Xeon E7340 vs Core 2 Quad Q8400
Aggregate performance score
Xeon E7340 outperforms Core 2 Quad Q8400 by a whopping 215% based on our aggregate benchmark results.
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2492 | 1580 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Server |
| Power efficiency | 0.52 | 1.97 |
| Designer | Intel | Intel |
| Manufacturer | Intel | no data |
| Architecture codename | Yorkfield (2007−2009) | no data |
| Release date | 19 April 2009 (16 years ago) | 1 July 2007 (18 years ago) |
Detailed specifications
Core 2 Quad Q8400 and Xeon E7340 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) | no data |
| Threads | 4 | no data |
| Base clock speed | 2.66 GHz | 2.4 GHz |
| Boost clock speed | 0.67 GHz | no data |
| Bus rate | 1333 MHz | no data |
| L1 cache | 64 KB (per core) | no data |
| L2 cache | 4 MB (shared) | no data |
| L3 cache | 0 KB | 8 MB L2 Cache |
| Chip lithography | 45 nm | 65 nm |
| Die size | 2x 82 mm2 | no data |
| Maximum core temperature | no data | 66 °C |
| Maximum case temperature (TCase) | 71 °C | no data |
| Number of transistors | 456 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| VID voltage range | 0.85V-1.3625V | 1.0V-1.5V |
Compatibility
Information on Core 2 Quad Q8400 and Xeon E7340 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 | no data |
| Socket | FCLGA775,LGA775 | PGA604,PPGA604 |
| Power consumption (TDP) | 95 Watt | 80 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core 2 Quad Q8400 and Xeon E7340. You'll probably need this information if you require some particular technology.
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | - | - |
| Hyper-Threading Technology | - | - |
| Idle States | + | + |
| Thermal Monitoring | + | + |
| Demand Based Switching | - | + |
| FSB parity | - | + |
Security technologies
Core 2 Quad Q8400 and Xeon E7340 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | - |
| EDB | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core 2 Quad Q8400 and Xeon E7340 are enumerated here.
| VT-x | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q8400 and Xeon E7340. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, DDR3 | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | On certain motherboards (Chipset feature) | no data |
Peripherals
Specifications and connection of peripherals supported by Core 2 Quad Q8400 and Xeon E7340.
| PCIe version | 2.0 | 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.
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. Other than that, Passmark measures multi-core performance.
Pros & cons summary
| Performance score | 1.18 | 3.72 |
| Recency | 19 April 2009 | 1 July 2007 |
| Chip lithography | 45 nm | 65 nm |
| Power consumption (TDP) | 95 Watt | 80 Watt |
Core 2 Quad Q8400 has an age advantage of 1 year, and a 44.4% more advanced lithography process.
Xeon E7340, on the other hand, has a 215.3% higher aggregate performance score, and 18.8% lower power consumption.
The Intel Xeon E7340 is our recommended choice as it beats the Intel Core 2 Quad Q8400 in performance tests.
Note that Core 2 Quad Q8400 is a desktop processor while Xeon E7340 is a server/workstation one.
Other comparisons
We've compiled a selection of CPU comparisons, ranging from closely matched processors to other comparisons that may be of interest.
