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Old 06-03-2005, 01:32 PM   #1 (permalink)
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Default Socket 939 overclocking

what are the main differences between overclocking ina socket 939 board and my *vast* experience with socket A? how does the HTT affect the whole process? how much voltage should i pump to the HTT? and the venice core can go down in the multiplier but not up, correct? if anyone has good experience with this please share... i was quite proficient with my socket A, and in theory this should be quite similiar, correct? if not then please help
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Old 06-03-2005, 01:50 PM   #2 (permalink)
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I have a socket 939 mobo and CPU, so I'll tell you what I do know about this. You could probably search tech-forums, but being as I have nothing else to do right now, here we go:

First off, yes, the multiplier can only go down and not up. I have an AMD Athlon 64 3000+ with a stock speed of 1.8 GHz. The FSB stock speed is 200 MHz. When you overclock you'll want to raise the FSB (I don't know what you do for socket A because I've only overclocked with a socket 939). As you raise the FSB, you want to be positive to keep the HT frequency multiplier so that the FSB x Multi = 1000 or under. If you exceed 1000, you will not be able to boot up. At 200, it should be at 5x by default. As you go up, switch it to 4x until you get to 250, then 3x from there up.

Also, when you raise the FSB, you'll also be raising the RAM speed. You can either try to get as much out of your RAM as possible, or use seperators. If you go into the RAM screen, it should give you these choices: 200, 166, 133, 100. These are proportional to a 200 FSB when determining how the RAM functions so... 200 = a 1:1 ratio, 166 = 5:6 ratio, 133 = 2:3 ratio, and 100 = 1:2 ratio. The goal is to try and get the RAM to work at a 1:1 ratio so there is no bottlenecking, but sometimes you cannot do this when overclocking your system to its maximum point. Sometimes you'll need to adjust your ratio so that your FSB will function at (for example) 270 MHz, and your RAM at 225 MHz (5:6 ratio).

Another thing is that you must lock your AGP frequency. On my motherboard there is a seperate setting to adjust AGP frequency, but many work off of the FSB. If you let the AGP frequency increase with everything, then your computer might not funtion like you want it to.

As a final note, remember to adjust voltages accordingly. If you can keep it cool, you will be fine when raising voltages. Take everything slowly and when Windows boots and loads up, do not raise the voltage anymore.

I hope that pretty much answered your question. I don't know anything about socket As though.
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Old 06-03-2005, 02:14 PM   #3 (permalink)
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thanks for the guide, i already knew all that except for the HTT having to be lowered... why is that? why can't it perform at a higher speed?
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Old 06-03-2005, 03:21 PM   #4 (permalink)
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Er... noboby has ever asked me that before...
I guess because you can't overclock the HTT. It is only made to go so high I think. If you go any higher, then it crashes or won't start.
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MSI K8N Neo2 Platinum motherboard
EVGA GeForce 6800 GT
2 GB DDR 400 (PC 3200) (2 x 1 GB sticks) (Dual Channel)
DVD player and seperate DVD RW drive
Floppy Drive
80 GB Western Digital Hard Drive
500 watt power supply
Sound Blaster Audigy
Logitech 5.1 surround sound speakers
SAMSUNG SyncMaster 710T LCD monitor
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Old 06-03-2005, 04:40 PM   #5 (permalink)
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because theres no substantial increase in performance, but there is a great increase in board stability once you go above the 2000HTT mark....

http://i4memory.com/showthread.php?t=327

a very thorough AMD64 OC'ing guide
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