Quick Verdict
A legendary HEDT CPU that brought 6 cores to the masses. Still capable for budget workstations today.
Overview
Launch
2011
Status
End-of-lifeGeneration
2nd Gen (Sandy Bridge-E)
Market
Desktop
The Intel Core i7-3930K is a flagship high-end desktop (HEDT) processor from the Sandy Bridge-E generation. Released in late 2011, it features 6 cores and 12 threads, operating at a base clock of 3.2 GHz and boosting up to 3.8 GHz. Built on a 32nm process, it boasts a massive 12MB L3 cache and a 130W TDP. As an unlocked 'K' series processor, it is highly prized by overclockers. It uses the LGA 2011 socket and supports quad-channel DDR3 memory along with 40 PCIe 3.0 lanes, making it ideal for multi-GPU setups and high-bandwidth applications. The chip lacks integrated graphics, requiring a discrete GPU. Though superseded by newer architectures, the i7-3930K remains a legendary CPU, offering robust multi-threaded performance that can still handle modern workloads reasonably well on the X79 platform.
The Core i7-3930K is a legendary HEDT processor offering 6 cores, 12MB of cache, and quad-channel memory. It remains a popular choice for budget workstation builds on the X79 platform.
Specifications
Performance
6 cores and 12 threads hold up well for content creation.
Excellent for VMs with 12 threads and quad-channel memory.
Still decent for modern gaming, though single-core is slower than new CPUs.
130W TDP and 32nm process mean it runs hot and uses power.
- •6 cores help with modern titles
- •Overclocks well to improve single-core
- •PCIe 3.0 supports modern GPUs
- •No AI hardware
- •PCIe 3.0 is okay for basic inference cards
Architecture
32nm
Process Node
Sandy Bridge-E
Codename
6C / 12T
Core Config
12 MB
L3 Cache
130 W
TDP
Architecture Overview
The Sandy Bridge-E architecture of the i7-3930K represents the pinnacle of Intel's 32nm HEDT design. The massive 435mm² die contains 2.27 billion transistors, housing 6 active cores and 12MB of shared L3 cache. The architecture drops the integrated graphics found in consumer Sandy Bridge chips to maximize CPU die area and I/O capabilities. It utilizes a quad-ring bus topology to connect the cores to the cache and memory controller. The quad-channel DDR3 memory controller provides immense bandwidth, while the 40 PCIe 3.0 lanes offer unparalleled expansion potential for the era. The unlocked multiplier allows enthusiasts to easily push the clock speeds beyond 4.5 GHz with adequate cooling. This architecture was purpose-built for extreme enthusiasts, content creators, and professionals who needed massive memory bandwidth and compute density.
CPU Design
6 cores with Hyper-Threading.
Memory Subsystem
Quad-channel DDR3 support.
PCIe & I/O
40 PCIe 3.0 lanes.
Overclocking
Unlocked multiplier.
- Better IPC
- Quad-channel memory
- 40 PCIe 3.0 lanes
- Better overclocking
Key Highlights
- 6 cores and 12 threads
- 40 PCIe 3.0 lanes
- Massive 12MB L3 cache
- Excellent overclocker
- High 130W TDP
- 32nm process is inefficient
- No integrated graphics
- Obsolete X79 platform
History
Launched on November 14th, 2011, the Core i7-3930K quickly became the darling of the enthusiast community. It offered 6 cores and 12 threads at a time when mainstream desktops were still using 4 cores. Priced at $583, it provided excellent value compared to the Extreme Edition i7-3960X, offering the same core count with only slightly less cache.
It dominated the HEDT market for years, powering countless high-end gaming rigs, rendering stations, and virtualization labs. The i7-3930K solidified the LGA 2011 platform as the go-to choice for power users. Even after the release of Ivy Bridge-E, many users held onto their 3930Ks due to their exceptional overclocking headroom and robust performance.
Today, it is remembered as one of Intel's most iconic HEDT processors, marking the beginning of the 6-core era for enthusiasts.
Improvements over Previous Generation
- Better IPC
- Quad-channel memory
- 40 PCIe 3.0 lanes
- Better overclocking
Alternatives & Competitors
Should You Buy It?
Not Recommended for the right buyer
Budget 6-core workstation build
Avoid if…
- New builds from scratch
- Power efficiency priority
- Need DDR4/DDR5
Use Cases
Interesting Facts
Brought 6-core performance to a wider audience compared to the 990X.
Features a massive 435mm² die.
Highly overclockable, often reaching 4.5 GHz+ on air cooling.
Includes 40 PCIe 3.0 lanes.
Has a large 12MB L3 cache.
Built on the 32nm Sandy Bridge-E architecture.
Lacks integrated graphics entirely.
Supports quad-channel DDR3 memory.
Uses the LGA 2011 socket.
Still used in budget home servers and render farms today.
People Also Ask
Is the Core i7-3930K still good for gaming?
Yes, it can still handle modern games reasonably well, especially when overclocked.
Is the i7-3930K unlocked?
Yes, it features an unlocked multiplier for overclocking.
What socket does the i7-3930K use?
It uses the LGA 2011 socket.
Does the i7-3930K have integrated graphics?
No, it requires a discrete GPU.
How many PCIe lanes does the i7-3930K have?
It has 40 PCIe 3.0 lanes.
What is the TDP of the i7-3930K?
The TDP is 130 Watts.
Does the i7-3930K support DDR4?
No, it supports quad-channel DDR3 memory.
What is the max turbo of the i7-3930K?
It can turbo boost up to 3.8 GHz.
How much cache does the i7-3930K have?
It has 12MB of L3 cache.
Does the i7-3930K support Windows 11?
No, it is not officially supported.
Frequently Asked Questions
What generation is the i7-3930K?
It is a 2nd generation Intel Core processor (Sandy Bridge-E).
Can the i7-3930K be overclocked?
Yes, it has an unlocked multiplier and is highly prized by overclockers.
What is the base clock of the i7-3930K?
The base clock is 3.2 GHz.
Does it support AES-NI?
Yes, it includes hardware encryption support.
What process node is used?
It is built on a 32nm process.
What chipset does it use?
It uses the X79 chipset.
What is the maximum RAM supported?
It supports up to 64GB of DDR3 RAM.
Does it have VT-d support?
Yes, it supports Intel Virtualization Technology.
Is it better than the i7-3910K?
Yes, it has higher clock speeds.
Can I use NVMe drives with the i7-3930K?
Yes, via PCIe 3.0 adapters or supported X79 BIOS.