CPU Comparison
Intel Core i7-990X vs Core i7-3930K
A side-by-side comparison of specs, performance and value. Launched in February 2011, the Intel Core i7-990X was the ultimate swan song for the LGA 1366 platform. As a Gulftown-based Extreme Edition processor, it took the formula of the i7-980X and pushed the frequencies slightly higher, offering a base clock of 3.46GHz and a turbo boost of 3.73GHz. This six-core, twelve-thread monster was designed for uncompromising enthusiasts who needed maximum performance for rendering, encoding, and heavy multitasking. The 32nm process allowed it to maintain the same 130W TDP as its predecessor despite the clock speed bump. With 12MB of shared L3 cache and triple-channel DDR3 support, it represented the peak of the Nehalem/Westmere era. While obsolete by modern standards, the 990X remains a legendary piece of hardware, representing a time when raw clock speed and core count scaling were the primary metrics of desktop CPU dominance.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Capable for basic legacy tasks, but severely outpaced by modern hardware.
6 cores and 12 threads hold up well for content creation.
Gaming
Slightly better than the 980X due to clocks, but still bottlenecks modern games.
Still decent for modern gaming, though single-core is slower than new CPUs.
Virtualization
12 threads are still somewhat useful for basic VM labs.
Excellent for VMs with 12 threads and quad-channel memory.
Efficiency
130W TDP remains highly inefficient compared to modern nodes.
130W TDP and 32nm process mean it runs hot and uses power.
Specialized Performance
AI / ML
- No modern AI acceleration
- Too slow for modern inference
- No AI hardware
- PCIe 3.0 is okay for basic inference cards
Content Creation
Gaming
- Low IPC
- Lacks AVX2
- Bottlenecks modern GPUs
- 6 cores help with modern titles
- Overclocks well to improve single-core
- PCIe 3.0 supports modern GPUs
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- Highest clock speeds for LGA 1366
- Unlocked multiplier
- 6 cores and 12 threads
- 12MB L3 cache
- Excellent legacy multi-threaded performance
Cons
- Very expensive on the used market
- Obsolete platform
- High power consumption
- No integrated graphics
- Lacks modern instruction sets like AVX2
Pros
- 6 cores and 12 threads
- 40 PCIe 3.0 lanes
- Massive 12MB L3 cache
- Excellent overclocker
Cons
- High 130W TDP
- 32nm process is inefficient
- No integrated graphics
- Obsolete X79 platform
Competitors & Alternatives
Intel Core i7-990X
- RivalCompare head-to-head
- AMD FX-8150Rival
Desktop
- Intel Xeon X5690Rival
Workstation
- AMD Phenom II X6 1100TRival
Desktop
- Intel Core i7-2600KRival
Desktop
- Intel Xeon X5675Alt
A much cheaper server equivalent that can be overclocked on X58.
- Intel Core i5-12400FAlt
A modern budget CPU that obliterates it in every metric.
- AMD Ryzen 5 5600Alt
A modern 6-core CPU with vastly superior efficiency and IPC.
- Intel Core i7-3930KAlt
The direct successor platform offering better upgrade paths.
Core i7-3930K
- AMD FX-8150Rival
Desktop
- Intel Core i7-3960XRival
HEDT
- Intel Core i7-3910KRival
HEDT
- AMD FX-8350Rival
Desktop
- Compare head-to-headIntel Core i7-2700KRival
Desktop
- Intel Core i7-4930KAlt
Ivy Bridge-E successor with slightly better performance.
Haswell-E successor with DDR4 support.
Compare head-to-headHaswell-E with 40 PCIe lanes and DDR4.
Compare head-to-headBroadwell-E successor with better efficiency.
Compare head-to-head
Our Verdict on Each
The fastest processor of its generation. A collector's dream today, but practically obsolete for modern workloads.
Best for: Keeping an existing X58 system alive as long as possible.
Read the full reviewA legendary HEDT CPU that brought 6 cores to the masses. Still capable for budget workstations today.
Best for: Budget 6-core workstation build
Read the full reviewFrequently Asked Questions
Which is better, Intel Core i7-990X or Core i7-3930K?
Based on our editorial ratings, the Intel Core i7-990X comes out ahead with a score of 8.8/10. 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 i7-990X or Core i7-3930K?
For gaming, the Core i7-3930K leads with a gaming performance score of 60/100 among Intel Core i7-990X and Core i7-3930K.
Do Intel Core i7-990X and Core i7-3930K use the same socket?
No. They use different sockets (Intel Core i7-990X: LGA 1366, Core i7-3930K: LGA 2011), so each needs a compatible motherboard.
Which is faster in multi-core benchmarks?
The Core i7-3930K posts the highest multi-core benchmark score. Multi-core results: Intel Core i7-990X (0), Core i7-3930K (13,000). Benchmark figures are approximate and workload-dependent.