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Is it possible my 1055 sucks so much it cant do over 3.5Ghz? - Page 2

post #11 of 21
Quote:
Originally Posted by Jonesey I7 View Post
It's more than likely your ram that is the stopping factor. Raising the fsb that high, also raises the fsb of the ram, which is rated at 166. Although your ram is "running at stock speeds", the fsb used to get that speed is NOT.
Please explain what you mean by ram FSB...
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post #12 of 21
Quote:
Originally Posted by doritos93 View Post
Please explain what you mean by ram FSB...
What ever you set your fsb at for the cpu, this is the fsb your ram is using too. Now you can "down clock" your ram by changing the divider from 8 to 6 or 4, but the fsb stays the same. With 1333mhz ram, it's stock fsb is 166... i.e. 166*8. On 1600mhz ram, your stock fsb is 200... i.e. 200*8. On 2000mhz ram your stock fsb is 250.. i.e. 250*8.
    
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post #13 of 21
Quote:
Originally Posted by Jonesey I7 View Post
What ever you set your fsb at for the cpu, this is the fsb your ram is using too. Now you can "down clock" your ram by changing the divider from 8 to 6 or 4, but the fsb stays the same. With 1333mhz ram, it's stock fsb is 166... i.e. 166*8. On 1600mhz ram, your stock fsb is 200... i.e. 200*8. On 2000mhz ram your stock fsb is 250.. i.e. 250*8.
FSB is a reference value. It's not the actual speed at which any components communicate.
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post #14 of 21
lolz
    
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post #15 of 21
Quote:
Originally Posted by doritos93 View Post
FSB is a reference value. It's not the actual speed at which any components communicate.
Correct, but it's still used in conjunction with the speed you use is it not?
    
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post #16 of 21
Yes, but thats why there is a divider.


At 1:1 with a 200 fsb the ram runs at 200Mhz, at 1:2 with 200 fsb it runs at 400Mhz.
    
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post #17 of 21
Quote:
Originally Posted by BallaTheFeared View Post
Yes, but thats why there is a divider.


At 1:1 with a 200 fsb the ram runs at 200Mhz, at 1:2 with 200 fsb it runs at 400Mhz.
but the divider is STILL based off the fsb correct? For example, take your example of 200 fsb and a 1:1 divider equals 200mhz ram right? Now make the fsb 210 and use the same exact divider of 1:1, it's now 210mhz correct? Do you see my point? Raise the fsb, it affects both the cpu AND the rams' starting speed. So, with his 1333mhz memory, with a stock speed of 166fsb, the fact that it even RUNS at 250 is pretty amazing, let alone anything higher.
Edited by Jonesey I7 - 1/5/11 at 5:55pm
    
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post #18 of 21
Quote:
Originally Posted by Jonesey I7 View Post
but the divider is STILL based off the fsb correct? For example, take your example of 200 fsb and a 1:1 divider equals 200mhz ram right? Now make the fsb 210 and use the same exact divider of 1:1, it's now 210mhz correct? Do you see my point? Raise the fsb, it affects both the cpu AND the rams' starting speed. So, with his 1333mhz memory, with a stock speed of 166fsb, the fact that it even RUNS at 250 is pretty amazing, let alone anything higher.
I think you're misunderstanding the FSB's role. Your CPU doesn't communicate with RAM via a FSB or anything. That's the old days. The CPU and RAM communicate via a northbridge, which has it's own frequency and it's own multiplier.

So you are right in that by increasing the FSB (or reference clock) you are increasing the internal clock speed of all the related components although that's why we have multipliers that can be lowered in order to compensate and maintain balance.

There are high end boards that can hit really high FSB values. A value routinely obtained by members in this section of the forums is 286. You can probably find as high as 350-400.
Edited by doritos93 - 1/5/11 at 6:07pm
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post #19 of 21
try adding Motherboard NB voltage as that is what is used to generate the clocks. For instance for me to run the 320 FSB i do I have to give the MB NB 1.55v with at stock would only be 1.015v
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post #20 of 21
My HTPC uses 250 for FSB ,Athlon x2 @ 3500 (250 x 14)
RAM is some generic Wintec @ 1333 9-9-9, and has no problems running @ 250 for FSB. I dont think that is really an issue
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