Intel Core i7 875 K Performance and Overclocking
Published by Marc Büchel on 12.08.10Leistungsaufnahme
Hereby we take the power consumption under load as well as idle. To generate a load situation we use SiSoft Sandra's Burn-In Module and measure the whole systems power consumption. The values we take when the System just booted into Windows and the load drops.
| Idle | Performance | Percent |
| Intel Core i5 750 2.66 GHz DDR3-1333 | 81 Watt | 62.31 % |
| Intel Core i7 875 K 2.93 GHz DDR3-1600 | 85 Watt | 65.38 % |
| Intel Core i7 870 2.93 GHz DDR3-1333 | 86 Watt | 66.15 % |
| AMD Phenom II X6 1090T 3.2 GHz DDR3-1333 | 91 Watt | 70.00 % |
| AMD Phenom II X4 955 3.2 GHz DDR3-1333 | 106 Watt | 81.54 % |
| Intel Core i7 980 X 3.33 GHZ DDR3-1600 | 126 Watt | 96.92 % |
| Intel Core i7 920 2.66 GHZ DDR3-1600 | 130 Watt | 100.00 % |
| Intel Core i7 940 2.93 GHz DDR3-1600 | 132 Watt | 101.53 % |
| Intel Core i7 950 3.06 GHz DDR3-1600 | 134 Watt | 103.08 % |
| Intel Core i7 965 XE 3.2 GHz DDR3-1600 | 136 Watt | 104.62 % |
| Intel Core i7 975 XE 3.33 GHZ DDR3-1600 | 140 Watt | 107.69 % |
| Load | Performance | Percent |
| Intel Core i5 750 2.66 GHz DDR3-1333 | 150 Watt | 74.63 % |
| Intel Core i7 870 2.93 GHz DDR3-1333 | 155 Watt | 77.11 % |
| AMD Phenom II X4 955 3.2 GHz DDR3-1333 | 179 Watt | 89.05 % |
| Intel Core i7 875 K 2.93 GHz DDR3-1600 | 196 Watt | 97.51 % |
| AMD Phenom II X6 1090T 3.2 GHz DDR3-1333 | 198 Watt | 98.51 % |
| Intel Core i7 920 2.66 GHZ DDR3-1600 | 201 Watt | 100.00 % |
| Intel Core i7 940 2.93 GHz DDR3-1600 | 206 Watt | 102.49 % |
| Intel Core i7 950 3.06 GHz DDR3-1600 | 211 Watt | 104.98 % |
| Intel Core i7 965 XE 3.2 GHz DDR3-1600 | 216 Watt | 107.46 % |
| Intel Core i7 975 XE 3.33 GHZ DDR3-1600 | 220 Watt | 109.45 % |
| Intel Core i7 980 X 3.33 GHZ DDR3-1600 | 248 Watt | 123.38 % |
Overclocking
Using a very powerful Noctua NH-D14 aircooler we were able to reach 4.214 GHz at 1.44 Volt with the sample Intel provided us with. At this clock speed it's been still possible to run Futuremark Vantage stable. Therefore this is not a "suicidal-CPU-z"-Screenshot which would've provided you with the highest clockspeed possible before the system goes down with a bluescreen.
If we take a closer look at the 3DMark Vantage results we see that 13'787 point is 531 points more or in other words 4 percent. Comparing the CPU score values shows that 24'488 point is 4'567 point more than with the standard clock speed. This is equal to an increase of 22.9 percent.
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