well the board says it supports 667mhz ram, but im not an expert so i can't tell you why it is running at 400mhz.Question about ram mhz
bump
DDR = DOUBLE data rate. So 400MHz (actual) x 2 = 800MHz (effective) It is perfectly normal.
[QUOTE=''ch5richards'']DDR = DOUBLE data rate. So 400MHz (actual) x 2 = 800MHz (effective) It is perfectly normal.[/QUOTE]
qft DDR means its dedicated to NOTHING as well
[QUOTE=''ch5richards'']DDR = DOUBLE data rate. So 400MHz (actual) x 2 = 800MHz (effective) It is perfectly normal.[/QUOTE]Its more like DDR2 that is 400Mhz x 2.
Its perfectly normal for your memory to run at that speed. PC2 6400 memory has a CLOCK SPEED of 400MHZ and a FSB (front side bus) speed of 800MHZ
[QUOTE=''Chris_53'']Its perfectly normal for your memory to run at that speed. PC2 6400 memory has a CLOCK SPEED of 400MHZ and a FSB (front side bus) speed of 800MHZ[/QUOTE]WHAT???
Its double data rate. 400 x 2 = 800.
[QUOTE=''Chris_53'']Its perfectly normal for your memory to run at that speed. PC2 6400 memory has a CLOCK SPEED of 400MHZ and a FSB (front side bus) speed of 800MHZ[/QUOTE]RAMs don't have no Front Side Bus, u dig? :P Processors communicate with RAM through a front side bus, but NOT at the memory's effective speed. A C2D processor with a Front Side Bus of 1066MHz (which is 266MHz, quad-pumped), would communicate with the memory at 266MHz (533MHz PC-4200 RAM is all that's really needed for 1066MHz FSB cpus). This has nothing to do with what the person I quoted wrote, but I'll say it anyway.Contrary to popular belief, running DDR2 800MHz (400MHz) memory on a 1066MHz FSB C2D system DOES NOT boost performance over plain old DDR2 533MHz memory, since the CPU's actual bus speed is only 266MHz.
[QUOTE=''My_name_a_Borat''] A C2D processor with a Front Side Bus of 1066MHz (which is 266MHz, quad-pumped), would communicate with the memory at 266MHz (533MHz PC-4200 RAM is all that's really needed for 1066MHz FSB cpus). This has nothing to do with what the person I quoted wrote, but I'll say it anyway.Contrary to popular belief, running DDR2 800MHz (400MHz) memory on a 1066MHz FSB C2D system DOES NOT boost performance over plain old DDR2 533MHz memory, since the CPU's actual bus speed is only 266MHz.[/QUOTE] Then is there a reason to use DDR2 1066MHz memory if only DDR2 533MHz memory is needed on a 1066MHz FSB C2D system?
[QUOTE=''My_name_a_Borat''][QUOTE=''Chris_53'']Its perfectly normal for your memory to run at that speed. PC2 6400 memory has a CLOCK SPEED of 400MHZ and a FSB (front side bus) speed of 800MHZ[/QUOTE]RAMs don't have no Front Side Bus, u dig? :P Processors communicate with RAM through a front side bus, but NOT at the memory's effective speed. A C2D processor with a Front Side Bus of 1066MHz (which is 266MHz, quad-pumped), would communicate with the memory at 266MHz (533MHz PC-4200 RAM is all that's really needed for 1066MHz FSB cpus). This has nothing to do with what the person I quoted wrote, but I'll say it anyway.Contrary to popular belief, running DDR2 800MHz (400MHz) memory on a 1066MHz FSB C2D system DOES NOT boost performance over plain old DDR2 533MHz memory, since the CPU's actual bus speed is only 266MHz.[/QUOTE]I have better performance with 800mhz then 533mhz.
[QUOTE=''My_name_a_Borat''] [QUOTE=''Chris_53'']Its perfectly normal for your memory to run at that speed. PC2 6400 memory has a CLOCK SPEED of 400MHZ and a FSB (front side bus) speed of 800MHZ[/QUOTE]RAMs don't have no Front Side Bus, u dig? :P Processors communicate with RAM through a front side bus, but NOT at the memory's effective speed. A C2D processor with a Front Side Bus of 1066MHz (which is 266MHz, quad-pumped), would communicate with the memory at 266MHz (533MHz PC-4200 RAM is all that's really needed for 1066MHz FSB cpus). This has nothing to do with what the person I quoted wrote, but I'll say it anyway.Contrary to popular belief, running DDR2 800MHz (400MHz) memory on a 1066MHz FSB C2D system DOES NOT boost performance over plain old DDR2 533MHz memory, since the CPU's actual bus speed is only 266MHz.[/QUOTE]RAM DOES HAVE A FSB SPEED U TW*T, DO U EVEN STUDY I.T AT COLLEGE.
[QUOTE=''Chris_53''][QUOTE=''My_name_a_Borat''] [QUOTE=''Chris_53'']Its perfectly normal for your memory to run at that speed. PC2 6400 memory has a CLOCK SPEED of 400MHZ and a FSB (front side bus) speed of 800MHZ[/QUOTE]RAMs don't have no Front Side Bus, u dig? :P Processors communicate with RAM through a front side bus, but NOT at the memory's effective speed. A C2D processor with a Front Side Bus of 1066MHz (which is 266MHz, quad-pumped), would communicate with the memory at 266MHz (533MHz PC-4200 RAM is all that's really needed for 1066MHz FSB cpus). This has nothing to do with what the person I quoted wrote, but I'll say it anyway.Contrary to popular belief, running DDR2 800MHz (400MHz) memory on a 1066MHz FSB C2D system DOES NOT boost performance over plain old DDR2 533MHz memory, since the CPU's actual bus speed is only 266MHz.[/QUOTE]RAM DOES HAVE A FSB SPEED U TW*T, DO U EVEN STUDY I.T AT COLLEGE. [/QUOTE]
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|[QUOTE=''Bebi_vegeta''][QUOTE=''My_name_a_Borat''] [QUOTE=''Chris_53'']Its perfectly normal for your memory to run at that speed. PC2 6400 memory has a CLOCK SPEED of 400MHZ and a FSB (front side bus) speed of 800MHZ[/QUOTE]RAMs don't have no Front Side Bus, u dig? :P Processors communicate with RAM through a front side bus, but NOT at the memory's effective speed. A C2D processor with a Front Side Bus of 1066MHz (which is 266MHz, quad-pumped), would communicate with the memory at 266MHz (533MHz PC-4200 RAM is all that's really needed for 1066MHz FSB cpus). This has nothing to do with what the person I quoted wrote, but I'll say it anyway.Contrary to popular belief, running DDR2 800MHz (400MHz) memory on a 1066MHz FSB C2D system DOES NOT boost performance over plain old DDR2 533MHz memory, since the CPU's actual bus speed is only 266MHz.[/QUOTE]I have better performance with 800mhz then 533mhz.[/QUOTE]Not unless you're overclocking the CPU. High speed RAM is only needed for overclocking. PC4200 is all that's needed for a Core 2 Duo with a 1066MHz FSB. And PC5300 (667MHz effective) is all that's needed for FSB 1333 C2D chips. For optimal performance, RAM speed and bus speed should be at a 1:1 ratio.
[QUOTE=''Utsusemi''] [QUOTE=''My_name_a_Borat''] A C2D processor with a Front Side Bus of 1066MHz (which is 266MHz, quad-pumped), would communicate with the memory at 266MHz (533MHz PC-4200 RAM is all that's really needed for 1066MHz FSB cpus). This has nothing to do with what the person I quoted wrote, but I'll say it anyway.Contrary to popular belief, running DDR2 800MHz (400MHz) memory on a 1066MHz FSB C2D system DOES NOT boost performance over plain old DDR2 533MHz memory, since the CPU's actual bus speed is only 266MHz.[/QUOTE] Then is there a reason to use DDR2 1066MHz memory if only DDR2 533MHz memory is needed on a 1066MHz FSB C2D system?[/QUOTE]No, unless you're overclocking. DRAM speed and bus speed should always be equally matched for optimal performance, and in the case of a non-overclocked1066MHz FSB cpu, that would be PC4200 memory
[QUOTE=''Chris_53''][QUOTE=''My_name_a_Borat''] [QUOTE=''Chris_53'']Its perfectly normal for your memory to run at that speed. PC2 6400 memory has a CLOCK SPEED of 400MHZ and a FSB (front side bus) speed of 800MHZ[/QUOTE]RAMs don't have no Front Side Bus, u dig? :P Processors communicate with RAM through a front side bus, but NOT at the memory's effective speed. A C2D processor with a Front Side Bus of 1066MHz (which is 266MHz, quad-pumped), would communicate with the memory at 266MHz (533MHz PC-4200 RAM is all that's really needed for 1066MHz FSB cpus). This has nothing to do with what the person I quoted wrote, but I'll say it anyway.Contrary to popular belief, running DDR2 800MHz (400MHz) memory on a 1066MHz FSB C2D system DOES NOT boost performance over plain old DDR2 533MHz memory, since the CPU's actual bus speed is only 266MHz.[/QUOTE]RAM DOES HAVE A FSB SPEED U TW*T, DO U EVEN STUDY I.T AT COLLEGE. [/QUOTE]lawl. That 800MHz number you were referring to is the memory's effective speed. The RAM communicates through the processor's front side bus at 266MHz (on the typical 1066MHz FSB C2D chips). btw, processor's also used to have a backside bus through which L2 cache communication took place. I'm not sure about how that all works on today's CPUs.
[QUOTE=''My_name_a_Borat''][QUOTE=''Bebi_vegeta''][QUOTE=''My_name_a_Borat''] [QUOTE=''Chris_53'']Its perfectly normal for your memory to run at that speed. PC2 6400 memory has a CLOCK SPEED of 400MHZ and a FSB (front side bus) speed of 800MHZ[/QUOTE]RAMs don't have no Front Side Bus, u dig? :P Processors communicate with RAM through a front side bus, but NOT at the memory's effective speed. A C2D processor with a Front Side Bus of 1066MHz (which is 266MHz, quad-pumped), would communicate with the memory at 266MHz (533MHz PC-4200 RAM is all that's really needed for 1066MHz FSB cpus). This has nothing to do with what the person I quoted wrote, but I'll say it anyway.Contrary to popular belief, running DDR2 800MHz (400MHz) memory on a 1066MHz FSB C2D system DOES NOT boost performance over plain old DDR2 533MHz memory, since the CPU's actual bus speed is only 266MHz.[/QUOTE]I have better performance with 800mhz then 533mhz.[/QUOTE]Not unless you're overclocking the CPU. High speed RAM is only needed for overclocking. PC4200 is all that's needed for a Core 2 Duo with a 1066MHz FSB. And PC5300 (667MHz effective) is all that's needed for FSB 1333 C2D chips. For optimal performance, RAM speed and bus speed should be at a 1:1 ratio.[/QUOTE]You have bigger bandwidth when you have 800Mhz vs 533Mhz at the same timings.
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