Ram runs at 800MHZ but...

[bushwickbill]

This post in a update to my earlier post of my ram not running above 667Mhz. I have Four 1 GB sticks of Kingston KVR667D2N5/1g in my rig. I was having problems trying to get my Ram to Overclock. I kept hearing the same thing,"Having Four 1 GB sticks will not Overclcok as easy as having just two 1 GB sticks of DDR2 667Mhz." Someone on another site suggested I put my Cpu back to stock speeds and try running my ram at a 2:3 upclock divider. So I did. Cpu at 2.13 Ghz, Ram at 800Mhz,5,6,6,18 2.1 volts. So now with this new info it is clear that My four 1 GB sticks of DDR2 667 Kingston Value Ram can run together at 800Mhz. I ran Three apps of memtest, one test 1024, one test 1024, one test at 510. That seems to be all the Ram Win XP 32 bit can "SEE". It ran to over 100% coverage on all test without errors. Well that brings a small smile. At least I know now that All four Sticks of Ram "Get along" at 800Mhz. Well were do I go from here. I have been testing things out since finding this info out. I can get my CPU to run at 2.8Ghz v.core 1.25, Ram at 700Mhz 5,6,6,18 2.1 volts. I tried to get to post at 2.81Ghz and no go. I don't know what else to adjust. I upped the CPU Volt to 1.35 and still no luck. So please guys, There has to be a way to get this Rig to run at least to 3.0Ghz. I haven't upped the North Bridge yet cause I can't locate it. So some advice would be great on where is the NB volts are, as well as anything else I could try to get up to 3.0 Ghz. Thanx

[sswilson]

Wish I could help, but I'm not familiar with the motherboard.... if nobody steps forward with some first hand info, I'll do some digging later this weekend and see what I can come up with for you.

[cadaveca]

Problem is that when the cpu speed is higher, your ram gets a bigger beating from the cpu than if it was mated with a slower cpu(bandwidth increases as cpu speed increases with Core2)


So, although your ram may run at stock cpu, it might NOT run with overclocked cpu.


BTW, one pass of windows memtest is not accurate. it does not cover the ram that windows is actively using. It's best to use a DOS-based app or something, or memtestx86+. However, even with all ram available to memtestx86+, besides a couple hundred kb, memtest in itself is not wholely accurate either. I can get ram to pass memtest, but will fail prime95 blend...

[Eldonko]

Test to 1000% coverage with HCI memtest.