CPU Comparison
Intel Core i7-950 vs Intel Core i7-975
A side-by-side comparison of specs, performance and value. Launched in June 2009, the Intel Core i7-950 was a welcome refresh to the Bloomfield lineup, effectively replacing the i7-940. By increasing the base clock to 3.06GHz and turbo boost to 3.33GHz, Intel provided a more compelling mainstream option for the LGA 1366 platform. This four-core, eight-thread processor retained the 45nm manufacturing process and 8MB of L3 cache. The higher stock frequencies made it noticeably faster out of the box than the legendary i7-920, requiring less aggressive overclocking to achieve high performance. It quickly became a popular choice for high-end gaming rigs and workstations, offering a good balance of price and capability. While it still carried a 130W TDP, the i7-950 solidified the Nehalem architecture's presence in the market until the 32nm Gulftown chips arrived. It is remembered as a reliable, high-performance workhorse for its era.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
8 threads help, but low IPC limits modern productivity.
8 threads help, but low IPC limits modern apps.
Gaming
Higher clocks help slightly over the 920, but still bottlenecks modern games.
Best single-core of the Bloomfields, but still bottlenecks modern games.
Virtualization
Good for basic VMs and legacy server setups.
Good for basic VMs and legacy server setups.
Efficiency
130W TDP is highly inefficient for a quad-core.
130W TDP is highly inefficient, though slightly better than 965.
Specialized Performance
AI / ML
- Incompatible with modern AI workloads
- Incompatible with modern AI workloads
Content Creation
Gaming
- Low IPC
- No AVX2
- Bottlenecks modern titles
- Low IPC
- No AVX2
- Bottlenecks modern GPUs
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- Good stock clock speed
- Hyper-Threading for 8 threads
- Triple-channel memory support
- Reliable and proven architecture
- Better value than the i7-940
Cons
- High 130W TDP
- Locked CPU multiplier
- Obsolete platform
- Lacks modern instruction sets
- Poor single-core performance today
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
Competitors & Alternatives
Intel Core i7-950
- AMD Phenom II X4 965Rival
Desktop
- Compare head-to-headIntel Core i7-920Rival
Desktop
- Compare head-to-headIntel Core i5-750Rival
Desktop
- AMD Phenom II X6 1055TRival
Desktop
- Intel Core i7-870Rival
Desktop
Slightly faster successor with similar used pricing.
Compare head-to-head- Intel Xeon W3550Alt
Server equivalent often available for less.
- AMD Ryzen 5 3600Alt
A modern budget CPU that vastly outperforms it.
A modern budget CPU that obliterates it.
Compare head-to-head
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.
Our Verdict on Each
A solid refresh that offered great out-of-the-box performance for LGA 1366. Obsolete today, but a reliable chip in its time.
Best for: Cheap drop-in upgrade for an old LGA 1366 system coming from an i7-920.
Read the full reviewThe 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 reviewFrequently Asked Questions
Which is better, Intel Core i7-950 or Intel Core i7-975?
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 i7-950 or Intel Core i7-975?
For gaming, the Intel Core i7-975 leads with a gaming performance score of 38/100 among Intel Core i7-950 and Intel Core i7-975.
Do Intel Core i7-950 and Intel Core i7-975 use the same socket?
Yes — all of these CPUs use the LGA 1366 socket, so they share compatible motherboards.