CPU Comparison
Intel Core i7-975 vs Intel Core i7-980X
A side-by-side comparison of specs, performance and value. The Intel Core i7-975 Extreme Edition, launched in June 2009, was a refined refresh of the original Nehalem flagship, the i7-965. Utilizing the improved D0 stepping of the 45nm Bloomfield die, it offered a higher base clock of 3.33GHz and a turbo boost of 3.6GHz. As a four-core, eight-thread processor, it represented the absolute pinnacle of quad-core performance for the LGA 1366 platform. The Extreme Edition branding guaranteed an unlocked multiplier, making it the ultimate chip for enthusiasts. Despite retaining the 130W TDP, the D0 stepping improved thermal behavior and overclocking headroom. Priced at $999, it was a halo product aimed at uncompromising power users. The i7-975 held the performance crown until the six-core Gulftown chips arrived, cementing its legacy as the peak of the 45nm era.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
8 threads help, but low IPC limits modern apps.
Six cores help with basic tasks, but slow clocks limit modern productivity apps.
Gaming
Best single-core of the Bloomfields, but still bottlenecks modern games.
Struggles with modern games due to low single-core IPC and lack of AVX2.
Virtualization
Good for basic VMs and legacy server setups.
Adequate for basic retro VM labs, but lacks modern I/O.
Efficiency
130W TDP is highly inefficient, though slightly better than 965.
Extremely poor efficiency by modern standards with a 130W TDP.
Specialized Performance
AI / ML
- Incompatible with modern AI workloads
- No AI acceleration hardware
- Too slow for modern inference
Content Creation
Gaming
- Low IPC
- No AVX2
- Bottlenecks modern GPUs
- Low IPC
- No AVX2 support
- Bottlenecks modern GPUs
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- Highest stock clocks for Bloomfield
- Fully unlocked multiplier
- Improved D0 stepping for better thermals
- Hyper-Threading for 8 threads
- Triple-channel memory support
Cons
- Extremely high launch price ($999)
- High 130W TDP
- Obsolete platform
- Lacks modern instruction sets
- Poor value today
Pros
- First consumer 6-core CPU
- Unlocked multiplier for overclocking
- 12MB L3 cache
- Triple-channel memory support
- Good overclocking headroom for its era
Cons
- High 130W TDP
- No integrated graphics
- Obsolete LGA 1366 platform
- Lacks modern instruction sets (AVX2)
- Poor single-core performance by modern standards
Competitors & Alternatives
Intel Core i7-975
- RivalCompare head-to-head
- AMD Phenom II X4 965Rival
Desktop
- Compare head-to-headIntel Core i7-960Rival
Desktop
- Intel Core 2 Extreme QX9770Rival
HEDT
- AMD Phenom II X6 1090TRival
Desktop
- Intel Xeon W3580Alt
Server equivalent often available for less.
- AMD Ryzen 5 3600Alt
A modern budget CPU that vastly outperforms it.
- Intel Core i5-12400FAlt
A modern budget CPU that obliterates it.
Intel Core i7-980X
- AMD Phenom II X6 1100TRival
Desktop
- RivalCompare head-to-head
- AMD Opteron 2419 EERival
Server
- Intel Xeon X5670Rival
Workstation
- AMD Phenom II X6 1090TRival
Desktop
- Intel Core i7-970Alt
A cheaper, locked 6-core option on the same platform.
- Intel Xeon X5650Alt
A much cheaper server equivalent that can be overclocked on X58.
- AMD Ryzen 5 3600Alt
A modern budget CPU that vastly outperforms it.
- Intel Core i5-12400FAlt
A modern alternative with vastly superior single-core performance.
- AMD Ryzen 7 5700XAlt
A modern 8-core CPU with excellent efficiency.
Our Verdict on Each
The pinnacle of the 45nm quad-core era. A legendary overclocker's chip that is now a collector's item.
Best for: Collector's showcase or extreme retro overclocking build.
Read the full reviewA revolutionary processor in 2010 that brought six cores to consumers. Today, it is a nostalgic collector's item with limited modern utility.
Best for: Retro enthusiast build or maintaining an existing LGA 1366 system.
Read the full reviewFrequently Asked Questions
Which is better, Intel Core i7-975 or Intel Core i7-980X?
Based on our editorial ratings, the Intel Core i7-975 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 i7-975 or Intel Core i7-980X?
For gaming, the Intel Core i7-980X leads with a gaming performance score of 40/100 among Intel Core i7-975 and Intel Core i7-980X.
Do Intel Core i7-975 and Intel Core i7-980X use the same socket?
Yes — all of these CPUs use the LGA 1366 socket, so they share compatible motherboards.
Which has more cores?
The Intel Core i7-980X has the most cores. Core counts: Intel Core i7-975 (4 cores), Intel Core i7-980X (6 cores).