CPU Comparison
Core i7-5850HQ vs Intel Core i7-8559U
A side-by-side comparison of specs, performance and value. The Intel Core i7-5850HQ is a high-end mobile processor released in 2015, engineered for premium laptops and mobile workstations where graphics performance is paramount. Part of the Broadwell-H family, it is built on a 14-nanometer process, offering notable power efficiency improvements over the preceding Haswell architecture. The chip integrates four physical cores and eight threads, handling multi-threaded workloads with competence. Its base clock sits at 2.7 GHz, with the ability to turbo boost up to 3.6 GHz when thermal conditions permit. What sets the 5850HQ apart is the inclusion of Iris Pro Graphics 6200 paired with 128 MB of embedded DRAM (eDRAM). This L4 cache provides exceptional bandwidth for integrated graphics, drastically improving frame rates in games and accelerating media tasks. Operating within a 47-watt TDP, this end-of-life processor remains a fascinating study in Intel's early efforts to bridge the CPU-iGPU performance gap in laptops efficiently.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Solid quad-core performance for 2015 applications.
High clock speeds ensure excellent performance in office and creative apps.
Gaming
Iris Pro handles older games well without a discrete GPU.
Iris Plus 655 allows for playable frame rates in older or well-optimized games.
Virtualization
Handles light VMs but constrained by DDR3 bandwidth.
Capable of running light VMs, though limited by 4 cores.
Efficiency
47W TDP generates significant heat in modern usage contexts.
28W TDP is efficient enough for laptops but warmer than 15W parts.
Specialized Performance
AI / ML
- No modern AI acceleration hardware
- eDRAM does not significantly aid modern AI workloads
- No dedicated AI hardware
- eDRAM can be utilized for certain compute workloads
Content Creation
Gaming
- Can play 2015-era games at 1080p low
- eDRAM prevents severe memory bottlenecks
- Not suitable for modern AAA gaming
- Iris Plus 655 is a major step up from UHD 620
- eDRAM helps with texture loading
- Can run macOS games smoothly
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- Iris Pro 6200 with eDRAM is powerful for integrated graphics
- Good quad-core CPU performance
- Hardware acceleration for media encoding
- Suitable for professional CAD work
Cons
- High 47W TDP
- DDR3 memory only
- Soldered BGA socket
- Obsolete by modern efficiency standards
- Short market lifespan
Pros
- High 4.5 GHz boost clock
- Iris Plus Graphics with 128MB eDRAM
- 28W TDP allows good sustained performance
- Excellent single-core speed
Cons
- Runs warmer than 15W U-series chips
- Soldered to motherboard
- 14nm process is outdated
- Limited to older platforms
Competitors & Alternatives
Core i7-5850HQ
- AMD FX-7500Rival
Mobile APU
- Intel Core i7-5750HQRival
Mobile Workstation
- Intel Core i7-5700HQRival
Mobile Performance
- Intel Core i7-6700HQAlt
Skylake architecture with DDR4 support.
- AMD Ryzen 5 5500UAlt
Modern alternative with much better efficiency and graphics.
- Alt
Revolutionary leap in mobile CPU and GPU efficiency.
Compare head-to-head Newer chip with similar eDRAM concepts but better performance.
Compare head-to-head- Intel Core i5-8259UAlt
Modern quad-core with Iris Plus graphics.
Intel Core i7-8559U
- AMD Ryzen 7 2700URival
Mobile
- Compare head-to-headIntel Core i7-8550URival
Mobile
- AMD Ryzen 7 3750HRival
Mobile
- Intel Core i5-8259URival
Mobile
- Apple A12X BionicRival
Mobile
- Alt
Vastly superior performance and efficiency for Mac users.
Compare head-to-head 10th Gen successor with 10nm process and better IPC.
Compare head-to-head- AMD Ryzen 7 4800UAlt
Much better multi-core performance in a similar power bracket.
- Intel Core i7-8665UAlt
Whiskey Lake alternative for business PCs.
- Alt
The modern standard for compact Mac desktops and laptops.
Compare head-to-head
Our Verdict on Each
A capable Broadwell chip that brought eDRAM-enhanced Iris Pro graphics to high-end laptops, though it runs hot by modern standards.
Best for: Buying a legacy workstation laptop for offline typing or media consumption.
Read the full reviewA premium 28W mobile processor that combined high clock speeds with powerful Iris Plus graphics, delivering an excellent balance of CPU and GPU performance.
Best for: If you are considering a laptop with the Intel Core i7-8559U, you are likely looking at a used MacBook Pro or a premium NUC. This processor remains highly capable for everyday productivity, programming, and light 1080p video editing. The inclusion of Iris Plus graphics with eDRAM provides a noticeable boost in graphical tasks compared to standard U-series chips. It is an excellent choice for users who need a compact, moderately powerful machine without paying the premium for Apple Silicon. However, be aware that it is an Intel-based Mac, meaning it will eventually lose macOS support. Avoid this processor if you need to run modern AAA games or heavy 3D rendering workloads. It is best purchased at a discount for general use and legacy software.
Read the full reviewFrequently Asked Questions
Which is better, Core i7-5850HQ or Intel Core i7-8559U?
Based on our editorial ratings, the Intel Core i7-8559U comes out ahead with a score of 8.5/10. That said, the best choice depends on your workload — check the spec and performance breakdown above for gaming, productivity and efficiency differences.
Which uses less power?
The Intel Core i7-8559U has the lowest rated TDP. Power draw across these chips: Core i7-5850HQ (47 W), Intel Core i7-8559U (28 W).
Do Core i7-5850HQ and Intel Core i7-8559U use the same socket?
No. They use different sockets (Core i7-5850HQ: Intel BGA 1364, Intel Core i7-8559U: Intel BGA 1356), so each needs a compatible motherboard.