CPU Comparison

The Intel Atom x7835RE and AMD Ryzen Threadripper 3960X occupy opposite ends of the computing spectrum, yet both land in the 65th percentile of all CPUs. The Atom is a 12-watt mobile part built for efficiency, while the Threadripper is a 280-watt desktop monster. Benchmark data shows the Threadripper dominates every shared test, but the Atom’s existence in the same percentile ranking suggests its niche value is measured differently, not by raw speed, but by power-constrained competence. This analysis breaks down where each processor wins, what their architectures imply, and who should consider which.

Where Each One Wins

The AMD Ryzen Threadripper 3960X wins every single head-to-head benchmark in the data set, taking all six shared tests. Its victories span both single-core and multi-core workloads, with deltas consistently around 87% in its favor. The data shows no benchmark category where the Atom x7835RE comes out ahead, not in Cinebench R15, R20, or R23, regardless of thread count. This is a complete sweep for the Threadripper in direct comparison.

However, the Atom x7835RE wins on a different battlefield: power efficiency and platform footprint. With a TDP of 12 watts versus the Threadripper’s 280 watts, the Atom consumes a fraction of the energy. Its market segment is Mobile, while the Threadripper is Desktop. The Atom integrates UHD Graphics 32EU, eliminating the need for a discrete GPU, while the Threadripper has no integrated graphics at all. For fanless or battery-powered industrial systems, the Atom’s 8 cores and 8 threads at 1.30 GHz base clock provide a usable computing baseline that the Threadripper’s 24 cores and 48 threads simply cannot match in thermal or physical constraints.

The Atom also wins on platform cost indirectly, not in price, but in supporting hardware. Its single-channel DDR4/DDR5 memory bus and 9 PCIe Gen 3 lanes suggest a minimal motherboard design, whereas the Threadripper’s quad-channel DDR4 and PCIe Gen 4 require a substantial TRX4 platform. The data implies the Atom is for embedded or edge deployments, while the Threadripper is for workstation-class rendering and simulation.

Architecture Differences

The two processors are built on fundamentally different philosophies. The Intel Atom x7835RE uses the Amston Lake architecture with Gracemont cores on Intel’s 10 nm process. It features 8 cores and 8 threads, with no hyperthreading. Its cache hierarchy is unusual: 96 KB L1 per core, 2 MB L2 per module, and 6 MB shared L3. The Atom supports both DDR4 and DDR5 memory, but only in single-channel configuration, yielding 38.4 GB/s of memory bandwidth. ECC memory is not supported.

The AMD Ryzen Threadripper 3960X uses the Zen 2 architecture, codenamed Castle Peak, on TSMC’s 7 nm process. It packs 24 cores and 48 threads, with SMT enabled. The cache layout is 64 KB L1 per core, 512 KB L2 per core, and a massive 128 MB L3 cache. Memory support is DDR4 only, but via a quad-channel bus that delivers 102.4 GB/s, nearly three times the Atom’s bandwidth. The Threadripper also has 15,200 million transistors spread across four 74 mm² dies, compared to the Atom’s unspecified transistor count and die size.

The process node difference is significant: 7 nm versus 10 nm, with the Threadripper built by TSMC and the Atom by Intel. The Threadripper’s multiplier is unlocked, allowing overclocking, while the Atom’s is locked. The Threadripper also supports PCIe Gen 4, while the Atom is limited to Gen 3 with only 9 lanes. The Atom’s integrated UHD Graphics 32EU is a feature the Threadripper lacks entirely, making the Atom a complete system-on-chip while the Threadripper requires external graphics.

Head-to-Head Benchmarks

The head-to-head data reveals a consistent, near-uniform performance gap. In Cinebench R15 multicore, the Threadripper scores 4692 against the Atom’s 609, a delta of -87% from the Atom’s perspective. The single-core R15 test shows 662 versus 85, again -87.2%. Moving to R20, the multicore scores are 19553 versus 2541 (-87%), and single-core is 2760 versus 358 (-87%). The pattern holds in R23: multicore 46557 versus 6051 (-87%), single-core 6572 versus 854 (-87%).

These deltas are remarkably consistent, hovering near -87% across all six tests. This suggests the performance difference is not workload-dependent but rather a fundamental throughput disparity driven by core count, clock speed, and architecture efficiency. The Threadripper’s base clock of 3.80 GHz and boost of 4.50 GHz dwarf the Atom’s 1.30 GHz base and 3.60 GHz boost. Even in single-threaded tests, where the Atom’s Gracemont cores might be expected to close the gap, the Threadripper’s Zen 2 cores are 87% faster.

The data implies that for any compute task that can leverage multiple threads, the Threadripper is not just faster, it is in a different performance class entirely. The Atom’s scores, while low in absolute terms, still place it in the 65th percentile of all CPUs, which likely reflects its efficiency per watt rather than raw performance.

FAQ

Q: Which processor has more cores and threads?

A: The AMD Ryzen Threadripper 3960X has 24 cores and 48 threads, while the Intel Atom x7835RE has 8 cores and 8 threads. The Threadripper also has a higher base clock (3.80 GHz vs 1.30 GHz) and boost clock (4.50 GHz vs 3.60 GHz).

Q: How do they compare in Cinebench R23 multicore performance?

A: The Threadripper scores 46557 in Cinebench R23 multicore, while the Atom scores 6051. This represents an 87% advantage for the Threadripper, consistent with all other Cinebench versions and single-core tests.

Q: What are the power consumption differences?

A: The Atom x7835RE has a TDP of 12 watts, while the Threadripper 3960X has a TDP of 280 watts. This is a 268-watt difference, reflecting the Atom’s mobile/embedded design versus the Threadripper’s desktop workstation focus.

Q: Do both processors support ECC memory?

A: No. Neither processor supports ECC memory according to the data. Both list ECC memory as false.

Q: Which processor has integrated graphics?

A: The Intel Atom x7835RE includes UHD Graphics 32EU integrated graphics. The AMD Ryzen Threadripper 3960X has no integrated graphics and requires a discrete GPU.

Q: What memory bandwidth does each support?

A: The Atom supports single-channel DDR4/DDR5 with 38.4 GB/s bandwidth. The Threadripper supports quad-channel DDR4 with 102.4 GB/s bandwidth, which is 64 GB/s higher.

Specification Differences

| Specification | Intel Atom x7835RE | AMD Ryzen Threadripper 3960X |

|---|---|---|

| Cores | 8 | 24 |

| Threads | 8 | 48 |

| Base Clock | 1.30 GHz | 3.80 GHz |

| Boost Clock | 3.60 GHz | 4.50 GHz |

| TDP | 12 W | 280 W |

| Socket | Intel BGA 1264 | AMD Socket TRX4 |

| Architecture | Amston Lake | Zen 2 (Castle Peak) |

| Process Node | 10 nm | 7 nm |

| Foundry | Intel | TSMC |

| Transistors | Not specified | 15,200 million |

| Die Size | Not specified | 4x 74 mm² |

| L1 Cache | 96 KB (per core) | 64 KB (per core) |

| L2 Cache | 2 MB (per module) | 512 KB (per core) |

| L3 Cache | 6 MB (shared) | 128 MB |

| Memory Support | DDR4, DDR5 | DDR4 |

| Memory Bus | Single-channel | Quad-channel |

| Memory Bandwidth | 38.4 GB/s | 102.4 GB/s |

| ECC Memory | False | False |

| PCIe | Gen 3, 9 Lanes (CPU only) | Gen 4 |

| Integrated Graphics | UHD Graphics 32EU | None |

| Market Segment | Mobile | Desktop |

| Multiplier Unlocked | False | True |

| Launch MSRP | $127 | $1399 |

The Verdict

The data is unambiguous: the AMD Ryzen Threadripper 3960X is the superior processor for raw computational performance. Its 24 cores and 48 threads, combined with a 4.50 GHz boost clock and 128 MB L3 cache, deliver 87% higher scores across all Cinebench benchmarks compared to the Atom x7835RE. Anyone needing multi-threaded muscle for rendering, simulation, or heavy parallel workloads should choose the Threadripper, provided their platform can handle its 280-watt TDP and quad-channel DDR4 requirements.

The Intel Atom x7835RE serves a completely different purpose. Its 12-watt TDP, integrated UHD Graphics, and single-channel memory support make it ideal for embedded systems, industrial PCs, or mobile devices where power draw and physical size are the primary constraints. The data shows it is not competitive with the Threadripper in any benchmark, but its 65th percentile ranking indicates it outperforms many other CPUs in its efficiency class. For workloads that demand minimal energy consumption and a compact footprint, not raw speed, the Atom is the logical choice.

The 87% delta in every test is not a subtle difference; it is a chasm. But the Atom does not need to win benchmarks to win in its use case. The verdict is simple: choose the Threadripper for performance, choose the Atom for efficiency. There is no overlap in their intended roles, and the data confirms they should never be cross-shopped for the same application.