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Square green ceramic chip with gold contact pads and silver heat spreader marked i7-3770K

Intel

Intel Core i7-3770K desktop processor LGA 1155 3.5GHz 3.9GHz turbo 77W

SKU CH-VAJ2-KGQ5V

Quad-core desktop processor with eight threads, 3.5 GHz base clock, 3.9 GHz turbo, 8 MB L3 cache, 77 W TDP and Intel HD Graphics 4000 for LGA 1155 boards

  • Product nameCore i7-3770K
  • CPU coresQuad-Core
  • CPU socketLGA 1155
  • Maximum turbo clock3.9 GHz
  • TDP rating77 W
  • Processor classDesktop
  • Quad-core with Hyper-Threading handles eight threads for multi-tasking
  • 5 GHz base and 3.9 GHz turbo lift single-thread speed
  • 22 nm Ivy Bridge design keeps thermal power at 77 W
  • Intel HD Graphics 4000 at 650 MHz covers display output without a discrete card
  • 8 MB L3 cache plus 4 x 256 KB L2 reduces memory latency

Ivy Bridge quad-core for LGA 1155 builds

This Intel Core i7-3770K is a 22nm desktop processor with four cores and eight threads. It runs at 3.5GHz base clock and reaches 3.9GHz max turbo frequency. The 77W thermal design power suits mainstream cooling solutions. Integrated Intel HD Graphics 4000 provides display output without a discrete card.

Dual-channel DDR3 and 64-bit instruction set

The memory controller supports two channels of DDR3 RAM. The 64-bit instruction set handles modern operating systems and applications. L3 cache totals 8MB while each core holds 256KB of L2 cache. Virtualization technology is included for hardware-assisted virtual machines.

CPU only package with integrated graphics

Supplied without a retail box, the processor fits socket LGA 1155 motherboards. The on-die graphics run at 650MHz base and up to 1.15GHz max dynamic frequency. This allows a functional system for troubleshooting or light use before adding a dedicated GPU. The 77W rating keeps cooler requirements modest.

How it compares

Measured against everything we stock in Desktop Processors, at today’s prices. Recalculated every night.

Price $58.99
Cheaper than about 83% of the 494 comparable items (median $149.99).
Maximum turbo clock 3.9 GHz
Lower than about 90% of the 246 comparable items (median 4.7 GHz).
TDP rating 77 W
Lower than about 56% of the 320 comparable items (median 95 W).

New to this? Buying a processor with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameIntel
Product lineCore i7
Product nameCore i7-3770K
Performance
Working frequency3.5 GHz
Processor
CPU coresQuad-Core
CPU socketLGA 1155
Maximum turbo clock3.9 GHz
TDP rating77 W
Processor classDesktop
Processor codenameIvy Bridge
CPU threads8-Threads
L1 cache size4 × 256 KB
Level 3 cache8 MB
Process node22 nm
CPU instruction set64-Bit
Hyper-ThreadingYes
Virtualization supportYes
Memory
Supported memoryDDR3
Channel configuration2
Graphics
Built-in graphicsIntel HD Graphics 4000
GPU base clock650 MHz
Graphics max dynamic frequency1.15 GHz

Questions about this item

Should I pick the Core i7-3770K or a lower-tier Ivy Bridge model for a new LGA 1155 build?

The Core i7-3770K gives you four cores with Hyper-Threading for eight threads, a 3.5 GHz base clock, 3.9 GHz max turbo, 8 MB L3 cache and an unlocked multiplier — headroom a non-K i5 or i3 cannot match.

What does the 3.9 GHz turbo actually deliver in daily workloads?

When thermal and power headroom allow, the processor lifts a single active core to 3.9 GHz; sustained all-core loads typically sit near the 3.5 GHz base, so bursty tasks see the higher speed while heavy renders run at base.

Which memory standard does the LGA 1155 controller support and what bandwidth ceiling does it impose?

The integrated controller runs dual-channel DDR3 only; peak throughput is set by the DDR3 speed grade you install, and no other memory type fits the socket.

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