Pentium 3805U vs Core 2 Extreme QX9775
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 2893 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 0.04 |
| Market segment | Desktop processor | Laptop |
| Series | no data | Intel Pentium |
| Power efficiency | no data | 1.92 |
| Designer | Intel | Intel |
| Manufacturer | Intel | Intel |
| Architecture codename | Yorkfield (2007−2009) | Broadwell-U (2015) |
| Release date | 24 March 2008 (17 years ago) | 1 March 2015 (10 years ago) |
| Launch price (MSRP) | $1,499 | $161 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
Core 2 Extreme QX9775 and Pentium 3805U 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) | 2 (Dual-core) |
| Threads | 4 | 2 |
| Base clock speed | 3.2 GHz | 1.9 GHz |
| Boost clock speed | 3.2 GHz | 1.9 GHz |
| Bus rate | 1600 MHz | 5 GT/s |
| L1 cache | 64 KB (per core) | 64K (per core) |
| L2 cache | 6 MB (per die) | 256K (per core) |
| L3 cache | 0 KB | 2 MB (shared) |
| Chip lithography | 45 nm | 14 nm |
| Die size | 2x 107 mm2 | 82 mm2 |
| Maximum core temperature | no data | 105 °C |
| Maximum case temperature (TCase) | 63 °C | 105 °C |
| Number of transistors | 820 million | 1300 Million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | + | - |
| VID voltage range | 0.85V-1.35V | no data |
Compatibility
Information on Core 2 Extreme QX9775 and Pentium 3805U 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 | 2 | 1 |
| Socket | LGA771 | FCBGA1168 |
| Power consumption (TDP) | 150 Watt | 15 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core 2 Extreme QX9775 and Pentium 3805U. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE4.1, Intel® SSE4.2 |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | - | - |
| Hyper-Threading Technology | - | - |
| Idle States | + | + |
| Thermal Monitoring | + | + |
| Flex Memory Access | no data | + |
| Smart Response | no data | - |
| Demand Based Switching | - | no data |
| FDI | no data | + |
| Fast Memory Access | no data | + |
| FSB parity | - | no data |
Security technologies
Core 2 Extreme QX9775 and Pentium 3805U technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | - |
| EDB | + | + |
| Identity Protection | - | + |
| OS Guard | no data | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Core 2 Extreme QX9775 and Pentium 3805U 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 QX9775 and Pentium 3805U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR2 | DDR3 |
| Maximum memory size | no data | 16 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | no data | 25.6 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | Intel HD Graphics for 5th Generation Intel Processors |
| Quick Sync Video | - | + |
| Clear Video | no data | + |
| Graphics max frequency | no data | 800 MHz |
| InTru 3D | no data | + |
Graphics interfaces
Available interfaces and connections of Core 2 Extreme QX9775 and Pentium 3805U integrated GPUs.
| Number of displays supported | no data | 3 |
| eDP | no data | + |
| DisplayPort | - | + |
| HDMI | - | + |
Graphics API support
APIs supported by Core 2 Extreme QX9775 and Pentium 3805U integrated GPUs, sometimes API versions are included.
| DirectX | no data | 11.2/12 |
Peripherals
Specifications and connection of peripherals supported by Core 2 Extreme QX9775 and Pentium 3805U.
| PCIe version | 1.0 | 2.0 |
| PCI Express lanes | no data | 12 |
Pros & cons summary
| Recency | 24 March 2008 | 1 March 2015 |
| Physical cores | 4 | 2 |
| Threads | 4 | 2 |
| Chip lithography | 45 nm | 14 nm |
| Power consumption (TDP) | 150 Watt | 15 Watt |
Core 2 Extreme QX9775 has 100% more physical cores and 100% more threads.
Pentium 3805U, on the other hand, has an age advantage of 6 years, a 221.4% more advanced lithography process, and 900% lower power consumption.
We couldn't decide between Intel Core 2 Extreme QX9775 and Intel Pentium 3805U. We've got no test results to judge.
Note that Core 2 Extreme QX9775 is a desktop processor while Pentium 3805U is a notebook one.
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