thlayli wrote:
Thanks for the reply. That doesn't account for the same behavior happening with http://www.gskill.com/en/product/f3-10666cl9q-16gbxl" rel="nofollow - http://www.gskill.com/en/product/f3-10666cl9q-16gbxl - which IS on the QVL.The IMC is crap on the AMD's, I know. Originally my goal was to hit CPUNB of 2800 and 1866 with the RAM. I'd been at 2600/1866 and running fine for the most part. It takes CPU/NB of 1.4V for me to do 2600. That's worried me since it would seem everyone else on the internet only needs +/- 1.3V to hit that speed. On a whim last night, I put the 2400 TridentX back in and loaded the 2600/1866 UEFI config that was known-good, that I spent forever dialing in. I know I'd done this already, but here I am, PC not shutting off when I open a browser or video game. Temperamental beasts. As for WHY I thought they'd be compatible, in my 30 years I'd never known RAM to be exclusive to a chipset/IMC. Sure, it may have said "Optimized for Z97" on it, but all I really cared was the top speed of the RAM was 2400, and the top speed of the Mobo was 2400. This was supposed to be a build that would last me a good while. I'm just happy it's not shutting off at this point. | thlayli, firstly, what exactly is your problem with this MB/RAM combo? Your system suddenly shuts off or does not shut down? I don't see through this. Secondly, where in the QVL of this board do you find your memory? I can't. http://asrock.com/mb/AMD/Fatal1ty%20990FX%20Killer/index.asp?cat=Memory&Model=Fatal1ty" rel="nofollow - http://asrock.com/mb/AMD/Fatal1ty%20990FX%20Killer/index.asp?cat=Memory&Model=Fatal1ty
There are so many types of memory modules, just one letter different, it is another product! Those brands buy a cheap bunch of chips, opt them for high speeds on whatever CPU/board combo while testing is second priority - AMD is highly possible not testet much, thanks to small maket share. I'm not a friend of these passing fad memory kits anyway, so hip and hype with their funky heat spreaders, not knowing which memory chips are beneath. I recommend regular "OEM" modules from Kingston ValueRAM, Samsung, Crucial (Micron) and so on. These are testet for widespread compatibility and availability is given much longer. Higher memory speeds on AMD FX CPUs than 1866 are negligible performance wise. Even 2133 is fine for me, as CPU-NB doesn't need to be touched. But 2400 (or above 2200) is just not worth any tuning. Same for CPU-NB. The FM2+ APUs and good old Phenom II is a different case. Better invest your TDP / temperature margin in CPU core clock OC rather than the CPU-NB. Thirdly, have you tried to run your memory without OC'ing anything? AMD's memory controller is NOT crap if you leave it alone (at 2200 MHz)! Set NB to 2400 MHz, to make DDR3-2400 possible, can be a sheer pain. And OC'ing the CPU-NB on AMD can make Windows fuzzy. For instance, graphics anomalies, suddenly disabled Aero mode and Internet Explorer not showing a thing except white background. It may even be prime-stable, but not necessarily in reality!
OC is never guaranteed to be stable and if people think their NB OC is stable at 1.3V, it may or may not be. Often people just think their system is stable, but it isn't at all. Just because you were lucky the past 30 years, it doesn't mean you ran into a compatibility issue here. 20 years ago, there were much viewer kits available, with nearly no "OC sticker" on them. It is far more complicated these days. And for the specific modules for a specific system, I remind of the AMD optimized OCZ modules in DDR2 times. Even they were problematic on some boards that comprised an AMD CPU. Of corse it is never a good idea to make modules for a specific system - quoting OCZ support - i have good experience with Radeon RAM. At least they are optimized for AMD's memory controller, but it is still board dependend!
------------- PC1: FX-9590@def|290 |16GB@2133|Sabertooth 990FX R2.0 PC2: FX-8320@4.5|290 |16GB@2133| " PC3: FX-9590@def|280X|16GB@2133| " PC4: FX-9370@def|280X|16GB@2133| " PC5: FX-6300@4.6|7950|16GB@1866|990FX-UD3
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