Celeron B815 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 | 3245 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Laptop |
| Series | no data | Intel Celeron |
| Power efficiency | no data | 0.52 |
| Designer | Intel | Intel |
| Manufacturer | Intel | Intel |
| Architecture codename | Yorkfield (2007−2009) | Sandy Bridge (2011−2013) |
| Release date | 24 March 2008 (18 years ago) | 1 January 2012 (14 years ago) |
| Launch price (MSRP) | $1,499 | $86 |
Detailed specifications
Basic parameters of Core 2 Extreme QX9775 and Celeron B815: 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 | 1.6 GHz |
| Boost clock speed | 3.2 GHz | 1.6 GHz |
| Bus type | no data | DMI 2.0 |
| Bus rate | 1600 MHz | 4 × 5 GT/s |
| Multiplier | no data | 16 |
| 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 | 32 nm |
| Die size | 2x 107 mm2 | 131 mm2 |
| Maximum core temperature | no data | 100 °C |
| Maximum case temperature (TCase) | 63 °C | no data |
| Number of transistors | 820 million | 504 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 Celeron B815 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 (Uniprocessor) |
| Socket | LGA771 | FCPGA988,PGA988 |
| Power consumption (TDP) | 150 Watt | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core 2 Extreme QX9775 and Celeron B815. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE4.1, Intel® SSE4.2 |
| FMA | - | + |
| Enhanced SpeedStep (EIST) | + | + |
| My WiFi | no data | - |
| Turbo Boost Technology | - | - |
| Hyper-Threading Technology | - | - |
| Idle States | + | + |
| Thermal Monitoring | + | + |
| Flex Memory Access | no data | + |
| Demand Based Switching | - | - |
| FDI | no data | + |
| Fast Memory Access | no data | + |
| FSB parity | - | no data |
Security technologies
Core 2 Extreme QX9775 and Celeron B815 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | - |
| EDB | + | + |
| Anti-Theft | no data | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Core 2 Extreme QX9775 and Celeron B815 are enumerated here.
| VT-d | no data | - |
| VT-x | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core 2 Extreme QX9775 and Celeron B815. 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 | 21.335 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | Intel HD Graphics for 2nd Generation Intel Processors |
| Graphics max frequency | no data | 1.05 GHz |
Graphics interfaces
Available interfaces and connections of Core 2 Extreme QX9775 and Celeron B815 integrated GPUs.
| Number of displays supported | no data | 2 |
| eDP | no data | + |
| DisplayPort | - | + |
| HDMI | - | + |
| SDVO | no data | + |
| CRT | no data | + |
Peripherals
Specifications and connection of peripherals supported by Core 2 Extreme QX9775 and Celeron B815.
| PCIe version | 1.0 | 2.0 |
| PCI Express lanes | no data | 16 |
Pros & cons summary
| Recency | 24 March 2008 | 1 January 2012 |
| Physical cores | 4 | 2 |
| Threads | 4 | 2 |
| Chip lithography | 45 nm | 32 nm |
| Power consumption (TDP) | 150 Watt | 35 Watt |
Core 2 Extreme QX9775 has 100% more physical cores and 100% more threads.
Celeron B815, on the other hand, has an age advantage of 3 years, a 41% more advanced lithography process, and 329% lower power consumption.
We couldn't decide between Intel Core 2 Extreme QX9775 and Intel Celeron B815. We've got no test results to judge.
Note that Core 2 Extreme QX9775 is a desktop processor while Celeron B815 is a notebook one.
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