All Kill3r December 14, 2003 Share All Kill3r Member December 14, 2003 (edited) ok. say you have pc3200 ram that runs at 200mhz (ddr400) and your proc fsb set to say 250mhz on a locked x14multiplier, is this differnece is fsb limiting the cpu from full potential ? in which case faster ram would be needed or an oc ? still...if you can only get the mhz of the ram up to say 220ish with increased voltage thats still 30mhz shy of the 250 comin from the cpu. if the case is that efficieny is being lowered by the non-matching speeds of the ram and cpu would changing the ratio on the ram to say 5:4 instead of 1:1 be what is needed or would this lower performance too? also, if you run dual channel ram and stick another chip in, do the 2 originals still run dual and the 1x stick runs single ? thnx, just trying to get a better idea of what i can expect to see out of my new rig. Edited December 14, 2003 by All Kill3r Link to comment Share on other sites More sharing options...
dwEEziL December 14, 2003 Share dwEEziL Member December 14, 2003 Answering your questions backwards...Adding a 3rd stick of ram converts all the RAM to single channel. IIRC, your FSB will not ramp down to the RAM, it will just run that fast and you will have RAM issues. But you might check your BIOS because most newer BIOS, esp. those designed with OC features, will allow you to lock the RAM freq to a speed different from the overall FSB (similar to locking the AGP at 66 and PCI at 33). Link to comment Share on other sites More sharing options...
All Kill3r December 14, 2003 Author Share All Kill3r Member December 14, 2003 cool thnx Link to comment Share on other sites More sharing options...
NOFX December 14, 2003 Share NOFX Member December 14, 2003 my experiance is a huge performance lose if your ram is lower than your CPU. For instance I had my CPU at 220Mhz and RAM was at 200 and it ran really poor. It ran much faster when they were in sync, even though it was at a lower clock rate. It would take a long time for internet explorer to come up etc. But it all depends, just play around with the settings to get it to run the best. Link to comment Share on other sites More sharing options...
All Kill3r December 14, 2003 Author Share All Kill3r Member December 14, 2003 so is what your saying that to achieve the most bang outta a P4 3.5+ghz speeds with a 1ghz (250x4) fsb that ram would need to be at atleast 250mhz so....... pc3500 may be a better choice for oc'ers ? is that where this is headed.... Link to comment Share on other sites More sharing options...
CannibalisticH0b0 December 14, 2003 Share CannibalisticH0b0 Member December 14, 2003 250MHz FSB = 500MHz RAM speed; PC3500 wouldn't make all too much difference, being only 433MHz, so if ya'd wanna get stable non-OC'ed RAM, then u'd have to get PC4000 or whaterver... of course, if u had good RAM that can stably OC pretty high, then u could just use that... Link to comment Share on other sites More sharing options...
All Kill3r December 15, 2003 Author Share All Kill3r Member December 15, 2003 250MHz FSB = 500MHz RAM speed cool thnx Link to comment Share on other sites More sharing options...
Birdman December 15, 2003 Share Birdman Member December 15, 2003 250Mhz on a P4 system = 1Ghz FSB!!!!!!!!!!!!!!!!!!!!!!!! Thats what a pal of mine runs with Kingston Hyper X PC 4000 Ram and he loves the results Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now