Intel Core i7 4790K vs Celeron 797 |
Released April, 2014
Intel Core i7 4790K
- 4 GHz
- Quad core
- Unlocked
Reasons to buy the Intel Core i7 4790K
 | Much higher clock speed 4 GHz | | Significantly more l2 cache 1 MB |
| | Significantly newer manufacturing process 22 nm | | More l3 cache 8 MB |
VS
Released January, 2012
Intel Celeron 797
- 1.4 GHz
- Single core
Reasons to buy the Celeron 797
| | Much lower typical power consumption 13.81W | | Much higher Maximum operating temperature 100 °C |
| | Much lower annual home energy cost 4.1 $/year | | Much lower annual commercial energy cost 14.89 $/year |
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Differences What are the advantages of each
| |||||||
| Much higher clock speed | 4 GHz | vs | 1.4 GHz | More than 2.8x higher clock speed | |||
|---|---|---|---|---|---|---|---|
| Significantly more l2 cache | 1 MB | vs | 0.25 MB | 4x more l2 cache; more data can be stored in the l2 cache for quick access later | |||
| Significantly newer manufacturing process | 22 nm | vs | 32 nm | A newer manufacturing process allows for a more powerful, yet cooler running processor | |||
| More l3 cache | 8 MB | vs | 1.5 MB | More than 5.2x more l3 cache; more data can be stored in the l3 cache for quick access later | |||
| Much better turbo clock speed | 1,250 MHz | vs | 950 MHz | More than 30% better turbo clock speed | |||
| Much better overclocked clock speed (Air) | 4.63 GHz | vs | 1.4 GHz | More than 3.2x better overclocked clock speed (Air) | |||
| More threads | 8 | vs | 1 | 7 more threads | |||
| More cores | 4 | vs | 1 | 3 more cores; run more applications at once | |||
| More number of displays supported | 3 | vs | 2 | 1 more number of displays supported | |||
| Much better overclocked clock speed (Water) | 4.8 GHz | vs | 1.4 GHz | Around 3.5x better overclocked clock speed (Water) | |||
| More l3 cache per core | 2 MB/core | vs | 1.5 MB/core | Around 35% more l3 cache per core | |||
| Newer | Apr, 2014 | vs | Jan, 2012 | Release date over 2 years later | |||
| |||||||
| Much lower typical power consumption | 13.81W | vs | 71.5W | 5.2x lower typical power consumption | |||
| Much higher Maximum operating temperature | 100 °C | vs | 74.04 °C | More than 35% higher Maximum operating temperature | |||
| Much lower annual home energy cost | 4.1 $/year | vs | 21.2 $/year | 5.2x lower annual home energy cost | |||
| Much lower annual commercial energy cost | 14.89 $/year | vs | 77.09 $/year | 5.2x lower annual commercial energy cost | |||
Report a correction
Features Key features of the Core i7 4790K vs Celeron 797
clock speed
L2 cache
L3 cache
gpu clock speed
overclocked clock speed (air)
overclocked clock speed (water)
Specifications Full list of technical specs
summary | Core i7 4790K | vs | Celeron 797 |
|---|---|---|---|
| Clock speed | 4 GHz | 1.4 GHz | |
| Cores | Quad core | Single core | |
features | |||
| Has a NX bit | Yes | Yes | |
| Supports trusted computing | No | No | |
| Has virtualization support | Yes | Yes | |
| Instruction set extensions | |||
| SSE2 | |||
| F16C | |||
| MMX | |||
| SSE4 | |||
| AVX | |||
| SSE3 | |||
| EM64T | |||
| SSE | |||
| SSE4.1 | |||
| FMA3 | |||
| SSE4.2 | |||
| Supplemental SSE3 | |||
| AES | |||
| AVX 2.0 | |||
| Supports dynamic frequency scaling | Yes | Yes | |
power consumption | |||
| TDP | 88W | 17W | |
| Annual home energy cost | 21.2 $/year | 4.1 $/year | |
| Annual commercial energy cost | 77.09 $/year | 14.89 $/year | |
| Typical power consumption | 71.5W | 13.81W | |
bus | |||
| Architecture | DMI 2.0 | DMI | |
| Number of links | 0 | 1 | |
| Transfer rate | 5,000 MT/s | 5,000 MT/s | |
details | Core i7 4790K | vs | Celeron 797 |
|---|---|---|---|
| Architecture | x86-64 | x86-64 | |
| Threads | 8 | 1 | |
| L2 cache | 1 MB | 0.25 MB | |
| L2 cache per core | 0.25 MB/core | 0.25 MB/core | |
| L3 cache | 8 MB | 1.5 MB | |
| L3 cache per core | 2 MB/core | 1.5 MB/core | |
| Manufacture process | 22 nm | 32 nm | |
| Max CPUs | 1 | 1 | |
| Operating temperature | Unknown - 74.04°C | Unknown - 100°C | |
overclocking | |||
| Overclocked clock speed | 4.63 GHz | 1.4 GHz | |
| Overclocked clock speed (Water) | 4.8 GHz | 1.4 GHz | |
| Overclocked clock speed (Air) | 4.63 GHz | 1.4 GHz | |
integrated graphics | |||
| GPU | GPU | GPU | |
| Label | Intel® HD Graphics 4600 | Intel® HD Graphics | |
| Number of displays supported | 3 | 2 | |
| GPU clock speed | 350 MHz | 350 MHz | |
| Turbo clock speed | 1,250 MHz | 950 MHz | |
memory controller | |||
| Memory controller | Built-in | Built-in | |
| Memory type | |||
| DDR3-1600 | |||
| DDR3L-1600 | |||
| DDR3-1333 | |||
| DDR3-1066 | |||
| DDR3 | |||
| Channels | Dual Channel | Dual Channel | |
| Supports ECC | No | No | |
| Maximum bandwidth | 25,600 MB/s | 21,333.32 MB/s | |
| Maximum memory size | 32,768 MB | 16,384 MB | |
 Intel Core i7 4790K  Report a correction |  Intel Celeron 797 Report a correction |
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