![]() ![]() We won't be running ram faster than it is designed to go for stability, but that doesn't mean that we won't be changing memory settings. Okay today I'm going to talk about oveclocking on AM3 CPUs, these will work on any AM3 CPU, not just Phenom. This is pasted from my AM3 OC guide but for some reason it doesn't show unless I'm editing it Further, AMD provides a complete guide to using the Overdrive utility.Do a CPUz and find out which revision it is, if it's RB-C3 then you can get to 4Ghz. It can also provide quick stability and performance checks, along with incremental, minor changes between more intensive firmware-based modifications. A much deeper and finer level of tuning can be achieved via BIOS overclocking, but Overdrive does not require a reboot for changes to be applied. AMD OverdriveĪMD’s own desktop software suite, Overdrive, offers benchmarking utilities, stress and stability tests, and overclocking controls. CPU frequencies (though not necessarily stability) can also be improved slightly by increasing the northbridge and HyperTransport speeds, depending on what the bottlenecks are. The BCLK can also be driven much higher, over 220 MHz, before motherboard components start to fail. Vishera (FX) prefers temperatures around 60 to 70 ☌, generally lower than Kaveri-refresh chips. Additional stability can be eked out of the system by adjusting northbridge frequencies. ![]() The integrated memory controller also runs into some problems members of the community have reported that DRAM frequencies set to “Auto” don’t often work well, and need to be tuned manually. BCLK is set to a default 100 MHz, and base frequencies beyond 105/106 MHz are typically unstable. Heat, as always, is a problem-the Kaveri-refresh chips (A10) do best with temperatures below 70 ☌, and overclocks max out around 4.8 GHz. Overclocking an AMD processor is similar to overclocking an Intel processor, with differences in some terminology and (on the whole) a deeper set of tunable variables. Though early APU overclockers reported stability issues with firmware-based overclocking, enough time has gone by that the choice between AMD’s Overdrive software, firmware overclocking, and third-party utilities is mostly a matter of personal taste. This voltage can be controlled on certain motherboards using the V REFCA and V REFDQ voltage as multipliers of V DDIO.
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