Help me overclock

Your question is much too broad. System specs?

Search for "overclocking <processor>" and "overclocking <motherboard model>".

Go through the guides. THEN ask questions about what you do not understand.

Along with your budget constraints, this should all have been done before you ordered your parts.

As requested I organized my first post.
Why do you need specs? I need help in the software side , not the hardware.
but still:
E8500 cooled by OCZ Vendetta 2
XFX 9800GTX
Corsair XMS2 800mhz cl4 (2gb kit)
GA-EP35-DS3

Overclocking CPUs is all about hardware and not much about software. Only software you will need is CoreTemp to monitor your CPU temperature and Prime95 to stress test your system to make sure your OC is stable. Your overclocking is done in your motherboard's BIOS settings.

Overclocking memory is only necessary if you need a FSB faster than your memory is rated for. With that CPU that means you will only need to OC your memory if you intend to OC past 3.6Ghz. And your memory should OC itself automatically in your BIOS settings based on your FSB if you have it set for hte proper ratio. You will want to run Memtest if you OC your memory to make sure you memory is stable as well.

Overclocking your GPU means you will need RivaTuner to do the OCing and then use ATI Tool to make sure your OC is stable. And yes, ATI Tool works with nVidia cards.

deuce is right. With the exception of testing and monitoring software, overclocking IS about hardware. First piece of advice: do not use the Gigabyte Windows OC tool Easytune. Use the BIOS.

Programs like Orthos and Prime95 do two things - besides their original purpose - for overclocking. They maximize CPU load while doing complex math. That drives your core temps up and checks for stability at high temperatures and loads. If you have a dual core processor, Orthos is easier to use. Running Orthos automatically loads two cores. Prime95 has to be set up.

For Gigabyte motherboards, read this:
http://www.tomshardware.co.uk/foru [...] g-chipsets

See, specs help. Referring you to an AMD OC guide would have been pointless. But originally, we had no way of knowing.

Before you start, go into the BIOS and raise memory voltage to 2.2 volts. Then do one thing at a time. Get the CPU up to where you want it within the constraints of CPU voltage and temperatures. With a decent air cooler and a good (with respect to air flow) case, you shuld be able to reach 4 GHz.

Then fine tune memory. You will not see a lot of difference here. At 3.3 GHz (367 MHz FSB) on Box#1, dropping memory timing from the default 5-5-5-15-2T to 3-3-3-7-1T increased memory I/O about 7%. Sound likes a lot, but it made no practical difference in applications or games.

Take good notes. The Gigabyte BIOS will let you save multiple BIOS configurations - at least my EP35-DS3P does. [F11] saves and [F12] restores. Handy feature. The Gigabyte sytem is not listed below because it is still "a work in progress".

I keep a divided folder/pouch for each of my systems. Each contains system software, hardware manuals and driver disks, configuration notes, and a maintenance/upgrade log.

After all of that is stable, then OC the video card if you wish. My idea of "stable" is a good 24 hour Orthos or Prime95 run.

Build suggestion: before you install your parts in the case, breadboard the system first. That enables you to test the parts before you install them in a case.

If you do add a third fan I would suggest either the top of the case or if in the side then in line with the graphic card.

I'm sorry mate, my bad. I should have stated that the fan, if placed at the top or side, should exhaust the air from case. The general idea is to almost create negative pressure inside the case so that cooler air is drawn in, I have two fans on the side panel, one on the back and one on top all set as exhausts then one on the front set as an inlet.

Try a combination of ways and keep an eye on your temps and soon you'll find something that works for you.

So what are you saying exactly?