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AMD Athlon II x4 645 Overclocking Help - Page 2

post #11 of 26
There could be many factors. It could be the chip, it could be the board, and it could be the ram. I do know that those chips are not great over clockers. Most people can get 3.3 stable out of them. While a few can hit 3.5 and very few can get 3.6 out of that chip. The people that are getting the higher clocks are running good over clocking boards. So with that chip I would not expect much more then what you paid for.

Now the fact that you raise it just a hair and the computer fails to load is something that could be the board or ram. Set you ram to really loose timings and bump it down to something like 800mhz and see what happens when you try to over clock it just a hair.

But knowing what you has to beginning with would be really nice.
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post #12 of 26
Thread Starter 
Quote:
Originally Posted by Erick View Post
the 200 --> 210, that thing he changed its called HT reference clock. Or Bus speed. Cpu frequency it self its the 3.1ghz
I see I thought it was something to do with his ram since somebody said when you mess with the FSB it also messes with the Ram
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post #13 of 26
Quote:
Originally Posted by lukeibob View Post
I will try to gather them But I know he has these


MOBO:
http://cgi.ebay.co.uk/Asrock-AMD-Soc...#ht_3282wt_906


CPU : AMD Athlon II x4 645

RAM: 4GB DDR3

HDD: 500GB WD Caviar

GPU: ATI Radeon 5450 Overclocked
to be honest, that is not a board that I would over clock on. There are no heatsinks on any of it. The vrms are bare and if you over clock that thing and it works. You will be running a high risk of trashing your board
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post #14 of 26
Thread Starter 
OK I told him that its a 3+1 but he raised the CPU Voltage to 1.5 to try and make it Stable

The Overvolt worked it was just when we tried to raise the CPU Freq it didnt like it
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post #15 of 26
Isn't a 1.5 CPU voltage extremely dangerous for a 3+1 mobo, even with or without MOSFET cooling ?

I just OC'd mine, my 2.8 is stable at 3.250 with a 1.320 core, but there's other things I had to change as well.
post #16 of 26
Quote:
Originally Posted by Erick View Post
the 200 --> 210, that thing he changed its called HT reference clock. Or Bus speed. Cpu frequency it self its the 3.1ghz
We all know what he was talking about. This thread is not about proper use of BIOS terms, it's about fixing unstable OC.

Quote:
Originally Posted by leichtwork View Post
to be honest, that is not a board that I would over clock on. There are no heatsinks on any of it. The vrms are bare and if you over clock that thing and it works. You will be running a high risk of trashing your board
Board is pretty crappy. But it supports a 125W CPU, so mild OCing a 95W CPU shouldn't pose a danger.

If you give us more details, we will be more helpful. From the sounds of it right now, the problem could be anything. I suspect he has some cheap RAM that can't be OCed at all.
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post #17 of 26
Quote:
Originally Posted by lukeibob View Post
OK I told him that its a 3+1 but he raised the CPU Voltage to 1.5 to try and make it Stable

The Overvolt worked it was just when we tried to raise the CPU Freq it didnt like it
I would be very careful of running that high voltage on that board. Like I and someone else mentioned, there is no heatsinks on the board and that will case problems down the road. I would honestly leave it at stock and run with it until a better board could be purchased.

I had the athlon II 640 and I ran it at 3.0 and 3.3 and really did not see that much difference. When the time came I just upgraded and that would be the best bet for your friend. Leave it alone or risk the chance of destroying the board.
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post #18 of 26
Thread Starter 
OK I will tell him

Thanks anyway
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post #19 of 26
Thread Starter 
My Motherboard is a 3+1 Phase so If I bought a Phenom or an Athlon and ran it at 1.4 - 1.5 Volts with Heatsinks on the VRM's would I be safe ?


What about these :


http://cgi.ebay.co.uk/NEW-heatsink-R...#ht_1983wt_905
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post #20 of 26
Quote:
Originally Posted by leichtwork View Post
I would be very careful of running that high voltage on that board. Like I and someone else mentioned, there is no heatsinks on the board and that will case problems down the road. I would honestly leave it at stock and run with it until a better board could be purchased.

I had the athlon II 640 and I ran it at 3.0 and 3.3 and really did not see that much difference. When the time came I just upgraded and that would be the best bet for your friend. Leave it alone or risk the chance of destroying the board.
I literally today OC'd my Athlon II x4 630 from 2.8 to 3.250 with stock cooling and no VRM cooling, after lots of testing and tweaking it's stable, but I also wonder if it's worth it as my mobo is a 3+1 board. My CPU voltage is only 1.320 though, significantly lower than 1.5

I forgot to benchmark before I OC'd so other than my own memory and the feeling I have for fluidness in games before and after is all I have to go by, but, I could easily go back to stock everything and bench. Then OC again since I know stable settings then see how much of a performance increase I'm getting.

Windows Experience Processor score did go from 7.2 to 7.3 so logically I am getting some type of increase, but that's a very low-tech test, and also I need to know the the possible danger the VRM's are in is worth the performance increase.

http://www.overclock.net/amd-cpus/10...630-4x2-6.html

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