Intel
Core Ultra 5 245K14-core Arrow Lake processor (6P + 8E) with 5.2 GHz boost. Great value for mid-range gaming builds on Intel's latest platform.
Intel
Core Ultra 7 265K20-core Arrow Lake processor (8P + 12E) with 5.5 GHz boost. Excellent balance of gaming and productivity performance on the LGA 1851 platform.
How They Compare
The Intel Core Ultra 5 245K is priced at $288.99 in the CPUs category. It stands out with base clock advantages over the competition. It's designed with gaming in mind.
The Intel Core Ultra 7 265K is priced at $394.99 in the CPUs category. It stands out with cache, cores, threads advantages over the competition. It's designed with gaming in mind.
Key Differences
What this means: TDP indicates cooling requirements and power draw. A 65W CPU works with basic air coolers, while 125W+ may need a high-end tower cooler or AIO liquid. Higher TDP chips often perform better but generate more heat and need better airflow.
What this means: CPU cache (L2 and L3) acts as ultra-fast memory close to the cores. Larger caches reduce trips to system RAM, cutting latency. Games benefit heavily from large L3 caches - AMD's X3D chips with stacked V-Cache demonstrate up to 20% gaming FPS gains from cache alone.
What this means: More cores handle multi-threaded workloads like video editing, 3D rendering, streaming while gaming, and running VMs. Most games plateau at 6-8 cores - extra cores rarely help gaming FPS but matter enormously for productivity. 4 cores is entry-level, 6-8 is the gaming sweet spot, 12+ is for heavy multitasking.
What this means: Simultaneous multithreading (SMT/Hyper-Threading) doubles the tasks each core can juggle. A 6-core/12-thread CPU handles background apps, Discord, and streaming alongside gaming much better than a 6-core/6-thread chip. Less impact in pure gaming where few threads are used.
What this means: The guaranteed minimum clock speed under sustained full load. Higher base clocks provide more consistent performance during long rendering jobs or extended gaming sessions when boost clocks can't be maintained due to thermal limits.
What this means: The maximum single-core speed under ideal thermal and power conditions. This is the number that matters most for gaming FPS, as most games rely on 1-4 fast cores. Higher boost = snappier responsiveness and higher peak frame rates.
Spec Breakdown
Geekbench 6 Benchmark Scores
Full Specification Comparison
9 specs| Specification | Core Ultra 5 245K | Core Ultra 7 265K |
|---|---|---|
| TDP | 125W (PL2 159W) | 125W (PL2 250W) |
| Cache | 26MB | 33MB |
| Cores | 14 | 20 |
| Socket | LGA 1851 | LGA 1851 |
| Threads | 14 | 20 |
| Base Clock | 4.2 GHz | 3.9 GHz |
| Boost Clock | 5.2 GHz | 5.5 GHz |
| Architecture | Arrow Lake | Arrow Lake |
| Included Cooler | No | No |
The Bottom Line
At $288.99, the Core Ultra 5 245K is the most affordable option. It takes the lead in base clock. Tagged as Best Benchmark Value.
- Higher base clock (4.2 GHz) within comparable designs
- Lower cache (26MB)
- Fewer cores (14)
- Fewer threads (14)
- You are comparing similar designs where base clock matters
- Budget is your top priority
- You want the best benchmark score per dollar
- You need better cache
- You need more cores for multi-threaded workloads
At $394.99, the Core Ultra 7 265K is the premium option. It takes the lead in cache and cores. Tagged as Best Performance and Premium Pick.
- Better cache (33MB)
- More cores (20)
- More threads (20)
- Higher boost clock (5.5 GHz) within comparable designs
- Lower base clock (3.9 GHz); compare clocks only within similar designs
- You want the stronger cache
- You need 20+ cores for your workload
- You are comparing similar designs and need the higher clocked option