CPU Comparison
Intel Core i5-2550K vs Core i7-2600K
A side-by-side comparison of specs, performance and value. The Intel Core i5-2550K is a specialized unlocked quad-core Sandy Bridge desktop processor released in early 2012, featuring a disabled integrated GPU, a 3.4 GHz base clock, and a 3.8 GHz turbo boost for pure discrete-GPU overclocking builds.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Marginally faster than the 2500K in multi-threaded tasks due to 100 MHz higher clocks, but still inadequate for modern software.
Still usable for basic tasks and light productivity.
Gaming
The slight clock bump over the 2500K is imperceptible in games. Still completely obsolete for modern titles.
When overclocked, can still handle older games well, but bottlenecks modern GPUs.
Virtualization
Lacks VT-d, and the lack of an iGPU means no iGPU passthrough, reducing its utility in virtualization setups.
Handles light VMs without issue.
Efficiency
Despite the disabled iGPU, power consumption when overclocked is still very high by modern standards.
95W TDP is high, and overclocking makes it worse.
Specialized Performance
AI / ML
- No AI hardware
- Lacks AVX2 and modern instruction extensions
- Unable to handle any practical AI workload
- No AI hardware
- Instruction sets outdated
Content Creation
Gaming
- Virtually identical gaming performance to an overclocked i5-2500K
- Cannot function without a discrete graphics card
- Modern games are heavily CPU-limited on this architecture
- Overclocking helps single-core performance
- Needs discrete GPU for modern games
- PCIe 2.0 limits bandwidth
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- Slightly higher clocks out of the box than the 2500K
- Unlocked multiplier for easy overclocking
- Disabled iGPU meant 100% of the die was dedicated to CPU tasks
- Has become a unique collector's piece
- No iGPU driver conflicts for pure discrete GPU systems
Cons
- No integrated graphics whatsoever
- Lost Intel Quick Sync video encoding
- More expensive at launch than the 2500K for negligible gains
- Lacks VT-d
- No Hyper-Threading
Pros
- Unlocked multiplier for easy overclocking
- HD 3000 integrated graphics
- Revolutionary IPC for 2011
- Excellent value at launch
Cons
- 32nm process is inefficient
- Lacks AVX2
- PCIe 2.0 only
- 4 cores limit modern multi-threaded performance
Competitors & Alternatives
Intel Core i5-2550K
- AMD Bulldozer FX-4170Rival
Desktop Enthusiast
- Compare head-to-headIntel Core i5-2500KRival
Desktop Enthusiast
- Intel Core i7-2600KRival
Desktop Premium
- AMD FX-6200Rival
Desktop Multi-thread
- Compare head-to-headIntel Core i5-3570KRival
Next-Gen Enthusiast
Core i7-2600K
- AMD FX-8150Rival
Desktop
Newer Ivy Bridge alternative with PCIe 3.0.
Compare head-to-headCheaper, similar gaming performance when overclocked.
Compare head-to-head- Intel Core i7-2600Alt
Locked version if overclocking isn't needed.
Our Verdict on Each
An intriguing engineering footnote that disabled the iGPU for theoretical overclocking gains, but its minor clock bump and higher price over the 2500K made it one of the least relevant 'K' series processors Intel ever launched.
Best for: Purchasing as a collector's item to complete a Sandy Bridge CPU collection.
Read the full reviewA historic CPU that brought affordable, high-performance overclocking to the masses. Its legacy is unmatched, though it is outdated today.
Best for: Retro gaming or legacy builds.
Read the full reviewFrequently Asked Questions
Which is better, Intel Core i5-2550K or Core i7-2600K?
Based on our editorial ratings, the Core i7-2600K comes out ahead with a score of 8/10. That said, the best choice depends on your workload — check the spec and performance breakdown above for gaming, productivity and efficiency differences.
Which is faster for gaming, Intel Core i5-2550K or Core i7-2600K?
For gaming, the Core i7-2600K leads with a gaming performance score of 55/100 among Intel Core i5-2550K and Core i7-2600K.
Do Intel Core i5-2550K and Core i7-2600K use the same socket?
No. They use different sockets (Intel Core i5-2550K: LGA 1155, Core i7-2600K: Intel Socket 1155), so each needs a compatible motherboard.
Which is faster in multi-core benchmarks?
The Core i7-2600K posts the highest multi-core benchmark score. Multi-core results: Intel Core i5-2550K (4,500), Core i7-2600K (9,800). Benchmark figures are approximate and workload-dependent.