Core i7-8557U vs Core 2 Extreme X7800
Aggregate performance score
Core i7-8557U outperforms Core 2 Extreme X7800 by a whopping 545% based on our aggregate benchmark results.
Primary details
Comparing Core 2 Extreme X7800 and Core i7-8557U processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2689 | 1284 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Core 2 Extreme | Intel Core i7 |
| Power efficiency | 1.54 | 15.62 |
| Architecture codename | Merom XE (2007) | Coffee Lake-U (2018−2019) |
| Release date | 17 July 2007 (17 years ago) | 16 July 2019 (5 years ago) |
| Launch price (MSRP) | $851 | no data |
Detailed specifications
Core 2 Extreme X7800 and Core i7-8557U 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) | 4 (Quad-Core) |
| Threads | 2 | 8 |
| Base clock speed | 2.6 GHz | 1.7 GHz |
| Boost clock speed | 2.6 GHz | 4.5 GHz |
| Bus rate | 800 MHz | 4 GT/s |
| L1 cache | 128 KB | 256 KB |
| L2 cache | 4 MB | 1 MB |
| L3 cache | 4 MB L2 Cache | 8 MB |
| Chip lithography | 65 nm | 14 nm |
| Die size | 143 mm2 | no data |
| Maximum core temperature | 100 °C | 100 °C |
| Number of transistors | 291 Million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
| VID voltage range | 1.1V-1.375V | no data |
Compatibility
Information on Core 2 Extreme X7800 and Core i7-8557U 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 | no data | 1 |
| Socket | PPGA478 | FCBGA1528 |
| Power consumption (TDP) | 44 Watt | 15 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core 2 Extreme X7800 and Core i7-8557U. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 |
| AES-NI | - | + |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | + | + |
| eDRAM | no data | 128 MB |
| Speed Shift | no data | + |
| My WiFi | no data | + |
| Turbo Boost Technology | - | 2.0 |
| Hyper-Threading Technology | - | + |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| Flex Memory Access | no data | + |
| Demand Based Switching | - | no data |
| FSB parity | - | no data |
Security technologies
Core 2 Extreme X7800 and Core i7-8557U technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | - |
| EDB | + | + |
| Secure Key | no data | + |
| MPX | - | + |
| Identity Protection | - | + |
| SGX | no data | Yes with Intel® ME |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core 2 Extreme X7800 and Core i7-8557U are enumerated here.
| AMD-V | - | + |
| VT-d | no data | + |
| VT-x | + | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core 2 Extreme X7800 and Core i7-8557U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR4 |
| Maximum memory size | no data | 32 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | no data | 37.5 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | Intel Iris Plus Graphics 645 |
| Max video memory | no data | 32 GB |
| Quick Sync Video | - | + |
| Clear Video | no data | + |
| Clear Video HD | no data | + |
| Graphics max frequency | no data | 1.15 GHz |
| InTru 3D | no data | + |
Graphics interfaces
Available interfaces and connections of Core 2 Extreme X7800 and Core i7-8557U integrated GPUs.
| Number of displays supported | no data | 3 |
| eDP | no data | + |
| DisplayPort | - | + |
| HDMI | - | + |
| DVI | no data | + |
Graphics image quality
Maximum display resolutions supported by Core 2 Extreme X7800 and Core i7-8557U integrated GPUs, including resolutions over different interfaces.
| 4K resolution support | no data | + |
| Max resolution over HDMI 1.4 | no data | 4096 x 2304@30Hz |
| Max resolution over eDP | no data | 4096 x 2304@60Hz |
| Max resolution over DisplayPort | no data | 4096 x 2304@60Hz |
Graphics API support
APIs supported by Core 2 Extreme X7800 and Core i7-8557U integrated GPUs, sometimes API versions are included.
| DirectX | no data | 12 |
| OpenGL | no data | 4.5 |
Peripherals
Specifications and connection of peripherals supported by Core 2 Extreme X7800 and Core i7-8557U.
| PCIe version | no data | 3.0 |
| PCI Express lanes | no data | 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.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.
Pros & cons summary
| Performance score | 0.73 | 4.71 |
| Recency | 17 July 2007 | 16 July 2019 |
| Physical cores | 2 | 4 |
| Threads | 2 | 8 |
| Chip lithography | 65 nm | 14 nm |
| Power consumption (TDP) | 44 Watt | 15 Watt |
i7-8557U has a 545.2% higher aggregate performance score, an age advantage of 11 years, 100% more physical cores and 300% more threads, a 364.3% more advanced lithography process, and 193.3% lower power consumption.
The Core i7-8557U is our recommended choice as it beats the Core 2 Extreme X7800 in performance tests.
Should you still have questions on choice between Core 2 Extreme X7800 and Core i7-8557U, ask them in Comments section, and we shall answer.
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