Core 2 Duo E6550 vs Pentium Extreme Edition 965
Aggregate performance score
Pentium Extreme Edition 965 outperforms Core 2 Duo E6550 by a moderate 12% based on our aggregate benchmark results.
Primary details
Comparing Pentium Extreme Edition 965 and Core 2 Duo E6550 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2749 | 2793 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Desktop processor |
| Power efficiency | 0.46 | 0.81 |
| Architecture codename | Presler (2005−2007) | Conroe (2006−2007) |
| Release date | 26 March 2006 (18 years ago) | July 2007 (17 years ago) |
| Launch price (MSRP) | $999 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Pentium Extreme Edition 965 and Core 2 Duo E6550 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) | 2 (Dual-core) |
| Threads | 4 | 2 |
| Base clock speed | 3.733 GHz | 2.33 GHz |
| Boost clock speed | 0.73 GHz | 2.33 GHz |
| Bus rate | no data | 1333 MHz |
| L1 cache | 16 KB (per core) | 64 KB |
| L2 cache | 2 MB (per core) | 4 MB |
| L3 cache | no data | 0 KB |
| Chip lithography | 65 nm | 65 nm |
| Die size | 2x 81 mm2 | 143 mm2 |
| Maximum core temperature | no data | 72 °C |
| Maximum case temperature (TCase) | 67 °C | no data |
| Number of transistors | 376 million | 291 million |
| 64 bit support | + | + |
| Windows 11 compatibility | no data | - |
| Unlocked multiplier | + | - |
| VID voltage range | no data | 0.85V-1.5V |
Compatibility
Information on Pentium Extreme Edition 965 and Core 2 Duo E6550 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 |
| Socket | 775 | PLGA775 |
| Power consumption (TDP) | 130 Watt | 65 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Pentium Extreme Edition 965 and Core 2 Duo E6550. You'll probably need this information if you require some particular technology.
| Enhanced SpeedStep (EIST) | no data | + |
| Turbo Boost Technology | no data | - |
| Hyper-Threading Technology | no data | - |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| Demand Based Switching | no data | - |
| FSB parity | no data | - |
| Status | no data | Discontinued |
Security technologies
Pentium Extreme Edition 965 and Core 2 Duo E6550 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
| EDB | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Pentium Extreme Edition 965 and Core 2 Duo E6550 are enumerated here.
| VT-x | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Pentium Extreme Edition 965 and Core 2 Duo E6550. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, DDR3 Depends on motherboard | DDR1, DDR2, DDR3 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | On certain motherboards (Chipset feature) | no data |
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 | 0.65 | 0.58 |
| Threads | 4 | 2 |
| Power consumption (TDP) | 130 Watt | 65 Watt |
Pentium Extreme Edition 965 has a 12.1% higher aggregate performance score, and 100% more threads.
Core 2 Duo E6550, on the other hand, has 100% lower power consumption.
The Pentium Extreme Edition 965 is our recommended choice as it beats the Core 2 Duo E6550 in performance tests.
Should you still have questions on choice between Pentium Extreme Edition 965 and Core 2 Duo E6550, ask them in Comments section, and we shall answer.
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