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Old January 7, 2011, 08:24 PM
windwithme windwithme is offline
Join Date: Jul 2009
Posts: 580

Default performance:
CPU 100.1 X 35 => 3502.7MHz (Turbo Boost enabled, C1E disabled)
DDR3 2135.2 CL7 10-7-27 1T 1.650V

The architecture of Sandy Bridge CPU is different from that of previous Core i7. The bus speed is changed to 100MHz.
And about other frequency information, the highest ratio of 1366 CPU is 133/1866, 1156 CPU is 133/1600.
Now the default frequency of 1155 CPU can achieve 100/2133, making DDR3 clock show better performance.

Hyper PI 32M X8=> 14m 57.750s
CPUMARK 99=> 540

Nuclearus Multi Core => 22513
Fritz Chess Benchmark => 27.58/13236

CrystalMark 2004R3 => 332817

CPU => 6.83 pts
CPU(Single Core) => 1.43 pts

PCMark Vantage => 19941

3DMark Vantage
CPU SCORE => 53268

The default clock of 2006K is 3.4GHz. After Turbo Boost 2.0 is enabled, the clock can achieve 3.5~3.8GHz by CPU usage.
Hence, the test figures above are great, so the result means CPU can easily deal with many tasks under any circumstances.
And as to CPU performance under the same clock, I find that LGA 1155 is about 10% higher than LGA 1156.
As to DDR3 bandwidth, probably with more advanced Memory Controller technology, I find there is 20~30% performance improvement in much software.
Therefore, about basic performance and DDR3 bandwidth, Intel Sandy Bridge CPU with latest architecture has made great progress.

System standby: 33℃~37℃
[IMG] in full usage: 44℃~47℃
Intel Burn Test v2.4,Stress Level Maximum

Hence about the temperature of 2600K:
Standby: about 3℃~5℃lower than the temperature of 1156 45nm CPU.
Full usage: about 10℃lower than the temperature of 1156 45nm CPU.
It goes without saying that as to testing temperature, different motherboards display divergent results.
But through the comparing, we can observe the temperature difference between 32nm and 45nm of 4C8T.

Power consumption:
Standby: 84W

CPU full speed: 125W

As to power consumption, with 32nm manufacturing process technology, the power saving of this CPU is 30~50W more than that of 45nm Core i7.
So obviously Sandy Bridge CPU can save more energy, and this is also one of the reasons why consumers may prefer quad-core platform.
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