If your motherboard brand is not here, but the BIOS is the same. There is should be some similarities in their names.įor example, the Phoenix award BIOS, EVGA Uncore clock name and DFI Uncore clock name.ĬPU Uncore Frequency(EVGA) and Uncore Frequency(DFI) Pheonix - Award BIOS - (PAB) <- EvgaĪward Software BIOS -(ASB) <- Gigabyte I am going to use the three most popular boards:īIOS name comparison(just to avoid confusion)Īmerican Megatrends, Inc.- (AMI) <- Asus Uncore & QPI Features (northbridge/元 cache) = It doubles the memory multiplier. In theory, the higher the Uncore speed, the better the performance because it gives memory and other components inside the processor a boost and more bandwidth. The very important thing here about the setting up the Uncore is always remember that the Uncore must run at twice the speed of the Memory. So basically if your memory is 1600MHz, then you have to set your Uncore 3200MHz or 2x+1.Į.g. 200(BCLK) * 8(Sys Mem Multi) = 1600MHz (RAM speed) System Memory Multiplier (SPD) = Memory's multiplierīCLK Frequency * Sys Mem Multi (SPD) = Memory's speedĮ.g. QPI Link Speed = specify the speed connecting IOH(Northbridge) to the CPU. If you want to reach higher Base Clock, you have to lower your QPI Link Speed.Į.g. 20(CPU Clock Ratio) * 200(BCLK frequency) = 4000Mhz or 4.0GHz because everything is interconnected.īCLK Frequency(MHz) = Is kind of similar to the FSB(full system bus) but it is not. Base clock determines the final Mhz speed. Well, if your MOBO is either Evga, Asus or Gigabyte x58. I provided a BIOS name comparison guide therefore, you won't get confuse. Or you can use this guide as a reference.Ī small Information before we start OCing the i7Īll the frequency and multiplier on all my examples are based on i7 920 4.0Ghz overclocked.Ĭhanging the Base Clock speed will affects the QPI link speed, Uncore, and memory freq. You must be asking yourself, "Why am i reading this? my BIOS layout is different than this guy's." Never use any overclocking software because they may f**k up your system. You can, however, use the utility software that comes with my motherboard. It will help you to bump the voltages up a little while on WIndows instead of going back to the BIOS. Once you found the stable voltage, then you can manually set it in the BIOS. I have said this so many times. Every processor are different even they are the same model and stepping. Therefore, use the proper voltage and CMOS settings for your CPU needs. And just for the hell of it update your drivers Download all necessary tools/utilities for monitoring your temps, CPUID and stress test program.ĥ. Update your BIOS firmware to whatever the latest BIOS FW available. If you OCed your PC already and want to flash the BIOS to the latest BIOS, to aviod bricking reset your CMOS settings before you flash it.Ĥ. Learn how to reset your CMOS in case your PC locks up at post or won't power on.ģ. First thing first, read your mainboard's user's manual. Therefore, you will be familirized with your mobo.Ģ. Stock CPU HSF can only handle the stock specs, so if you are planning to OC, then buy a better HSF or LC/WC.ġ. Make sure your PC has a proper cooling. Stock cooling won't work. Monitor the system temperature all the time. The higher the frequency the higher the risk of over-heating. Overclocking will Void you warranty. Once you get started, there is no turning back. We may also shorten the life span of the procesor. RTW and me, 123456iambelial, are not responsible for any damage that might happen. Remember this is just a guide. Goal is 4.0GHz - 4.2GHz(with turbo mode enabled) Un-official RTW X58 OCing noob guideĠ7.27.09 - 21:00 EST
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