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.

Intel · Core i7
Core i7-870
4C / 8T3.6 GHz95 W
8
Full review
Top pick
Intel · Core i7
Intel Core i7-920
4C / 8T2.93 GHz130 W
9
Full review

The Bottom Line

Overview & Launch

Brand
Intel
Intel
Market
Desktop
Desktop
Segment
Desktop High-End
Desktop
Generation
Core i7 (Lynnfield)
1st Generation (Nehalem)
Launched
2009
2008
Status
End-of-life
End-of-life
Codename
Lynnfield
Bloomfield
Series
Core i7
Core i7
Family
1st Gen Core i7
Bloomfield
Predecessor
Core 2 Quad Q9650
Intel Core 2 Quad Q9650
Successor
Core i7-2600
Intel Core i7-930

Specifications Compared

Cores & Clocks
Cores
4
4
Threads
8
8
Base Clock
2.933 GHz
2.66 GHz
Boost Clock
3.6 GHz
2.93 GHz
Cache & Power
L3 Cache
8 MB
8 MB
TDP
95 W
130 W
Architecture
Architecture
Lynnfield
Nehalem (Bloomfield)
Process Node
45nm
45nm
Memory
Memory Type
DDR3
DDR3
Memory Speed
1333 MT/s
DDR3-1066
Memory Channels
Dual (2)
Triple (3)
Max Memory
24 GB
Platform & I/O
Socket
Intel Socket 1156
LGA 1366
PCIe Version
Gen 2
PCIe 2.0
PCIe Lanes
16
36
Integrated GPU
None
None
Unlocked
No
No

Performance Compared

Productivity

Core i7-870Best38

Fastest Lynnfield at launch, but obsolete now.

Intel Core i7-92025

Slow by modern standards, but 8 threads help slightly.

Gaming

Core i7-870Best37

Handles old games well but bottlenecks modern titles.

Intel Core i7-92030

Severely bottlenecks modern GPUs, but fine for retro games.

Virtualization

Core i7-870Best42

Good for legacy VMs.

Intel Core i7-92040

Capable of running basic VMs for legacy environments.

Efficiency

Core i7-870Best45

95W TDP is acceptable for 45nm.

Intel Core i7-92010

130W TDP on a 45nm quad-core is terribly inefficient today.

Specialized Performance

AI / ML

Core i7-870None
  • No AI hardware
  • Unsuitable for modern inference
Intel Core i7-920None
  • Incompatible with modern AI workloads

Content Creation

Core i7-870Legacy
Legacy PremierePhotoshop3D Modeling
Intel Core i7-920Poor (Modern)
Basic 1080p Editing (Legacy)

Gaming

Core i7-870Legacy
  • PCIe 2.0 only
  • No AVX support
  • Requires discrete GPU
Intel Core i7-920Poor (Modern)
  • Low IPC
  • No AVX2
  • High latency due to older architecture

Industry Impact

Gaming
High
High
Workstations
Moderate
High
Content Creation
High
Moderate
Virtualization
Moderate
Moderate

Best CPU by Use Case

High-End Gaming
Excellent (for 2009)
Video Editing
Very Good
3D Rendering
Good
Streaming
Moderate
Retro Gaming
Very Good
Legacy Video Editing
Good
Basic Virtualization
Good
Modern Gaming
Poor
Modern Office Work
Poor

Target Audience

Gamers
Targeted
Targeted
Content Creators
Targeted
Targeted
Developers
Targeted
Targeted
Workstation Users
Targeted
Streamers
Targeted
Office / Productivity
Students

Strengths & Weaknesses

Core i7-870

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
Intel Core i7-920

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 965

    Desktop High-End

    Rival
  • Intel Core i5-750

    Desktop Mainstream

    Rival
    Compare head-to-head
  • Intel Core i7-920

    Desktop High-End

    Rival
    Compare head-to-head
  • AMD Phenom II X6 1055T

    Desktop High-End

    Rival
  • Intel Core 2 Quad Q9650

    Legacy High-End

    Rival
  • Intel Core i7-860
    Alt

    Cheaper, similar performance in most tasks.

  • Intel Core i7-875K
    Alt

    Unlocked alternative for overclocking.

  • Intel Core i7-2600
    Alt

    The direct Sandy Bridge successor.

Intel Core i7-920

Our Verdict on Each

Core i7-870Situational

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 review

Historically 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 review

Frequently 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.