CPU Comparison
Core i7-870 vs Intel Core i7-920
A side-by-side comparison of specs, performance and value. The Intel Core i7-870 is a high-end desktop processor launched in September 2009, based on the 45nm Lynnfield architecture. Operating at a base frequency of 2.933 GHz and boosting up to 3.6 GHz via Turbo Boost, it was the fastest Lynnfield chip at launch. It features 4 cores and 8 threads, supported by an 8 MB L3 cache. Utilizing the LGA 1156 socket, it brought the Nehalem microarchitecture to a more accessible platform than LGA 1366. It integrates a dual-channel DDR3 memory controller and 16 PCIe 2.0 lanes directly on the CPU. Like other Lynnfield chips, it lacks an integrated GPU. With a 95W TDP, it was relatively manageable to cool. The i7-870 was the premium choice for gamers and enthusiasts in 2009, offering excellent multi-threaded performance. It was eventually overshadowed by the unlocked i7-875K, but it remains a solid representative of the early Core i7 desktop era, though obsolete today.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Fastest Lynnfield at launch, but obsolete now.
Slow by modern standards, but 8 threads help slightly.
Gaming
Handles old games well but bottlenecks modern titles.
Severely bottlenecks modern GPUs, but fine for retro games.
Virtualization
Good for legacy VMs.
Capable of running basic VMs for legacy environments.
Efficiency
95W TDP is acceptable for 45nm.
130W TDP on a 45nm quad-core is terribly inefficient today.
Specialized Performance
AI / ML
- No AI hardware
- Unsuitable for modern inference
- Incompatible with modern AI workloads
Content Creation
Gaming
- PCIe 2.0 only
- No AVX support
- Requires discrete GPU
- Low IPC
- No AVX2
- High latency due to older architecture
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- High base and turbo clocks
- 8MB L3 cache
- Quad-core with HT
- Good 2009 performance
Cons
- Obsolete platform
- No integrated graphics
- Locked multiplier
- Expensive at launch
Pros
- Legendary overclocking headroom
- Affordable entry to Nehalem at launch
- Hyper-Threading for 8 threads
- Triple-channel memory support
- Massive historical impact
Cons
- High 130W TDP
- Locked CPU multiplier
- Obsolete LGA 1366 platform
- Lacks modern instruction sets
- Poor single-core performance today
Competitors & Alternatives
Core i7-870
- AMD Phenom II X4 965Rival
Desktop High-End
- Compare head-to-headIntel Core i5-750Rival
Desktop Mainstream
- Compare head-to-headIntel Core i7-920Rival
Desktop High-End
- AMD Phenom II X6 1055TRival
Desktop High-End
- Intel Core 2 Quad Q9650Rival
Legacy High-End
- Intel Core i7-860Alt
Cheaper, similar performance in most tasks.
- Intel Core i7-875KAlt
Unlocked alternative for overclocking.
- Intel Core i7-2600Alt
The direct Sandy Bridge successor.
Intel Core i7-920
- AMD Phenom II X4 940Rival
Desktop
- Intel Core 2 Quad Q9650Rival
Desktop
- AMD Phenom II X4 955Rival
Desktop
- Compare head-to-headIntel Core i7-940Rival
Desktop
- Compare head-to-headIntel Core i5-750Rival
Desktop
- Intel Xeon W3520Alt
The server equivalent of the 920, often cheaper on the used market.
A slightly faster refresh of the same architecture.
Compare head-to-head- AMD Ryzen 3 3300XAlt
A modern budget quad-core that vastly outperforms it.
A modern budget CPU that destroys it in every way.
Compare head-to-head- AMD Ryzen 5 3600Alt
A modern 6-core CPU that is lightyears ahead.
Our Verdict on Each
A powerful and expensive Lynnfield chip that delivered top-tier performance in 2009, though completely obsolete today.
Best for: Maintaining a legacy retro gaming rig.
Read the full reviewHistorically one of the best value CPUs ever made. Today, it is a nostalgic relic that paved the way for modern multi-core computing.
Best for: Retro enthusiast build or repairing a 2008-era system.
Read the full reviewFrequently Asked Questions
Which is better, Core i7-870 or Intel Core i7-920?
Based on our editorial ratings, the Intel Core i7-920 comes out ahead with a score of 9/10. 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, Core i7-870 or Intel Core i7-920?
For gaming, the Core i7-870 leads with a gaming performance score of 37/100 among Core i7-870 and Intel Core i7-920.
Which uses less power?
The Core i7-870 has the lowest rated TDP. Power draw across these chips: Core i7-870 (95 W), Intel Core i7-920 (130 W).
Do Core i7-870 and Intel Core i7-920 use the same socket?
No. They use different sockets (Core i7-870: Intel Socket 1156, Intel Core i7-920: LGA 1366), so each needs a compatible motherboard.
Which is faster in multi-core benchmarks?
The Intel Core i7-920 posts the highest multi-core benchmark score. Multi-core results: Intel Core i7-920 (0). Benchmark figures are approximate and workload-dependent.