I recently built the following machine...
Asus M4A79XTD MB
AMD PH II X4 955 3.2ghz
Sunbeam freezer with AS5
Saphire Radeon 4890
4gb Gskill DDR3 1600
1 TB Seagate HD
Antec 300 case with extra fans (all air exiting the case is cool)
500w Thermaltake psu
I understand that these cpus dont have a FSB, but rather a onchip memory controller (which ONLY talks to the memory, right?), and a HyperTransport (which talks to nb/everything else). So question 1...
1.) In my bios, I have a option for CPU BUS Freq. I assume this is how I control the freq of this 'memory controller'?
Assuming that is correct, my next question is...
2.) Since my DDR31600 memory should operate at 800mhz (base), if I dont set my CPU Bus Freq to AT LEAST 800hz, arent I bottlenecking communication between my cpu and ram? I understand you CAN use different freq ratios between cpu and memory, they dont have to be 1:1. But I want my memory to run at 800hz, so doesnt my "CPU Bus Freq" HAVE to be set at 800hz as well? However, if I recall my CPU Bus Freq didnt even have an option to go that high.. it could only go 200-600...
And last question...
3.) I have heard mixed reports that modifying my "CPU Bus Freq" will also effect my HT/NB speeds. That doesnt make any sense, since I thought we were just dealing with the onchip MEMORY controller here... I mean my HT has its OWN independent setting in my bios, so you think the two wouldnt be tied together. Cananyone confirm/ deny?
Thanks!
Asus M4A79XTD MB
AMD PH II X4 955 3.2ghz
Sunbeam freezer with AS5
Saphire Radeon 4890
4gb Gskill DDR3 1600
1 TB Seagate HD
Antec 300 case with extra fans (all air exiting the case is cool)
500w Thermaltake psu
I understand that these cpus dont have a FSB, but rather a onchip memory controller (which ONLY talks to the memory, right?), and a HyperTransport (which talks to nb/everything else). So question 1...
1.) In my bios, I have a option for CPU BUS Freq. I assume this is how I control the freq of this 'memory controller'?
Assuming that is correct, my next question is...
2.) Since my DDR31600 memory should operate at 800mhz (base), if I dont set my CPU Bus Freq to AT LEAST 800hz, arent I bottlenecking communication between my cpu and ram? I understand you CAN use different freq ratios between cpu and memory, they dont have to be 1:1. But I want my memory to run at 800hz, so doesnt my "CPU Bus Freq" HAVE to be set at 800hz as well? However, if I recall my CPU Bus Freq didnt even have an option to go that high.. it could only go 200-600...
And last question...
3.) I have heard mixed reports that modifying my "CPU Bus Freq" will also effect my HT/NB speeds. That doesnt make any sense, since I thought we were just dealing with the onchip MEMORY controller here... I mean my HT has its OWN independent setting in my bios, so you think the two wouldnt be tied together. Cananyone confirm/ deny?
Thanks!