January 03, 2011, 1:38 PM — Intel has pulled back the proverbial curtain on their second-generation Core processors, which were previously known by the codename "Sandy Bridge." The new CPUs are built on a brand new microarchitecture, and feature a number of enhancements, including improved integrated graphics performance.
For a detailed run-down of all that Sandy Bridge has to offer, be sure to check out our overview of the new features baked into the second-generation of Intel's Core processors.
Testing Sandy Bridge
For our tests, We'll be looking at a pair of processors: the 3.3GHz Core i5-2500K ( $216), and the 3.4 GHz Core i7-2600K ($317). For the Core i5-2500K, Intel provided the DH67BL "Bearup Lake" motherboard, which is equipped with Intel's second-generation integrated graphics on the H67 chipset. For the Core i7-2600K, we're using the DP67BG "Burrage" motherboard, sporting the performance oriented P67 chipset.
New CPUs, new chipsets, and -- much to the chagrin of serial upgraders -- new sockets. The second-generation Intel CPUs are using the LGA-1155 socket, so you'll need to pick up an entirely new motherboard if you're planning on picking up a new CPU.Both testbeds were outfitted identically: 4GB of DDR3 RAM, a 1 TB hard drive, an AMD Radeon HD 5870 graphics card, and an optical drive for loading applications. Occasionally, the graphics card on the i5-2500K testbed was removed for comparison testing of the H67 chipset's integrated graphics. The processors were left at their stock clock speeds, while the machines provided by MicroExpress and Origin sported generous overclocks. Lets check out the results!
Performance: Worldbench 6
First up is PCWorld's WorldBench 6 benchmark suite. For the uninitiated: WorldBench consists of a series of tests using real world applications to gauge a PC's performance. A series of applications run, simulating a typical workload. A WorldBench score is then compiled based on how long it took the machine to complete tasks. The results on our reference boards are impressive: Our Core i7-2600k earned a WorldBench score of 156, while the Core i5-2500K earned a 150.
Let's put those numbers in perspective. Back in August we reviewed Maingear's F131, a $2000 Mainstream desktop equipped with a Core i5-655K processor, 4GB of RAM, and a 1TB hard drive. It earned a WorldBench score of 152, but only after Maingear overclocked the CPU all the way up to 4.5GHz.
