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| Intel Core i7 6700K vs 3960X |
Released July, 2015
Intel Core i7 6700K
- 4 GHz
- Quad core
- Unlocked
Reasons to buy the Intel Core i7 6700K
![]() | Much better 3DMark06 CPU score 80.5 | ![]() | Much lower typical power consumption 73.94W |
![]() | Higher clock speed 4 GHz | ![]() | Much newer manufacturing process 14 nm |
VS
Released November, 2011
Intel Core i7 3960X
- 3.3 GHz
- Hexa core
- Unlocked
Reasons to buy the 3960X
![]() | Significantly more l2 cache 2 MB | ![]() | More l3 cache 15 MB |
![]() | More cores 6 | ![]() | More threads 12 |
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VS
Differences What are the advantages of each
| |||||||
Much better 3DMark06 CPU score | 80.5 | vs | 75.9 | More than 5% better 3DMark06 CPU score | |||
---|---|---|---|---|---|---|---|
Much lower typical power consumption | 73.94W | vs | 176.72W | 2.4x lower typical power consumption | |||
Higher clock speed | 4 GHz | vs | 3.3 GHz | More than 20% higher clock speed | |||
Much newer manufacturing process | 14 nm | vs | 32 nm | A newer manufacturing process allows for a more powerful, yet cooler running processor | |||
Has a built-in GPU | Yes | vs | No | Somewhat common; A separate graphics adapter is not required | |||
Much better CompuBench 1.5 ocean surface simulation score | 302.88 fps | vs | 63.21 fps | More than 4.8x better CompuBench 1.5 ocean surface simulation score | |||
Higher turbo clock speed | 4.2 GHz | vs | 3.9 GHz | Around 10% higher turbo clock speed | |||
Much lower annual home energy cost | 21.92 $/year | vs | 56.39 $/year | 2.6x lower annual home energy cost | |||
Much lower annual commercial energy cost | 79.72 $/year | vs | 184.84 $/year | 2.3x lower annual commercial energy cost | |||
Newer | Jul, 2015 | vs | Nov, 2011 | Release date over 3 years later | |||
Better PassMark (Single core) score | 2,349 | vs | 2,015 | More than 15% better PassMark (Single core) score | |||
Slightly better overclocked clock speed (Water) | 4.77 GHz | vs | 4.58 GHz | Around 5% better overclocked clock speed (Water) | |||
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Significantly more l2 cache | 2 MB | vs | 1 MB | 2x more l2 cache; more data can be stored in the l2 cache for quick access later | |||
More l3 cache | 15 MB | vs | 8 MB | Around 90% more l3 cache; more data can be stored in the l3 cache for quick access later | |||
More cores | 6 | vs | 4 | 2 more cores; run more applications at once | |||
More threads | 12 | vs | 8 | 4 more threads | |||
More l3 cache per core | 2.5 MB/core | vs | 2 MB/core | 25% more l3 cache per core | |||
Better PassMark score | 12,802 | vs | 11,109 | More than 15% better PassMark score | |||
Better performance per watt | 5.04 pt/W | vs | 3.49 pt/W | Around 45% better performance per watt | |||
Better performance per dollar | 1 pt/$ | vs | 0.91 pt/$ | More than 10% better performance per dollar | |||
More l2 cache per core | 0.33 MB/core | vs | 0.25 MB/core | Around 35% more l2 cache per core |
Benchmarks Real world tests of Core i7 6700K vs 3960X
CompuBench 1.5 (Ocean surface simulation) Data courtesy CompuBench
Core i7 6700K
302.88 fps
Core i7 3960X
63.21 fps
GeekBench 3 (Multi-core) Data courtesy Primate Labs
Core i7 6700K
17,583
Core i7 3960X
18,528
GeekBench 3 (Single core) Data courtesy Primate Labs
Core i7 6700K
4,510
Core i7 3960X
3,267
GeekBench 3 (AES single core) Data courtesy Primate Labs
Core i7 6700K
6,010 MB/s
Core i7 3960X
2,595,000 MB/s
GeekBench (32-bit) Data courtesy Primate Labs
Core i7 6700K
17,169
Core i7 3960X
19,457
GeekBench
Core i7 6700K
17,169
Core i7 3960X
23,155
PassMark Data courtesy Passmark
Core i7 6700K
11,109
Core i7 3960X
12,802
PassMark (Single Core)
Core i7 6700K
2,349
Core i7 3960X
2,015
Specifications Full list of technical specs
summary | Core i7 6700K | vs | 3960X |
---|---|---|---|
Clock speed | 4 GHz | 3.3 GHz | |
Turbo clock speed | 4.2 GHz | 3.9 GHz | |
Cores | Quad core | Hexa core | |
Is unlocked | Yes | Yes | |
features | |||
Has a NX bit | Yes | Yes | |
Supports trusted computing | No | No | |
Has virtualization support | Yes | Yes | |
Instruction set extensions | |||
SSE2 | |||
MMX | |||
SSE4 | |||
AVX | |||
SSE3 | |||
SSE | |||
SSE4.1 | |||
SSE4.2 | |||
Supplemental SSE3 | |||
AES | |||
AVX 2.0 | |||
Supports dynamic frequency scaling | Yes | Yes | |
power consumption | |||
TDP | 91W | 130W | |
Annual home energy cost | 21.92 $/year | 56.39 $/year | |
Annual commercial energy cost | 79.72 $/year | 184.84 $/year | |
Performance per watt | 3.49 pt/W | 5.04 pt/W | |
Typical power consumption | 73.94W | 176.72W | |
bus | |||
Architecture | FSB | DMI 2.0 | |
Number of links | 0 | 1 | |
Transfer rate | 8,000 MT/s | 5,000 MT/s |
details | Core i7 6700K | vs | 3960X |
---|---|---|---|
Architecture | x86-64 | x86-64 | |
Threads | 8 | 12 | |
L2 cache | 1 MB | 2 MB | |
L2 cache per core | 0.25 MB/core | 0.33 MB/core | |
L3 cache | 8 MB | 15 MB | |
L3 cache per core | 2 MB/core | 2.5 MB/core | |
Manufacture process | 14 nm | 32 nm | |
Max CPUs | 1 | 1 | |
Operating temperature | Unknown - 64°C | Unknown - 66.8°C | |
overclocking | |||
Overclocked clock speed | 4.61 GHz | 4.76 GHz | |
Overclocked clock speed (Water) | 4.77 GHz | 4.58 GHz | |
Overclocked clock speed (Air) | 4.61 GHz | 4.76 GHz | |
integrated graphics | |||
GPU | GPU | None | |
Label | Intel® HD Graphics 530 | N/A | |
Number of displays supported | 3 | N/A | |
GPU clock speed | 350 MHz | N/A | |
Turbo clock speed | 1,150 MHz | N/A | |
memory controller | |||
Memory controller | Built-in | Built-in | |
Memory type | |||
DDR3-1600 | |||
DDR3L-1600 | |||
DDR3-1333 | |||
DDR3-1066 | |||
DDR3 | |||
Channels | Dual Channel | Quad Channel | |
Supports ECC | No | No | |
Maximum bandwidth | 25,600 MB/s | 51,200 MB/s | |
Maximum memory size | 65,536 MB | 65,536 MB |
Intel Core i7 6700K ![]() | Intel Core i7 3960X ![]() |
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