Wednesday, November 2, 2011

First 24 hours with AMD "Bulldozer" FX-8120

   Monday afternoon i got AMD "Bulldozer" FX-8120, finally. Almost 3 weeks waiting cpus arrive to importers and it's finally up and crunching.  Corsair H100 (CDON.FI sells it for 87€) takes care of cooling the beast. Corsair H100 is one of the best cooling units in the market and i have tested it with 24/7 Boinc crunching with cpu(AMD Phenom II 1055T and from Monday FX-8120) and two gpus(Powercolor 6870 and Palit GTX460 1gb) 100% usage around the clock. There is alot of heat generated in the Xigmatek Midgard case. Corsair H100 and  six Scythe Gentle Typhoons 1850 rpm fans are doing excellent job with cooling.

   Overclocking is fun with "Bulldozer". So much tweaking and testing. I love this cpu. With stock voltages 4.0ghz. Only issue i am having is with APM dropping multiple to 14 with benchmarks like Cinebench , Prime95, OCCT, GeekBench and Linx. Issue only happens when stressing all 8 cores to 100% usage with single multihreaded software. If i run 8 times memtest with 100% core usage to all cores or running 8 boinc cpu tasks multiplier doesn't drop and i am getting 100% performance out from Bulldozer. Gigabyte GA-970A-UD3 bios doesn't have any options in it to disable APM function. I have to wait for new Bios and hope Gigabyte adds APM option to it.

   I will continue with my Overclocking experiments once i have my time.

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