Okay...the first thing you are going to need to do is download some programs...start with:
And also install nTune, it should be on your motherboard driver disk.
Okay...after you download all of that restart your computer and go into the BIOS (press delete when your computer posts). When your in the BIOS you're going to want to find the max fsb of your components, let's do your motherboard first.
Before we do any overclocking, go into your BIOS and go to the Advanced tab, then go down to Jumperfree Configuration. Find PCI Express Clock and set it to 100, and then find PCI Clock Synchronization Mode and put it at 33.33 mhz.
Now were ready to start overclocking, go to the advanced tab then down to jumperfree configuration and find the CPU Multiplier. Lower that down to 5-6. Then go back and to the advanced tab and go to CPU Configuration > DRAM Configuration and lower the memclock index value down to the lowest setting. Then go back to the jumperfree configuration and raise the CPU frequency at intervals of 10-15 until it fails to boot, once it fails to boot go back into the BIOS and to the jumperfree config, then raise the chipset voltage. Do this until you hit a wall, then write down the last number that worked, this is your motherboard's max fsb.
Now to find your RAM's max speed. Go into the BIOS and then go into the CPU configuration > DRAM configuration again. Raise the memclock index value back up to 400. Then make sure your timings are at stock. For that RAM your timings should be...Cas Latency at 2, tRCD should be at 3, tRP should be at 2, tRAS should be at 6, and the timing mode should be at 1t. Now go back to your jumperfree configuration and make sure the multiplier is still at 5-6. And lower the CPU frequency down to 200. Then raise it up in intervals of 4-5 until it fails to boot, then raise the RAM voltage until you can boot, and keep doing that until you've hit a wall. You probably won't want ot go over 3.0v at the most though. Your ram is rated to hit 218 mhz at those timings, so you should be able to go to at least there, probably to 220. Once you've hit your wall lower the CPU frequency until your computer boots, then run memtest86 and if it fails lower the FSB 1-2 mhz until you past memtest. Once you get your highest speed that passes memtest right it down, that is your RAM's max speed at the stock timings.
Now time to overclock your CPU. Go back into the BIOS and go into the jumperfree configuration. Lower the CPU frequency back down to 200 and the multiplier up to 11. Raise the FSB in increments of 5-10 until it doesn't boot. Then raise your CPU voltage up to around 1.35v. Keep on repeating the proccess until you've hit a wall...your motherboard shouldn't let you raise your CPU voltage to more than 1.5v.
NOTE: Once you raise your CPU frequency past your RAM's max speed your RAM could cause you problems. You can either go into the DRAM configuration and loosen (raise) your Cas latency to 2.5 or set your DRAM frequency to the next lowest choice. Also note, that on the CPU configuration page in the BIOS there should be something called Hyper Transport Frequency. When your FSB is between 200-250 set it to 4. When your FSB is between 250-333 set it 3.
Okay...so once you hit a wall with your processor go into Windows and open nTune and go to system monitor. Keep an eye on your temps, make sure your CPU doesn't go above 50*, if it does you need to lower vVore which will probably slightly inhibit your overclock. Since you have the A8N-SLi premium with the heatpipe, your system temp should not be a problem. So once you have nTune's system monitor up run two instances of Prime95.
In order to run two instances of Prime95 you either need to run them with the suffix -a1 and -a2. Or have two folders each with Prime95 in it. If you want to the first thing, copy the location of your Prime95 file and paste it into Start > Run, then add quotations around it and outside the quotations right -a1 for the first instance and -a2 for the second instance.
Like this: "C:\\Documents and Settings\\Christoph\\My Documents\\Downloads\\Overclocking Downloads\\p95v2414\\prime95.exe" -a1
Once you have two Prime95s up go to Advanced > Affinity and set one of them to core 0 and the other one to core 1. Then go to Option > Torture Test > In-place large FFTs. If you want to make sure both of them are running right, go into Windows task manager and go to the performance tab, if they are both running CPU usage should be at a steady 100%. In order to call this a stable overclock, you need to be able to run dual Prime95 for 8+ hours. If either/both of the cores fail, you need to go back into the BIOS and either lower the FSB or raise the CPU voltage. While Prime95 is runnings, also be sure to monitor your CPU temps and make sure they stay under 50*. With that CPU and watercooling, your should be able to hit 2.6 ghz.
Now time to overclock your graphics cards. Run the coolbits registry edit. Then right click on the desktop and click nvidia display there should be an option on the side panel that says "Clock Frequency Settings". Click that then click manual overclocking, and you can raise the core/memory speeds until the test fails, or you can have it detect the optimal frequencies for you. Normally you are able to go higher than what they detect as the optimal frequencies. After you set your speeds run some graphics intense applications such as 3DMark05/06, BF2, or HL2:LC and see if there are any artifacts. In case you don't know what artifacts are, they appear when your graphics card incorrectly loads a texture and your normally will see little lines or random looking things in the game. If you're not sure about doing that, you can always download ATITool and run there artifact scanner and that should tell you if your card is stable or not. BTW...you do not need an ATI card to use their artifact scanner.
Have fun with your new faster, overclock system. If you need any help with anything just ask me or any of the other wonderful members at this forum. And if you don't get stuff just remember, overclocking like anything else takes practice.