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Old 12-18-2008, 06:26 AM
kesda kesda is offline
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Default Some further questions re: tfr speeds

Ok,
I finally managed to understand more on how over-clocking works.
I over-clocked my Q6600 to 3.0 GHz by setting the FSB to 1333 and changed the SPD so that the memory ran at 667, 800 and 1066. The system seem to work fine though I will need to run more tests and keep an eye on the CPU core temperatures. Probably need to get an aftermarket cpu cooler.
I have a few questions on the TWIN2X4096-8500C5DF RAM transfer speeds.

Q1: The Dominator TWIN2X4096-8500C5DF is spec at 8,500 MB/s. Is that per channel?

Memtest86 reports the following results:-
FSB..........CPU(Ghz)...RAM........TFR speed (MB/s)........FSB:DRAM (CPU-Z)
1333........3.0............667.........4,185........................1:1
1333........3.0............800.........4,682........................3:2
1333........3.0............1066........5,323........................5:8
1066........2.4............1066........4,463........................1:2..............(no overclocking)

Q2: Does it mean that if I run the FSB@1333 and RAM at 1066, due to the ratio of the FSB:DRAM 5:8, the delays in servicing a fetch from DRAM will result in a max tfr rate of 5323MB/sec? per channel? i.e. I will never get the max tfr rate of 8500 with my setup

Q3: With the Dual Channel however, does it also mean that I get an effective tfr rate of 10,646 or will it be less due to the FSB settings(i.e. 1333)?

Thank you in advance for your help.

Last edited by kesda; 12-18-2008 at 01:38 PM.
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