CPU Comparison

The Intel Xeon W-2135 and Intel Atom x7213RE occupy opposite ends of Intel’s product spectrum, and the benchmark data reflects that chasm clearly. Across every shared Cinebench test, the Xeon W-2135 wins by a margin of roughly 444% to 448%, making the Atom x7213RE unsuitable for any compute-heavy workload measured here. The Xeon W-2135 delivers 12,205 in Cinebench R23 multi-core versus 2,244 for the Atom, and 1,723 versus 316 in single-core R23. The data shows a 55th percentile standing for both CPUs versus all CPUs, but that is an artifact of the benchmark database averaging; the head-to-head results are unambiguous. The Xeon W-2135 is the only choice for rendering, compilation, or any task that scales with threads and clock speed. The Atom x7213RE, with its 9 W TDP, 2 cores, and 2 threads, is a low-power embedded or mobile part; its data shows it is not competitive in Cinebench, though it does have integrated graphics and a lower launch MSRP of $42 versus $835 for the Xeon. Strictly from the data, the verdict is: pick the Xeon W-2135 for performance, pick the Atom x7213RE only if the workload is absent from these benchmarks and power draw is the priority.

Where Each One Wins

The benchmark wins are entirely one-sided. The Xeon W-2135 wins all five head-to-head tests: Cinebench R15 multi-core (1,230 vs 226), R20 multi-core (5,126 vs 942), R20 single-core (723 vs 132), R23 multi-core (12,205 vs 2,244), and R23 single-core (1,723 vs 316). The deltaPct values range from 443.9% to 447.7% in favor of the Xeon, meaning the Xeon is roughly 5.4 to 5.5 times faster in each test. The Atom x7213RE has zero wins in the head-to-head set.

The Atom does have benchmark results the Xeon lacks: PassMark tests including data compression (27,860), data encryption (1,871), extended instructions (1,375), find prime numbers (19), floating point math (4,885), integer math (7,058), multithread (2,641), physics (246), random string sorting (3,306), and single thread (1,601). These are not comparable to Xeon scores because the Xeon has no corresponding entries in the pack. For workloads represented by those PassMark subtests, the Atom has measurable output, but the data does not allow a direct comparison. The Xeon’s wins are in Cinebench, which is a rendering benchmark; the Atom’s wins are non-existent. For any Cinebench-style workload, the Xeon is the clear pick. For other tasks, the Atom’s data stands alone, but its 2-core/2-thread configuration and single-channel memory bus suggest it is not designed for heavy parallel work.

Architecture Differences

The two processors come from different architectural eras and design philosophies. The Xeon W-2135 uses Skylake-W architecture on a 14 nm process, with a die size of 484 mm². It has 6 cores and 12 threads, with base and boost clocks of 3.70 GHz and 4.50 GHz. Its cache layout is 64 KB L1 per core, 1 MB L2 per core, and 8.25 MB shared L3. The Atom x7213RE uses Amston Lake architecture with Gracemont cores on a 10 nm process; the die size is not listed. It has 2 cores and 2 threads, with a 2.00 GHz base clock and 3.40 GHz boost. Cache is 96 KB L1 per core, 2 MB shared L2, and 6 MB shared L3. The Atom has a smaller per-core L1 but a larger shared L2 relative to its core count.

Memory support differs substantially: the Xeon uses DDR4 with a quad-channel bus and 85.3 GB/s bandwidth, while the Atom supports both DDR4 and DDR5 but only via a single-channel bus with 38.4 GB/s bandwidth. The Xeon supports ECC memory; the Atom does not. PCIe lanes also differ: the Xeon provides Gen 3 with 48 lanes (CPU only), while the Atom provides Gen 3 with 9 lanes (CPU only). The Atom has integrated graphics (UHD Graphics 16EU); the Xeon has no integrated graphics listed. The Xeon is a server/workstation part on Socket 2066, while the Atom is a mobile part on BGA 1264. The Xeon is end-of-life, released in August 2017; the Atom is active, released in April 2024. The Xeon’s TDP is 140 W, the Atom’s is 9 W. Neither CPU has an unlocked multiplier.

FAQ

Q: Which CPU is faster in multi-core Cinebench R23?

A: The Intel Xeon W-2135, with a score of 12,205 versus the Atom x7213RE’s 2,244, a delta of 443.9%.

Q: Does the Atom x7213RE win any head-to-head benchmark?

A: No. The head-to-head data shows 5 wins for the Xeon W-2135 and 0 for the Atom x7213RE.

Q: What is the TDP difference between the two?

A: The Xeon W-2135 has a TDP of 140 W, while the Atom x7213RE has a TDP of 9 W.

Q: Does the Atom support ECC memory?

A: No. The Atom x7213RE lists ECC memory as false; the Xeon W-2135 supports ECC.

Q: What are the memory bus widths?

A: The Xeon W-2135 uses a quad-channel memory bus with 85.3 GB/s bandwidth. The Atom x7213RE uses a single-channel bus with 38.4 GB/s bandwidth.

Q: Which CPU has integrated graphics?

A: The Atom x7213RE has UHD Graphics 16EU. The Xeon W-2135 lists no integrated graphics.

Head-to-Head Benchmarks

The largest percentage win for the Xeon W-2135 is in Cinebench R20 single-core, where it scores 723 against the Atom’s 132, a 447.7% delta. The smallest margin is in Cinebench R23 multi-core, at 443.9% (12,205 vs 2,244). The multi-core R15 and R20 tests both show a 444.2% delta, with scores of 1,230 vs 226 and 5,126 vs 942 respectively. Cinebench R23 single-core shows a 445.3% delta, with 1,723 vs 316.

These deltas are consistent across all tests, indicating a uniform performance gap that does not vary by workload type within Cinebench. The Xeon’s advantage is slightly larger in single-core (447.7% and 445.3%) than in multi-core (443.9% and 444.2%), but the difference is small. The Atom’s single-core R20 score of 132 is less than one-fifth of the Xeon’s 723. In multi-core R23, the Atom’s 2,244 is less than one-fifth of the Xeon’s 12,205. No benchmark in the head-to-head set shows the Atom within 400% of the Xeon. The data does not include any PassMark tests for the Xeon, so those Atom scores cannot be compared directly.

Specification Differences

| Specification | Intel Xeon W-2135 | Intel Atom x7213RE |

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

| Cores | 6 | 2 |

| Threads | 12 | 2 |

| Base Clock | 3.70 GHz | 2.00 GHz |

| Boost Clock | 4.50 GHz | 3.40 GHz |

| TDP | 140 W | 9 W |

| Socket | Intel Socket 2066 | Intel BGA 1264 |

| Architecture | Skylake | Amston Lake |

| Codename | Skylake-W | Amston Lake |

| Generation | Xeon W (Skylake-W) | Atom (Gracemont) |

| Process Node | 14 nm | 10 nm |

| Die Size | 484 mm² | Not listed |

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

| L2 Cache | 1 MB (per core) | 2 MB (shared) |

| L3 Cache | 8.25 MB (shared) | 6 MB (shared) |

| Memory Support | DDR4 | DDR4, DDR5 |

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

| Memory Bandwidth | 85.3 GB/s | 38.4 GB/s |

| ECC Memory | Yes | No |

| PCIe | Gen 3, 48 Lanes (CPU only) | Gen 3, 9 Lanes (CPU only) |

| Integrated Graphics | None | UHD Graphics 16EU |

| Market Segment | Server/Workstation | Mobile |

| Production Status | End-of-life | Active |

| Release Date | 2017-08-28 | 2024-04-07 |

| Launch MSRP | $835 | $42 |

| Multiplier Unlocked | No | No |

| Part Number | SR3LN | SRNEP |

The Xeon W-2135 has triple the cores and six times the threads of the Atom x7213RE. Its base clock is 1.70 GHz higher and boost clock is 1.10 GHz higher. The Xeon’s L3 cache is 2.25 MB larger, while the Atom has a 1 MB larger shared L2. The Xeon’s memory bandwidth is more than double the Atom’s, at 85.3 GB/s versus 38.4 GB/s, and it has five times more PCIe lanes. The Atom is on a smaller 10 nm process node, but the Xeon has a larger die. The Atom supports DDR5 in addition to DDR4; the Xeon supports only DDR4. The Atom has integrated graphics; the Xeon does not. The Xeon supports ECC; the Atom does not. The production statuses are opposite: the Xeon is end-of-life, the Atom is active.