rufen:
http://www.evga.com/forums/tm.aspx?m=81651
Ok first you need to know your ram specifications, most ram sticks have a sticker with that info. If not google will help you.
These are rated for 2000mhz @ 1.65v with 7-8-7-20 timings. sometimes a fith number is given like 7-8-7-20-66
Depending on your bios brand, the timings correspond to those values :
-> 7 - 8 - 7 - 20 - 66
-> tCL - tRCD - tRP - tRAS - tRFCor
-> CAS# Latency - RAS# to CAS# - RAS# Precharge - tRAS# - tRC#
Write those down, you will need them soon, aslo voltage and speed.
CPU frequency and ram speed is directly related to each other via the ram divider in bios.
-BCLK/ Base Clock is your base clock. Increasing your base clock usually increases your CPU core clocks, your memory and a few other clocks. BCLK is also known as base clock, Bclock, and CPU Frequency setting (on evga boards) Default by Intel is 133.0mhz Base Clock
CPU Frequency = Base Clock (blck) * CPU Multiplier :
133 x 23 = 3059.
Memory Frquency = Base Clock * Ram Divider (these are 2:6 , 2:8, 2:10, 2:12, 2:14 etc) just divide them 2:12 = 1:6 or just 6.
(blk) / divider
855.9 / 6 = 142.5 Base Clock
Example for Default Ram Speed
The ram we have on i5/i6/i7 works as double channel ram (DDR) so we have to mulitply the ram freqency with 2 to get effective ram speed:
885.2 * 2 = 1771.8 Mhz Effective Ram Speed
Example with Default 133.3 Mhz Base Clock :
2:6 = 800 Mhz
2:8 = 1066
2:10 = 1333
2:12 =1600
2:14 = 1866
2:16 = 2133
Voltages
For basic oc'ing these are the important voltages :
-VCore is your processor core voltage. Increasing this will supply your cores the power they need to operate at the frequencies you overclocked them to. MAX 1.55v unless you have subzero cooling like Dry Ice or Liquid Nitrogen, Phase Change etc..
-CPU VTT @ 1.225 or whatever it takes for your ram to be stable, MAX 1.50 MAX 1.55v @ above 1600-1700 Ram Speed you need to have 1.3- 1.4v for ram stability.
-vDIMM is your RAM's voltage MAX 1.66v or as specified on the ram stick
[porady Seraphine z gildii SUN, ktory 'zawodowo' zajmuje sie oc]