AMD Ryzen 9 5950X vs Intel Core Ultra 5 245K Comparison
AMD Ryzen 9 5950X
Core Ultra 5 245K
PERFORMANCE BENCHMARKS
Analysis: AMD Ryzen 9 5950X vs Intel Core Ultra 5 245K
The Verdict
The data splits these two desktop processors into distinct roles. The Intel Core Ultra 5 245K is the clear choice for single-threaded responsiveness and specialized math workloads, while the AMD Ryzen 9 5950X dominates in raw multi-threaded throughput and data-heavy tasks. The benchmark record shows AMD wins 8 of the 15 head-to-head tests, but Intel’s 7 wins are concentrated in areas that directly impact everyday feel and certain professional applications.
For users who prioritize maximum parallel processing power, the Ryzen 9 5950X leads in Cinebench R23 multi-core with 26017 versus 25066, a 3.7% advantage. It also crushes the Intel part in PassMark integer math, scoring 185520 against 98524, a massive 46.9% gap. This is the processor for sustained all-core rendering, compression, and encryption workloads.
For users who want the fastest single-core response, the Core Ultra 5 245K is the clear winner. It leads by 35.9% in PassMark single-thread (4714 versus 3470) and by 20.8% in Cinebench R15 single-core (322 versus 266.5). Its 32.1% lead in Cinebench R23 single-core (2132 versus 1614) confirms this is a generational leap in per-thread performance.
The average benchmark scores place both at the 91st percentile among all CPUs. The Intel chip’s average score is 54053 versus 51947 for AMD, a 4.1% overall edge. However, the Intel part’s launch MSRP was $319, while the AMD part launched at $799. The verdict is simple: Intel for responsiveness, AMD for brute force, and the Intel part is the more balanced overall package based on recorded averages.
Architecture Differences
The Core Ultra 5 245K is built on Intel’s Arrow Lake-S architecture using a TSMC 3 nm process node. It integrates 17,800 million transistors on a 243 mm² die. The Ryzen 9 5950X uses the Zen 3 architecture (Vermeer codename) on a 7 nm node, with 8,300 million transistors spread across two 74 mm² dies. The process advantage is substantial: 3 nm versus 7 nm.
The core configurations diverge sharply. Intel’s 245K has 14 cores and 14 threads, meaning no hyperthreading. AMD’s 5950X has 16 cores and 32 threads, offering more than double the threading capacity. The cache hierarchy also differs. Intel provides 192 KB L1 per core, 3 MB L2 per core, and 24 MB shared L3. AMD provides 64 KB L1 per core, 512 KB L2 per core, and 64 MB L3. The AMD’s larger L3 is triple Intel’s, a factor in its multi-core wins.
The memory systems are from different eras. Intel supports DDR5 with dual-channel bandwidth of 102.4 GB/s. AMD supports DDR4 with dual-channel bandwidth of 51.2 GB/s, exactly half the throughput. Both support ECC memory. PCIe generations also differ: Intel offers Gen 5 with 20 CPU lanes, AMD offers Gen 4 with 20 CPU lanes. Intel includes integrated Arc Xe-LPG Graphics with 64 execution units; AMD has none. The Intel part is unlocked and active, as is the AMD, but their sockets are entirely incompatible: LGA 1851 versus AM4.
Where Each One Wins
The Intel Core Ultra 5 245K wins in every single-threaded benchmark recorded. This includes Cinebench R15, R20, and R23 single-core tests, plus PassMark single-thread and single-thread (duplicate) results. It also wins specialized math tests: PassMark find prime numbers (414 versus 228, a 81.6% lead) and PassMark floating point math (130678 versus 100280, a 30.3% lead). The PassMark physics test also belongs to Intel, with 3081 versus 1878, a 64.1% advantage.
The AMD Ryzen 9 5950X wins all the multi-threaded and throughput-heavy tests. This includes Cinebench R15 multi-core (4324 versus 3850, an 11% lead) and Cinebench R23 multi-core (26017 versus 25066, a 3.7% lead). Its largest wins come in PassMark data compression (624347 versus 458817, a 26.5% lead), data encryption (39593 versus 33286, a 15.9% lead), and integer math (185520 versus 98524, a 46.9% lead). It also leads in extended instructions (40468 versus 37617, a 7% lead), random string sorting (65172 versus 55098, a 15.5% lead), and the overall PassMark multithread score (45424 versus 43047, a 5.2% lead).
The use-case split is clear. Intel for physics simulations, prime number calculations, and floating point operations. AMD for data compression, encryption, integer math, and heavy multi-core rendering. The 3DMark results for AMD (max threads 11597, single thread 944) suggest its thread advantage dominates in those tests, though the Intel lacks corresponding 3DMark entries in the data.
FAQ
Q: Which processor has the higher single-core performance?
A: The Intel Core Ultra 5 245K wins every single-thread benchmark. It leads by 32.1% in Cinebench R23 single-core (2132 versus 1614) and by 35.9% in PassMark single-thread (4714 versus 3470).
Q: Which processor is better for multi-core rendering?
A: The AMD Ryzen 9 5950X leads in Cinebench R23 multi-core by 3.7% (26017 versus 25066) and in R15 multi-core by 11% (4324 versus 3850). Its 16 cores and 32 threads provide the advantage.
Q: How do they compare in memory bandwidth?
A: The Intel part has a 102.4 GB/s memory bandwidth on DDR5. The AMD part has 51.2 GB/s on DDR4. The Intel’s bandwidth is double the AMD’s in the recorded specifications.
Q: Which processor has the larger L3 cache?
A: The AMD Ryzen 9 5950X has a 64 MB L3 cache. The Intel Core Ultra 5 245K has a 24 MB shared L3 cache. The AMD has more than double the L3.
Q: What is the transistor count difference?
A: The Intel Core Ultra 5 245K is built with 17,800 million transistors on a 3 nm node. The AMD Ryzen 9 5950X has 8,300 million transistors on a 7 nm node. Intel has over twice the transistor count.
Q: Which processor includes integrated graphics?
A: The Intel Core Ultra 5 245K includes an Arc Xe-LPG Graphics with 64 EU. The AMD Ryzen 9 5950X has no integrated graphics, requiring a separate GPU.
Head-to-Head Benchmarks
The largest win for the Intel Core Ultra 5 245K is in PassMark find prime numbers, where it scores 414 versus 228, a 81.6% advantage. This is followed by PassMark physics, 3081 versus 1878, a 64.1% lead. In floating point math, Intel leads 130678 versus 100280, a 30.3% win. Single-thread results are consistently in Intel’s favor: 35.9% in PassMark single-thread (4714 versus 3470) and 32.1% in Cinebench R23 single-core (2132 versus 1614). In Cinebench R15 single-core, Intel wins 20.8% (322 versus 266.5).
The AMD Ryzen 9 5950X delivers its biggest win in PassMark integer math, scoring 185520 versus 98524, a 46.9% lead. Its PassMark data compression win is 26.5% (624347 versus 458817), and data encryption is 15.9% (39593 versus 33286). Random string sorting favors AMD by 15.5% (65172 versus 55098). Extended instructions go to AMD by 7% (40468 versus 37617). The multithread score goes to AMD by 5.2% (45424 versus 43047). In Cinebench R23 multi-core, AMD wins by 3.7% (26017 versus 25066), and in R15 multi-core by 11% (4324 versus 3850). AMD’s wins are broader, covering 8 of the 15 tests, but Intel’s wins are often larger in percentage terms.
Specification Differences
The two processors differ in every major specification category recorded. The Intel Core Ultra 5 245K has 14 cores and 14 threads, while the AMD Ryzen 9 5950X has 16 cores and 32 threads. Base clocks differ: 4.20 GHz for Intel versus 3.40 GHz for AMD. Boost clocks: 5.20 GHz for Intel versus 4.90 GHz for AMD. The Intel TDP is 125 W, the AMD TDP is 105 W.
The process node is 3 nm for Intel, 7 nm for AMD, both from TSMC. Transistor counts are 17,800 million versus 8,300 million. Die size is 243 mm² for Intel, versus 2x 74 mm² for AMD. The cache structures differ: L1 is 192 KB per core on Intel versus 64 KB per core on AMD; L2 is 3 MB per core on Intel versus 512 KB per core on AMD; L3 is 24 MB shared on Intel versus 64 MB on AMD.
Memory support is DDR5 on Intel versus DDR4 on AMD, with the same dual-channel bus but different bandwidths: 102.4 GB/s versus 51.2 GB/s. Both support ECC memory. PCIe version is Gen 5 on Intel versus Gen 4 on AMD, both with 20 lanes. Intel has integrated graphics, AMD has none. The socket is Intel Socket 1851 versus AMD Socket AM4. The release dates differ: Intel released 2024-10, AMD released 2020-11. Both have unlocked multipliers. The Intel launch MSRP was once $319, the AMD launch MSRP was $799.