i7-8670 vs i5-661
Primary details
Comparing Core i5-661 and Core i7-8670 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2107 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.08 | no data |
| Market segment | Desktop processor | Desktop processor |
| Series | no data | Intel Core i7 |
| Power efficiency | 1.69 | no data |
| Architecture codename | Clarkdale (2010−2011) | Coffee Lake (2017−2019) |
| Release date | 7 January 2010 (14 years ago) | 1 January 2018 (6 years ago) |
| Launch price (MSRP) | $252 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Core i5-661 and Core i7-8670 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 | 2 (Dual-core) | 6 (Hexa-Core) |
| Threads | 4 | 12 |
| Base clock speed | 3.33 GHz | 3.1 GHz |
| Boost clock speed | 3.6 GHz | 4.4 GHz |
| Bus type | no data | DMI 3.0 |
| Bus rate | 2.5 GT/s | 4 × 8 GT/s |
| L1 cache | 64 KB (per core) | 384 KB |
| L2 cache | 256 KB (per core) | 1.5 MB |
| L3 cache | 4 MB (shared) | 12 MB (shared) |
| Chip lithography | 32 nm | 14 nm |
| Die size | 81 mm2 | 149 mm2 |
| Maximum core temperature | 70 °C | no data |
| Maximum case temperature (TCase) | no data | 72 °C |
| Number of transistors | 382 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Core i5-661 and Core i7-8670 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 | FCLGA1156 | 1151 |
| Power consumption (TDP) | 87 Watt | 65 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i5-661 and Core i7-8670. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.2 | no data |
| AES-NI | + | + |
| AVX | - | + |
| vPro | no data | + |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | 1.0 | no data |
| Hyper-Threading Technology | + | no data |
| TSX | - | + |
| Idle States | + | no data |
| SIPP | - | + |
| Demand Based Switching | - | no data |
| PAE | 36 Bit | no data |
| FDI | + | no data |
Security technologies
Core i5-661 and Core i7-8670 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
| EDB | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i5-661 and Core i7-8670 are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i5-661 and Core i7-8670. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR4 Dual-channel |
| Maximum memory size | 16.38 GB | 64 GB |
| Max memory channels | 2 | 2 |
| Maximum memory bandwidth | 21 GB/s | 42.671 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel® HD Graphics for Previous Generation Intel® Processors | Intel UHD Graphics 630 |
| Clear Video HD | + | no data |
Graphics interfaces
Available interfaces and connections of Core i5-661 and Core i7-8670 integrated GPUs.
| Number of displays supported | 2 | no data |
Peripherals
Specifications and connection of peripherals supported by Core i5-661 and Core i7-8670.
| PCIe version | 2.0 | 3.0 |
| PCI Express lanes | 16 | no data |
Pros & cons summary
| Recency | 7 January 2010 | 1 January 2018 |
| Physical cores | 2 | 6 |
| Threads | 4 | 12 |
| Chip lithography | 32 nm | 14 nm |
| Power consumption (TDP) | 87 Watt | 65 Watt |
i7-8670 has an age advantage of 7 years, 200% more physical cores and 200% more threads, a 128.6% more advanced lithography process, and 33.8% lower power consumption.
We couldn't decide between Core i5-661 and Core i7-8670. We've got no test results to judge.
Should you still have questions on choice between Core i5-661 and Core i7-8670, ask them in Comments section, and we shall answer.
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