fslobodian Posted October 25, 2005 Share Posted October 25, 2005 My Twinx 1024 4000Pro fails mem test when running at ddr 500 with advertised timings of 3-4-4-8, voltage of 2.8 I have an asus a8n sli premium amd x2 4400 Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 25, 2005 Corsair Employees Share Posted October 25, 2005 That may not be the memory. Can you test them in another system that will run at 500 MHz like an Intel platform would be prefered. And Can you tell me the bios settings you had set for both CPU and memory? Moving to Compatibility Questions! Link to comment Share on other sites More sharing options...
fslobodian Posted October 26, 2005 Author Share Posted October 26, 2005 HT @ 250 Multiplier x10 Memory 1:1 Have a pentium 4 system downstairs, not sure i will be able to test the memmory at ddr 500, it is a not very good dell sytem. I will check it out tommorow. I have also read on reviews of people underclocking the memmory and using cas latencys of 2 the lowest i have ever reached is 2.5 if i go any lower the computer will not boot and cmos must be reset. I had no problems running my twinx 1024 3200 xlpt at 2-2-2-5. Link to comment Share on other sites More sharing options...
CandyKid Posted October 26, 2005 Share Posted October 26, 2005 If I recall correctly, the PC4000 modules use specifically CAS 3 IC's on them, so anything under that, even at slower speeds, is purely based on luck. They're designed for CAS 3. On the other hand the IC's on the XL's are meant to run 2-2-2-5's and while they probably could run 3-4-4-8 because it is slower, that does not mean that a 3-4-4-8 part can run 2-2-2-5 even if the memory controller is capable of doing so. That's because these latencies are intrinsic properties of the modules themselves. You could try a higher voltage setting to get better latencies, but don't exceed 2.9 volts. PLUR CK Link to comment Share on other sites More sharing options...
CandyKid Posted October 26, 2005 Share Posted October 26, 2005 Wow, aren't you a little testy? The system is suspect because AMD systems routinely do not overclock as well as Intel systems do. RAM GUY would like to see the modules tested on a system that has proven to be able to run a 250MHz BUS rather than a system that is apparently being overclocked with untested modules. The second case here leaves TWO unknowns. 1) Can the system even overclock that high. 2) Are the modules good. If the system was capable of it (and often even if it's not), Corsair is very good about allowing RMA's and, if asked, I've even seen them specifically test the modules (even after the normal testing) to double-check them. PLUR CK Link to comment Share on other sites More sharing options...
fslobodian Posted October 26, 2005 Author Share Posted October 26, 2005 im sorry i dont know much about intel platforms. is the standard fsb 500? I do know that the amd chip is capable of clocking that far i have reached it before in a adifferent combination, , this time i have lowered the multiplyer to 10 (this is usuallly set to 11) ,so i could push the ht higher in the hope of clocking my ram higher i.e.ddr 500. I bought this ram because i read that it was very good for overlcocking!, i have also seen it in reviews being tested on amd platforms. Link to comment Share on other sites More sharing options...
CandyKid Posted October 26, 2005 Share Posted October 26, 2005 The standard Intel FSB is actually 200MHz, but quad-pumped to an '800' data rate. As for the modules, logically of course they're good for overclocking. They were tested / made to run 50MHz above stock for any current system running DDR memory (current stock max speeds are DDR400 / 200MHz). Yes, AMD systems can and do make it to 250MHz and above, but the CPU, mainboard, and power supply all make a big difference. There's also a difference even between two CPU's of the exact same type! So while AMD is catching up in leaps and bounds to the overclockability of Intel systems, they're not quite there yet. Intel is still a more reliable overclocking base. When you say, "in a different combination," what do you mean? PLUR CK Link to comment Share on other sites More sharing options...
fslobodian Posted October 26, 2005 Author Share Posted October 26, 2005 ok, i have very good cooling, & power supply etc. when i say i reached the clock speed by a different combination i mean a higher multiplier but a lower ht i.e 11 X 227. i am about to try the memmory in the pentium machine i will let u know how it goes, i hope it will allow me to run at ddr 500. Link to comment Share on other sites More sharing options...
CandyKid Posted October 26, 2005 Share Posted October 26, 2005 The HT frequency affects how the memory controller works and the MCH is usually one of the limiting factors in overclocking the new AMD's. FYI. Keep up posted! PLUR CK Link to comment Share on other sites More sharing options...
fslobodian Posted October 26, 2005 Author Share Posted October 26, 2005 ok well that was just a big waste of time, it wont even boot in the crappy dell intel system downstairs. the thing just beeps at me. guess ill just have to make do with running it at less than ddr 500 for know. its a shame the memory divider doesnt seem to work on this board so it limits my options . what would you say is the recommended, and safest highest voltage i can go to with this memmory. i am currently at 2.8v, prehaps if i raised this it mite pass the mem test, but i dont want to damage the memory. Link to comment Share on other sites More sharing options...
CandyKid Posted October 26, 2005 Share Posted October 26, 2005 They're warrantied up to, but not past 2.9 volts. DELL systems would not be a good choice to test high performance memory modules... they're a bit finicky... Also, it's a shame you can't test the memory to rule it out... PLUR CK Link to comment Share on other sites More sharing options...
fslobodian Posted October 26, 2005 Author Share Posted October 26, 2005 ok im gonna give it a shot at 2.9 volts. my mate has an intel system, so hopefully at some point i will get a chance to try it out. Link to comment Share on other sites More sharing options...
fslobodian Posted October 26, 2005 Author Share Posted October 26, 2005 Hey thanks for all your help fellas. Upped the voltage to 2.9 & passed mem test 5 times at ddr 500 3-4-4-8. Could be that the board supplies less than you assign it, as it does this with the cpu. Not sure why!!! Anyways its working know. Appreciate the feedback. Link to comment Share on other sites More sharing options...
CandyKid Posted October 26, 2005 Share Posted October 26, 2005 Great news! Glad to hear it! BTW, you should be able to use a motherboard monitor to watch your voltages or in the BIOS there's often a screen that will show them to you... often under "System Information" or the like. PLUR CK Link to comment Share on other sites More sharing options...
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