Core i5-6600K
Intel
PassMark
6,301
MSRP
$242
AVG Price
$105
Performance Spectrum - CPU
About PassMark
PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.
Overview
The Core i5-6600K is manufactured by Intel. It was released in 5 August 2015 (10 years ago). It is based on the Skylake (2015−2016) architecture. It features 4 cores and 4 threads. Base frequency is 3.5 GHz, with boost up to 3.9 GHz. L3 cache: 6 MB (total). L2 cache: 256 kB (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 91 Watt. Memory support: DDR3, DDR4. Passmark benchmark score: 6,301 points. Launch price was $242.
Value Upgrade Path
This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. Components placed above yours deliver better value for money.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core i5-6600K
FPS Benchmarks
Predicted performance for Core i5-6600K across popular games. Tested paired with RTX 4090 to isolate CPU performance.
Counter-Strike 2
League of Legends
Path of Exile 2
Valorant
Technical Analysis
Detailed breakdown of Core i5-6600K specifications and capabilities.
Processing Power
The Core i5-6600K is a 4-core / 4-thread processor based on the Skylake (2015−2016) architecture, manufactured on a 14 nm process node. It reaches a maximum boost clock of 3.9 GHz from a base frequency of 3.5 GHz— higher boost clocks directly translate to better single-threaded performance and responsiveness in gaming. It carries 6 MB (total) of L3 cache, plus 256 kB (per core) of L2 cache and 64 kB (per core) of L1 cache per core. In the PassMark benchmark (a comprehensive multi-threaded test), it scores 6,301, placing it in the Entry Level performance tier as a Legacy generation product.
| Specification | Core i5-6600K |
|---|---|
| Cores / ThreadsPhysical/logical processing units | 4C / 4T |
| Max Boost ClockPeak single-core speed under boost | 3.9 GHz |
| Base ClockGuaranteed minimum operating frequency | 3.5 GHz |
| ArchitectureCPU microarchitecture design | Skylake (2015−2016) |
| Process NodeFabrication technology — smaller = more efficient | 14 nm |
| L3 CacheShared cache — reduces memory latency for all cores | 6 MB (total) |
| L2 CachePer-core fast cache for frequently accessed data | 256 kB (per core) |
| L1 CacheUltra-fast per-core cache | 64 kB (per core) |
| Die SizePhysical silicon area of the processor | 122 mm2 |
| Bus SpeedData bus frequency | 4 × 8 GT/s |
| 64-bit Support | Yes |
| Windows 11 Compatible | No |
| Unlocked MultiplierWhether the CPU can be overclocked | Yes (Overclockable) |
| PassMark ScoreOverall multi-threaded benchmark score | 6,301 |
Memory & Platform
The Core i5-6600K fits into the LGA1151 socket and supports PCIe 3.0. It supports DDR3, DDR4 memory.
| Specification | Core i5-6600K |
|---|---|
| TypeDesktop or Laptop processor | desktop |
| SeriesProduct family | Intel Core i5 (Desktop) |
| SocketMotherboard socket required | LGA1151 |
| PCIe GenerationPeripheral interconnect speed — affects GPU and SSD bandwidth | PCIe 3.0 |
| RAM TypeSupported memory standard | DDR3, DDR4 |
| Max CPUs in ConfigMulti-socket support for servers | 1 (Uniprocessor) |
Power & Cooling
The Core i5-6600K has a rated TDP (Thermal Design Power) of 91 Watt — this indicates the amount of heat generated under sustained load and determines what cooling solution is needed.
| Specification | Core i5-6600K |
|---|---|
| TDPThermal Design Power — heat output under sustained workload | 91 Watt |
Value Analysis
At an average price of $105 (MSRP: $242), the Core i5-6600K delivers 60 PassMark points per dollar. Performance ranking position: #1681 out of all indexed processors.
| Specification | Core i5-6600K |
|---|---|
| MSRPManufacturer's Suggested Retail Price | $242 |
| Avg Price (30d)Average market price over the last 30 days | $105 |
| Launch PriceOriginal retail price at launch | $242 |
| Performance RankPosition in overall performance ranking | #1681 |
| Release DateLaunch date | 5 August 2015 (10 years ago) |
| Release Year | 2015 |
| DesignerArchitecture designer (e.g. Intel, AMD) | Intel |
| ManufacturerFabrication foundry (e.g. TSMC) | Intel |
Similar Performance
Processors with benchmark scores closest to the current hardware, grouped by manufacturer.
Intel (12)
AMD (12)
Our Recommendation for Core i5-6600K
Suggested pairings based on performance balance
Minimum (Avoid Bottleneck) (12)
Recommended (Balanced) (12)
High-End (Max Performance) (12)
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