LazaHorse Posted November 7, 2012 Share Posted November 7, 2012 I recently bought 16 GB worth of the same RAM I was using before (8 GB initially) for a total of 24 GB. It wasn't running all 24 GB properly (the 8GB in the DDR slots 3 and 4 were being run as Hardware Reserved RAM), so I removed the 8 GB RAM sticks. However, now whenever I start my computer, the sticks are clocked at 1333 instead of their native 1866. I have a Gigabyte Z68X-UD3H-B3 (rev. 1.0) mobo and a Sandy Bridge i5-2500k CPU. When I manually set the RAM back to XMP with an automatically chosen speed of 1866 and attempt to reboot, the computer powers down after a second of trying to boot back up, and then reboots with default CMOS settings (speed back down to 1333). It then gives me an error message in the Bios that says: "The system has experienced boot failures because of overclocking or changes in voltages. Last settings in BIOS setup may not coincide with current H/W states." Any idea why the motherboard won't let me run the RAM at their native speeds? I know the mobo can run the speeds because as I said before I was using the exact same RAM for over a year without any problem (just 8 GB total instead of 16). I ran prime95 for 10 cycles and didn't get a single error, so I don't think the RAM is the problem. Help me out? Real. Quote Link to comment Share on other sites More sharing options...
enigma# Posted November 7, 2012 Share Posted November 7, 2012 Make and Model of the RAM? Quote Link to comment Share on other sites More sharing options...
Guest teh_g Posted November 7, 2012 Share Posted November 7, 2012 Does the motherboard/CPU support the higher speed on the RAM? Quote Link to comment Share on other sites More sharing options...
LazaHorse Posted November 7, 2012 Author Share Posted November 7, 2012 My RAM is: http://www.newegg.com/Product/Product.aspx?Item=N82E16820233281&nm_mc=KNC-GoogleAdwords&cm_mmc=KNC-GoogleAdwords-_-pla-_-NA-_-NA And yes the MOBO can run the speed at 1866. It also says it can support up to 32 GB of RAM with 64-bit Windows (I have win7 64bit). The change amounts to little more than upgrading from 8 to 16 GB (same model sticks with higher memory), but now the speed won't stay at native 1866. Attached picture is the error message I get when I try to turn XMP on to force speed of the RAM to 1866 MHz. It fails to boot after 2 seconds, reboots with the RAM back at 1333, and gives me this error. In other news, the sound card I won from HG a while ago works now. -.- Real. Quote Link to comment Share on other sites More sharing options...
Mr.Tin Posted November 7, 2012 Share Posted November 7, 2012 In other news, the sound card I won from HG a while ago works now. -.- sound cards so viable! Quote Link to comment Share on other sites More sharing options...
enigma# Posted November 7, 2012 Share Posted November 7, 2012 It's a dual channel set up right? Okay: try this set up in BIOS, your ram should be set at 1.5V, XMP @ 1866 However, the physical setup in the mobo itself should be setup as From left to right: 0 1 2 3 ¯¯¯¯¯¯ 8 4 8 4 4 8 4 8 ______ The first setup you should try just 8 B 8 B (B = missing or no RAM installed in the slot). The second time try: 4 B 4 B Motherboards can be very picky at times. I wouldn't be surprised if it was bad RAM however like you said, you've tested it enough so I'll take that as a yes that it is not fault. Quote Link to comment Share on other sites More sharing options...
LazaHorse Posted November 7, 2012 Author Share Posted November 7, 2012 (edited) It's a dual channel set up right?Okay: try this set up in BIOS, your ram should be set at 1.5V, XMP @ 1866 However, the physical setup in the mobo itself should be setup as From left to right: 0 1 2 3 ¯¯¯¯¯¯ 8 4 8 4 4 8 4 8 ______ The first setup you should try just 8 B 8 B (B = missing or no RAM installed in the slot). The second time try: 4 B 4 B Motherboards can be very picky at times. I wouldn't be surprised if it was bad RAM however like you said, you've tested it enough so I'll take that as a yes that it is not fault. When I get home later this evening I'll try playing with the RAM slots and see if it's just being picky with the RAM in each. Also, I read online of someone with the same mobo bending some pins in the RAM slots, and that leading to the same problem. I'm gonna look and see if any of the pins are misaligned/bent. Real. Edited November 8, 2012 by LazaHorse Quote Link to comment Share on other sites More sharing options...
LazaHorse Posted November 8, 2012 Author Share Posted November 8, 2012 (edited) So after testing, both 8B8B and B8B8 do not boot properly at 1866 MHz. They reboot at 1333 and give that error. On the other hand both 4B4B and B4B4 work properly (boot at 1866 speed). Real. Edited November 8, 2012 by LazaHorse Quote Link to comment Share on other sites More sharing options...
enigma# Posted November 8, 2012 Share Posted November 8, 2012 test your 8 gig modules Quote Link to comment Share on other sites More sharing options...
LazaHorse Posted November 8, 2012 Author Share Posted November 8, 2012 (edited) I tested them individually, same error. I think it's just not gonna work with my mobo. I think the 8GB sticks are just asking for too much voltage to run at the native speed, and my mobo won't give it to them. I'd rather have 8GB @ 1866 than 16GB @ 1333 anyway. I'll probably return the 8GB sticks and buy two new 4GB (same exact ram) so I can just run a 4x4 16GB memory setup. Real. Edited November 8, 2012 by LazaHorse Quote Link to comment Share on other sites More sharing options...
enigma# Posted November 8, 2012 Share Posted November 8, 2012 I did check the QVL for your mobo, it wasn't on it but I'm surprised it doesn't work. I've read that it is possible to have 8 GB/channel running Quote Link to comment Share on other sites More sharing options...
LazaHorse Posted November 8, 2012 Author Share Posted November 8, 2012 I did check the QVL for your mobo, it wasn't on it but I'm surprised it doesn't work. I've read that it is possible to have 8 GB/channel running Yeah neither stick is on the QVL, but the 4GB kit definitely is compatible. The QVL lacks higher capacity RAM kits. Real. Quote Link to comment Share on other sites More sharing options...
Guest teh_g Posted November 8, 2012 Share Posted November 8, 2012 If you are worried about voltage, could you increment up the voltage? Quote Link to comment Share on other sites More sharing options...
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