CPU Comparison

Core i7-4850EQ vs Core i7-940XM

A side-by-side comparison of specs, performance and value. The Intel Core i7-4850EQ is a mobile processor launched in 2013, designed for embedded systems and high-performance mobile workstations. Built on the 22-nanometer Haswell architecture, it was part of the Crystalwell family, notable for integrating a massive 128 MB L4 eDRAM cache. The processor features four cores and eight threads, operating at a base frequency of 1.6 GHz and boosting up to 3.2 GHz. This low base clock and high turbo capability allowed it to scale efficiently based on thermal loads. It includes 8 MB of L3 cache and integrates Intel HD Graphics 5200, also known as Iris Pro, which utilizes the eDRAM for massive bandwidth gains. With a 47-watt thermal design power, it was engineered for devices requiring desktop-class graphics and compute power in constrained mobile or embedded form factors. Though end-of-life, it remains a historically significant chip for its innovative packaging indeed.

Intel · Core i7
Core i7-4850EQ
4C / 8T3.2 GHz47 W
7.5
Full review
Intel · Core i7 Extreme
Core i7-940XM
4C / 8T3.333 GHz55 W
7.5
Full review

The Bottom Line

Overview & Launch

Brand
Intel
Intel
Market
Mobile
Mobile
Segment
Mobile Embedded
Mobile High-End
Generation
4th Gen Core i7
Core i7 Extreme (Clarksfield)
Launched
2013
2010
Status
End-of-life
End-of-life
Codename
Crystalwell
Clarksfield
Series
Core i7
Core i7 Extreme
Family
Crystalwell
1st Gen Core i7
Predecessor
Ivy Bridge (3rd Gen)
Core i7-920XM
Successor
Crystalwell Refresh (4th Gen)
Core i7-2920XM

Specifications Compared

Cores & Clocks
Cores
4
4
Threads
8
8
Base Clock
1.6 GHz
2.133 GHz
Boost Clock
3.2 GHz
3.333 GHz
Cache & Power
L3 Cache
8 MB
8 MB
TDP
47 W
55 W
Architecture
Architecture
Crystalwell
Clarksfield
Process Node
22nm
45nm
Memory
Memory Type
DDR3
DDR3
Memory Speed
DDR3-1600
1333 MT/s
Memory Channels
Dual (2)
Dual (2)
Max Memory
32 GB
Platform & I/O
Socket
Intel BGA 1364
Intel Socket G1
PCIe Version
PCIe 3.0
Gen 2
PCIe Lanes
16
16
Integrated GPU
Yes
None
Unlocked
No
Yes

Performance Compared

Productivity

Core i7-4850EQBest45

Solid quad-core performance for professional workloads.

Core i7-940XM36

Slightly faster than the 920XM but still heavily outclassed by modern CPUs.

Gaming

Core i7-4850EQ40

Iris Pro 5200 allowed for 1080p medium gaming in 2013.

Core i7-940XMBest42

Handles legacy games well but bottlenecks modern GPUs and games.

Virtualization

Core i7-4850EQ40

Good VM performance with VT-d and quad cores.

Core i7-940XMBest46

Adequate for legacy mobile VMs but lacks modern I/O.

Efficiency

Core i7-4850EQBest25

22nm process and 47W TDP result in high heat by modern standards.

Core i7-940XM20

Power hungry and inefficient by modern standards.

Specialized Performance

AI / ML

Core i7-4850EQNone
  • No AI hardware
  • eDRAM does not benefit modern AI significantly
Core i7-940XMNone
  • No AI hardware support
  • Pure legacy x86 performance

Content Creation

Core i7-4850EQVery Good
Premiere ProAutoCADBlenderPhotoshop
Core i7-940XMLegacy
Legacy Video EditingLegacy 3D ModelingAudio Production

Gaming

Core i7-4850EQGood (For iGPU)
  • Comparable to entry-level discrete GPUs of its era
  • eDRAM provides stable frame rates
  • Good for 720p/1080p medium gaming
Core i7-940XMLegacy
  • Highest clocks for Socket G1
  • No integrated graphics
  • Bottlenecks modern GPUs

Industry Impact

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

Best CPU by Use Case

Mobile Workstation
Very Good
Gaming
Good
Video Editing
Good
Very Good
CAD
Very Good
Embedded Computing
Excellent
Mobile Gaming
Excellent (for 2010)
3D Rendering
Good
Basic Productivity
Overkill

Target Audience

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

Strengths & Weaknesses

Core i7-4850EQ

Pros

  • Iris Pro 5200 with 128MB eDRAM
  • Quad-core performance for 2013
  • Good for embedded applications
  • Large 8MB L3 cache

Cons

  • High 47W TDP
  • 22nm process is inefficient
  • DDR3 memory only
  • Soldered to motherboard
  • Obsolete for modern tasks
Core i7-940XM

Pros

  • Fastest Socket G1 CPU
  • Unlocked multiplier
  • High turbo clock
  • 8MB L3 cache

Cons

  • Extremely power hungry
  • No integrated graphics
  • Obsolete platform
  • Produces excessive heat

Competitors & Alternatives

Core i7-4850EQ

Core i7-940XM

  • Intel Core i7-920XM

    Mobile Extreme

    Rival
  • Intel Core i7-840QM

    Mobile High-End

    Rival
  • AMD Phenom II X4 Mobile

    Mobile High-End

    Rival
  • Intel Core i7-740QM

    Mobile Mid-Range

    Rival
  • Intel Core 2 Extreme QX9300

    Legacy Mobile Extreme

    Rival
  • Intel Core i7-2820QM
    Alt

    Massive leap in efficiency and performance (Sandy Bridge).

  • AMD A8-3550MX
    Alt

    More efficient, though weaker, alternative.

  • Intel Core i5-2520M
    Alt

    Dual-core but vastly superior efficiency and single-thread speed.

Our Verdict on Each

Core i7-4850EQSituational

An innovative 4th Gen processor that brought console-like eDRAM architecture to mobile PCs, offering excellent integrated graphics for its time.

Best for: Industrial retrofitting or restoring a legacy MacBook Pro.

Read the full review
Core i7-940XMSituational

The fastest Clarksfield chip, offering a minor clock speed bump over the 920XM, but equally obsolete today.

Best for: Upgrading an existing high-end 2010 DTR laptop.

Read the full review

Frequently Asked Questions

Which is faster for gaming, Core i7-4850EQ or Core i7-940XM?

For gaming, the Core i7-940XM leads with a gaming performance score of 42/100 among Core i7-4850EQ and Core i7-940XM.

Which uses less power?

The Core i7-4850EQ has the lowest rated TDP. Power draw across these chips: Core i7-4850EQ (47 W), Core i7-940XM (55 W).

Do Core i7-4850EQ and Core i7-940XM use the same socket?

No. They use different sockets (Core i7-4850EQ: Intel BGA 1364, Core i7-940XM: Intel Socket G1), so each needs a compatible motherboard.