AMD Ryzen 7 9850X3D vs Intel Core Ultra 5 245KF Comparison

Where Each One Wins

The benchmark split between the AMD Ryzen 7 9850X3D and the Intel Core Ultra 5 245KF is not a simple clean sweep in either direction. The Intel chip takes 10 of the 15 recorded head-to-head tests, while the AMD processor wins 5. That raw count, however, hides a meaningful division of labor that aligns with the two chips' architectural personalities.

Intel's Core Ultra 5 245KF dominates the Cinebench suite, which is heavily threaded rendering work. The margin is decisive in every single Cinebench test, from a 3.8% gap in R15 multicore to a crushing 56.9% deficit for AMD in R23 singlecore. The Intel part also wins floating point math by 37.7%, data encryption by 31.5%, multithread throughput by 4.2%, and random string sorting by 9.9%. The single-thread PassMark test is essentially a tie, with Intel ahead by only 0.2%.

AMD's five victories cluster in different territory. The Ryzen 7 9850X3D wins integer math by a substantial 24.6%, physics by 39.1%, prime number finding by 4.6%, extended instructions by 3.6%, and data compression by 3.1%. These are workloads that reward the AMD chip's large shared cache and its Zen 5 core design. The physics win is particularly notable, as it suggests the AMD part holds an edge in simulation-style workloads that are sensitive to memory latency and cache capacity.

The split in the PassMark suite is instructive. AMD wins the integer and physics workloads, while Intel wins the floating point and encryption workloads. Users who know their primary applications can use this division to make a clear choice. The Intel chip is the stronger general-purpose and rendering processor, while the AMD chip has specific strengths in integer-heavy and physics-based tasks.

Architecture Differences

The two processors come from opposite ends of the design spectrum. The AMD Ryzen 7 9850X3D is an 8-core, 16-thread part built on the Zen 5 architecture with the Granite Ridge codename. It uses TSMC's 4 nm process node and contains 8,315 million transistors on a 70.6 mm² die. The Intel Core Ultra 5 245KF is a 14-core, 14-thread part based on the Arrow Lake architecture with the Arrow Lake-S codename. It uses TSMC's 3 nm node and packs 17,800 million transistors on a 243 mm² die.

The core count difference is the most obvious headline. Intel offers 14 cores but no hyperthreading, meaning 14 threads total. AMD offers 8 cores with simultaneous multithreading, yielding 16 threads. In raw thread count, the AMD part actually has more threads, but the Intel part has 6 additional physical cores. The benchmark data shows that Intel's extra physical cores win out in heavily parallel rendering workloads.

Cache configurations differ dramatically. The AMD chip has 80 KB of L1 cache per core, 1 MB of L2 per core, and a massive 96 MB of shared L3 cache. The Intel chip has 192 KB of L1 per core, 3 MB of L2 per core, but only 24 MB of shared L3. The AMD part's 96 MB L3 is four times larger than Intel's 24 MB, which explains its strong showing in cache-sensitive workloads like physics and integer math.

Clock speeds tell a similar story of different priorities. The AMD part has a 4.70 GHz base clock and a 5.60 GHz boost clock. The Intel part has a 4.20 GHz base and a 5.20 GHz boost. AMD runs higher clocks, yet Intel wins most single-thread tests by large margins, which points to architectural efficiency advantages in the Arrow Lake design rather than raw clock speed.

Both chips are unlocked for overclocking and support DDR5 memory over a dual-channel bus. AMD lists ECC memory support, while Intel does not. The AMD part has integrated Radeon Graphics, while the Intel part has no integrated graphics. Memory bandwidth favors Intel at 102.4 GB/s versus 89.6 GB/s for AMD. Both use PCIe Gen 5, with AMD offering 24 lanes and Intel 20 lanes. The AMD chip uses the AM5 socket, while Intel uses Socket 1851. The process node difference (4 nm for AMD, 3 nm for Intel) and the transistor count difference (8,315 million versus 17,800 million) reflect two very different physical designs.

Head-to-Head Benchmarks

The Cinebench results are the starkest divergence in the entire dataset. In Cinebench R23 multicore, the Intel Core Ultra 5 245KF scores 36,647 against the AMD Ryzen 7 9850X3D's 22,807, a 37.8% advantage for Intel. The R23 singlecore test is even more lopsided: Intel scores 5,173 against AMD's 2,228, a 56.9% gap. The R15 tests follow the same pattern, with Intel ahead by 34.2% in singlecore and 3.8% in multicore. These results indicate that the Intel part is substantially stronger in both single-threaded and multi-threaded Cinebench workloads.

The PassMark suite offers a more balanced picture. AMD wins integer math with a score of 123,140 versus Intel's 98,854, a 24.6% margin. AMD also takes physics by a wide 39.1% margin, scoring 4,171 against Intel's 2,998. The prime number test goes to AMD by 4.6%, extended instructions by 3.6%, and data compression by 3.1%.

Intel answers in floating point math with a 131,546 score against AMD's 81,998, a 37.7% advantage. Data encryption goes to Intel by 31.5%, with scores of 33,381 versus 22,856. Random string sorting favors Intel by 9.9%, and the multithread test goes to Intel by 4.2%, with scores of 43,110 versus 41,318. The single-thread PassMark test is nearly identical: Intel scores 4,715 against AMD's 4,704, a 0.2% edge.

The overall average benchmark scores place the AMD part at 58,386 and the Intel part at 55,093. AMD's nearest rivals include the Intel Xeon Platinum 8260M at 58,323 (0.1% behind) and the Intel Xeon w5-2545 at 58,504 (0.2% ahead). Intel's nearest rivals include the AMD Ryzen 9 9900X3D at 54,762 (0.6% behind) and the Intel Core 7 253PQE at 55,919 (1.5% ahead). The percentile ranks are close, with AMD at the 92nd percentile and Intel at the 91st percentile of all CPUs.

FAQ

Q: Which processor is faster in Cinebench R23 multicore?

A: The Intel Core Ultra 5 245KF scores 36,647 in Cinebench R23 multicore, which is 37.8% ahead of the AMD Ryzen 7 9850X3D's 22,807.

Q: Does the AMD Ryzen 7 9850X3D win any benchmark tests?

A: Yes, the AMD chip wins 5 of the 15 head-to-head tests: integer math by 24.6%, physics by 39.1%, prime number finding by 4.6%, extended instructions by 3.6%, and data compression by 3.1%.

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

A: The AMD Ryzen 7 9850X3D has 8 cores and 16 threads, while the Intel Core Ultra 5 245KF has 14 cores and 14 threads.

Q: How do the cache sizes compare?

A: The AMD part has 80 KB of L1 per core, 1 MB of L2 per core, and 96 MB of shared L3. The Intel part has 192 KB of L1 per core, 3 MB of L2 per core, and 24 MB of shared L3.

Q: Which processor has the higher boost clock?

A: The AMD Ryzen 7 9850X3D has a 5.60 GHz boost clock, while the Intel Core Ultra 5 245KF has a 5.20 GHz boost clock.

Q: Which chip has integrated graphics?

A: The AMD Ryzen 7 9850X3D includes Radeon Graphics, while the Intel Core Ultra 5 245KF has no integrated graphics.

The Verdict

The data points to a clear but nuanced conclusion. The Intel Core Ultra 5 245KF is the stronger overall processor for rendering, floating point math, encryption, and general multithreaded throughput. Its 37.8% lead in Cinebench R23 multicore and 56.9% lead in R23 singlecore make it the obvious choice for anyone running Cinebench-style workloads or similar heavily threaded applications. The Intel chip also holds a 91st percentile rank and sits close to rivals like the AMD Ryzen 9 9900X3D and the Intel Core Ultra 5 245K.

The AMD Ryzen 7 9850X3D is the better pick for integer-heavy and physics-based workloads. Its 39.1% physics win and 24.6% integer math win are substantial margins that suggest real-world advantages in simulation, scientific computing, and integer-heavy data processing. The 96 MB of shared L3 cache and the 92nd percentile rank support its position as a specialized performer. Its nearest rivals include the Intel Xeon Platinum 8260M and the Intel Xeon w5-2545, both within a fraction of a percent in average score.

For a buyer choosing between these two, the decision hinges on workload. The Intel Core Ultra 5 245KF wins the majority of tests and offers the broader utility. The AMD Ryzen 7 9850X3D wins fewer tests but wins them by large margins in specific areas. The Intel chip's 14 physical cores and 3 nm process give it a structural advantage in parallel rendering, while the AMD chip's large cache and higher clocks serve cache-sensitive integer workloads. Neither part is a universal winner, but the Intel part covers more ground overall.