Phenom II X4 945 (125W) vs Core 2 Quad Q9550
Primary details
Comparing Core 2 Quad Q9550 and Phenom II X4 945 (125W) processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 2031 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 2.80 | no data |
| Market segment | Desktop processor | Desktop processor |
| Series | Core 2 Quad (Desktop) | no data |
| Architecture codename | Yorkfield (2007−2009) | Deneb (2009−2011) |
| Release date | no data | April 2009 (15 years ago) |
| Current price | $54 | $60 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Core 2 Quad Q9550 and Phenom II X4 945 (125W) 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 | 4 | 4 |
| Boost clock speed | 2.83 GHz | 3 GHz |
| Bus support | 1333 MHz | no data |
| L1 cache | no data | 128 KB (per core) |
| L2 cache | 12288 KB | 512 KB (per core) |
| L3 cache | no data | 6 MB (shared) |
| Chip lithography | 45 nm | 45 nm |
| Die size | no data | 258 mm2 |
| Number of transistors | no data | 758 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | No | No |
Compatibility
Information on Core 2 Quad Q9550 and Phenom II X4 945 (125W) 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 | LGA775 | AM3 |
| Power consumption (TDP) | 95 Watt | 125 Watt |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q9550 and Phenom II X4 945 (125W). Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1,DDR2,DDR3 | DDR3 |
Pros & cons summary
| Power consumption (TDP) | 95 Watt | 125 Watt |
We couldn't decide between Core 2 Quad Q9550 and Phenom II X4 945 (125W). We've got no test results to judge.
Should you still have questions on choice between Core 2 Quad Q9550 and Phenom II X4 945 (125W), ask them in Comments section, and we shall answer.
Similar processor comparisons
We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.
