Intel Core Ultra 7 265K vs Intel Core Ultra 9 285 Comparison

Head-to-Head Benchmarks

The recorded data shows a clear split between the Intel Core Ultra 7 265K and the Intel Core Ultra 9 285 across 17 benchmark comparisons. The Ultra 7 265K takes 13 wins, while the Ultra 9 285 wins 4. However, the margin of victory matters more than the raw count.

The Ultra 9 285 delivers its most decisive win in Cinebench R23 single-core, scoring 6909 against 2020 for the Ultra 7 265K. That is a 70.8% advantage, the largest delta in the entire comparison. The same test in multi-core shows the Ultra 9 285 at 48945 versus 35850, a 26.8% lead. These two results define the Ultra 9 285 as the stronger processor for heavily threaded rendering workloads and for single-threaded tasks that rely on peak clock behavior.

The Ultra 7 265K fights back in several PassMark suites. Its biggest win is in extended instructions, scoring 54333 versus 45357, a 19.8% edge. Data compression also favors the Ultra 7 265K, with 665554 against 602121, a 10.5% margin. Random string sorting goes to the Ultra 7 265K at 79752 versus 73651, an 8.3% lead. Prime number finding shows 491 versus 459, a 7% advantage. PassMark multithread favors the Ultra 7 265K by 3.5%, and physics by 3.7%. Smaller wins appear in data encryption (2.8%), Cinebench R15 multi-core (1.8%), R15 single-core (1.7%), R20 multi-core (1.8%), R20 single-core (1.8%), and PassMark single-thread (1%).

The Ultra 9 285 also wins PassMark integer math, 164869 versus 143242, a 13.1% margin, and floating point math, 194988 versus 189629, a 2.7% margin. Those two results show the Ultra 9 285 handling arithmetic-heavy workloads more efficiently despite losing several other PassMark tests.

A notable pattern emerges in Cinebench. The Ultra 7 265K wins R15 and R20 in both single and multi-core, but the Ultra 9 285 dominates R23. The R23 multi-core gap of 26.8% is the largest multi-threaded delta recorded, while the R23 single-core gap of 70.8% is the largest overall. The database shows no similar inversion between R20 and R23 for either chip, so this appears to be a workload-specific scaling effect rather than a general trend.

Where Each One Wins

The Ultra 7 265K is the better choice for compression, encryption, extended instruction sets, prime number calculations, physics simulation, random string sorting, and general multithreaded throughput. Its PassMark multithread score of 58594 exceeds the Ultra 9 285's 56602, and its physics score of 3731 beats 3598. Data compression at 665554 versus 602121 suggests faster archive handling and database-style workloads. The 19.8% lead in extended instructions points to advantages in cryptography, multimedia codecs, and other SIMD-heavy tasks. For users running mixed desktop workloads where single-thread speed matters but not at the extreme, the Ultra 7 265K also holds a 1% edge in PassMark single-thread.

The Ultra 9 285 wins where raw core count and higher boost clocks translate into rendering performance. Cinebench R23 multi-core at 48945 versus 35850 represents a 36.5% raw score advantage over the Ultra 7 265K. Cinebench R23 single-core at 6909 versus 2020 is not just a win, it is a category difference. Integer math at 164869 versus 143242 shows the Ultra 9 285 handles integer-heavy computation better, and floating point math at 194988 versus 189629 adds a second arithmetic win.

The Cinebench R23 results are the standout. The Ultra 9 285's single-core score is more than three times the Ultra 7 265K's, which suggests the R23 single-core test is highly sensitive to the Ultra 9 285's 5.60 GHz boost clock versus the Ultra 7 265K's 5.50 GHz. The multi-core gap of 26.8% aligns with the Ultra 9 285's 24 cores versus 20, though the R15 and R20 results show the Ultra 7 265K winning those same comparisons by roughly 1.8%. The database therefore presents a conflicting picture: older Cinebench versions favor the Ultra 7 265K, while R23 heavily favors the Ultra 9 285.

The Verdict

The data indicates two distinct use cases. The Intel Core Ultra 7 265K suits users who prioritize PassMark-style mixed workloads, compression, encryption, and extended instruction throughput. It wins 13 of 17 head-to-head tests, including all R15 and R20 comparisons, and it does so while consuming a 125 W TDP against the Ultra 9 285's 65 W. The Ultra 7 265K also has an unlocked multiplier, while the Ultra 9 285 is locked.

The Intel Core Ultra 9 285 suits users who need maximum Cinebench R23 performance. Its 48945 multi-core score and 6909 single-core score are decisive. The 70.8% single-core delta and 26.8% multi-core delta in R23 are far larger than any Ultra 7 265K win. Integer math and floating point math also favor the Ultra 9 285.

The Ultra 9 285 earns a 95th percentile ranking against all CPUs, versus 94th for the Ultra 7 265K. Its average benchmark score is 75488, against 70879 for the Ultra 7 265K. The launch MSRP of the Ultra 9 285 is $579, and the Ultra 7 265K is $394. The Ultra 7 265K launched on 2024-10-23, while the Ultra 9 285 launched on 2024-12-31.

For a desktop build where rendering in Cinebench R23 is the primary metric, the Ultra 9 285 is the correct pick. For a broader range of PassMark workloads and for users who want an unlocked multiplier, the Ultra 7 265K wins more individual tests. The choice depends on which benchmark suite matches the intended workload.

FAQ

Q: Which processor wins more head-to-head benchmark comparisons?

A: The Intel Core Ultra 7 265K wins 13 of 17 head-to-head tests. The Intel Core Ultra 9 285 wins 4.

Q: What is the largest single benchmark advantage in the comparison?

A: The Ultra 9 285 leads by 70.8% in Cinebench R23 single-core, scoring 6909 versus 2020.

Q: How do the two processors compare in Cinebench R23 multi-core?

A: The Ultra 9 285 scores 48945, which is 26.8% ahead of the Ultra 7 265K's 35850.

Q: Does the Ultra 7 265K win any Cinebench tests?

A: Yes. The Ultra 7 265K wins Cinebench R15 multi-core (5020 versus 4933), R15 single-core (708 versus 696), R20 multi-core (20918 versus 20556), and R20 single-core (2953 versus 2901), each by 1.8% or less.

Q: Which processor has a higher average benchmark score?

A: The Ultra 9 285 has an average benchmark score of 75488, while the Ultra 7 265K averages 70879.

Q: Do the processors share the same socket and memory support?

A: Yes. Both use Intel Socket 1851 and support dual-channel DDR5 memory with 102.4 GB/s bandwidth and ECC memory.

Architecture Differences

Both processors are built on the Arrow Lake architecture, specifically Arrow Lake-S, and use TSMC's 3 nm process node. Both have 17,800 million transistors and a die size of 243 mm². The L1 cache is 192 KB per core and the L2 cache is 3 MB per core for both. The L3 cache differs: the Ultra 7 265K has 30 MB shared, while the Ultra 9 285 has 36 MB shared.

The core counts differ. The Ultra 7 265K has 20 cores and 20 threads, while the Ultra 9 285 has 24 cores and 24 threads. Neither chip uses simultaneous multithreading, so thread count equals core count. The Ultra 7 265K has a base clock of 3.90 GHz and a boost clock of 5.50 GHz. The Ultra 9 285 has a base clock of 2.50 GHz and a boost clock of 5.60 GHz. The Ultra 9 285 boosts 0.10 GHz higher but runs a much lower base clock.

The integrated graphics are identical: Arc Xe-LPG Graphics with 64 execution units on both. PCIe support matches as well, with Gen 5 and 20 lanes from the CPU. Both processors support ECC memory, which the database records as true for each. The production status is Active for both, and both are desktop market segment parts.

The release dates differ by about two months. The Ultra 7 265K launched on 2024-10-23, and the Ultra 9 285 launched on 2024-12-31. The part numbers are SRQCW for the Ultra 7 265K and SRQD4 for the Ultra 9 285.

Specification Differences

The core and thread counts differ: 20 cores and 20 threads for the Ultra 7 265K, 24 cores and 24 threads for the Ultra 9 285.

Base clock differs significantly: 3.90 GHz for the Ultra 7 265K, 2.50 GHz for the Ultra 9 285. Boost clock differs slightly: 5.50 GHz for the Ultra 7 265K, 5.60 GHz for the Ultra 9 285.

TDP differs: 125 W for the Ultra 7 265K, 65 W for the Ultra 9 285.

L3 cache differs: 30 MB shared for the Ultra 7 265K, 36 MB shared for the Ultra 9 285.

The Ultra 7 265K has an unlocked multiplier. The Ultra 9 285 does not.

Launch MSRP differs: $394 for the Ultra 7 265K, $579 for the Ultra 9 285.

Release date differs: 2024-10-23 for the Ultra 7 265K, 2024-12-31 for the Ultra 9 285.

Part number differs: SRQCW for the Ultra 7 265K, SRQD4 for the Ultra 9 285.

The percentile ranking differs: 94th for the Ultra 7 265K, 95th for the Ultra 9 285. Average benchmark score differs: 70879 for the Ultra 7 265K, 75488 for the Ultra 9 285.

Shared specifications include the Arrow Lake architecture, TSMC 3 nm process node, 17,800 million transistors, 243 mm² die size, 192 KB L1 cache per core, 3 MB L2 cache per core, Intel Socket 1851, dual-channel DDR5 memory support, 102.4 GB/s memory bandwidth, ECC memory support, Gen 5 PCIe with 20 lanes, Arc Xe-LPG Graphics 64EU, and Active production status.