dave_reap Posted October 19, 2009 Share Posted October 19, 2009 Hi, I am having what I can only describe as pretty horrific problems with my machine at home and it keeps coming back to the corsair memory as the problem. I have 8 gb... 2 matched pair sets of cm2x2048-8500c5d 4x2gb modules in my board. I have had problems for a while now so for the purposes of testing everything being ran at stock speeds now (except the ram voltage 2.1 ofc). Sometimes memtest is showing completely clean no errors whatsoever however at other times it is showing a ton of errors... soemthing is going wrong somewere... I have tried the following... individual testing of each stick same results.... Different Power supplys same results Different cpu / different gfx / all hard disks / dvd or any otgher device unplugged I have a single stick of 6400 stock at 1.8 volts and all seems to be well at the minute although I have no had time to give this a complete test but its been running orthos for 12 hours no without a hardware error which was showing on the dominator. Last night I tested 1 kit in my work machine which has a ga-ep31-ds3l with 2.1 volts for the memory stock settings everythign else... when i arrived this morn there was a ton of errors. Is it possible to return all 8 sticks for corsair to test / replace.. im really running out of ideas unless there is anything else you can add I need to try. Thanks David Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 19, 2009 Corsair Employees Share Posted October 19, 2009 With 4 modules I would suggest setting the memory frequency at DDR667 and set the memory Voltage to 2.1 Volts and set the NB/MCH/SPP Voltage to +.2 Volts as well and test the system with http://www.memtest.org. In addition, with some MB's (Mostly ASUS) you have to disable legacy USB in the bios when running any memory test. Link to comment Share on other sites More sharing options...
dave_reap Posted October 20, 2009 Author Share Posted October 20, 2009 i will try that, however I have tested 1 matched pair in a different board with errors showing @ 2.1volts stock.. ill post back tommorrow Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 20, 2009 Corsair Employees Share Posted October 20, 2009 Let's get them replaced, please use the On Line RMA Request Form and we will be happy to replace them. Link to comment Share on other sites More sharing options...
dave_reap Posted October 22, 2009 Author Share Posted October 22, 2009 ok now im even more stumped... though i think the ram might just be ok I have tested each matched pair in my board again.. both are coming back with 0 errors after 9-10 hours in memtest+ 4 @ 2.1 volts everything else stock. So I did what you suggested... all 8 modules back in again.. upped the mch to +0.2 and dropped the ram speed to 667.. I had the usb legacy support disabled already it ran memtest for 3 hours last night 0 errors... thats including the set i tested in another computer with 2.1 volts everything else stock that were showing errors (dont know what the hell was goin on there!.. board was a ga-ep31-ds3l) so i decided to up the ram back to default speed 1066 and keep everything else the same... i pushed the computer all night with orthos and ran memtest again this morning... came up with an error almost straight away... so atm I have it dropped back down to 667 to allow it to run all day while im at work so fingers crossed it will work. Is this a problem faced often with 8gb of ram that some baords just cant handle that ammount... I want to o/c my processor a bit to get more out of it but obviouslty the ram frequency will go up again. what i wanted to ask was you said increase mch/spp/nb to +0.2... are these different settings or simply one setting and called different things in different bios's (ie northbridge). In mine all I could find was mch... I will post later if it comes through the test today with +0.2 mch / 2.1 volts ram voltage and ddr frequency 667. I think your onto something with the ram not getting enough juice as the computer could be fine for days and then all of a sudden crash and memtest showing loads of errors... then fine again the next day. Cheers, Dave Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 22, 2009 Corsair Employees Share Posted October 22, 2009 The setting for NB/MCH in your case would be MCH Memory Controller Hub and that is what you are trying to do with this setting add more margin to the memory controller. There is more loading on the memory controller as you add more modules. And this is more of a chipset limitation than anything else but we do not test Twin sets of modules 4 up so it is hit and miss if they will run at full speed. Link to comment Share on other sites More sharing options...
dave_reap Posted October 22, 2009 Author Share Posted October 22, 2009 running at 667 had 1 error when i returned from work after 9 1/2 hours. I noticed when setting the frequency in the bios there are a number of different options setting it to 2.00 sets it to 667... but there are 4 different options... On the right it shows a correlating fsb for each option 2.00 A = 266 fsb 2.00 B = 333 fsb 2.00 C = 200 fsb 2.00 D = 400 fsb when i set it to 200 the computer will not even come on. 333 was the option I was testing it at the last few days... had 1 error after 9 hours of testing 266 shows errors straight away 400 I will be testing overnight Can anyone shed any light on what these settings are exactly? Should I try increasing the mch slightly more... from the look of some other websites it should go up substantialy more than what it is... it looks like its on the brink of being stable Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 23, 2009 Corsair Employees Share Posted October 23, 2009 2.00 A = 266 fsb 2.00 B = 333 fsb 2.00 C = 200 fsb 2.00 D = 400 fsb when i set it to 200 the computer will not even come on. 333 was the option I was testing it at the last few days... had 1 error after 9 hours of testing 266 shows errors straight away 400 I will be testing overnight Can anyone shed any light on what these settings are exactly? A: I would suggest asking the MB Maker to explain these settings to you. The Max memory Voltage should be 2.1 Volts and I would not add more then +.3 Volts to the NB/MCH Voltage maybe +.35. Link to comment Share on other sites More sharing options...
dave_reap Posted November 13, 2009 Author Share Posted November 13, 2009 Hi, I think I am begginning to shed some light on the problem... A while back I had a problem one of the sticks was faulty so I returned that kit see here: http://forum.corsair.com/v3/showthread.php?t=80220 During that post I specifically said I had 4 stick all of the same version... "I purchased these at the same time so i would have 4 sticks of identical ram. Is it possible to return all of the ram to receive parts which are matched closer together (ie the ram I have here is version 2.1 - i would imagine when its replaced i will have a later version number and then have 2 different kits)." to which you replied "We would only recommend to have the bad set replaced. =)" That was fine I returned the bad set got them replaced and didnt think anymore about it. However as you can see from the posts above ive had pretty horrible problems.. I have just noticed that the set that you replaced for me was not replaced with a like for like v2.1 but of a much older 1.2 version... which uses completely different ram chips. I purchased these together so i would avoid these problems and have all the same version of the ram. I have read numerous posts (including on this forum) with people using different versions having really bad problems. To say I am not happy with what has happened is an understatement I have spent months trying to figure out whats wrong with this thing. I would like you to issue me with an RMA so I can return these version 1.2 modules and you can replace them with version 2.1 modules, which is what should have been done in the first place. As posted in the other forum a friend has 8gb of 2.1 which has ran perfectly fine in my computer. Regards, David Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted November 13, 2009 Corsair Employees Share Posted November 13, 2009 David I am sorry but we do not officially support mixing memory and that is what you are doing to by running two sets of any twin set's even if they are the same version it is not supported. And the version number has no indication of the age of the product. It merely shows the IC we used to build the part. And IC availability is subject to change from week to week. With 4 modules I would suggest setting the memory frequency at DDR667 and set the memory Voltage to 2.1 Volts and set the NB/MCH/SPP Voltage to +.2 Volts as well and test the system with http://www.memtest.org. In addition, with some MB's (Mostly ASUS) you have to disable legacy USB in the bios when running any memory test. And I am sorry there is no way we can specify the version number for a memory order. You are welcome to contact our customer service and see if they can replace all of the modules but there is no guarantee they would all be the same version and even if they were we cannot guarantee full performance when mixing memory.Sorry! Link to comment Share on other sites More sharing options...
dave_reap Posted November 13, 2009 Author Share Posted November 13, 2009 The point is... I sent off version 2.1 to be replaced which were faulty... and then got version 1.2 back from you... All I am asking for is that you replace them with version 2.1 ... which is what you should have done for me in the first place... Now i am stuck with a matched pair of 2.1 and a matched pair of 1.2 which are just point blank refusing to work together! I am suprised with the corsair support on this, usually I use corsair to avoid things like this happening... And as per your reply above... I have tried and tested all available options... they will not even work together in 667. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted November 16, 2009 Corsair Employees Share Posted November 16, 2009 I am sorry but I have already answered that, you can contact our customer service and see if there anything they can do. But the version number is not something that can be specified. Link to comment Share on other sites More sharing options...
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