CPU Comparison

Intel Core i7-5775R vs Intel Core i7-6700

A side-by-side comparison of specs, performance and value. The Intel Core i7-5775R is a unique desktop processor based on the 14nm Broadwell architecture, distinguished by its use of BGA packaging and the inclusion of powerful Iris Pro Graphics. Designed primarily for All-in-One (AIO) systems and Intel NUCs, this chip is soldered directly to the motherboard. It features four cores and eight threads, operating at a base clock of 3.3 GHz and boosting up to 3.8 GHz. The standout feature is the integrated Intel Iris Pro Graphics 6200, which includes 128 MB of embedded L4 cache (eDRAM), drastically improving both graphical performance and CPU memory access speeds. With a 65-watt TDP, it balances performance and efficiency. The processor supports dual-channel DDR3 memory and provides 16 PCIe 3.0 lanes. While not intended for gaming with discrete GPUs, its integrated graphics were revolutionary for the time, allowing compact systems to handle moderate gaming and 4K media without a dedicated card.

Intel · Core i7
Intel Core i7-5775R
4C / 8T3.8 GHz65 W
8
Full review
Intel · Core i7
Intel Core i7-6700
4C / 8T4 GHz65 W
8
Full review

The Bottom Line

Overview & Launch

Brand
Intel
Intel
Market
Desktop
Desktop
Segment
Desktop
Desktop
Generation
Core i7 (Broadwell)
Core i7 (Skylake)
Launched
2015
2015
Status
End-of-life
End-of-life
Codename
Broadwell
Skylake
Series
Core i7
Core i7
Family
5th Generation
6th Generation
Predecessor
Intel Core i7-4770R
Intel Core i7-4790
Successor
Intel Core i7-6700
Intel Core i7-7700

Specifications Compared

Cores & Clocks
Cores
4
4
Threads
8
8
Base Clock
3.3 GHz
3.4 GHz
Boost Clock
3.8 GHz
4 GHz
Cache & Power
L3 Cache
6 MB
8 MB
TDP
65 W
65 W
Architecture
Architecture
Broadwell
Skylake
Process Node
14nm
14nm
Memory
Memory Type
DDR3
DDR3, DDR4
Memory Speed
1866 MT/s
2133 MT/s
Memory Channels
Dual (2)
Dual (2)
Max Memory
32 GB
64 GB
Platform & I/O
Socket
Intel BGA 1364
Intel Socket 1151
PCIe Version
Gen 3
Gen 3
PCIe Lanes
16
16
Integrated GPU
Yes
Yes
Unlocked
No
No

Performance Compared

Productivity

Intel Core i7-5775R70

4 cores and high IPC handle office tasks effortlessly.

Intel Core i7-6700Best75

Handles office workloads and multitasking without issues.

Gaming

Intel Core i7-5775R50

Iris Pro 6200 can handle older or eSports titles at 720p/1080p Low.

Intel Core i7-6700Best65

Good for 60fps gaming with a discrete GPU, but struggles with modern high-refresh titles.

Virtualization

Intel Core i7-5775R55

Capable of light VMs, but limited by 65W TDP.

Intel Core i7-6700Best60

Capable of running 1-2 light VMs.

Efficiency

Intel Core i7-5775RBest95

14nm process makes it incredibly power-efficient.

Intel Core i7-670090

Highly efficient 65W design.

Specialized Performance

AI / ML

Intel Core i7-5775RLimited
  • No AI hardware
  • eDRAM helps slightly with CPU inference
Intel Core i7-6700Limited
  • No AI hardware
  • CPU inference is slow

Content Creation

Intel Core i7-5775RFair
Basic Photo Editing1080p Video EditingAudio Production
Intel Core i7-6700Fair
Basic Photo Editing1080p Video EditingAudio Production

Gaming

Intel Core i7-5775RFair
  • Iris Pro 6200 was great for integrated graphics
  • Can play older AAA games at low settings
  • Not suitable for modern AAA titles
Intel Core i7-6700Good
  • Needs a discrete GPU for modern gaming
  • Quad-core design is aging for new AAA games
  • Great for older or esports titles

Industry Impact

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

Best CPU by Use Case

Light Gaming
Good
4K Media Playback
Excellent
Excellent
Office Productivity
Excellent
Excellent
Web Browsing
Excellent
Heavy Rendering
Poor
Poor
1080p Gaming (with GPU)
Very Good
Programming
Very Good

Target Audience

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

Strengths & Weaknesses

Intel Core i7-5775R

Pros

  • Powerful Iris Pro 6200 graphics
  • 128 MB L4 eDRAM
  • Highly efficient 14nm process
  • Good CPU performance

Cons

  • Soldered to motherboard (BGA)
  • Locked multiplier
  • Only supports DDR3
  • Hard to find standalone
Intel Core i7-6700

Pros

  • Excellent power efficiency (65W)
  • Solid single-core performance
  • Supports DDR4 memory
  • Good integrated graphics

Cons

  • Only 4 cores
  • Locked multiplier
  • No PCIe 4.0
  • Outdated platform

Competitors & Alternatives

Intel Core i7-5775R

Intel Core i7-6700

Our Verdict on Each

A revolutionary processor for integrated graphics, bringing Iris Pro 6200 to compact form factors, though its BGA nature limits DIY appeal.

Best for: Purchasing a used AIO or NUC for basic office work or media consumption.

Read the full review

A reliable and efficient quad-core CPU that was the gold standard for mainstream desktop computing in 2015, still capable of basic tasks today.

Best for: Upgrading an older LGA 1151 system for budget 1080p gaming.

Read the full review

Frequently Asked Questions

Which is faster for gaming, Intel Core i7-5775R or Intel Core i7-6700?

For gaming, the Intel Core i7-6700 leads with a gaming performance score of 65/100 among Intel Core i7-5775R and Intel Core i7-6700.

Do Intel Core i7-5775R and Intel Core i7-6700 use the same socket?

No. They use different sockets (Intel Core i7-5775R: Intel BGA 1364, Intel Core i7-6700: Intel Socket 1151), so each needs a compatible motherboard.

Which is faster in multi-core benchmarks?

The Intel Core i7-6700 posts the highest multi-core benchmark score. Multi-core results: Intel Core i7-5775R (7,000), Intel Core i7-6700 (7,500). Benchmark figures are approximate and workload-dependent.