Core 2 Extreme X7800 vs Xeon E5520
Aggregate performance score
Xeon E5520 outperforms Core 2 Extreme X7800 by a whopping 120% based on our aggregate benchmark results.
Primary details
Comparing Xeon E5520 and Core 2 Extreme X7800 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 1994 | 2579 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 2.58 | no data |
| Market segment | Server | Laptop |
| Series | no data | Intel Core 2 Extreme |
| Architecture codename | Gainestown (2009−2010) | Merom XE (2007) |
| Release date | March 2009 (15 years ago) | 17 July 2007 (16 years ago) |
| Launch price (MSRP) | $19 | $851 |
| Current price | $70 (3.7x MSRP) | $299 (0.4x MSRP) |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Xeon E5520 and Core 2 Extreme X7800 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 | 8 | 2 |
| Base clock speed | 2.26 GHz | 2.6 GHz |
| Boost clock speed | 2.53 GHz | 2.6 GHz |
| Bus support | no data | 800 MHz |
| L1 cache | 64 KB (per core) | 128 KB |
| L2 cache | 256 KB (per core) | 4 MB |
| L3 cache | 8 MB (shared) | 4 MB L2 Cache |
| Chip lithography | 45 nm | 65 nm |
| Die size | 263 mm2 | 143 mm2 |
| Maximum core temperature | 72 °C | 100 °C |
| Number of transistors | 731 million | 291 Million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | No | No |
| VID voltage range | no data | 1.1V-1.375V |
Compatibility
Information on Xeon E5520 and Core 2 Extreme X7800 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 | no data |
| Socket | FCLGA1366 | PPGA478 |
| Power consumption (TDP) | 80 Watt | 44 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon E5520 and Core 2 Extreme X7800. You'll probably need this information if you require some particular technology.
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | 1.0 | - |
| Hyper-Threading Technology | + | - |
| Idle States | + | no data |
| Demand Based Switching | + | - |
| PAE | 40 Bit | no data |
| FSB parity | no data | - |
| Status | Discontinued | Discontinued |
Security technologies
Xeon E5520 and Core 2 Extreme X7800 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | - |
| EDB | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon E5520 and Core 2 Extreme X7800 are enumerated here.
| VT-d | + | no data |
| VT-x | + | + |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon E5520 and Core 2 Extreme X7800. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | no data |
| Maximum memory size | 144 GB | no data |
| Max memory channels | 3 | no data |
| Maximum memory bandwidth | 25.6 GB/s | no data |
| ECC memory support | + | 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.
Xeon E5520 outperforms Core 2 Extreme X7800 by 120% based on our aggregate benchmark results.
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.
Benchmark coverage: 68%
Xeon E5520 outperforms Core 2 Extreme X7800 by 121% in Passmark.
Pros & cons summary
| Performance score | 1.63 | 0.74 |
| Physical cores | 4 | 2 |
| Threads | 8 | 2 |
| Cost | $19 | $851 |
| Chip lithography | 45 nm | 65 nm |
| Power consumption (TDP) | 80 Watt | 44 Watt |
The Xeon E5520 is our recommended choice as it beats the Core 2 Extreme X7800 in performance tests.
Be aware that Xeon E5520 is a server/workstation processor while Core 2 Extreme X7800 is a notebook one.
Should you still have questions on choice between Xeon E5520 and Core 2 Extreme X7800, 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.
