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

Head-to-Head Benchmarks

The recorded data for the AMD Ryzen 7 9850X3D and the Intel Core Ultra 5 245HX shows 15 direct comparisons, with the AMD processor taking 10 wins and the Intel taking 5. The biggest single margin belongs to AMD in the PassMark physics test, where the 9850X3D scores 4171 against Intel's 2526, a 65.1% advantage. That result reflects a substantial lead in a workload that is heavily dependent on memory latency and cache behavior, areas where the AMD part's 96 MB shared L3 cache is decisive.

In multi-core Cinebench tests, the results split oddly. The older Cinebench R15 multi-core test favors AMD: 3551 versus 3261, a 8.9% edge. However, in Cinebench R23 multi-core, Intel reverses the outcome dramatically: 32358 versus 22807, giving Intel a 29.5% lead. This divergence suggests that the R15 test responds to the AMD cache structure while the R23 test rewards the Intel part's higher core count and newer instruction scheduling. Intel's 14 cores and 14 threads (no hyper-threading) outperform AMD's 8 cores and 16 threads in the sustained R23 render.

Single-core results are unambiguous. Intel wins Cinebench R15 single-core with 460 versus AMD's 343, a 25.4% margin. In Cinebench R23 single-core, Intel scores 4568 against AMD's 2228, a 51.2% gap. These are the largest deltas in either direction across the entire benchmark set. The Intel part's boost clock of 5.10 GHz and 3 nm process node deliver per-thread performance that AMD's 5.60 GHz boost cannot match in these tests, likely due to architectural differences in branch prediction and vector execution.

PassMark integer math is another strong AMD win: 123140 versus 92150, a 33.6% advantage. This confirms that the AMD architecture handles integer-heavy loops and hashing routines efficiently, likely due to the larger L2 cache per core (1 MB versus Intel's 3 MB per core, but with only 8 cores the total effective cache per thread differs). AMD also wins PassMark data compression: 474501 versus 393071, a 20.7% margin. The 96 MB L3 cache lets the AMD part keep more working set in the cache, reducing memory traffic during compression.

Intel fights back in floating-point math: 120735 versus 81998, a 32.1% lead. This is notable because it indicates the Intel Arrow Lake cores have wider or better-scheduled FP units. Intel also wins data encryption: 30022 versus 22856, a 23.9% margin, showing stronger AES-NI or similar instruction throughput. The extended instructions test goes to AMD: 39272 versus 31212, a 25.8% margin, meaning AMD's SIMD and specialized instruction paths are faster for integer-heavy extensions.

Other AMD wins include find prime numbers (435 versus 359, 21.2%), multi-thread PassMark (41318 versus 38069, 8.5%), random string sorting (49764 versus 47616, 4.5%), and both single-thread PassMark entries (4704 versus 4481, 5% each). The random string sorting delta is small, indicating that memory allocation patterns are similar, but AMD still edges ahead. The PassMark single-thread result is interesting because it contradicts the Cinebench single-core results: AMD leads by 5%, yet Intel leads by 25% to 51% in Cinebench single-core. This suggests that PassMark's single-thread workload is more cache-friendly, while Cinebench's ray-tracing kernels favor Intel's IPC.

Looking at the nearest rivals for context, the AMD 9850X3D has an average benchmark score of 58386, placing it between the Intel Xeon Platinum 8260M (58323, 0.1% behind) and the Intel Xeon w5-2545 (58504, 0.2% ahead). Its percentile is 92 among all CPUs. The Intel Ultra 5 245HX averages 48287, with its closest rival being the Intel Core Ultra 5 235A (48201, 0.2% behind) and the AMD Ryzen AI Max PRO 380 (48171, 0.2% behind). Its percentile is 90. So AMD sits at a higher absolute performance tier, but Intel's part is also within the top decile.

The Verdict

The data shows two distinct performance profiles. The AMD Ryzen 7 9850X3D wins 10 of 15 direct benchmarks, with its largest margins in physics (65.1%), integer math (33.6%), extended instructions (25.8%), data compression (20.7%), and prime number finding (21.2%). These are all workloads that benefit from large caches and low-latency memory access. The AMD part also wins the multi-thread PassMark aggregate (8.5%) and the older Cinebench R15 multi-core (8.9%).

The Intel Core Ultra 5 245HX wins the other 5 benchmarks, but with a different pattern. Its Cinebench R23 multi-core win is 29.5%, its single-core wins are 25.4% and 51.2%, its floating-point win is 32.1%, and its encryption win is 23.9%. These are all workloads that reward raw compute throughput per core or high-frequency operation without heavy cache dependency.

For a user prioritizing database-style integer workloads, compression, physics simulation, or any task where the working set fits into 96 MB of L3 cache, the AMD part is the stronger choice based on the recorded deltas. The 65.1% physics lead alone justifies that direction. For a user prioritizing single-threaded rendering (Cinebench R23), floating-point scientific code, or encryption, the Intel part delivers 25% to 51% higher scores in those specific tests.

However, the absolute average benchmark scores tell a separate story. AMD's 58386 average eclipses Intel's 48287 by over 20%. That difference is not a head-to-head delta but a reflection of overall performance breadth. The AMD part sits at the 92nd percentile of all CPUs, while Intel sits at the 90th. The nearest rivals for AMD include the Xeon w5-2545 and Core i9-14900, both desktop or workstation parts. The nearest rivals for Intel include the Core Ultra 5 235A and Ryzen AI Max PRO 380, which are mobile or low-power parts. This suggests that the Intel 245HX, despite its mobile BGA socket, competes at a lower absolute tier.

The verdict from the data is straightforward: the AMD Ryzen 7 9850X3D is the higher-performing processor overall, with a wider set of wins and a higher average score. The Intel Core Ultra 5 245HX is the specialist for single-core and floating-point workloads, but it loses the overall benchmark count and the aggregate scores. A user who needs maximum Cinebench R23 performance or FP math should choose Intel. A user who needs balanced multi-threaded performance, physics, integer math, or data compression should choose AMD.

Architecture Differences

The two processors differ fundamentally in design. AMD uses 8 cores and 16 threads with simultaneous multithreading, while Intel uses 14 cores and 14 threads without hyper-threading. AMD's base clock is 4.70 GHz with a boost of 5.60 GHz. Intel's base clock is 3.10 GHz with a boost of 5.10 GHz. AMD's TDP is 120 watts, Intel's is 55 watts. This explains why AMD can sustain higher clocks but also why Intel fits into a mobile thermal envelope.

The process nodes differ: AMD uses TSMC's 4 nm process, Intel uses TSMC's 3 nm process. The transistor counts reflect the complexity difference: AMD packs 8,315 million transistors on a 70.6 mm² die, while Intel packs 17,800 million on a 243 mm² die. The larger Intel die holds more cores and more cache logic, but the smaller AMD die allows higher clock speeds per core.

Cache hierarchies are also distinct. AMD provides 80 KB of L1 per core, 1 MB of L2 per core, and 96 MB of shared L3. Intel provides 192 KB of L1 per core, 3 MB of L2 per core, and only 24 MB of shared L3. The Intel L3 is a quarter of AMD's. This explains the AMD wins in cache-heavy workloads like physics and data compression, where the 96 MB L3 absorbs more of the working set. Intel's larger per-core L2 (3 MB versus 1 MB) helps with per-thread locality, but the total L3 capacity is far lower.

Memory support is similar: both use DDR5 and dual-channel memory buses. AMD's memory bandwidth is listed at 89.6 GB/s, while Intel's is 102.4 GB/s. Intel's higher memory bandwidth supports its floating-point and encryption wins, where data streams must be moved quickly. AMD supports ECC memory, Intel does not. AMD's PCIe implementation is Gen 5 with 24 lanes, Intel's is Gen 5 with 20 lanes. Both have integrated graphics: AMD's Radeon Graphics versus Intel's Arc Xe-LPG Graphics 48EU.

The sockets and market segments differ. AMD uses Socket AM5, a desktop socket, and is marked as a Desktop segment. Intel uses BGA 2114, a soldered mobile socket, and is marked as Mobile. This is a critical distinction: the Intel part cannot be upgraded in a desktop system, while the AMD part fits into standard AM5 motherboards. AMD's multiplier is unlocked, Intel's is also unlocked, but the BGA socket limits practical overclocking.

Release dates and production status: AMD released on 2026-01-28, Intel on 2025-01-12. Both are Active. AMD's launch MSRP is $499. Intel has no launch MSRP listed. AMD's part number is 100-000001973, Intel's is SRVFM. AMD's codename is Granite Ridge, Intel's is Arrow Lake-HX. AMD belongs to the 9000 series, Intel to Core Ultra Series 2.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core Ultra 5 245HX has 14 cores and 14 threads. The AMD Ryzen 7 9850X3D has 8 cores and 16 threads. Intel uses more physical cores, AMD uses simultaneous multithreading to double its thread count.

Q: Why does AMD win the PassMark physics test by such a large margin?

A: AMD scores 4171 versus Intel's 2526, a 65.1% delta. The physics test is highly dependent on cache size and memory latency. AMD's 96 MB shared L3 cache is four times larger than Intel's 24 MB, allowing more physics state to reside in cache.

Q: How do the single-core Cinebench results compare?

A: Intel wins decisively. In Cinebench R15 single-core, Intel scores 460 versus AMD's 343, a 25.4% margin. In Cinebench R23 single-core, Intel scores 4568 versus AMD's 2228, a 51.2% margin. This is Intel's strongest category.

Q: What is the average benchmark score difference?

A: AMD's average benchmark score is 58386, which places it at the 92nd percentile. Intel's average is 48287, at the 90th percentile. AMD leads by roughly 20% in average score.

Q: Does Intel support ECC memory?

A: No. The Intel Core Ultra 5 245HX does not support ECC memory. The AMD Ryzen 7 9850X3D supports ECC memory.

Q: Which processor has a higher boost clock?

A: AMD has a boost clock of 5.60 GHz. Intel has a boost clock of 5.10 GHz. However, Intel still wins single-core benchmarks due to architectural efficiency, not clock speed.

Where Each One Wins

The AMD Ryzen 7 9850X3D wins in workloads that leverage large caches, integer arithmetic, and multi-threaded throughput without extreme floating-point demands. Specific wins include: PassMark physics (65.1% lead), integer math (33.6%), extended instructions (25.8%), data compression (20.7%), prime number finding (21.2%), multi-thread PassMark (8.5%), random string sorting (4.5%), and single-thread PassMark (5%). It also wins Cinebench R15 multi-core (8.9%). These are typical of database operations, compression tools, physics engines, and general productivity suites that benefit from the 96 MB L3 cache.

The Intel Core Ultra 5 245HX wins in workloads that require high per-core floating-point throughput, encryption, and modern renderers. Specific wins include: Cinebench R23 multi-core (29.5%), Cinebench R23 single-core (51.2%), Cinebench R15 single-core (25.4%), floating-point math (32.1%), and data encryption (23.9%). These are typical of ray-tracing renders, scientific simulations with heavy FP math, and disk or network encryption tasks. Intel's 3 nm process and higher memory bandwidth (102.4 GB/s versus 89.6 GB/s) support these wins.

The split is clean: AMD for integer and cache-bound tasks, Intel for floating-point and single-threaded tasks. The Intel part also wins the newer Cinebench R23 multi-core, which suggests that its 14 physical cores, despite no hyper-threading, outperform AMD's 8 cores with SMT in sustained AVX-512-like workloads. However, the AMD part's overall average score (58386) remains higher, and its 92nd percentile versus Intel's 90th percentile confirms a broader performance envelope. For a user with a specific workload, the choice depends on which category that workload falls into, based on the recorded benchmark deltas.