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Part Comparison
Check specs, price, and value across parts.
Bottleneck Calculator
Measure CPU and GPU balance before you buy.
Power Calculator
Estimate wattage and PSU headroom.
Will It Run?
Test your hardware against popular games.
Smart Wizard
Get a complete build plan based on budget and goals.
Build Comparison
Compare complete builds side by side.
Part Comparison
Check specs, price, and value across parts.
Bottleneck Calculator
Measure CPU and GPU balance before you buy.
Power Calculator
Estimate wattage and PSU headroom.
Will It Run?
Test your hardware against popular games.
Smart Wizard
Get a complete build plan based on budget and goals.
Build Comparison
Compare complete builds side by side.
Part Comparison
Check specs, price, and value across parts.
Bottleneck Calculator
Measure CPU and GPU balance before you buy.
Power Calculator
Estimate wattage and PSU headroom.
Will It Run?
Test your hardware against popular games.
Intel
Detailed architecture, platform, memory, and feature data for this CPU.
Instruction Sets
About This Product
The Intel Core i7-5820K is a 6-core, 12-thread Haswell-E desktop CPU. It offers strong multi-threaded performance for its price, suitable for productivity and content creation tasks. While capable of gaming, its single-core performance is surpassed by newer CPUs in the same price bracket, making it less ideal for high-refresh-rate gaming.
Verdict
βGood for budget multi-threaded workloads, but less competitive for modern gaming.β
Performance Benchmarks
Scores are grouped by benchmark family so it is easy to compare raw speed, threaded output, and real-world value without mixing scales.
Render Workloads
Next-Gen Scale
Large Sample Pool
Value & Efficiency
These derived metrics use Cinebench R23 multi-core performance to keep the value calculation consistent across the catalog.
Performance per Watt
40.7 pts/W
Performance per Dollar
49.7 pts/$
Gaming Performance
These results come from real submitted gameplay sessions, so the reference GPU matters as much as the CPU itself.
Reference GPU
The Invincible
Mixed player settings
45 FPS
Playable
Planet of Lana
Mixed player settings
44 FPS
Playable
Nobody Wants to Die
Mixed player settings
37 FPS
Playable
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These pairings are pre-ranked from the comparison engine so readers can jump straight into the most relevant alternatives.

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