Celeron 420 vs Atom Z500
Aggregate performance score
Atom Z500 outperforms Celeron 420 by a small 8% 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 | 3541 | 3570 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Desktop processor |
| Series | Intel Atom | no data |
| Power efficiency | 9.10 | 0.16 |
| Designer | Intel | Intel |
| Manufacturer | no data | Intel |
| Architecture codename | Silverthorne (2008−2010) | Conroe-L (2007−2008) |
| Release date | 2 April 2008 (17 years ago) | 3 June 2007 (18 years ago) |
| Launch price (MSRP) | $45 | $23 |
Detailed specifications
Atom Z500 and Celeron 420 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 | 1 (Single-Core) | 1 (Single-Core) |
| Threads | 1 | 1 |
| Base clock speed | no data | 1.6 GHz |
| Boost clock speed | 0.8 GHz | 1.6 GHz |
| Bus type | FSB | no data |
| Bus rate | 400 MT/s | no data |
| Multiplier | 8 | no data |
| L1 cache | 56 KB | 64 KB (per core) |
| L2 cache | 512 KB | 512 KB (shared) |
| L3 cache | 0 KB | 0 KB |
| Chip lithography | 45 nm | 65 nm |
| Die size | 24.18 mm2 | 77 mm2 |
| Maximum core temperature | 90 °C | no data |
| Maximum case temperature (TCase) | no data | 60 °C |
| Number of transistors | 47 Million | 105 million |
| 64 bit support | - | + |
| Windows 11 compatibility | - | - |
| VID voltage range | 0.80 -1.1V | 1V-1.3375V |
Compatibility
Information on Atom Z500 and Celeron 420 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 (Uniprocessor) | 1 |
| Socket | PBGA441 | LGA775 |
| Power consumption (TDP) | 0.65 Watt | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Atom Z500 and Celeron 420. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE2, Intel® SSE3, Intel® SSSE3 | no data |
| Enhanced SpeedStep (EIST) | + | - |
| Turbo Boost Technology | - | - |
| Hyper-Threading Technology | + | - |
| Idle States | + | + |
| Thermal Monitoring | + | + |
| Demand Based Switching | + | - |
| FSB parity | - | - |
Security technologies
Atom Z500 and Celeron 420 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | - |
| EDB | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Atom Z500 and Celeron 420 are enumerated here.
| VT-d | - | - |
| VT-x | - | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Atom Z500 and Celeron 420. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR1, DDR2, DDR3 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | - | On certain motherboards (Chipset feature) |
Peripherals
Specifications and connection of peripherals supported by Atom Z500 and Celeron 420.
| PCIe version | no data | 2.0 |
Pros & cons summary
| Performance score | 0.14 | 0.13 |
| Recency | 2 April 2008 | 3 June 2007 |
| Chip lithography | 45 nm | 65 nm |
Atom Z500 has a 7.7% higher aggregate performance score, an age advantage of 9 months, and a 44.4% more advanced lithography process.
Given the minimal performance differences, no clear winner can be declared between Intel Atom Z500 and Intel Celeron 420.
Be aware that Atom Z500 is a notebook processor while Celeron 420 is a desktop one.
Other comparisons
We've compiled a selection of CPU comparisons, ranging from closely matched processors to other comparisons that may be of interest.
