AMD Ryzen 7 9850X3D vs Intel Core Ultra 7 265T Comparison

The AMD Ryzen 7 9850X3D and the Intel Core Ultra 7 265T represent two very different strategies for desktop performance. The AMD part is a high-frequency, 8-core chip built for gaming and latency-sensitive tasks, while the Intel part is a 20-core, efficiency-focused processor with a 35W TDP. Across 15 recorded head-to-head benchmark tests, the AMD Ryzen 7 9850X3D secured 10 wins, while the Intel Core Ultra 7 265T took 5, but the margins in each direction reveal distinct strengths. The database shows the AMD chip holding a 92nd percentile rank among all CPUs, while the Intel chip sits at the 90th percentile.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core Ultra 7 265T has 20 cores and 20 threads. The AMD Ryzen 7 9850X3D has 8 cores and 16 threads.

Q: What is the difference in their base clock speeds?

A: The AMD Ryzen 7 9850X3D has a base clock of 4.70 GHz, while the Intel Core Ultra 7 265T has a base clock of 1.50 GHz.

Q: Which chip has the larger L3 cache?

A: The AMD Ryzen 7 9850X3D has 96 MB of shared L3 cache. The Intel Core Ultra 7 265T has 30 MB of shared L3 cache.

Q: How do they compare in single-thread performance?

A: In the Cinebench R23 single-core test, the Intel Core Ultra 7 265T scores 4455, which is 50% higher than the AMD Ryzen 7 9850X3D's score of 2228. However, in the Passmark single-thread test, the AMD chip wins with 4704 versus 4338, an 8.4% advantage.

Q: Which CPU has a higher TDP?

A: The AMD Ryzen 7 9850X3D has a TDP of 120W. The Intel Core Ultra 7 265T has a TDP of 35W.

Q: Do both processors support DDR5 memory?

A: Yes, both the AMD Ryzen 7 9850X3D and the Intel Core Ultra 7 265T support DDR5 memory. The AMD chip has a memory bandwidth of 89.6 GB/s, while the Intel chip has 102.4 GB/s.

Architecture Differences

The two processors are built on different process nodes and designs. The AMD Ryzen 7 9850X3D uses the Zen 5 architecture on a 4 nm process from TSMC, with a die size of 70.6 mm² and 8,315 million transistors. The Intel Core Ultra 7 265T uses the Arrow Lake architecture on a 3 nm process from TSMC, with a die size of 243 mm² and 17,800 million transistors. The Intel chip is significantly larger and denser, but the AMD chip runs at much higher clock speeds.

The core counts differ sharply. AMD provides 8 cores and 16 threads, while Intel provides 20 cores and 20 threads. The Intel part does not use hyper-threading, so its thread count equals its core count. The AMD chip has 80 KB of L1 cache per core and 1 MB of L2 cache per core, while the Intel chip has 192 KB of L1 per core and 3 MB of L2 per core. The AMD chip carries a much larger L3 cache at 96 MB shared, compared to Intel's 30 MB shared. The AMD chip also has an unlocked multiplier, while the Intel chip is locked.

Memory support is similar in type, with both using DDR5 in a dual-channel configuration. The Intel chip has a higher memory bandwidth at 102.4 GB/s versus 89.6 GB/s for AMD. The AMD chip supports ECC memory, while the Intel chip does not. PCIe lanes also differ: AMD provides Gen 5 with 24 lanes (CPU only), while Intel provides Gen 5 with 20 lanes (CPU only). Integrated graphics differ as well, with AMD using Radeon Graphics and Intel using Arc Xe-LPG Graphics 64EU. The AMD chip has a launch MSRP of $499, while the Intel chip has a launch MSRP of $384.

Head-to-Head Benchmarks

The data shows a clear split in performance categories. In Cinebench R15 multicore, the AMD Ryzen 7 9850X3D scores 3551 against Intel's 3180, a 11.7% advantage. However, in Cinebench R23 multicore, the Intel Core Ultra 7 265T reverses the result with a score of 31558 versus 22807, a 27.7% lead. The single-core Cinebench R23 test strongly favors Intel, with a score of 4455 versus 2228, a 50% margin. The Cinebench R15 single-core test also favors Intel, with 449 versus 343, a 23.6% difference.

In Passmark tests, the AMD chip dominates several workloads. Data compression shows AMD at 474501 versus 370158, a 28.2% win. Extended instructions go to AMD by 37.3%, with scores of 39272 versus 28609. Find prime numbers favors AMD by 35.1%, with 435 versus 322. Integer math goes to AMD with 123140 versus 104943, a 17.3% margin. Multithread performance favors AMD at 41318 versus 37084, an 11.4% lead. Physics shows the largest AMD advantage at 74.4%, with 4171 versus 2391. Random string sorting goes to AMD by 12.1%, with 49764 versus 44400. Passmark single-thread favors AMD by 8.4%, with 4704 versus 4338.

The Intel chip wins in fewer but substantial categories. Floating point math shows Intel at 129817 versus 81998 for AMD, a 36.8% margin. Data encryption favors Intel at 29687 versus 22856, a 23% difference. The Cinebench R23 multicore and both single-core Cinebench tests also go to Intel, with the single-core R23 being the largest overall win at 50%. The average benchmark score for the AMD chip is 58386, while the Intel chip averages 47697.

The Verdict

The data indicates that the AMD Ryzen 7 9850X3D is the stronger choice for integer-heavy, physics-based, and single-threaded Passmark workloads, along with multithreaded Passmark performance. Its 10 wins out of 15 tests include the most decisive margin of the comparison at 74.4% in physics. The Intel Core Ultra 7 265T, however, delivers superior results in floating point math, encryption, and both Cinebench single-core tests, plus a large multicore Cinebench R23 win. The Intel chip's 50% lead in Cinebench R23 single-core is the largest margin in either direction.

For users relying on Cinebench as a primary metric, the Intel Core Ultra 7 265T is the clear winner, particularly in single-core tasks where it scores 4455 versus 2228. For users focused on Passmark suites, the AMD chip wins 8 of the 11 Passmark tests, including data compression, integer math, and physics. The AMD chip also holds a higher average benchmark score of 58386 versus 47697, which places it in the 92nd percentile compared to Intel's 90th percentile. The Intel chip, with its 35W TDP, offers a much lower power envelope than the AMD chip's 120W TDP, which is a notable difference in efficiency.

Specification Differences

The two processors differ in nearly every core specification. The AMD Ryzen 7 9850X3D has 8 cores and 16 threads, while the Intel Core Ultra 7 265T has 20 cores and 20 threads. Base clocks are 4.70 GHz for AMD and 1.50 GHz for Intel. Boost clocks are 5.60 GHz for AMD and 5.30 GHz for Intel. TDP is 120W for AMD and 35W for Intel. The AMD chip uses AMD Socket AM5, while the Intel chip uses Intel Socket 1851. Process nodes are 4 nm for AMD and 3 nm for Intel. Transistor counts are 8,315 million for AMD and 17,800 million for Intel. Die sizes are 70.6 mm² for AMD and 243 mm² for Intel.

Cache configurations differ. AMD has 80 KB L1 per core and 1 MB L2 per core, while Intel has 192 KB L1 per core and 3 MB L2 per core. L3 cache is 96 MB shared for AMD and 30 MB shared for Intel. Memory bandwidth is 89.6 GB/s for AMD and 102.4 GB/s for Intel. ECC memory support is present on AMD but absent on Intel. PCIe lanes are 24 for AMD and 20 for Intel, both Gen 5. Integrated graphics are Radeon Graphics for AMD and Arc Xe-LPG Graphics 64EU for Intel. The AMD chip has an unlocked multiplier, while the Intel chip does not. Release dates are 2026-01-28 for AMD and 2025-01-06 for Intel. Launch MSRP is $499 for AMD and $384 for Intel. Part numbers are 100-000001973 for AMD and SRQCS for Intel.

Where Each One Wins

The AMD Ryzen 7 9850X3D wins in scenarios involving high-frequency integer operations, physics simulation, data compression, and extended instruction sets. Its Passmark physics score of 4171 versus 2391 shows a 74.4% advantage, indicating strong performance in simulation and game physics workloads. The data compression win of 28.2% and the extended instructions win of 37.3% point to strengths in file archiving and CPU-intensive algorithms. The AMD chip also wins in Passmark multithread, integer math, and single-thread tests, making it a balanced performer across most Passmark workloads. Its larger L3 cache of 96 MB likely contributes to these results.

The Intel Core Ultra 7 265T wins in floating point math, data encryption, and Cinebench benchmarks. The floating point score of 129817 versus 81998 represents a 36.8% lead, which suggests advantages in scientific computing and workloads that rely on FPU throughput. The data encryption win of 23% indicates faster cryptographic operations. The Cinebench R23 multicore win of 27.7% and the single-core win of 50% show that Intel's architecture handles both multi-threaded and single-threaded rendering tasks better in this specific suite. The Intel chip's 20 cores likely drive its Cinebench R23 multicore score of 31558, despite its lower clock speeds. The lower TDP of 35W makes it a more efficient option for sustained workloads in power-constrained environments.