After the recent AMD Phenom II X4 955 has introduced the new flagship model, now Intel has again a slightly higher clocked with 3.33 GHz processor model on the market. Without doubt, the Core i7 are the fastest x86 CPUs for end users and those previously existing models of three series has grown.
The changes to the Core i7 965 is minimal, the QPI link is also overclocked to 6.4 GHz, and the cache remains the same, the biggest change is to increase the clock speed to 133 MHz to 3.33 GHz moreover, now the extreme model in D0 Stepping is delivered.
Unfortunately we could only reach 4 GHz and higher clock speeds were not possible with our air coolers, there were also 4.4 Ghz, this was also stable clock speed, at least if we are to believe Linpack, unfortunately, the CPU temperature rose very rapidly above 95 ° C, which was not tenable. Due to lack of time we could not test it with the help of the cooling water, but we will do so once again we have the CPU, the clock speed of 4 GHz were achieved with a BCLK of 167 MHz and a multiplier of 24 The Vcore was fixed at 1.27 volts, all power saving features were turned off, the memory was still at 1333 MHz.
Since it is not promptly potential to measure the power consumption of individual tools immediately, we have conceived the power consumption of the all system, the efficiency of the power supply also plays a role.
In the Core i7 processors are idle again at the top, which is not really positive, the Phenom II X4 955 cuts here, did much better than the Core i7 975th But even under load and in the 3DMark score shows the i7 975 is not just economically.
Undoubtedly, the Intel Core i7 975 processor, the fastest, the end user can buy, only in games he loses his big head start, but is still one of the first places, on the other hand, the high price is for this Extreme Edition, which offers few advantages with normal air cooling for the user. For even the Core i7 920 D0 Stepping now available and in the 4 GHz mark often achieved, the sheer computing power is still enormous and impressed again and again, nevertheless, these Core i7 Extreme CPU in a few households will be found, for adequate performance also offer smaller and much cheaper processors such as AMD showed the Phenom II X4 955 th .