AMD Ryzen Threadripper 1950X vs Intel Atom x7405C Comparison

The Verdict

The recorded data presents an unusually clear hierarchy. The AMD Ryzen Threadripper 1950X wins every single head-to-head benchmark in the database against the Intel Atom x7405C, taking all 6 recorded wins. The margin is overwhelming in every category: in Cinebench R15 multi-core, the Threadripper scores 2362 versus the Atom’s 446, a 429.6% advantage. Single-core R15 shows 333 versus 62, a 437.1% gap. The pattern repeats across R20 and R23, with deltas hovering around 428% to 430%. This is not a close contest by any measure.

Who should pick which, strictly from the data? The Threadripper 1950X is the only choice for any workload that touches multi-threaded rendering, compilation, or content creation. Its 16 cores and 32 threads, combined with a 3.40 GHz base and 4.00 GHz boost clock, deliver scores that are simply in a different class. The Atom x7405C, with 4 cores and 4 threads at 1.70 GHz base and 3.40 GHz boost, is limited to single-channel memory and a 12 W TDP. Its only recorded strengths appear in Passmark tests that are not part of the head-to-head set, such as data compression at 56317 and integer math at 14669, but those do not offset the Cinebench deficits. The Atom is a low-power mobile part, and the data suggests it is appropriate for tasks where power draw is the primary constraint, not raw throughput.

FAQ

Q: Which processor has more cores and threads?

A: The AMD Ryzen Threadripper 1950X has 16 cores and 32 threads. The Intel Atom x7405C has 4 cores and 4 threads.

Q: What is the biggest benchmark margin between the two?

A: The largest recorded delta is in Cinebench R15 single-core, where the Threadripper scores 333 versus the Atom’s 62, a 437.1% advantage. Multi-core R15 shows a 429.6% gap (2362 versus 446).

Q: How do the two compare in Cinebench R23?

A: In R23 multi-core, the Threadripper scores 23440 and the Atom scores 4435, a 428.5% delta. In R23 single-core, the Threadripper scores 3309 and the Atom scores 626, a 428.6% delta.

Q: Do the processors have the same memory configuration?

A: No. The Threadripper supports DDR4 with a quad-channel memory bus and 85.3 GB/s bandwidth. The Atom supports DDR4 and DDR5 with a single-channel memory bus and 38.4 GB/s bandwidth.

Q: Are both processors currently in production?

A: Yes, both the AMD Ryzen Threadripper 1950X and the Intel Atom x7405C have an "Active" production status in the database.

Q: What are the launch MSRP values?

A: The AMD Ryzen Threadripper 1950X has a launch MSRP of $999. The Intel Atom x7405C has a launch MSRP of $57.

Architecture Differences

The two processors come from fundamentally different design philosophies. The AMD Ryzen Threadripper 1950X is built on the Zen architecture, codenamed Whitehaven, and belongs to the Ryzen Threadripper generation. It uses a 14 nm process node from GlobalFoundries, with a transistor count of 9,600 million and a die size of 2x 213 mm². The Intel Atom x7405C uses the Amston Lake architecture with Gracemont cores, built on a 10 nm process node from Intel. The database records no transistor count or die size for the Atom.

Cache layouts differ significantly. Both parts share a per-core L1 cache of 96 KB, but the similarities end there. The Threadripper has 512 KB of L2 per core and a 32 MB L3 cache. The Atom has 2 MB of shared L2 and 6 MB of shared L3. The Threadripper’s larger L3 pool is consistent with a desktop high-end processor, while the Atom’s smaller shared caches reflect its mobile, low-power positioning.

The memory controllers are also fundamentally different. The Threadripper uses a quad-channel DDR4 interface with 85.3 GB/s of bandwidth. The Atom uses a single-channel DDR4 or DDR5 interface with 38.4 GB/s of bandwidth. Neither part supports ECC memory, according to the database. The Atom also lists PCIe Gen 3 with 9 lanes (CPU only), while the Threadripper has no PCIe field recorded. The Threadripper has no integrated graphics, and the Atom lists integrated graphics as "N/A". The Threadripper’s socket is AMD Socket SP3r2, while the Atom uses Intel BGA 1264.

Specification Differences

The two parts differ in nearly every major specification field. The Threadripper has 16 cores and 32 threads, versus the Atom’s 4 cores and 4 threads. Base clocks are 3.40 GHz for the Threadripper and 1.70 GHz for the Atom. Boost clocks are 4.00 GHz and 3.40 GHz, respectively. TDP is a major differentiator: 180 W for the Threadripper, 12 W for the Atom.

The Threadripper uses AMD Socket SP3r2, while the Atom uses Intel BGA 1264. The Threadripper’s process node is 14 nm from GlobalFoundries; the Atom’s is 10 nm from Intel. The Threadripper has 9,600 million transistors and a 2x 213 mm² die size; the Atom has no recorded values for either. L1 cache is the same at 96 KB per core, but L2 differs: 512 KB per core for the Threadripper versus 2 MB shared for the Atom. L3 also differs: 32 MB for the Threadripper versus 6 MB shared for the Atom.

Memory support is DDR4 for the Threadripper and DDR4/DDR5 for the Atom. The memory bus is quad-channel for the Threadripper and single-channel for the Atom. Memory bandwidth is 85.3 GB/s versus 38.4 GB/s. The Threadripper has no integrated graphics and no PCIe field; the Atom has integrated graphics listed as "N/A" and PCIe Gen 3, 9 lanes (CPU only). The Threadripper has an unlocked multiplier; the Atom does not. Release dates are 2017-08-09 for the Threadripper and 2024-04-07 for the Atom.

Head-to-Head Benchmarks

The head-to-head data is entirely one-sided. The AMD Ryzen Threadripper 1950X wins all 6 recorded benchmarks, with no wins for the Intel Atom x7405C. The margins are consistent across every test, all in the 428% to 437% range. This suggests a fixed performance ratio rather than workload-specific variability.

In Cinebench R15, the Threadripper scores 2362 in multi-core versus the Atom’s 446, a 429.6% delta. Single-core shows 333 versus 62, a 437.1% delta. The single-core margin is actually slightly larger than the multi-core margin, which is notable because the Atom’s boost clock of 3.40 GHz is close to the Threadripper’s base clock of 3.40 GHz and only 0.60 GHz below its boost clock. The data indicates that architectural efficiency and core design dominate clock speed in this comparison.

Cinebench R20 repeats the pattern. Multi-core: 9844 versus 1862, a 428.7% delta. Single-core: 1389 versus 262, a 430.2% delta. The deltas remain nearly identical to R15, reinforcing that the performance gap is stable across different render workloads and scoring scales.

Cinebench R23, the most recent rendering benchmark in the set, shows the same story. Multi-core: 23440 versus 4435, a 428.5% delta. Single-core: 3309 versus 626, a 428.6% delta. The Threadripper’s multi-core score of 23440 is over five times the Atom’s 4435. Even the single-core score of 3309 is more than five times the Atom’s 626.

The database also records average benchmark scores and nearest rivals for context. The Threadripper has an average benchmark score of 6231 and sits at the 62nd percentile of all CPUs. Its nearest rivals include the AMD Ryzen 3 3100U at 6247 (delta -0.3%), the AMD EPYC 7272 at 6186 (delta 0.7%), the Intel Core i9-7940X at 6147 (delta 1.4%), and the AMD EPYC 7501 at 6128 (delta 1.7%). The Atom x7405C has an average benchmark score of 6568 and also sits at the 62nd percentile. Its nearest rivals include the Intel Core i5-13500E at 6586 (delta -0.3%), the Intel Core i9-7960X at 6533 (delta 0.5%), the Intel Core i9-10940X at 6605 (delta -0.6%), and the Intel Pentium Gold G6405 at 6605 (delta -0.6%). These percentile values are identical, but the underlying workloads and scores are entirely different.

The Atom does have Passmark scores that are not in the head-to-head set. Data compression scores 56317, data encryption 4004, extended instructions 2771, find prime numbers 22, floating point math 9063, integer math 14669, multithread 5218, physics 460, random string sorting 8089, and single thread 1675. These numbers are not comparable to the Threadripper because the Threadripper has no corresponding Passmark entries in the database. The absence of overlapping Passmark tests means no direct conclusion can be drawn from those fields. The recorded head-to-head results, however, are unambiguous: the Threadripper 1950X is the superior processor in every measured rendering benchmark.