mr.morton Posted February 18, 2009 Share Posted February 18, 2009 Hi! I have a Asus P5W DH Deluxe, and running Kalyway 10.5.4 - when I installed I had 667 mhz ram. Now I bought 8gb (4X2gb) DDR2 PC-6400 ram, the main reason for buying PC-6400 was 800 mhz. I selected 800 mhz in BIOS, but osx still says they er running at 667 mhz - do I have to reinstall osx ? Anybody tried something like this ? HELP I want 800mhz! Link to comment https://www.insanelymac.com/forum/topic/153707-800-mhz-ram-running-at-667-mhz/ Share on other sites More sharing options...
mr.morton Posted February 19, 2009 Author Share Posted February 19, 2009 Anybody got 800 mhz running at all? Link to comment https://www.insanelymac.com/forum/topic/153707-800-mhz-ram-running-at-667-mhz/#findComment-1085175 Share on other sites More sharing options...
josephien Posted February 19, 2009 Share Posted February 19, 2009 well, the first thing i should do is see in windows if it works at 800mhz to be sure it's not hardware related greetz Link to comment https://www.insanelymac.com/forum/topic/153707-800-mhz-ram-running-at-667-mhz/#findComment-1085626 Share on other sites More sharing options...
mr.morton Posted February 19, 2009 Author Share Posted February 19, 2009 well, the first thing i should do is see in windows if it works at 800mhz to be sure it's not hardware related greetz Don't own a windows license - only OSX... Any other way to check it? Link to comment https://www.insanelymac.com/forum/topic/153707-800-mhz-ram-running-at-667-mhz/#findComment-1085909 Share on other sites More sharing options...
MacUser2525 Posted February 19, 2009 Share Posted February 19, 2009 Don't own a windows license - only OSX... Any other way to check it? What you are seeing can just be a cosmetic issue sometimes OS X does not display the correct values especially if you are looking at the About This Mac screen. What I would do is look at the next screen that comes up when you go for more info in particular the Bus Speed reading, if it is correct for the chip you have then most likely everything else is getting used at their proper speeds as well. Link to comment https://www.insanelymac.com/forum/topic/153707-800-mhz-ram-running-at-667-mhz/#findComment-1085964 Share on other sites More sharing options...
mr.morton Posted February 19, 2009 Author Share Posted February 19, 2009 Yeah - looks like it is running 667 mhz.... :-( Link to comment https://www.insanelymac.com/forum/topic/153707-800-mhz-ram-running-at-667-mhz/#findComment-1085968 Share on other sites More sharing options...
MacUser2525 Posted February 19, 2009 Share Posted February 19, 2009 Not there the very next screen when you press the more info you will see the bus speed listed along with the machine model, serial number.... Link to comment https://www.insanelymac.com/forum/topic/153707-800-mhz-ram-running-at-667-mhz/#findComment-1085974 Share on other sites More sharing options...
mr.morton Posted February 20, 2009 Author Share Posted February 20, 2009 This... Link to comment https://www.insanelymac.com/forum/topic/153707-800-mhz-ram-running-at-667-mhz/#findComment-1086007 Share on other sites More sharing options...
kulos Posted February 20, 2009 Share Posted February 20, 2009 This... My hackintosh reports 800 regardless of real speed. Fine with me as 800 is correct. Other than that I have the same bus speed and cpu speed as you have (GA-EP35-DS4 mobo). This cosmetic issue can be corrected by a parameter in the com.apple.Boot.plist file depending on the AppleSMBIOS variant you use. Test the AppleSMBIOSEFI.kext (alongside the original AppleSMBIOS.kext) which wont be overwritten by software updates. kulos Link to comment https://www.insanelymac.com/forum/topic/153707-800-mhz-ram-running-at-667-mhz/#findComment-1086025 Share on other sites More sharing options...
MacUser2525 Posted February 20, 2009 Share Posted February 20, 2009 This... Yep and if you have a chip that runs at 266mhz FSB then that speed shown is correct so your bus would be running at the correct speed. The multiplier you have set in your BIOS should be being used unless you have a quirky board/BIOS when running the 4 ram chips together which sometimes happens but I doubt it here. You can have it display properly for the cosmetic idea by using either the AppleSMBIOSEFI.kext or the chameleonsm then you would need a couple of lines in your com.apple.Boot.plist to tell it the correct settings for display. Edit: Oops someone beat me too it.. Link to comment https://www.insanelymac.com/forum/topic/153707-800-mhz-ram-running-at-667-mhz/#findComment-1086026 Share on other sites More sharing options...
kulos Posted February 20, 2009 Share Posted February 20, 2009 Edit: Oops someone beat me too it.. Sorry Link to comment https://www.insanelymac.com/forum/topic/153707-800-mhz-ram-running-at-667-mhz/#findComment-1086073 Share on other sites More sharing options...
mr.morton Posted February 20, 2009 Author Share Posted February 20, 2009 well if it is just cosmetic then I don't think I will bother. Can I run a benchmark that will indicate what speed they are running? Link to comment https://www.insanelymac.com/forum/topic/153707-800-mhz-ram-running-at-667-mhz/#findComment-1086109 Share on other sites More sharing options...
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