Could someone point me please into exact steps how to OC E4300 & GA-965P-S3?
I have Zalman 9700 cooler and Corsair XMS2 DDR2 800 memory.
I read that for 2.8 GHz I could do it with 667 memory but 800 2 x 1 GB sticks was on mail in refund $40 so only $5 more, thought I can maybe go 3 GHz with it so I bought that, hope it was not a mistake ...
What can I do with EVGA GeForce 7900GS - how to OC that?
Other than 3dMark2006 to measure speed, what tools and utilities should I use to stress test? Memtest? Motherboard environmentals?
The memory rating is how fast it can run, not how fast you're going to run it. Since you're setting manual settings, you will determine how fast you're running your memory. 667 4-4-4-12 and 800 5-5-5-15 both generally max out at about the same Mhz when the timings are set to 5-5-5-15 and the volts are turned up, depending on the specifics of the chip.
Remember that RAM speeds factor in the double data rate of memory, so with FSB of 333 and memory ratio of 1:1 you reach 667 for your memory. If you choose a FSB of 333 and a 'memory speed' of 667, most BIOSes will actually set the memory multiplier to 5:4, so your memory will be running at 333*5/4 = 416.25, or DDR833.
So, 333 with a memory ratio of 1:1 or 'memory speed' of DDR533 (which gives you a 1:1 FSB-Memory ratio) will run the RAM at 667.
Since you have DDR2-800 RAM, you go to an FSB of 400 with a 1:1 memory ratio without overclocking your RAM.
Don't leave the RAM settings on auto though, or the mobo will read the memory ratio off the RAM and try to set it to 3:2, which the RAM won't handle.
With that mobo you should be able to go past 400Mhz on the FSB pretty easily. You might try setting the FSB to 401 with memory ratio of 1:1 and stock volts just to see if it will run. If so, you'll have a nice budget 3.6 Ghz system.