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Intel’s Sandy Bridge Revealed: Core i5-2500K & i7-2600K Reviewed
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by Rob Williams on January 3, 2011 in Intel Processors

The long-awaited launch of Intel’s Sandy Bridge is here, and we have all of the details of what to expect, what you need to “upgrade”, what models will be available at launch, and of course, their prices. We’re taking a look at two of the higest-end offerings, the Core i5-2500K and i7-2600K – both quad-cores and both fully unlocked.

Power Consumption

It goes without saying that power efficiency is at the forefront of many consumers’ minds today, and for good reason. Whether you are trying to save money or the environment – or both – it’s good to know just how much effort certain vendors are putting into their products to help them excel in this area. Both AMD and Intel have worked hard to develop efficient chips, and that’s evident with each new launch. The CPUs are getting faster, and use less power, and hopefully things will stay that way.

To help see what kind of wattage a given processor draws on average, we use a Kill-A-Watt that’s plugged into a power bar that’s in turn plugged into one of the wall sockets, with the test system plugged directly into that. The monitor and other components are plugged into the other socket and is not connected to the Kill-A-Watt. For our system specifications, please refer to our methodology page.

To test, the computer is first boot up and left to sit at idle for five minutes, at which point the current wattage is recorded if stable. To test for full CPU load, LinX is run with 2560MB memory usage for a total of five minutes. During that run, the highest point the wattage reaches on the meter is captured and becomes our “Max Load”.

As is the way with improved architectures, power efficiency is a definite priority of both AMD and Intel, and on Sandy Bridge, the improvements are evident. How so? Well, the quad-core/eight-thread Core i7-2600K uses less power than the dual-core/four-thread Core i5-530 Clarkdale processor. Given the major performance advantage that the 2600K has, that’s without question one of the more impressive features of Sandy Bridge.