Benchmarks – Overclocked to 4.6 Ghz
Although the i7-3820 is a partially locked processor, we can still overclock by four speed bins for a maximum of 4.3GHz. Add to that the increase of base clock (BCLK) from 100Mhz original to 125Mhz for a total theoretical turbo of up to 4.87Ghz. Every batch or even a single unit of production is unique and will respond slightly differently to overclocking. In our case a mulitplier of 37 with a base clock of 125Mhz was the highest stable clock achieved. Therefore our overclocked benchmarks will be run at 4.625Ghz.
AIDA64 v1.50.1230
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| CPU Queen – 2nd |
CPU PhotoWorxx – 1st |
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| CPU Zlib – 2nd |
CPU AES – 1st |
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| CPU Hash – 4th |
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In our AIDA64 benchmarks we find improvements in scores in all 5 tests. Results in all tests move the i7-3820 up the list, however the over-clocked 2600K maintains a slight advantage over the the OC’d 3820 in all tests.
PCMark Vantage x64
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| How the test was setup to run | Results – PCMarks 5833 vs PCMarks 5180 [Stock] |
The .
PerformanceTest v7.0
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| PassMark Rating – 4070.1; up from 3318.9 stock |
CPU Rating – 12289.5; up from 9940.3 stock |
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Stock CPU comparison
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Overall we see a decent increase in performance indicated by the PerformanceTest suite, not bad for a ~28% CPU overclock.
Here is an overview of an Intel based Dell PowerEdge R720 : https://www.youtube.com/watch?v=wxkjrQ4UbJk