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Old 08-11-2006, 04:15 PM   #1 (permalink)
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Default Want To Overclock 3800+ X2

I built my pc a while back and said I wasnt going to overclock it but I think I want to try atleast see what it will be like, speed/heat/ect. But I have a DFI mobo and I get so lost trying to follow tutorials on this site... links.

I dont understand exactly if Im supposed to change any voltage and how to also boost my memory since my cpu will be faster.

I gotta do somethign like this for my cpu?

MD64 3200+ s939 cpu default is:
HTT = 200mhz
Multiplier = 10x
Raw cpu speed = 10x 200mhz = 2000mhz
LDT = 5x
HTT Bus speed = 200mhz x 5 x 2 = 2000mhz

Well that was an example. I dont need a huge overclock just something that will stay under 40-50C. I run at exactly 32 IDLE, and about 35-40 when playing games alot. Dont want evertything to fry. I have a good heatsink a Typhoon if that means anything when it comes to overclocking.
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Old 08-11-2006, 04:18 PM   #2 (permalink)
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http://www.techist.com/showthread.php?threadid=59883
answers it all....
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Old 08-11-2006, 04:38 PM   #3 (permalink)
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eh i already looked at that, but I didnt understand wut the voltage should be and what my mem clocking should be compared to the cpu clocking.
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Old 08-11-2006, 04:56 PM   #4 (permalink)
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ehh it wont let me go past 10x im confused
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Old 08-11-2006, 05:05 PM   #5 (permalink)
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Quote:
Originally posted by xXx-Tricky-xXx
ehh it wont let me go past 10x im confused
Obviously you DIDN'T read it.
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Old 08-11-2006, 05:24 PM   #6 (permalink)
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multiplier is locked.. you can't change that to go up.. only down

and you have to raise your fsb/htt, whichever your motherboard calls it.. but in order to do that its also going to raise your rams speed, so you may have to run a divider based on your ram
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Old 08-11-2006, 05:41 PM   #7 (permalink)
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i did read it but i said i didnt understand any of it, my old amd 2500 was easy to oc, ill just forget ocing i dont get it.
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Old 08-12-2006, 08:02 PM   #8 (permalink)
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Maximum CPU speed:
First off you want to find the highest your CPU can actually go without the ram interfering. To do so you have to set the ram to the lowest possible speed, which is 100MHz or 200MHz as opposed to 200MHz and 400MHz effective. You might be thinking to yourself what does this have to do with anything? Well it has a lot to do with everything. Your ram is rated to run at 200MHz or 400MHz effective and it runs at a 1:1 with your CPU's HTT. This means that every time your raise the HTT frequency the ram frequency goes up. For example if everything is running at stock speeds (200:200) and you put the HTT up say 5MHz to 205 the ram follows at 205. The ram usually maxes out before the CPU ( in general, but there are exceptions) and this is why you set it to the lowest. The objective of this is to have the most efficient overclock possible. Say your CPU's HTT can go up to 265 but your ram maxes out at 245, you miss that much of an overclock. So now with the ram running at 100MHz and the HTT running at 200MHz you can put the HTT frequency all the way up to 300MHz knowing that whenever it crashes or doesn’t post it’s your CPU and not your ram.

HT Frequency:
So to overclock your CPU you raise the HTT frequency slowly in 1-5MHz increments and adjust the voltage accordingly. You also have to adjust your HT frequency. You calculate the HT frequency by multiplying the HT frequency by the HTT frequency. You want to keep it as close as possible to 1000. At stock, 5 X 200 = 1000. You usually have a little bit a leeway like 1100 but not much more.

Maximum RAM speed:
So now that you’ve found your max CPU speed you want to find out just how far your ram goes. Let’s say your CPU’s HTT maxed out at 270. We now know that, so let’s start overclocking with the ram at 200MHz. Again do it in only 1-5MHz adjusting the ram voltage accordingly. Adjust everything that has to do with the CPU like you did before. For example you had to raise the voltage to 1.425V when the HTT hit 230. You do that until you have found your max ram STABLE ram speed. So let’s say your ram maxes out at 235MHz but your CPU’s HTT can go all the way up to 270. What do you do now? You use a ram divider.

RAM Divider:
A ram divider is simple. It run’s your ram at a slower speed just like we did at the beginning. So now at this point setting the ram at 166MHz would be your best bet. So now the ram is running at 166MHz and your HTT is at 200MHz. So when you put your HTT frequency at 205 your ram will be running at 171MHz. So now when you set your HTT at 269 your ram will run at 235MHz. That is the most efficient overclock you can get.

Cooling:
Cooling is very important. The new "Venice" and "Sandiego" cores run very cool. They can reach impressive speeds with stock cooling. With better cooling you can achieve higher speeds with more stability. The lifetime on a CPU today is something ridiculous like 1 million hours. Overclocking your CPU does decrease the life span of it but not significantly so there's really nothing to worry about.

Stability testing:
Stability is the most important part of overclocking. You don’t want to be using your computer when you’re doing something important and then it just restarts or crashes because it’s unstable. There are a few programs on the net that can test the CPU’s stability for you. My favorite is a program called “Prime95”. The best type of test you can run would be the blend test. This tests all the components that have been overclocked. With a dual-core CPU it’s just a little bit more complicated because you have to test two cores. In order to do this, find prime95 and open it, then go to “run” in the start menu and browse to where prime95 is. When you find it click open and then type “_A-1”. The underscore represents a space. So after you do that it should look like this: “D:\Stuff\Computer\Prime95\PRIME95.EXE -A1” with no quotes obviously. Go to Advanced in one window and click on affinity, make sure that one is set to either 1 or 0 and in the other prime95 window make sure that is set to the opposite. So the first prime95 window is running on CPU 0 and the second one is running on CPU 1.
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Old 08-12-2006, 09:17 PM   #9 (permalink)
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Greetings,

Check my sig.

Here are the raw numbers I used.

Multiplier (locked) = x 10
CPU Frequency = 250
Vcore = 1.44V
Memory Clk = Auto

This yielded results similar to what is in my sig.

All of the settings will be found in the "Advanced" tab of the BIOS

A High Performance HSF (Heat Sink Fan) is generally recommended, though there are individuals that achieve impressive numbers with stock cooling.

NOTE: Do Not go straight to 250/1.44V. Increase in increments of 5 (205...210...215, etc.) and .005 V (1.375....1.380....1.385) TEST after each increase, adn check the results of the CPU and the RAM with a utility called CPUz (free download).
Once you start getting up past 230 you might want to run Prime95 on both cores for 12 hours to ensure stability. In order to put a load on both cores follow these instructions, though you might want to familiarize yourself with Prime95 first.

http://www.dfi-street.com/forum/showthread.php?t=16446

Overclocking is a RISK! Make no mistake, like gambling do not put more on the line than you can lose.

Patience is paramount. Oc'ing safely can be a time-consuming task, but stable results are worth the effort.

Also, you might want to stay away from .5 increments in the Multilplier; a moot point if you are staying at x 10

I hope that this helps.
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