intel Pentium Silver J5040 has a locked multiplier, meaning it cannot be overclocked in the traditional sense.

Q: What is the difference in their manufacturing processes?

A: The Intel Pentium Silver J5040 is built on a 14 nm process by Intel, while the AMD A10-7850K is built on a 28 nm process by GlobalFoundries. The Intel part has a die size of 93 mm², while the AMD part has a die size of 245 mm² and contains 2,411 million transistors.

The Verdict

The data supports distinct use cases for each processor. The Intel Pentium Silver J5040 is the clear choice for power-constrained environments. Its 10-watt TDP, compared to the AMD's 95-watt TDP, makes it suitable for passively cooled or low-power systems like thin clients or embedded devices. Its newer 14 nm process and DDR4 memory support also point toward a more modern platform. The benchmark results show it scales well with newer Cinebench workloads, indicating it handles sustained multi-threaded tasks efficiently relative to its power draw.

The AMD A10-7850K is the choice for users who prioritize raw clock speed and overclocking capability. With a base clock of 3.70 GHz and a boost of 4.00 GHz, it offers substantially higher single-thread performance in its Geekbench results (453 single-core). Its unlocked multiplier and PCIe Gen 3 with 16 lanes make it a more flexible desktop component for older Socket FM2+ systems. However, this comes at the cost of significantly higher power consumption and a larger, older 28 nm die.

The near-identical average scores and 21st percentile ranking suggest that in pure computational throughput, neither processor holds a meaningful advantage. The decision should be guided by platform requirements: the Intel part for efficiency and modern memory, the AMD part for clock speed, overclocking, and desktop-oriented I/O. The 0.6% average score difference is negligible; the 85-watt TDP difference is not.

Specification Differences

The two processors differ across nearly every core specification. The Intel Pentium Silver J5040 has a base clock of 2.00 GHz and a boost clock of 3.20 GHz, while the AMD A10-7850K operates at a base of 3.70 GHz and a boost of 4.00 GHz. The thermal design power is dramatically different: the Intel part is rated at 10 watts, the AMD part at 95 watts. The Intel processor uses the Intel BGA 1090 socket, while the AMD uses the AMD Socket FM2+. The Intel part supports DDR4 memory with a bandwidth of 38.4 GB/s, whereas the AMD part supports DDR3. The integrated graphics differ, with the Intel part featuring UHD Graphics 605 and the AMD part featuring Radeon R7. The Intel processor has a locked multiplier, while the AMD has an unlocked multiplier. The market segments also differ, with the Intel part designated as Mobile and the AMD part as Desktop. The Intel part has a launch MSRP of $161, while the AMD part has no listed launch MSRP.

Architecture Differences

The architectural divide between these processors is generational. The Intel Pentium Silver J5040 uses the Goldmont Plus architecture, codenamed Gemini Lake, built on a 14 nm process by Intel. Its die size is 93 mm². The cache layout is per-core L1 of 56 KB per core and a shared L2 of 4 MB. It supports PCIe Gen 2 with 6 lanes from the CPU. The AMD A10-7850K uses the Steamroller architecture, codenamed Kaveri, built on a 28 nm process by GlobalFoundries. Its die size is 245 mm² and contains 2,411 million transistors. The cache layout is a unified L1 of 256 KB and a unified L2 of 4 MB. It supports PCIe Gen 3 with 16 lanes from the CPU. The Intel part has no L3 cache, and neither processor has L3 cache. The Intel part was released in 2019, while the AMD part was released in 2014. The Intel part has a part number of SRFDB, while the AMD part has part numbers AD785KXBI44JA and AD785KXBJABOX. The Intel part uses a 14 nm node, which is two generations ahead of the AMD's 28 nm node, explaining the significant die size and TDP differences.