Intel Core Ultra 7 270K Plus vs Intel Xeon 654 Comparison

The Intel Core Ultra 7 270K Plus and the Intel Xeon 654 represent two distinct philosophies in modern processor design, despite both being active Intel parts. The Core Ultra 7 270K Plus is a desktop-focused, 24-core part built on a 3 nm TSMC process, while the Xeon 654 is a server/workstation chip with 18 cores and 36 threads on Intel’s 5 nm process. Benchmark results show a split decision: the Core Ultra 7 270K Plus wins 10 of the 17 head-to-head tests, while the Xeon 654 takes 7. However, the magnitude of those wins varies dramatically, with the Xeon achieving a 66.9% lead in one single-core test, while the Core Ultra 7 counters with a 57.7% lead in a prime-number workload. This makes the choice highly workload-dependent, and the data below clarifies where each processor excels.

Where Each One Wins

The Core Ultra 7 270K Plus dominates in tests that reward high clock speeds and per-core efficiency. It wins all single-threaded PassMark tests, posting a 34.1% advantage in both `passmark_single_thread` and `passmark_singlethread` (5068 vs 3778). It also leads in `cinebench_cinebench_r20_singlecore` by 11.7% (3453 vs 3092). The desktop chip’s strength extends to floating-point math, where it scores 229491 versus the Xeon’s 163093, a 40.7% margin. Encryption is another clear win: 59097 vs 40675, a 45.3% gap. The Core Ultra 7 also takes `passmark_multithread` (68574 vs 61353, +11.8%), `passmark_find_prime_numbers` (615 vs 390, +57.7%), and `passmark_random_string_sorting` (96945 vs 82828, +17.0%). In Cinebench R15 multicore, it leads by 26.6% (6656 vs 5256), and in R20 multicore by 11.7% (24461 vs 21903). This is a processor that excels at bursty, latency-sensitive tasks and workloads that leverage high single-core throughput.

The Xeon 654 wins in areas that stress memory bandwidth and sustained multi-threaded throughput. Its most significant victory is in `cinebench_cinebench_r23_singlecore`, where it scores 7362 versus 2439, a staggering 66.9% lead. This is mirrored in `cinebench_cinebench_r15_singlecore`, where it wins 742 vs 354, a 52.3% margin. The Xeon also takes `cinebench_cinebench_r23_multicore` with 52150 vs 44253, a 15.1% lead. In integer math, it scores 207745 vs 175986, a 15.3% advantage. The Xeon further wins `passmark_physics` (5596 vs 4064, +27.4%), `passmark_data_compression` (818902 vs 804322, +1.8%), and `passmark_extended_instructions` (63539 vs 63506, +0.1%). The pattern is clear: the Xeon’s 36 threads and eight-channel memory system give it an edge in integer-heavy, highly parallel workloads and in specific Cinebench iterations that appear to favor its architecture.

Architecture Differences

The two chips diverge fundamentally in silicon. The Core Ultra 7 270K Plus uses Arrow Lake Refresh, built on a 3 nm process at TSMC with 17,800 million transistors on a 243 mm² die. It has 24 cores and 24 threads, meaning no hyperthreading. Its cache hierarchy includes 192 KB of L1 per core, 3 MB of L2 per core, and 36 MB of shared L3. Memory support is DDR5 over a dual-channel bus, yielding 115.2 GB/s of bandwidth. The Xeon 654, codenamed Granite Rapids, is a 5 nm Intel part with 18 cores and 36 threads, enabling simultaneous multithreading. It packs 112 KB L1 and 2 MB L2 per core, with a much larger 72 MB shared L3. Its memory subsystem is eight-channel DDR5, providing 409.6 GB/s — a 3.5x bandwidth advantage. The Xeon also offers 128 PCIe Gen 5 lanes versus the Core Ultra 7’s 20 lanes. Both support ECC memory, but the Xeon lacks integrated graphics, while the Core Ultra 7 includes an Arc Xe-LPG Graphics 64EU iGPU. The Xeon uses Intel Socket 4710, whereas the Core Ultra 7 uses Socket 1851.

Head-to-Head Benchmarks

The most striking result is in Cinebench R23 single-core, where the Xeon 654 leads by 66.9% (7362 vs 2439). This is a massive outlier, especially since the Core Ultra 7 has a higher boost clock of 5.50 GHz versus the Xeon’s 4.80 GHz. The R15 single-core test shows a similar trend with the Xeon leading 52.3% (742 vs 354). These results suggest the Xeon’s architecture handles certain instruction paths more efficiently, despite lower clocks. Conversely, in PassMark single-thread, the Core Ultra 7 wins decisively by 34.1% (5068 vs 3778), showing that single-core performance is not uniformly in the Xeon’s favor. The Core Ultra 7’s 24 cores without hyperthreading still manage a 26.6% win in Cinebench R15 multicore (6656 vs 5256) and an 11.7% win in R20 multicore (24461 vs 21903). However, in R23 multicore, the Xeon reverses course with a 15.1% win (52150 vs 44253). This inconsistency across Cinebench versions points to different memory and cache behaviors under sustained loads.

The PassMark suite further clarifies the split. The Core Ultra 7 wins floating-point math by 40.7% (229491 vs 163093) and integer math is a Xeon win by 15.3% (207745 vs 175986). The Core Ultra 7’s 57.7% lead in `passmark_find_prime_numbers` (615 vs 390) highlights its per-core strength, while the Xeon’s 27.4% win in `passmark_physics` (5596 vs 4064) shows its thread scaling. Data compression is nearly a tie, with the Xeon ahead by just 1.8% (818902 vs 804322), and extended instructions are a virtual dead heat (63539 vs 63506, +0.1%). The Core Ultra 7’s 45.3% win in data encryption (59097 vs 40675) and 17.0% win in random string sorting (96945 vs 82828) round out its dominance in memory-latency-sensitive tasks. Overall, the Core Ultra 7 wins 10 tests, but the Xeon’s 7 wins include some of the largest margins in the entire comparison.

FAQ

Q: Which processor has higher multi-core performance in Cinebench R23?

A: The Intel Xeon 654 wins Cinebench R23 multicore with a score of 52150, which is 15.1% higher than the Core Ultra 7 270K Plus’s 44253.

Q: Is the Core Ultra 7 270K Plus better at encryption tasks?

A: Yes, the data shows a clear advantage. The Core Ultra 7 270K Plus scores 59097 in PassMark data encryption, while the Xeon 654 scores 40675, a 45.3% difference in favor of the Core Ultra 7.

Q: Does the Xeon 654 have more memory bandwidth?

A: Yes, the Xeon 654 uses an eight-channel memory bus providing 409.6 GB/s, while the Core Ultra 7 270K Plus uses a dual-channel bus with 115.2 GB/s.

Q: Which processor has more cores and threads?

A: The Core Ultra 7 270K Plus has 24 cores and 24 threads. The Xeon 654 has 18 cores and 36 threads, meaning the Xeon has fewer physical cores but more threads due to simultaneous multithreading.

Q: How do they compare in single-threaded PassMark performance?

A: The Core Ultra 7 270K Plus wins decisively with a score of 5068, which is 34.1% higher than the Xeon 654’s 3778.

Q: Which processor supports ECC memory?

A: Both processors support ECC memory, as indicated in the specifications for each.

Specification Differences

The Core Ultra 7 270K Plus and Xeon 654 differ in nearly every major physical and architectural specification. The Core Ultra 7 uses 24 cores with 24 threads, while the Xeon uses 18 cores with 36 threads. Base clocks are 3.70 GHz for the Core Ultra 7 and 3.10 GHz for the Xeon; boost clocks are 5.50 GHz and 4.80 GHz, respectively. The desktop chip has a 125 W TDP versus the Xeon’s 200 W. Process nodes differ: 3 nm TSMC for the Core Ultra 7, 5 nm Intel for the Xeon. The Core Ultra 7 has 17,800 million transistors on a 243 mm² die; the Xeon’s transistor count is not listed, but its die size is 2x 598 mm². Cache configurations are distinct: the Core Ultra 7 has 192 KB L1 and 3 MB L2 per core, with 36 MB shared L3; the Xeon has 112 KB L1 and 2 MB L2 per core, with 72 MB shared L3. Memory channels are dual for the Core Ultra 7 and eight for the Xeon, leading to 115.2 GB/s versus 409.6 GB/s bandwidth. PCIe lanes are 20 for the Core Ultra 7 and 128 for the Xeon. The Core Ultra 7 includes integrated Arc Xe-LPG Graphics 64EU; the Xeon has none. Sockets are Intel Socket 1851 versus Intel Socket 4710. The Core Ultra 7 was released on 2026-03-10 with a launch MSRP of $299, while the Xeon 654 was released on 2026-02-01 with a launch MSRP of $1199. Both have unlocked multipliers.