Over time CPU manufacturers like Intel and AMD release numerous processors and it is very likely to lose track of all the models out there. Furthermore it is difficult to find complete comparison tables where you find all CPUs and their features listed. Following you find such a list regarding Intel's LGA 2011 processors: SB-E, SB-EP, IB-E, IB-EP and Haswell-E.
Intel Sandy Bridge-E - Desktop Processor
All models support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), TXT, Intel VT-x, Intel VT-d, Turbo Boost, AES-NI, Smart Cache, Hyper-threading, except the C1 stepping models, which lack VT-d.
Model |
C/T |
CPU Clock |
Unlocked |
L2 Cache |
L3 Cache |
TDP
(W) |
Geizhals |
Standard |
Turbo |
i7-3970X
|
6/12
|
3.5 GHz |
4.0 GHz |
Unlocked |
6 x 256KB |
15 MB |
150 |
|
i7-3960X |
6/12 |
3.3 GHz |
3.9 GHz
|
Unlocked |
6 x 256KB |
15 MB |
130 |
|
i7-3930K |
6/12 |
3.2 GHz |
3.8 GHz
|
Unlocked |
6 x 256KB |
12 MB
|
130 |
|
i7-3820 |
4/8 |
3.6 GHz |
3.8 GHz |
Partially
unlockedº |
4 x 256KB |
10 MB
|
130
|
|
The X79 chipset allows increasing the base clock (bclk). Other than that
there are different CPU straps: 1.00x, 1.25x, 1.66x or 2.50x.