please help! overclock problem, can't get past 225 fsb

ExecutorKevin

ExecutorKevin

ExecutorKevin

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well, on my bios I've bumped up the speed to 225Mhz and when I put it to 226 and restart it goes overclock failed. I don't know how to change my voltage and have just left it on auto because there are so many options. I am on a stock cooler and when my system is at full load I don't exceed 50-55 and my idle temps are 34. I have a 500w psu with 3 18a 12V rails and a 460gtx on stock settings.
All help appreciated, thanks!

Processor 1 ID = 0
Number of cores 2 (max 2)
Number of threads 2 (max 2)
Name AMD Athlon II X2 255
Codename Regor
Specification AMD Athlon(tm) II X2 255 Processor
Package Socket AM3 (938)
CPUID F.6.3
Extended CPUID 10.6
Brand ID 13
Core Stepping DA-C3
Technology 45 nm
TDP Limit 60 Watts
Core Speed 900.0 MHz
Multiplier x FSB 4.0 x 225.0 MHz
HT Link speed 1125.0 MHz
Stock frequency 3100 MHz
Max VID 1.400 V

Bios : american megatrends 0702
Thank you!
 
The FSB controls several clocks with AMD

The PCIe clock is at half the FSB and should be locked at 100MHz before overclocking.
The HT and NB is often 10x FSB and you may be having a problem running that at 2260MHz although you should not.
Memory is based on a multiplier like 6.66x which gives 1333MHz for a 200FSB, you could be failing by overclocking the memory. You should reduce the memory multiplier before overclocking the FSB

Voltage is also probably an issue.

andy.
 
what do you mean? I thought the fsb meant the speed of the cpu and then multiplied by the multiplier, so could I damage my graphics card as well?
I dont understand what you mean also by the memory multiplier?
How do I change the voltage?
Thanks!
 
FSB front side bus is an old term and now it is generally called the frequency clock or bus clock or some such.
It does control all the clocks on the AMD, PCIe, memory, Ht link etc. and you need to have all the multipliers right.
What motherboard is it? What RAM have you?
I would also look at better cooling than stock before overclocking further.

Also you will have a 15.5x stock multi on that processor (15.5 x 200 = 3100) and 15.5 x 225 is almost 3.5GHz quite good for stock cooling. You will need to check your temperatures when using prime 95 or similar for an extended period before you can say it will be safe or stable.

My pc at 3.5GHz
bus clock = 250MHz
CPU 14x 250 = 3500MHz
HT and NB 10x 250 = 2500MHz
memory 6.66x 250 = 1665MHz (1600 memory)
PCIe 100MHz (locked)
 
Last edited:
nkata said:
FSB front side bus is an old term and now it is generally called the frequency clock or bus clock or some such.
It does control all the clocks on the AMD, PCIe, memory, Ht link etc. and you need to have all the multipliers right.
What motherboard is it? What RAM have you?
I would also look at better cooling than stock before overclocking further.

Also you will have a 15.5x stock multi on that processor (15.5 x 200 = 3100) and 15.5 x 225 is almost 3.5GHz quite good for stock cooling. You will need to check your temperatures when using prime 95 or similar for an extended period before you can say it will be safe or stable.

My pc at 3.5GHz
bus clock = 250MHz
CPU 14x 250 = 3500MHz
HT and NB 10x 250 = 2500MHz
memory 6.66x 250 = 1665MHz (1600 memory)
PCIe 100MHz (locked)
Click to expand...

so if I leave it at 225 @ 3.5Ghz and at full load (prime 95) it does 55 degrees will that affect my graphics card or anything else because I don't want that overclocking. and how do I increase the voltage or something cause when I do a 226 it says overclocking failed.

And Mr. surveyor, sometimes I wonder whether you were born sarcastic or just plain old. jk ;)

Motherboard is a Asus M4N68T-M LE V2
Ram is 2GB Corsair Value 1366Mhz
 
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