AMD Ryzen 7 8840HX vs Intel Xeon Platinum 8270 Comparison

The AMD Ryzen 7 8840HX and Intel Xeon Platinum 8270 represent two radically different approaches to high-performance computing, with the former being a mobile processor from the 8000 series and the latter a server/workstation part based on Cascade Lake. Benchmark results show a near-total split in strengths, with the AMD part dominating in single-threaded and latency-sensitive workloads, while the Intel part leverages its massive core count to win in throughput-heavy tasks. Their average benchmark scores are nearly identical, with the Ryzen 7 8840HX scoring 71797 and the Xeon Platinum 8270 scoring 71370, placing both in the 94th percentile of all CPUs.

Head-to-Head Benchmarks

The most striking result in the head-to-head comparison is the single-core performance gap, where the AMD Ryzen 7 8840HX wins decisively. In the Cinebench R23 single-core test, the Intel Xeon Platinum 8270 scores 4032 against the AMD part's 1857, resulting in a -53.9% delta for the Ryzen. However, this is a case where the benchmark favors the Intel architecture; in the PassMark single-thread test, the Ryzen 7 8840HX scores 3958 versus the Xeon's 2325, a 70.2% advantage for AMD. This divergence highlights how different testing methodologies can produce opposite conclusions, but the data clearly shows the Ryzen's superior per-core performance in most scenarios.

Looking at multi-threaded performance, the Intel Xeon Platinum 8270 takes the lead in the classic Cinebench R23 multi-core benchmark, scoring 28561 against the Ryzen's 25265, an 11.5% margin. This is expected given the Xeon's 26 cores and 52 threads versus the AMD's 12 cores and 24 threads. However, in the PassMark multithread test, the tables turn dramatically: the Ryzen 7 8840HX scores 41732 against the Xeon's 29986, a 39.2% advantage for AMD. This suggests that the Ryzen's Zen 4 architecture handles the specific workload patterns of that test far more efficiently than the older Cascade Lake design.

The data encryption test is the single largest victory for either side, with the AMD Ryzen 7 8840HX scoring 29919 versus the Intel Xeon Platinum 8270's 8798, a massive 240.1% delta. This indicates that the Ryzen's modern instruction set and memory subsystem are significantly better suited for cryptographic workloads. Similarly, in the find prime numbers test, AMD wins with a score of 304 against Intel's 84, a 261.9% advantage, showcasing the Ryzen's integer performance and cache efficiency. The physics test also favors AMD heavily, with a 2185 score versus 903 for Intel, a 142% difference.

The Intel Xeon Platinum 8270, conversely, dominates in several data-processing benchmarks. In data compression, Intel scores 728144 versus AMD's 496427, a 31.8% lead. The extended instructions test shows a 28.6% Intel advantage, with scores of 51191 and 36527 respectively. Random string sorting also goes to Intel, with a 27.7% margin (80208 vs 57971). The floating-point math test gives Intel a 12.8% win (99432 vs 86747), while integer math shows a closer 8.6% Intel lead (160322 vs 146506). Overall, the Xeon wins 7 of the 13 head-to-head benchmarks, while the Ryzen takes 6, but the magnitude of AMD's victories is often larger than Intel's.

Architecture Differences

The architectural divide between these two processors is vast, stemming from different design philosophies and manufacturing eras. The AMD Ryzen 7 8840HX is built on a 5 nm process at TSMC, with a transistor count of 13,140 million across a dual-die design with each die measuring 71 mm². In contrast, the Intel Xeon Platinum 8270 uses a 14 nm process from Intel's own fabs, with 8,000 million transistors. This process advantage allows the Ryzen to achieve significantly higher clock speeds: its base clock is 2.90 GHz and boost clock is 5.10 GHz, compared to the Xeon's 2.70 GHz base and 4.00 GHz boost.

The core configuration also differs fundamentally. The Ryzen 7 8840HX has 12 cores and 24 threads, while the Xeon Platinum 8270 has 26 cores and 52 threads. The Ryzen's cache hierarchy is more modern, with 64 KB of L1 per core, 1 MB of L2 per core, and a substantial 64 MB of shared L3 cache. The Xeon also has 64 KB of L1 per core and 1 MB of L2 per core, but its L3 cache is only 35.75 MB shared. This larger L3 cache on the AMD part is likely a key factor in its superior performance in encryption and physics tests, where data reuse is critical.

Memory support is another major differentiator. The Ryzen 7 8840HX supports DDR5 memory on a dual-channel bus, with a theoretical memory bandwidth of 83.2 GB/s. The Xeon Platinum 8270 supports DDR4 memory, and while its memory bus configuration is not specified in the data, its older memory standard is a clear disadvantage. The Ryzen also supports PCIe Gen 5 with 28 lanes (CPU only), whereas the Xeon's PCIe support is not listed. The Ryzen includes integrated Radeon 610M graphics, while the Xeon has no integrated graphics, which is typical for server processors.

The Ryzen 7 8840HX is a mobile processor on AMD Socket FL1, with a TDP of 55 watts, and its multiplier is unlocked. The Xeon Platinum 8270 is a server/workstation part on Intel Socket 3647, with a TDP of 205 watts, and its multiplier is locked. The production status of the Ryzen is listed as "Active," while the Xeon's is not specified. The Ryzen also supports ECC memory as false, whereas the Xeon supports ECC memory as true, reflecting their different target markets.

The Verdict

The data presents a clear choice based on workload requirements. For single-threaded performance and tasks that benefit from high clock speeds and modern instruction sets, the AMD Ryzen 7 8840HX is the superior processor. Its 70.2% lead in the PassMark single-thread test and 240.1% advantage in data encryption make it the obvious pick for software development, scientific computing with heavy use of encryption, and any workload that is latency-bound. The 142% lead in physics simulation further reinforces this, suggesting strong performance in gaming physics and similar real-time calculations.

For multi-threaded throughput in traditional server workloads, the Intel Xeon Platinum 8270 holds the edge. Its 11.5% lead in Cinebench R23 multi-core and 31.8% advantage in data compression indicate that it is better suited for batch processing, database operations, and content rendering that scales across many cores. The Xeon's 28.6% lead in extended instructions also makes it attractive for workloads that use SIMD instructions heavily, such as video encoding or scientific simulations that are well-parallelized.

The near-identical average benchmark scores and percentile rankings mean that neither processor is categorically better. The Ryzen 7 8840HX achieves its results with a 55-watt TDP, while the Xeon requires 205 watts, making the AMD part far more power-efficient per unit of performance. However, the Xeon's ECC memory support and server-grade platform make it more appropriate for mission-critical environments where data integrity is paramount. Ultimately, the choice depends on whether the user prioritizes per-core speed and efficiency or raw core count and server-specific features.

Specification Differences

The following specifications differ between the two processors:

• Cores: AMD Ryzen 7 8840HX has 12 cores; Intel Xeon Platinum 8270 has 26 cores.
• Threads: AMD Ryzen 7 8840HX has 24 threads; Intel Xeon Platinum 8270 has 52 threads.
• Base Clock: 2.90 GHz (AMD) vs 2.70 GHz (Intel).
• Boost Clock: 5.10 GHz (AMD) vs 4.00 GHz (Intel).
• TDP: 55 watts (AMD) vs 205 watts (Intel).
• Socket: AMD Socket FL1 vs Intel Socket 3647.
• Architecture: Zen 4 (AMD) vs Cascade Lake (Intel).
• Codename: Dragon Range (AMD) vs Cascade Lake-SP (Intel).
• Process Node: 5 nm (AMD) vs 14 nm (Intel).
• Foundry: TSMC (AMD) vs Intel (Intel).
• Transistors: 13,140 million (AMD) vs 8,000 million (Intel).
• L3 Cache: 64 MB shared (AMD) vs 35.75 MB shared (Intel).
• Memory Support: DDR5 (AMD) vs DDR4 (Intel).
• Memory Bandwidth: 83.2 GB/s (AMD) vs not specified (Intel).
• ECC Memory: False (AMD) vs True (Intel).
• PCIe: Gen 5, 28 Lanes (AMD) vs not specified (Intel).
• Integrated Graphics: Radeon 610M (AMD) vs none (Intel).
• Market Segment: Mobile (AMD) vs Server/Workstation (Intel).
• Production Status: Active (AMD) vs not specified (Intel).
• Release Date: 2025-04-22 (AMD) vs 2018-12-10 (Intel).
• Multiplier Unlocked: True (AMD) vs False (Intel).

FAQ

Q: Which processor has a higher single-thread performance?

A: The AMD Ryzen 7 8840HX wins the PassMark single-thread test with a score of 3958, which is 70.2% higher than the Intel Xeon Platinum 8270's score of 2325. However, in the Cinebench R23 single-core test, the Intel Xeon scores 4032 versus the AMD's 1857, a 53.9% difference in Intel's favor.

Q: Which CPU is better for multi-threaded workloads?

A: The Intel Xeon Platinum 8270 wins the Cinebench R23 multi-core test with 28561 versus 25265 for the AMD Ryzen 7 8840HX, an 11.5% margin. Conversely, the AMD wins the PassMark multithread test with 41732 against the Intel's 29986, a 39.2% advantage.

Q: How do the two compare in data encryption performance?

A: The AMD Ryzen 7 8840HX is overwhelmingly faster, scoring 29919 in the PassMark data encryption test compared to 8798 for the Intel Xeon Platinum 8270, a 240.1% difference in AMD's favor.

Q: What are the core and thread counts for each processor?

A: The AMD Ryzen 7 8840HX has 12 cores and 24 threads. The Intel Xeon Platinum 8270 has 26 cores and 52 threads.

Q: Which CPU supports ECC memory?

A: The Intel Xeon Platinum 8270 supports ECC memory (true), while the AMD Ryzen 7 8840HX does not (false).

Q: What is the TDP of each processor?

A: The AMD Ryzen 7 8840HX has a TDP of 55 watts. The Intel Xeon Platinum 8270 has a TDP of 205 watts.