hgfla Posted September 25, 2007 Share Posted September 25, 2007 As a nice side bonus, the Qimonda ICs can run 1066 MHz at lower voltage, so the spec on the new version has been changed from 2.2V to 2.1V. Also, due to characteristics of the Qimonda ICs, running four modules at 1066 MHz is significantly less challenging on most boards. If you have any questions or comments, feel free to post in this thread and we’ll answer them as soon as possible. Thanks again. Additional DDR2 IC information can be found here: Congrats on the new chips. Are the validation settings at this link (reached via the link you supplied) still valid for for ex the TWIN2X2048-8500C5D G which is v 2.2? I'm having a bit of a time with my new set on a 680i striker ex. board and would like to try what you all used to validate these puppies. I tried the suggestion in another thread recommending setting SLI OC 0 and 2t and both 2.1 and 2.2V but flunk memtest in the second test, and fail over long term at DDR2-800 with 4-4-4-12 2t Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted September 25, 2007 Corsair Employees Share Posted September 25, 2007 We used the EVGA 680i or ASUS Striker Extreme to Validate the modules. And yes those settings still apply. Link to comment Share on other sites More sharing options...
hgfla Posted September 25, 2007 Author Share Posted September 25, 2007 And yes those settings still apply. Cool - I think I'm golden now. A setting I can't find in the Striker Extreme bios though is for the DDR2 termination votlage. Do you know if that's fixed on my 680i sli board or set under a parameter that's obscure? It seems I'm stable or close to it at 1066Mhz with my version 2.2 8500-C5D Gs Here's where I wound up- B1 & B2 for the sticks instead of A1 & A2 SLI memory set to expert 5-5-5-15 and 2t, other timing parms on the mem tuning screen to Auto DDR2 voltage 1.2 NB voltage 1.5 1.2 voltage at 1.25 SB voltage at 1.55 CPU VTT at 1.25 1333 FSB and mem clock linked 5:4 resulting in 1066.7 according to bios (other items: bios v1301, e6600 at 1.4925Vcore (set and measured externally) with pencil Vdroop mod, x9 yielding 3.0Ghz This motherboard runs very hot and the stock thermal compound supplied by asus seems dodgy. I popped the heat pipes off and re-compounded the NB and SB with arctic silver 5. I propped a 40mm fan on the NB and stuck the "dont use with air cooling" fan that came with the motherboard on the MOSFET heat sink by the rear case exhaust fan for about a 10 degree F drop in temps at both that and the NB heat sink. Thank you kindly for your quick response and for your help Dr. Memory Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted September 26, 2007 Corsair Employees Share Posted September 26, 2007 I would set the memory Voltage to 2.2 Volts and the CPU VCore should be 1.35 Volts if you have a 1333 FSB CPU. Link to comment Share on other sites More sharing options...
hgfla Posted September 26, 2007 Author Share Posted September 26, 2007 I would set the memory Voltage to 2.2 Volts and the CPU VCore should be 1.35 Volts if you have a 1333 FSB CPU. Yup that was a typo. memory is at 2.2. I'd love to drop Vcore down, perhaps I'll be able to now that the 1066mhz memory is stable with the new chipset parameters. Supposedly one can get 3.6Ghz out of these 1066mhz FSB E6600s at as little as 1.385v but I was having immediate instability with the gentle push to 1333mhz. Link to comment Share on other sites More sharing options...
hgfla Posted September 26, 2007 Author Share Posted September 26, 2007 I'd love to drop Vcore down, perhaps I'll be able to now that the 1066mhz memory is stable with the new chipset parameters. Supposedly one can get 3.6Ghz out of these 1066mhz FSB E6600s at as little as 1.385v but I was having immediate instability with the gentle push to 1333mhz. And indeed at far, far lower voltages the preliminary results are excellent. 1.5v almost immediately flunks orthos. Overnight 1.375 vcore orthos blended took a dump after four hours (this is with the B2 stepping E6600). Here's hoping that 1.3875 can make it through the day. Thanks for pointing out vcore. Re: alternate timings: Would 800Mhz and 4-4-4-12 1t be reasonable timings for these 8500 C5D Gs assuming long term stability at 1067mhz is confirmed? EDIT: Please disregard, looks like thread 62989 addresses this, and besides, the o/c forum is a more appropriate place for where I'm headed. Looks like Corsair landed another winner with the Qimonda version. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted September 26, 2007 Corsair Employees Share Posted September 26, 2007 I would suggest setting the command Rate to 2T with any Intel platform MB. Link to comment Share on other sites More sharing options...
DerekT Posted September 26, 2007 Share Posted September 26, 2007 Yup that was a typo. memory is at 2.2. I'd love to drop Vcore down, perhaps I'll be able to now that the 1066mhz memory is stable with the new chipset parameters. Supposedly one can get 3.6Ghz out of these 1066mhz FSB E6600s at as little as 1.385v but I was having immediate instability with the gentle push to 1333mhz. Once you find your memory stable, post in the Enthusiast section with regards to gaining a nice overclock and we can help you there if you want some higher numbers. I will be buying a set of the Qimonda DRAM this weekend to test out. I like the idea of lesser voltages for 1066. Link to comment Share on other sites More sharing options...
comlab Posted September 27, 2007 Share Posted September 27, 2007 Hi to all Perhaps this is off Topic but I have a important questions and hope you can help me. A few month ago I buyed the TWIN2X2048-8500C5D Memory. The specs said I have to run it on 2.2V. Now I planed to Upgrade my Computer to 4 GB RAM and ordered again this type of Memory. Today I got the package and I saw that I got the TWIN2X2048-8500C5D G V2.2 Memory and specs PDF says I have to run it on 2.1V??? I'm now confused:confused: The Problem is, it is not possible to buy the original Version of this memory in Switzerland anymore. My question now is: It's possible to run the old and the new Version of this Memory in the same System and on what voltage settings? 2.1V or 2.2V ??? I run the memory on 1066Mhz and with 5-5-5-15 2T. Thnx for your help, and greetings from Switzerland. comlab Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted September 27, 2007 Corsair Employees Share Posted September 27, 2007 With 4 modules I would suggest DDR800 at 2.1 Volts and let the MB set the timings and you should be fine. Link to comment Share on other sites More sharing options...
comlab Posted September 27, 2007 Share Posted September 27, 2007 Okay thank you for the quick answer. But if I woulk like to try to run at 1066Mhz which Voltage settings could I use not to harm the memory. Because my old TWIN2X2048-8500C5D Memory runs stable with 2.2V and 1066Mhz. Is it possilbe to run the newer TWIN2X2048-8500C5D G also with 2.2V? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted September 27, 2007 Corsair Employees Share Posted September 27, 2007 You are welcome to try anything you like, but I doubt you will be able to get 4 modules running at 1066 that are not matched. And I would suggest 2.1 Volts Max or you will void the warranty of the newer modules. Link to comment Share on other sites More sharing options...
comlab Posted September 28, 2007 Share Posted September 28, 2007 Mhhh:confused:If I understand you , there will be no chance to run memory TWIN2X2048-8500C5D G and TWIN2X2048-8500C5D together with 1066Mhz? And it's not possible to buy the old versions of the TWIN2X2048-8500C5D 2.2Voltage anymore. :(: The only thing I can do is to run my expensive 1066Mzh memory in 800Mzh because Corsair changed the Voltage on the new Revision. Not really fair! Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted September 28, 2007 Corsair Employees Share Posted September 28, 2007 No that is not quite right, even if they all matched I doubt they will run at 1066 with 4 modules but for sure if they are not matched they chances are less to reach that setting. I would suggest getting one of our Quad kits if you want 4 modules to run at the rated speed. However, even if you have a Quad Kit that is tested 4 up, some systems may not run at the tested settings depending on the configuration. Link to comment Share on other sites More sharing options...
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