i7-8665U vs i7-4950HQ
Aggregate performance score
Core i7-4950HQ outperforms Core i7-8665U by a small 5% based on our aggregate benchmark results.
Primary details
Comparing Core i7-4950HQ and Core i7-8665U processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1380 | 1425 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Core i7 | Intel Core i7 |
| Power efficiency | 8.34 | 24.86 |
| Architecture codename | Crystalwell (2013−2014) | Whiskey Lake-U (2018−2019) |
| Release date | 2 June 2013 (11 years ago) | 16 April 2019 (5 years ago) |
| Launch price (MSRP) | $657 | $409 |
Detailed specifications
Core i7-4950HQ and Core i7-8665U basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.
| Physical cores | 4 (Quad-Core) | 4 (Quad-Core) |
| Threads | 8 | 8 |
| Base clock speed | 2.4 GHz | 1.9 GHz |
| Boost clock speed | 3.6 GHz | 4.8 GHz |
| Bus type | DMI 2.0 | OPI |
| Bus rate | 5 GT/s | 4 GT/s |
| Multiplier | 24 | 19 |
| L1 cache | 64K (per core) | 256 KB |
| L2 cache | 1 MB | 1 MB |
| L3 cache | 6 MB | 8 MB (shared) |
| Chip lithography | 22 nm | 14 nm |
| Die size | 264 mm2 | no data |
| Maximum core temperature | 100 °C | 100 °C |
| Maximum case temperature (TCase) | 100 °C | no data |
| Number of transistors | 1,400 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
| Unlocked multiplier | + | - |
Compatibility
Information on Core i7-4950HQ and Core i7-8665U compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.
| Number of CPUs in a configuration | 1 | 1 (Uniprocessor) |
| Socket | FCBGA1364 | FCBGA1528 |
| Power consumption (TDP) | 47 Watt | 15 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i7-4950HQ and Core i7-8665U. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 |
| AES-NI | + | + |
| AVX | + | + |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | + |
| Speed Shift | no data | + |
| My WiFi | + | + |
| Turbo Boost Technology | 2.0 | 2.0 |
| Hyper-Threading Technology | + | + |
| TSX | + | + |
| Idle States | + | + |
| Thermal Monitoring | + | + |
| Flex Memory Access | no data | + |
| SIPP | - | + |
| Smart Response | no data | + |
| FDI | + | no data |
Security technologies
Core i7-4950HQ and Core i7-8665U technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
| EDB | + | + |
| Secure Key | + | + |
| MPX | - | + |
| Identity Protection | + | + |
| SGX | no data | Yes with Intel® ME |
| OS Guard | no data | + |
| Anti-Theft | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i7-4950HQ and Core i7-8665U are enumerated here.
| AMD-V | + | + |
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i7-4950HQ and Core i7-8665U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR4 |
| Maximum memory size | 32 GB | 64 GB |
| Max memory channels | 2 | 2 |
| Maximum memory bandwidth | 25.6 GB/s | 38.397 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel Iris Pro Graphics 5200 | Intel® UHD Graphics for 8th Generation Intel® Processors |
| Max video memory | 2 GB | 32 GB |
| Quick Sync Video | + | + |
| Clear Video | no data | + |
| Clear Video HD | + | + |
| Graphics max frequency | 1.3 GHz | 1.15 GHz |
| InTru 3D | + | no data |
Graphics interfaces
Available interfaces and connections of Core i7-4950HQ and Core i7-8665U integrated GPUs.
| Number of displays supported | 3 | 3 |
| eDP | + | + |
| DisplayPort | + | + |
| HDMI | + | + |
| DVI | no data | + |
| VGA | + | no data |
Graphics image quality
Maximum display resolutions supported by Core i7-4950HQ and Core i7-8665U integrated GPUs, including resolutions over different interfaces.
| 4K resolution support | no data | + |
| Max resolution over HDMI 1.4 | 3840x2160@30Hz | 4096 x 2304@24Hz |
| Max resolution over eDP | no data | 4096 x 2304@60Hz |
| Max resolution over DisplayPort | 3840x2160@60Hz | 4096 x 2304@60Hz |
| Max resolution over VGA | 2880x1800@60Hz | no data |
Graphics API support
APIs supported by Core i7-4950HQ and Core i7-8665U integrated GPUs, sometimes API versions are included.
| DirectX | 11.2/12 | 12 |
| OpenGL | 4.3 | 4.5 |
Peripherals
Specifications and connection of peripherals supported by Core i7-4950HQ and Core i7-8665U.
| PCIe version | 3 | 3.0 |
| PCI Express lanes | 16 | 16 |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
Cinebench 11.5 64-bit multi-core
Cinebench Release 11.5 Multi Core is a variant of Cinebench R11.5 which uses all the processor threads. A maximum of 64 threads is supported in this version.
Cinebench 11.5 64-bit single-core
Cinebench R11.5 is an old benchmark by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version loads a single thread with ray tracing to render a glossy room full of crystal spheres and light sources.
Pros & cons summary
| Performance score | 4.30 | 4.09 |
| Recency | 2 June 2013 | 16 April 2019 |
| Chip lithography | 22 nm | 14 nm |
| Power consumption (TDP) | 47 Watt | 15 Watt |
i7-4950HQ has a 5.1% higher aggregate performance score.
i7-8665U, on the other hand, has an age advantage of 5 years, a 57.1% more advanced lithography process, and 213.3% lower power consumption.
Given the minimal performance differences, no clear winner can be declared between Core i7-4950HQ and Core i7-8665U.
Should you still have questions on choice between Core i7-4950HQ and Core i7-8665U, ask them in Comments section, and we shall answer.
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