AMD Ryzen 7 9850X3D vs Intel Core Ultra 3 205 Comparison

Where Each One Wins

The benchmark split between the AMD Ryzen 7 9850X3D and Intel Core Ultra 3 205 is heavily lopsided. Of the 15 head-to-head comparisons recorded in the database, the AMD part wins 14, while the Intel part wins exactly one. The AMD processor dominates across nearly every workload category, including multi-threaded rendering, data compression, encryption, extended instruction sets, prime number finding, floating-point math, integer math, physics simulations, random string sorting, and single-threaded PassMark tests. The single Intel victory comes in Cinebench R23 single-core, where the Core Ultra 3 205 posts a higher score than the Ryzen 7 9850X3D.

The AMD Ryzen 7 9850X3D is the clear choice for heavily parallel workloads. Its Cinebench R15 multi-core score of 3551 versus 2001 for the Intel part represents a 77.5% advantage, and its PassMark multi-thread score of 41318 versus 26167 is 57.9% ahead. The AMD chip also leads by 124.9% in PassMark integer math (123140 versus 54755) and by 106.9% in PassMark physics (4171 versus 2016). These are not marginal differences; they indicate a fundamentally different performance class in multi-threaded applications.

For single-threaded performance, the picture is more nuanced. The AMD Ryzen 7 9850X3D wins the PassMark single-thread test by a slim 2.8% margin (4704 versus 4575). However, the Intel Core Ultra 3 205 wins Cinebench R23 single-core by 20.5% (2803 versus 2228). This split suggests workload-specific behavior: the Intel chip excels in certain instruction patterns typical of Cinebench R23's single-core render test, while the AMD chip holds a narrow edge in the broader PassMark single-thread aggregate.

The data compression and encryption results reinforce the AMD advantage. PassMark data compression shows 474501 for AMD versus 260651 for Intel, an 82% lead. Data encryption shows 22856 versus 18772, a 21.8% lead. Extended instructions show 39272 versus 22578, a 73.9% lead. These are significant margins across diverse computational tasks.

Architecture Differences

The two processors belong to different architectural generations and design philosophies. The AMD Ryzen 7 9850X3D is part of the 9000 series, built on Zen 5 architecture with the Granite Ridge codename. It uses a 4 nm process node from TSMC, contains 8,315 million transistors on a 70.6 mm² die, and operates on AMD Socket AM5. The Intel Core Ultra 3 205 is part of the Core Ultra Series 2, built on Arrow Lake architecture with the Arrow Lake-S codename. It uses a 3 nm process node from TSMC, contains 17,800 million transistors on a 243 mm² die, and operates on Intel Socket 1851.

Core and thread counts differ substantially. Both have 8 cores, but the AMD processor supports 16 threads via simultaneous multithreading, while the Intel processor has 8 threads with no multithreading. This explains much of the multi-core performance gap. The AMD chip's base clock is 4.70 GHz with a boost clock of 5.60 GHz, while the Intel chip runs at 3.80 GHz base and 4.90 GHz boost. The AMD processor has a TDP of 120 watts, while the Intel processor is rated at 57 watts.

Cache configurations are also very different. The AMD Ryzen 7 9850X3D has 80 KB of L1 cache per core, 1 MB of L2 cache per core, and 96 MB of shared L3 cache. The Intel Core Ultra 3 205 has 192 KB of L1 cache per core, 3 MB of L2 cache per core, and only 15 MB of shared L3 cache. The AMD chip's 96 MB L3 cache is six times larger than the Intel chip's 15 MB, which contributes to its strong performance in cache-sensitive workloads like data compression and physics.

Memory support is similar in type but differs in bandwidth. Both support DDR5 memory with dual-channel buses. The AMD processor has a recorded memory bandwidth of 89.6 GB/s, while the Intel processor has a higher 102.4 GB/s. The AMD chip supports ECC memory, the Intel chip does not. PCIe connectivity also differs: the AMD processor provides Gen 5 with 24 lanes (CPU only), while the Intel processor provides Gen 5 with 20 lanes (CPU only). The AMD chip includes Radeon Graphics as integrated graphics, while the Intel chip uses Arc Xe-LPG Graphics 16EU.

The AMD processor has an unlocked multiplier, enabling overclocking, while the Intel multiplier is locked. The AMD part was released on 2026-01-28 with a launch MSRP of $499. The Intel part was released on 2025-07-31 with a launch MSRP of $140. Both are active production desktop processors.

Head-to-Head Benchmarks

The largest AMD victory in the head-to-head set is PassMark integer math, where the Ryzen 7 9850X3D scores 123140 against the Core Ultra 3 205's 54755, a 124.9% advantage. This is followed by PassMark physics at 106.9% (4171 versus 2016) and PassMark data compression at 82% (474501 versus 260651). These three tests show the AMD chip at more than double the Intel chip's performance in some cases.

Cinebench R15 multi-core shows a 77.5% lead for AMD (3551 versus 2001). PassMark extended instructions shows a 73.9% lead (39272 versus 22578). PassMark random string sorting shows a 60.1% lead (49764 versus 31083). PassMark multi-thread shows a 57.9% lead (41318 versus 26167). PassMark find prime numbers shows a 62.3% lead (435 versus 268). These five tests all show AMD leads between roughly 58% and 74%.

Moderate AMD leads appear in PassMark data encryption at 21.8% (22856 versus 18772) and Cinebench R15 single-core at 21.6% (343 versus 282). The smallest AMD lead is in PassMark single-thread at 2.8% (4704 versus 4575). PassMark floating-point math shows a 9.1% AMD lead (81998 versus 75136). Cinebench R23 multi-core shows a 14.9% AMD lead (22807 versus 19856).

The single Intel victory is Cinebench R23 single-core, where the Core Ultra 3 205 scores 2803 against the Ryzen 7 9850X3D's 2228, a 20.5% margin. This is notable because the AMD chip wins the PassMark single-thread test by a small margin, yet loses the Cinebench R23 single-core test by a large one. The Intel chip's higher boost clock of 4.90 GHz combined with its different core design appears to favor the specific workload in Cinebench R23's single-core rendering.

The average benchmark scores place these processors in different performance tiers. The AMD Ryzen 7 9850X3D has an average benchmark score of 58386 and sits at the 92nd percentile across all CPUs. Its nearest rivals include the Intel Xeon Platinum 8260M at 58323 (0.1% lower), Intel Xeon w5-2545 at 58504 (0.2% higher), Intel Core i9-14900 at 58115 (0.5% lower), and AMD Ryzen AI 9 HX 470 at 58826 (0.7% higher). The Intel Core Ultra 3 205 has an average benchmark score of 31473 and sits at the 82nd percentile. Its nearest rivals include the Intel Core 7 240H at 31483 (0% difference), AMD Ryzen 9 5980HX at 31495 (0.1% higher), Intel Core Ultra 5 225H at 31508 (0.1% higher), and Intel Core i5-13500 at 31510 (0.1% higher).

The Verdict

The data shows two processors in different performance classes. The AMD Ryzen 7 9850X3D's average benchmark score of 58386 is roughly 85% higher than the Intel Core Ultra 3 205's 31473. The AMD chip sits at the 92nd percentile of all CPUs, while the Intel chip sits at the 82nd percentile. In every recorded head-to-head test except Cinebench R23 single-core, the AMD processor outperforms the Intel processor, often by wide margins.

Users who run multi-threaded workloads, compile code, process data, or run physics simulations should select the AMD Ryzen 7 9850X3D. Its 16 threads, 96 MB L3 cache, and 5.60 GHz boost clock deliver results that are 50% to 125% faster than the Intel part in the most demanding tests. The AMD chip also wins the single-thread PassMark aggregate, making it the more versatile processor overall.

Users who prioritize the specific Cinebench R23 single-core workload, or who need a lower-power processor with a 57 watt TDP, may find the Intel Core Ultra 3 205 suitable. Its 20.5% lead in that one test is real, but it comes with losses of 14.9% in Cinebench R23 multi-core, 57.9% in PassMark multi-thread, and 82% in data compression. The Intel chip also has higher memory bandwidth at 102.4 GB/s, but this does not translate into benchmark wins outside that single test.

The Intel Core Ultra 3 205's nearest rivals include laptop and desktop parts like the Intel Core 7 240H and Core Ultra 5 225H, all within 0.1% of its average score. The AMD Ryzen 7 9850X3D's nearest rivals include server and high-end desktop parts like the Xeon Platinum 8260M and Core i9-14900, all within 0.7% of its average score. This placement confirms that the AMD processor competes in a higher tier, while the Intel processor competes in a lower tier.

FAQ

Q: Which processor wins more head-to-head benchmarks?

A: The AMD Ryzen 7 9850X3D wins 14 of the 15 head-to-head benchmark comparisons. The Intel Core Ultra 3 205 wins only one, Cinebench R23 single-core.

Q: How large is the AMD lead in multi-threaded performance?

A: In Cinebench R15 multi-core, the AMD chip leads by 77.5% (3551 versus 2001). In Cinebench R23 multi-core, the lead is 14.9% (22807 versus 19856). In PassMark multi-thread, the lead is 57.9% (41318 versus 26167).

Q: Does the Intel processor win any single-core test?

A: Yes. The Intel Core Ultra 3 205 wins Cinebench R23 single-core by 20.5% (2803 versus 2228). However, the AMD Ryzen 7 9850X3D wins the PassMark single-thread test by 2.8% (4704 versus 4575).

Q: What is the biggest performance gap between the two?

A: The largest gap is in PassMark integer math, where the AMD processor scores 123140 versus the Intel processor's 54755, a 124.9% advantage. PassMark physics is second at 106.9% (4171 versus 2016).

Q: How do the cache sizes compare?

A: The AMD Ryzen 7 9850X3D has 96 MB of shared L3 cache, while the Intel Core Ultra 3 205 has 15 MB of shared L3 cache. The AMD chip also has 1 MB L2 per core, while the Intel chip has 3 MB L2 per core.

Q: What are the average benchmark scores for each processor?

A: The AMD Ryzen 7 9850X3D has an average benchmark score of 58386 at the 92nd percentile. The Intel Core Ultra 3 205 has an average benchmark score of 31473 at the 82nd percentile.