ecstuchi Posted October 23, 2005 Share Posted October 23, 2005 Hello, I'm having some problems with my optimal configuration here and I wann some help and/or instructions. I have an Asus A8N-SLI Premium and I bought the Corsair TWINX1024-4400C25 and I've tried all kind of configuration to use the memory at DDR500 or DDR550. My BIOS is the latest and I've read my processor (4000+ San Diego Core) supports DDR433, 466 and 500 without needing to overclock ths system and it should work asynchronous and everytime I try to boot with memory clock higher than 400 Mhz ths system boots normally but with the memory at 266Mhz. I've tried already lowering the HTT and CPU multiplier to make it work synchronous and it didn't work too. I'm using low latency at 2-2-2-5 at 400Mhz normally, but no more than it. None memory clock higher than 400Mhz were achieved here... My bios version is 1009.4 and I really would like to see my memory working at full capabilities as I expected when I bought it. Thanks for any help Link to comment Share on other sites More sharing options...
CMC_SAVAGE Posted October 23, 2005 Share Posted October 23, 2005 everytime I try to boot with memory clock higher than 400 Mhz ths system boots normally but with the memory at 266Mhz. Are these the "actual" frequencies or the BIOS settings. 400MHz would only be 200 in the BIOS. Link to comment Share on other sites More sharing options...
leeghoofd Posted October 23, 2005 Share Posted October 23, 2005 Well put the memory divider at DDR400 so it the memory will be run at 1:1 timings to use 2.5-3-3-8 for over 200mhz. 250mhz is not only depending on the ram, you have to take into account the CPU you are using, HTT settings, Ram voltage, CPU voltage,... ( I suggest 2.75 or even 2.8 volts for the ram ) Oc'ing is more than just upping the frequency, also you need to do it one step at a time and not boost the unburned cpu to speeds it wasn't foreseen to run at. Also you tend to use a beta bios which is used for the testers to see if it cures current probs. I had an A8V Mobo and from the bios release I used (1011 ) the voltages were screwed aswell as the memory dividers. (and they haven't solved those yet ! ) Link to comment Share on other sites More sharing options...
ecstuchi Posted October 24, 2005 Author Share Posted October 24, 2005 Sorry, but I test the memory with Sandra and other programs like CPU-Z and all detect the 266MHz. I have the option to select the memory at 533Mhz, but it don't work too. Before using the latest version which is beta, I was using the latest final version and I never had higher clocks with the memory. As I've read and my processor being a San Diego core, it should work with higher clock than 400Mhz as my memory also supports it. Thank for all help and I still waiting for a solution. Quote: everytime I try to boot with memory clock higher than 400 Mhz ths system boots normally but with the memory at 266Mhz. Are these the "actual" frequencies or the BIOS settings. 400MHz would only be 200 in the BIOS. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 24, 2005 Corsair Employees Share Posted October 24, 2005 The memory would need to be set to 2-1 or running at DDR 400 and you would have to over clock your CPU there is no other way that I know of. Link to comment Share on other sites More sharing options...
leeghoofd Posted October 25, 2005 Share Posted October 25, 2005 I wouldn't do that apparently it gives some probs. Why don't you try to run the memory first at DDR400 and see if it's stable. Go into CPU configuration menu - Dram Configuration : there you set Max memclock DDR400 1/2 timing : 1T Tcl : 2.5 Trcd : 3 Tras : 8 Trp : 3 Trc : 12 Trfc : 14 Twr : 3 Trwt : 3 Then go into Jumperfree configuration : Overclock profile : Manual CPU frequency : 200Mhz DDR voltage to 2.8 Reboot the pc normally it should run at DDR400 then and the CPU at 2400mhz. Try CPU-Z, Everest home and run superPi to check if it's stable. Then if you want to OC, you need to lower the HTT (Hyper transport Frequency) to 4X. You can run eg your memory at 245mhz (490Mhz) and use a 10 multiplier for the CPU so you are getting a 2450Mhz CPU ( so no big OC ) but the memory runs a lot faster then at stock 400mhz. This increases bandwith and the sytem will be bit faster but not pushed to it's limits, if you tend to go higher with the CPU you need to give it more voltage to eg 1.450 volts instead off 1.4 volts to get it running stable and try eg a 11 multi or evn the 12 foreseen but I get my 4000 SAn Diego max at 2640Mhz stable at 1.450 volts with Air cooling, I don't want to push it harder because I am scared of burning it. This speed makes it a FX55. But when you OC go in small steps and test the system to make sure it is stable. I will ask about these memory options to a friend on another forum he has the same mobo as you and is a big nutty Oc'er Link to comment Share on other sites More sharing options...
ecstuchi Posted October 25, 2005 Author Share Posted October 25, 2005 The memory would need to be set to 2-1 or running at DDR 400 and you would have to over clock your CPU there is no other way that I know of. Ok RAM GUY, say to me what to do and I promess I'll do everything to make my memory working at least at 500Mhz. Thank you for helping me :): Link to comment Share on other sites More sharing options...
ecstuchi Posted October 25, 2005 Author Share Posted October 25, 2005 Leeghoofd, I have already tried what you told me to do and the memory lows to 266 Mhz as i say... but the processor works at the expected speed. Thanks bro I wouldn't do that apparently it gives some probs. Why don't you try to run the memory first at DDR400 and see if it's stable. Go into CPU configuration menu - Dram Configuration : there you set Max memclock DDR400 1/2 timing : 1T Tcl : 2.5 Trcd : 3 Tras : 8 Trp : 3 Trc : 12 Trfc : 14 Twr : 3 Trwt : 3 Then go into Jumperfree configuration : Overclock profile : Manual CPU frequency : 200Mhz DDR voltage to 2.8 Reboot the pc normally it should run at DDR400 then and the CPU at 2400mhz. Try CPU-Z, Everest home and run superPi to check if it's stable. Then if you want to OC, you need to lower the HTT (Hyper transport Frequency) to 4X. You can run eg your memory at 245mhz (490Mhz) and use a 10 multiplier for the CPU so you are getting a 2450Mhz CPU ( so no big OC ) but the memory runs a lot faster then at stock 400mhz. This increases bandwith and the sytem will be bit faster but not pushed to it's limits, if you tend to go higher with the CPU you need to give it more voltage to eg 1.450 volts instead off 1.4 volts to get it running stable and try eg a 11 multi or evn the 12 foreseen but I get my 4000 SAn Diego max at 2640Mhz stable at 1.450 volts with Air cooling, I don't want to push it harder because I am scared of burning it. This speed makes it a FX55. But when you OC go in small steps and test the system to make sure it is stable. I will ask about these memory options to a friend on another forum he has the same mobo as you and is a big nutty Oc'er 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 How many modules do you have and if you only have 2 modules what slots do you have them in? and please list the exact bios settings you have set for both CPU and memory. Link to comment Share on other sites More sharing options...
ecstuchi Posted October 27, 2005 Author Share Posted October 27, 2005 How many module do you have and if you pnly have 2 modules what slots do you have them in? and please list the exact bios settings you have set for both CPU and memory. I have two modules, 2x 512Mb running now at DDR400 2-2-2-5 and 2,75V. They are installed in the slots 1 and 3, the blue slot color (as the manual instructed). I tried: memclock DDR500 1/2 timing : 1T Tcl : 2.5 Trcd : 3 Tras : 8 Trp : 3 Trc : 12 Trfc : 14 Twr : 3 Trwt : 3 Hypertransport at 3x or 4x. Then go into Jumperfree configuration : Overclock profile : Manual CPU frequency : 250Mhz DDR voltage to 2.8 CPU Multiplier : 10x CPU Voltage: 1,45V Cool & Quiet Disabled When I use this configuration, the memory goes to 266Mhz. :confused: Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 27, 2005 Corsair Employees Share Posted October 27, 2005 Memory clock should be set to DDR400! Link to comment Share on other sites More sharing options...
ecstuchi Posted October 27, 2005 Author Share Posted October 27, 2005 Memory clock should be set to DDR400! I'll try it as soon I get home. I'm at work now and I'll answers here whats happens. Thanks RAM GUY Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 27, 2005 Corsair Employees Share Posted October 27, 2005 By setting the memory clock at DDR500 you are actually setting a divider of 2.5 to 1 so if the CPU Freq is at 250 Mhz the memory would try to run at DDR625 Link to comment Share on other sites More sharing options...
ecstuchi Posted October 27, 2005 Author Share Posted October 27, 2005 By setting the memory clock at DDR500 you are actually setting a divider of 2.5 to 1 so if the CPY Freq is at 250 Mhz the memory would try to run at DDR625 The Memory really worked as you expected, at DDR500. CPU-Z and SiSandra Reports it. Another doubt I have is: Doing this overclock or not, with my 1/2 timing settings in bios is set at 1T, but always SiSandra detect It as 2T CMD and I don't understand why. Another consideration I have is that the memory performance benchmark is lower at 500Mhz than at 400Mhz with extreme low timings and just at 550Mhz it's better, but nothing near I'm used to read in websites as anandtech, which has the test with this memory. Thanks for all hep and I''m very glad with this support. I tried the Asus one and they did'nt answered my question which has three weekes already. :laughing: Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 28, 2005 Corsair Employees Share Posted October 28, 2005 With over clocking you have to look at over all system performance not just the memory performance. Link to comment Share on other sites More sharing options...
ecstuchi Posted October 28, 2005 Author Share Posted October 28, 2005 With over clocking you have to look at over all system performance not just the memory performance. But with higher memory clock I should have more bandwidth and at DDR500 it's lower than at DDR400 with lowest timings. At DDR400 my bandwidth with SiSandra test is around 5900Mb/s and at DDR500 it is around 5600Mb/s, while I read a test at anandtech and other hardware test webpages and the test shows the bandwidth around 6700Mb/s. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 28, 2005 Corsair Employees Share Posted October 28, 2005 Are you using the same test? And I would try Everest home edition its sometimes a bit more accurate. Link to comment Share on other sites More sharing options...
leeghoofd Posted October 28, 2005 Share Posted October 28, 2005 well they do a real OC then also with the CPU mate that's why they get higher scores the memory is effectively operating at the designated speeds not via dividers or assynchrous behaviour;If I OC my rig eg to 2600Mhz I get over 6000 too (only at 220mhz) so if I would go for 250mhz I would go much higher. But remember not all hardware Oc's the same way. Link to comment Share on other sites More sharing options...
ecstuchi Posted November 1, 2005 Author Share Posted November 1, 2005 Are you using the same test? And I would try Everest home edition its sometimes a bit more accurate. Where can I get Everest to try it? And I think SiSandra is reporting a near real memory performance bandwidth. I'm using the latest version and comparing with webpages like tomshardware and anandtech. My results are minimun strange. Link to comment Share on other sites More sharing options...
ecstuchi Posted November 1, 2005 Author Share Posted November 1, 2005 well they do a real OC then also with the CPU mate that's why they get higher scores the memory is effectively operating at the designated speeds not via dividers or assynchrous behaviour;If I OC my rig eg to 2600Mhz I get over 6000 too (only at 220mhz) so if I would go for 250mhz I would go much higher. But remember not all hardware Oc's the same way. I tried the OC, but I'm not using it. Even so my pc is crashing, the famous blue screens on Windows. What it the best timing configuration for all memory configs? Eu changed some of the memory configurations and it seems that it's not crashing anymore. Link to comment Share on other sites More sharing options...
leeghoofd Posted November 1, 2005 Share Posted November 1, 2005 glad can you share with us what you have changed ? evrest home link here : http://www.lavalys.com/products/overview.php?pid=1&lang=en SuperPi ( tests memory in WinXP ) link here : http://bakkap.free.fr/Softs/Superpi/Superpi_1.1_US.rar if it survives SuperPI 32m then it's very stable in case you get an error you need to sort out the timings my rig takes about 31 mins to complete it Link to comment Share on other sites More sharing options...
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