R8000 Desktop Build - Suggestions...

Overclocking is safe if you stick to stock voltages, about the worst thing you can do is damage the software installation on your PC from excessive blue-screening.

you can typically gain 20-30% from stock voltages, adding extra voltage typically would only get you an addition 10%, but at the risk of shortning the life of components.
 
Okay cool. How do I do this? Would like to get around 2.8Ghz. Specs in sig below.
 
^ first time I see a duplicate post a few hours from each other ^
 
ok, I assume you've never overclocked before...

I hope you are familiar with playing in the bois, spesifically how to reset it using the motherboard jumper if you make a mistake.

I'm not familiar with Gigabyte BIOS'es, but there are 3 main things to know in basic overclocking

1. CPU speed is determined by taking the FSB times the CPU multiplier.
Intel FSB speed is Quad channel so 200MHz is 800FSB.
Your board is rated for a 1333FSB, or 333Mhz, so you got lots of room to play with. your E5200 has a 12.5 multiplier. 200Mhz X 12.5 = 2.5Ghz

2. Memory speed is determined by a ratio divider to determine your RAM speed relative to your FSB speed. For best speed and stability, its best to keep this ration at 1:1 or 1:2. IE if you FSB is set to 333Mhz, its best to run your ram at 667Mhz for 1:1 (2x333 since its DDR) or at DDR800 if you run your PC at stock FSB of 800, thus giving you 1:2. There are lots of other Devider settings, but you should stick to those 2.

3. its highly unlikely that your CPU will run a the motherboard's 1333FSB at its full 12.5 multiplier (4.16Ghz), but the benefit of running the FSB at 1333 is, that we can run the ram at 667 giving the ideal 1:1 sync. What we do then is to reduce the multiplier on the CPU to something more sensible. Start by aiming at 3Ghz (9 multiplier). That should give you a speed boost without pushing temperatures too high. Most E5200's out the should be able to do that.

what you will need to find out is how to change settings for the above in your particular BIOS. Some other owners of that board might be able to help you out with specifics.

Here's the 3 steps:
1. set your FSB to 333Mhz (some bios would indicate it as 1333)
2. Set you ram speed to DDR2 667 (some bioses might refer to this as 333)
3. Set you Max CPU multiplier to 9.

save bios and reboot.

After that you need to do 2 things, keep an eye on the temps using a program like speedfan

run the CPU through a stress test for a few hours (I use Prime95)

What you are looking to avoid is:
1. Temperature of over 60C when stress testing. below that wont shorten the life of your CPU.
2. Prime 95 failing tests, or bluescreen reboots.

Should you find it to be stable, you can go into the bios and start increasing the multiplier slightly by 0.5 each time and running the tests again, until you find either of the above happening, then go back to the last value that was stable. If your temps get a bit high, you can get a after market cooler like a Zalman 9300 or 7500 Cooler.

Congratulations, you are now "sticking it to the man" and getting what Intel did not intend for you to get :)

I've been able to get 2 E5200's to a stable 3.5Ghz using a ASUS P5QL-E motherboards.
 
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Sapphiron said:
Here's the 3 steps:
1. set your FSB to 333Mhz (some bios would indicate it as 1333)
2. Set you ram speed to DDR2 667 (some bioses might refer to this as 333)
3. Set you Max CPU multiplier to 9.
Click to expand...

Thanks for advice.

When I set all of the above, there is a number below the ram speed which is something like 1300ish. It gets higher as you raise the FSB. It remains well over 800 which each of the ram speeds I select. ?
 
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okay let me try type out what i see.

CPU Clock Ratio 9x
Fine CPU Clock Ratio +0.5
CPU frequency 3.16ghz --value automatically changes with clock ratio & host freq
CPU Host freqency(Mhz) 333Mhz
System Memory Multiplier(SPD) 2.66 |3.33| 4.0+ | auto
Memory Frequency(Mhz) 889 |1111|1333 --value automatically changes with memory multiplier

Hope its clear.
 
ok, the System memory should be set even lower. "2" would be the optimal value, its the memory devider I mentioned in my original post

That gives us the 1:1 we are looking for.
 
Then it whips it up to 1333 Lol.
Couldn't I try a lower FSB?

For example:

10x
FSB 266Mhz
Memory Multi 2.66 (711)

2.80Ghz
 
Whoops, I should have checked your motherboard specs
http://www.gigabyte.com.tw/Products/Motherboard/Products_Spec.aspx?ProductID=2693

All Asus G31 chipsets boards I know of support 1333FSB, your Board only support 1066FSB, check if there is a bios update to fix that on your board.

So the best you can expect is to set the FSB to 266 (1066)
then you set the divider to whatever gives you the closest to DDR2-800

Then the CPU multiplier should be 11 to get you to 3Ghz.
 
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Tested it at:
10.5x
FSB 266Mhz
Memory Multi 2.66 (711)
2.80Ghz

Windows sees 3.33Ghz but cpuz sees 2793Mhz :)

Idle @ 28 degrees
 
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Changing the multiplier does confuses windows a bit.

Start increasing the multiplier by 0.5 increments now.
 
My first CPU OC. Im so proud :D

edit: exited after the cpu test, temp shot up to 37 deg...
 
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