Phenom II X4 840 vs Xeon X5450
Aggregate performance score
Phenom II X4 840 outperforms Xeon X5450 by a minimal 1% based on our aggregate benchmark results.
Primary details
Comparing Xeon X5450 and Phenom II X4 840 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 2032 | 2026 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.32 | 3.08 |
| Market segment | Server | Desktop processor |
| Architecture codename | no data | Propus (2009−2011) |
| Release date | 1 October 2007 (16 years ago) | 4 January 2011 (13 years ago) |
| Launch price (MSRP) | no data | $90 |
| Current price | $72 | $38 (0.4x MSRP) |
Cost-effectiveness evaluation
Performance per price, higher is better.
Phenom II X4 840 has 863% better value for money than Xeon X5450.
Detailed specifications
Xeon X5450 and Phenom II X4 840 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 | no data | 4 (Quad-Core) |
| Threads | no data | 4 |
| Base clock speed | 3 GHz | 3.2 GHz |
| Boost clock speed | no data | 3.2 GHz |
| L1 cache | no data | 128 KB (per core) |
| L2 cache | no data | 512 KB (per core) |
| L3 cache | 12 MB L2 Cache | 0 KB |
| Chip lithography | 45 nm | 45 nm |
| Die size | no data | 169 mm2 |
| Maximum core temperature | 63 °C | no data |
| Number of transistors | no data | 300 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | No | No |
| VID voltage range | 0.85V-1.35V | no data |
Compatibility
Information on Xeon X5450 and Phenom II X4 840 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 | LGA771 | AM3 |
| Power consumption (TDP) | 120 Watt | 95 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon X5450 and Phenom II X4 840. 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 | + | no data |
| Demand Based Switching | + | no data |
| FSB parity | + | no data |
| Status | Discontinued | no data |
Security technologies
Xeon X5450 and Phenom II X4 840 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 Xeon X5450 and Phenom II X4 840 are enumerated here.
| VT-x | + | no data |
| EPT | - | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon X5450 and Phenom II X4 840. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR3 |
Peripherals
Specifications and connection of peripherals supported by Xeon X5450 and Phenom II X4 840.
| PCIe version | no data | 2.0 |
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.
Phenom II X4 840 outperforms Xeon X5450 by 1% 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%
Phenom II X4 840 outperforms Xeon X5450 by 1% in Passmark.
GeekBench 5 Single-Core
GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.
Benchmark coverage: 42%
Xeon X5450 outperforms Phenom II X4 840 by 18% in GeekBench 5 Single-Core.
GeekBench 5 Multi-Core
GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.
Benchmark coverage: 42%
Xeon X5450 outperforms Phenom II X4 840 by 23% in GeekBench 5 Multi-Core.
Pros & cons summary
| Performance score | 1.54 | 1.55 |
| Recency | 1 October 2007 | 4 January 2011 |
| Power consumption (TDP) | 120 Watt | 95 Watt |
Given the minimal performance differences, no clear winner can be declared between Xeon X5450 and Phenom II X4 840.
Be aware that Xeon X5450 is a server/workstation processor while Phenom II X4 840 is a desktop one.
Should you still have questions on choice between Xeon X5450 and Phenom II X4 840, 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.
