Xtreeme Posted December 28, 2007 Share Posted December 28, 2007 I currently have TWIN2X1024A. I just ordered TWIN2X2048-6400C5DHX and should be here today. Will it be ok to use both, for instance by just using the slowest timings of the set (DHX is higher latency)...They are both matched pairs, but Im not sure how the a64 handles that kind of mix, that is two diff sets of matched pairs. Should I just try and see, or could there be a voltage diff etc and confuse mobo. Just checking first. Am2 3800+ EE 65watt Biostar Tforce550 (ram listed above) thanks. Link to comment Share on other sites More sharing options...
Yellowbeard Posted December 28, 2007 Share Posted December 28, 2007 We don't recommend mixing memory as it can be unstable. However, the ONLY way to know for sure is to install and test. If the system is not stable using SPD timings, I'd suggest you use the slower set and set the timings and voltages manually in the bios. Then, reinstall the other set and see if it will all play nice together. Link to comment Share on other sites More sharing options...
Xtreeme Posted December 28, 2007 Author Share Posted December 28, 2007 Thanks for the reply. Ill test the new ram first and make sure its 100%. Then maybe add the other ram in and see what happens then. Is it going to be much diff? That is 2GB vs 3. I game and do web work which includes photoshop and illustrator for web graphics, run uniform server, and tmpgenc for making dvds. I often run several apps all at once. XP pro 32bit os. From what Ive been reading today it seems Id be better off just using the 2gb match pair as the diff wont be very noticeable and prob not worth any possible stability issues. 2GB the better choice overall? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted December 28, 2007 Corsair Employees Share Posted December 28, 2007 2 gig in Two modules would be best for performance, and if you install more than 2 modules you might be limited to DDR667. Link to comment Share on other sites More sharing options...
Xtreeme Posted December 28, 2007 Author Share Posted December 28, 2007 O.K. Since thats the case I think I will just bin the 2x512mb for the home theatre build later. Thanks for all the help!:): Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted December 29, 2007 Corsair Employees Share Posted December 29, 2007 NP Please let us know if you have any more questions! Link to comment Share on other sites More sharing options...
Xtreeme Posted December 29, 2007 Author Share Posted December 29, 2007 New ram was crashing left and right. Even after setting bios to auto on everything for mem and with no cpu oclock. Fix for me was to reset bios to optimised defaults (in bios didnt use jumper to clear). Possible a mem setting was sticking from last stick? Orthos "stress some ram" test would lock as soon as it started. After reset its run for 6 hours 10 minutes with 0 errors. How long till you guys consider it 100% stable? Just want to make sure since its new, and I hate mem issues. Im a believer that mem is huge part of overall stablilty (thats why I only use corsair heh).:): The ram is 1.80v but my mobo wont go lower then 1.95 is that ok? Odd it offers 2.4v which is really high but not 1.80v...... Last one, is DHX for oclocking cause I hear it is...wouldnt that void the warrenty though? NEver clocked ram, only cpus always used divider to keep mem at stock or just under. Link to comment Share on other sites More sharing options...
bigbuck08 Posted December 29, 2007 Share Posted December 29, 2007 About 8hrs is the normal for using Prime95 to test for stability. If it is stable at 1.8v I would leave it there. All DHX is, is the added heat sink. It is the same RAM but will most likely run cooler. As long as you stay under the tested voltage you can overclock all you want. Link to comment Share on other sites More sharing options...
Xtreeme Posted December 30, 2007 Author Share Posted December 30, 2007 I cant do 1.8 vdimm, its simply not a option on biostar tforce550 (nvidia chipset). 1.95vdimm is lowest I see.....auto volt sets it there aswell (confirmed with XP apps). I got it ok at ddr2 800 so no need to clock it after all. What happen is, you set the lower divisor and the bios ASSUMES (ya know that that makes us? heh) that its the lower speed and using the spd timings for that speed! Which are way toooooo tight. Id guess that is what 90% of the issues are when folks drop the divisor and it still wont work. It wasnt the main 4 timings either-it was the other less known ones. I set these RC-22 RFC-42 RRD-3 WR-6 WTR-3 RTP-3 and wham rock solid with my cpu at its old 2.4ghz (20% oclock stock volts). Those often unknown timings are KEY to stablilty (not speed). The mroe you raise mhz the more laxed the RFC needs to be aswell. The other 4 timings are simple. Finding the rest I had to use everest. I really wich ram manufacturers would start listing the FULL spec of modules as programed in the spd. The spd is easily misread by the bios-like happened to me. Link to comment Share on other sites More sharing options...
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