Overclock
Select 2nd Gen Core family processors delimited with a ‘K’ in the product identification are unlocked meaning the multiplier can be adjusted to change the overall CPU speed. Basically CPU speed = CPU Ratio (or multiplier) times Base clock frequency (or BCLK). Although the BCLK is able to adjust -/+ 10% it is best practice to leave it at the default and specified 100MHz.
Benchmarks – Overclocked to 4.40 Ghz
With a multiplier of 44 and a base clock of 100Mhz 44 x 100Mhz = 4400Mhz or 4.40 Ghz. With a 29% increase in clock speed the CPU averaged about 36C/97F doing basic word processing and web browsing. Now to put the processor to the test at 4.40 Ghz.
AIDA64 v1.50.1230
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| CPU Queen – 1st
[2600K] 555034 vs 37775 [2500K] |
CPU PhotoWorxx – 1st
[2600K] 77446 vs 69903 [2500K] |
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| CPU Zlib – 2nd
[2600K] 342.1 MB/s vs 233.6 MB/s [2500K] |
CPU AES – 1st
[2600K] 561547 vs 575612 [2500K] |
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| CPU Hash – 6th
[2600K] 2573 MB/s vs 2316 MB/s [2500K] |
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In our AIDA64 benchmarks we find improvements in scores in all 5 tests. Results in all tests move the i7-2600K to 1st place in all but 1 test, CPU Hash. The over-clocked 2600K remains a distance ahead of the over-clocked 2500K in all tests.
PCMark Vantage x64
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| How the test was setup to run | Results – 13711 Marks; up from 12220 stock |
The 2600K overclock to 4.40 GHz gains ~1500 Marks in the PCMark Vantage test suite showing that even this small overclock will squeeze extra juice from the i7-2600K.
PerformanceTest v7.0
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| PassMark Rating – 2621.1; up from 2297 .2 stock |
CPU Rating – 11658.9; up from 9390.8 stock |
| [2500K 8287.8] | |
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Detailed CPU comparison to i7 920, i5-2500K, i7-2600K Stock The OC Core i7-2600K is in green 1st in all categories, severely passing in some!
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Overall we see about 14% increase in performance indicated by the PerformanceTest suite, not bad for a 29% overclock.
SiSoftware Sandra 2011c
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| Processor Arithmetic | ||
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| Processor Multi-Media | ||
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| Multi-Core Efficiency | ||
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| Power Management Efficiency | ||
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| Cryptography | ||
2600k @ 3.6, Turbo booster to 4 gigahertz, Msi P67a-gd65, Corsair Vengence 1600 8 gigs(1.5), Msi gtx 560 ti Frozr 2 overclocked. Very awesome system! Plays everything I throw at it! This system will last for years!