CPU comparison
Core Ultra 5 245K vs Core Ultra 7 265K
Compared on manufacturer specifications — cores, cache, clocks and socket — with the verdict reasoned from those specs, not from benchmarks we have not run.
Specifications verified August 29, 2026
Intel
Core Ultra 5 245K
14C / 14T · 5.2 GHz · 24MB L3
Intel
Core Ultra 7 265K
20C / 20T · 5.5 GHz · 30MB L3
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| Specification | Core Ultra 5 245K | Core Ultra 7 265K |
|---|---|---|
| Vendor | ||
| Vendor | Intel | Intel |
| Cores | ||
| Cores | 14 (6P + 8E) | 20 (8P + 12E) |
| Threads | ||
| Threads | 14 | Winner: 20 |
| Boost clock | ||
| Boost clock | 5.2 GHz | Winner: 5.5 GHz |
| L3 cache | ||
| L3 cache | 24MB | Winner: 30MB |
| TDP / Processor Base Power | ||
| TDP / Processor Base Power | 125W (Processor Base Power) | 125W (Processor Base Power) |
| Socket | ||
| Socket | LGA1851 | LGA1851 |
| Integrated GPU | ||
| Integrated GPU | Yes | Yes |
| Memory support | ||
| Memory support | DDR5 | DDR5 |
| Released | ||
| Released | October 24, 2024 | October 24, 2024 |
| US list (MSRP / RCP) | ||
| US list (MSRP / RCP) | ~$309~£229 | ~$394~£292 |
| UK street price | ||
| UK street price | Search Amazon (opens in new tab) | Search Amazon (opens in new tab) |
AMD publishes TDP and Intel publishes Processor Base Power — related figures, but not the same unit, so no power winner is declared.
The spec-only verdict
Gaming: Core Ultra 7 265K holds the on-paper edge at 5.5 GHz against 5.2 GHz, with cache in the same class — a specification nudge, not a measured frame-rate lead.
Parallel work: Core Ultra 7 265K brings 20 threads against 14 — streaming alongside a game, compiles and heavy multitasking are what threads are for.
Upgrade path: Both sit on LGA1851. LGA1851 hosts Core Ultra 200S and 200S Plus, and looks like the end of the line after the Plus refresh: Intel's next desktop generation (Core Ultra 400 "Nova Lake-S", expected in 2027) moves to LGA1954, as reported from Intel's own internal tools rather than a formal announcement. Intel has published no longer commitment comparable to AMD's AM5-through-2029 statement.
Resilience: both include integrated graphics, so either can drive a display and be troubleshot without a discrete card installed.
Fit for use
Where each chip is positioned
Derived from cache, clocks and thread count — positioning from the spec sheet, not measured performance.
| Use case | Core Ultra 5 245K | Core Ultra 7 265K |
|---|---|---|
| Esports / 1080pLow-resolution, high-frame-rate play is CPU-bound, so cache and boost clock dominate — the reason stacked-cache X3D parts exist. | ||
| Esports / 1080pLow-resolution, high-frame-rate play is CPU-bound, so cache and boost clock dominate — the reason stacked-cache X3D parts exist. | Capable | Capable |
| 1440p / 4K gamingBoth gaming columns use the same cache-first rule (X3D or ≥96MB L3). The GPU still carries more of the load at 1440p/4K — this is not a separate boost-clock ranking. | ||
| 1440p / 4K gamingBoth gaming columns use the same cache-first rule (X3D or ≥96MB L3). The GPU still carries more of the load at 1440p/4K — this is not a separate boost-clock ranking. | Capable | Capable |
| Streaming + contentGaming while encoding, or cutting a timeline with apps open behind it, scales with how many threads you can spread across. | ||
| Streaming + contentGaming while encoding, or cutting a timeline with apps open behind it, scales with how many threads you can spread across. | Stretched | Strong |
| Dev / compileBuilds, test suites and containers parallelise across threads; this is where the top of the range pays back. | ||
| Dev / compileBuilds, test suites and containers parallelise across threads; this is where the top of the range pays back. | Stretched | Capable |
| Local AI companionA local model running alongside everything else needs threads to spare, and DDR5 bandwidth for whatever the GPU does not hold. | ||
| Local AI companionA local model running alongside everything else needs threads to spare, and DDR5 bandwidth for whatever the GPU does not hold. | Stretched | Capable |
Common questions
Core Ultra 5 245K vs Core Ultra 7 265K
Answered from the verified figures on this page rather than general guidance.
Which is better for gaming, Core Ultra 5 245K or Core Ultra 7 265K?
Which handles streaming, compiles and multitasking better, Core Ultra 5 245K or Core Ultra 7 265K?
Which platform has the better upgrade path, LGA1851 or LGA1851?
Do Core Ultra 5 245K and Core Ultra 7 265K need a dedicated graphics card?
If one chip holds a specification lead that matches your workload — cache for gaming, threads for parallel work — that lead outweighs a step of clock speed. When the specs tie, the socket decides: the cheapest upgrade is the one that reuses the motherboard.