AMD Ryzen 7 9850X3D vs Intel Core Ultra X7 358H Comparison

The AMD Ryzen 7 9850X3D and Intel Core Ultra X7 358H occupy different corners of the processor market, yet their benchmark results invite direct comparison. The Ryzen 7 9850X3D is a desktop part built for high sustained throughput, while the Core Ultra X7 358H is a mobile processor designed for efficiency in compact systems. The recorded data shows a clear overall winner in raw performance, but the Intel chip delivers specific strengths in encryption and floating-point workloads that prevent a one-sided narrative.

FAQ

Q: Which processor has the higher average benchmark score?

A: The AMD Ryzen 7 9850X3D records an average benchmark score of 58386, placing it in the 92nd percentile of all CPUs. The Intel Core Ultra X7 358H averages 40967, which sits in the 87th percentile. The AMD part leads by roughly 42% in aggregate performance.

Q: How do the two chips compare in multi-core rendering?

A: In Cinebench R23 multi-core, the Ryzen 7 9850X3D scores 22807 versus 18747 for the Core Ultra X7 358H, a 21.7% advantage for AMD. The gap narrows slightly in Cinebench R15 multi-core, where AMD leads 3551 to 3027, a 17.3% difference.

Q: Does the Intel chip win any benchmark categories?

A: Yes, the Core Ultra X7 358H wins two recorded tests. It leads in PassMark data encryption with 26046 versus 22856 for AMD, a 12.2% margin. It also wins PassMark floating-point math with 103842 against 81998, a 21% advantage for Intel.

Q: What is the difference in single-core performance?

A: The Ryzen 7 9850X3D leads in single-core tests across the board. In Cinebench R23 single-core, AMD scores 2228 versus 2080 for Intel, a 7.1% edge. PassMark single-thread shows a larger gap, with AMD at 4704 and Intel at 4124, a 14.1% difference.

Q: Which processor has more cores?

A: The Intel Core Ultra X7 358H has 16 cores, while the AMD Ryzen 7 9850X3D has 8 cores. However, both processors support 16 threads, meaning the AMD chip uses simultaneous multithreading while the Intel chip does not.

Q: What memory types do the two processors support?

A: The AMD Ryzen 7 9850X3D supports DDR5 memory with dual-channel access and a bandwidth of 89.6 GB/s. The Intel Core Ultra X7 358H supports LPDDR5X memory, also dual-channel, but with a higher bandwidth of 153.6 GB/s.

Architecture Differences

The two processors represent fundamentally different design philosophies. The AMD Ryzen 7 9850X3D uses the Zen 5 architecture on the Granite Ridge codename, built on a 4 nm process at TSMC. The chip contains 8,315 million transistors on a 70.6 mm² die. It is a desktop part for AMD Socket AM5, with a 120 W TDP and an unlocked multiplier. The Intel Core Ultra X7 358H uses the Panther Lake codename from the Core Ultra Series 3, fabricated on Intel's 3 nm process. It is a mobile part on Intel BGA 2540 with a 25 W TDP and a locked multiplier.

Cache hierarchies differ substantially. The AMD chip provides 80 KB of L1 cache per core, 1 MB of L2 per core, and 96 MB of shared L3 cache. The Intel chip offers 192 KB of L1 per core, 3 MB of L2 per core, but only 18 MB of shared L3. This gives AMD a massive 78 MB advantage in last-level cache, which directly impacts workloads that benefit from large working sets resident on-chip.

Clock speeds also diverge. The Ryzen 7 9850X3D runs a base clock of 4.70 GHz with a boost of 5.60 GHz. The Core Ultra X7 358H operates at 1.90 GHz base and 4.80 GHz boost. The AMD part's higher clocks, combined with its larger cache, explain much of its benchmark dominance.

Memory and I/O capabilities differ. The AMD processor uses DDR5 with ECC support, while the Intel part uses LPDDR5X without ECC. PCIe connectivity is another major split: AMD provides Gen 5 with 24 lanes from the CPU, while Intel offers Gen 5 with only 4 lanes. Integrated graphics also differ, with AMD shipping Radeon Graphics and Intel using Arc B390. The Intel chip's memory bandwidth advantage, 153.6 GB/s versus 89.6 GB/s, does not translate into overall performance leadership, as the benchmark data shows.

The Verdict

The benchmark data indicates that the AMD Ryzen 7 9850X3D is the stronger processor for the vast majority of workloads. It wins 13 of the 15 head-to-head comparisons, including all Cinebench tests, all PassMark integer and multithread tests, and every single-thread measurement. The largest margins come in PassMark integer math, where AMD leads by 48.1%, and PassMark extended instructions, where AMD is ahead by 44%. The Ryzen part also dominates data compression with a 42.7% lead, physics simulation with a 38.1% lead, and prime number finding with a 29.1% lead.

The Intel Core Ultra X7 358H is the better choice only for specific floating-point and encryption workloads. Its 21% advantage in floating-point math and 12.2% lead in data encryption are the sole bright spots. For general-purpose computing, rendering, compression, and single-threaded tasks, the AMD chip is consistently faster.

Architecturally, the decision is clear. The AMD part is a desktop processor with a 120 W TDP, designed for systems with robust cooling and power delivery. The Intel part is a 25 W mobile chip, intended for laptops and compact devices where power efficiency matters more than peak performance. The data shows that the Ryzen 7 9850X3D delivers desktop-class performance across the board, while the Core Ultra X7 358H offers competitive results in select categories within a much lower power envelope.

Specification Differences

The two processors differ across nearly every specification field. Core count: AMD has 8 cores, Intel has 16. Thread count is identical at 16, but AMD achieves this via multithreading on fewer physical cores. Base clocks: AMD runs at 4.70 GHz, Intel at 1.90 GHz. Boost clocks: AMD reaches 5.60 GHz, Intel tops out at 4.80 GHz. TDP: AMD draws 120 W, Intel draws 25 W.

Socket and form factor: AMD uses Socket AM5, a desktop platform; Intel uses BGA 2540, a soldered mobile package. Process technology: AMD uses 4 nm from TSMC; Intel uses 3 nm from its own foundry. Transistor count and die size are recorded for AMD (8,315 million transistors, 70.6 mm²) but not listed for Intel.

Cache configuration: AMD provides 80 KB L1 per core, 1 MB L2 per core, and 96 MB shared L3. Intel provides 192 KB L1 per core, 3 MB L2 per core, and 18 MB shared L3. Memory: AMD supports DDR5 with ECC; Intel supports LPDDR5X without ECC. Memory bandwidth: AMD records 89.6 GB/s; Intel records 153.6 GB/s. PCIe: AMD offers Gen 5 with 24 lanes; Intel offers Gen 5 with 4 lanes. Integrated graphics: AMD uses Radeon Graphics; Intel uses Arc B390.

Other differences include the unlocked multiplier on the AMD chip versus a locked multiplier on Intel, and the launch MSRP of $499 for the AMD part, while no launch MSRP is recorded for Intel. The AMD processor released on 2026-01-28, while the Intel chip released on 2026-01-04. Part numbers also differ: AMD lists 100-000001973, Intel lists SA4RAQ9ET.

Head-to-Head Benchmarks

The largest single win for the AMD Ryzen 7 9850X3D comes in PassMark integer math, where it scores 123140 against 83147 for the Intel chip, a 48.1% advantage. This test measures general integer arithmetic throughput, a proxy for everyday computing tasks. The AMD chip also dominates PassMark extended instructions, scoring 39272 versus 27274, a 44% lead, indicating superior vector and specialized instruction handling.

Data compression shows another decisive AMD win: 474501 versus 332508, a 42.7% margin. This workload benefits directly from the AMD chip's 96 MB of L3 cache, which keeps more data on-die during compression operations. Physics simulation follows a similar pattern, with AMD at 4171 and Intel at 3021, a 38.1% lead. Prime number finding is also AMD-favored, 435 versus 337, a 29.1% difference.

In multithreaded tests, the AMD chip leads consistently. Cinebench R23 multi-core shows 22807 versus 18747, a 21.7% margin. PassMark multithread shows 41318 versus 33802, a 22.2% lead. Random string sorting goes to AMD by 23.3%, with scores of 49764 and 40357. Cinebench R15 multi-core is closer but still AMD-favored: 3551 versus 3027, a 17.3% edge.

Single-core performance favors AMD across the board. Cinebench R23 single-core shows 2228 versus 2080, a 7.1% difference, while Cinebench R15 single-core shows 343 versus 301.5, a 13.8% lead. PassMark single-thread and its duplicate single-thread test both record 4704 for AMD and 4124 for Intel, a 14.1% advantage. These results indicate that the AMD chip's higher clock speeds translate directly into faster single-threaded execution.

The Intel Core Ultra X7 358H secures two wins. PassMark floating-point math shows 103842 for Intel versus 81998 for AMD, a 21% margin. This suggests the Intel chip's floating-point execution units are more efficient or better utilized despite the lower clock speeds. PassMark data encryption also goes to Intel, 26046 versus 22856, a 12.2% lead, indicating stronger cryptographic instruction throughput.

The overall record stands at 13 wins for AMD and 2 for Intel. The average benchmark scores reinforce this hierarchy: AMD at 58386 places it among the top 8% of all CPUs, while Intel at 40967 sits in the top 13%. The nearest rivals for AMD include the Intel Xeon Platinum 8260M with an average score of 58323 and a 0.1% difference, and the Intel Core i9-14900 at 58115, a 0.5% gap. For Intel, the closest competitors are the AMD Ryzen AI 5 PRO 440 at 41208 and the Intel Core Ultra 7 356H at 41215, both within 0.6% of its score.

The data confirms that the AMD Ryzen 7 9850X3D is the superior performer in nearly every measured category. The Intel Core Ultra X7 358H retains specific advantages in floating-point math and encryption, but these do not offset the AMD chip's broad dominance in rendering, compression, integer math, and single-threaded tasks. For users prioritizing raw throughput, the Ryzen part is the clear choice; for those needing low-power mobile operation with competitive performance in select workloads, the Core Ultra X7 offers a viable alternative.