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Memory performance when updating...
- Thread starter qbas
- Start date
- Joined
- Nov 29, 2001
- Location
- NC, USA
that entirely depends on the speed you run your fsb/mem at, not on the speed the memory is rated for. pc3000 is not faster than pc2100 if both are running at 133mhz. pc3000 is rated for 380mhz DDR, or 190fsb. So, to get the extra performance from the pc3000 you will need to use a higher bus speed.
btw, the difference between memory bandwidth at 266mhz vs 380mhz would be quite large.
J.
btw, the difference between memory bandwidth at 266mhz vs 380mhz would be quite large.
J.
- Joined
- Jul 12, 2002
The majority of the improvement you would see would be the fact that you would be increasing from 512MB to 1GB of ram. For some tasks this is very noticeable, for others hardly noticeable at all. It all depends on your usage of the machine.
Since you have an AMD system, you have to run the 1:1 mode for good performance. This means that you can't run the memory at a faster clock speed than your fsb, so unless the new ram allows you to increase the fsb you will see minimal performance differences. If your cpu is unlocked and you can increase the fsb significantly from your current level you will see goodly performance gains as a result, but simply installing the faster-rated modules with no other changes will not have any impact beyond the increased amount of ram.
Since you have an AMD system, you have to run the 1:1 mode for good performance. This means that you can't run the memory at a faster clock speed than your fsb, so unless the new ram allows you to increase the fsb you will see minimal performance differences. If your cpu is unlocked and you can increase the fsb significantly from your current level you will see goodly performance gains as a result, but simply installing the faster-rated modules with no other changes will not have any impact beyond the increased amount of ram.
- Joined
- Jan 18, 2003
Is the 1800 a new cpu also do you know what stepping it has and going form 266 fsb to 333 (133 to 166) shold give you about 10% increase in overall performance thats just a guess may be more or less depending if the clock speed on the cpu was keep the same.
- Joined
- Jul 12, 2002
qbas said:
Since your fsb is only at 142 better ram may allow you to run it at a considerably faster rate and will have a very beneficial effect on performance. Some people get boards like that to run fsb's as high 190-200MHz, but don't count on it. You should be able to get up to 166MHz or so very easily with high quality ram like you are considering, of course you will need to lower your multiplier to stay within your cpu's limits with the new, higher, fsb.
- Joined
- Jul 12, 2002
You're missing the point here. Right now you are running 142fsb x 12.5 => 1775MHz. Going to better ram won't necessarily allow you to run substantially more than 1775MHz or use less Vcore. What it will allow you to do is something like this:
170fsb x 10.5 => 1785MHz
This would be a lot faster in practice as it would give you a bunch of memory speed compared to running the board at only 142fsb. If you got lucky you might pull off something like:
187fsb x 9.5 => 1777MHz
170fsb x 10.5 => 1785MHz
This would be a lot faster in practice as it would give you a bunch of memory speed compared to running the board at only 142fsb. If you got lucky you might pull off something like:
187fsb x 9.5 => 1777MHz
- Joined
- Nov 29, 2001
- Location
- NC, USA
nobody has asked what his mobo is....
If you try and run 170fsb on a 266 platform u could have some real problems. U need to be sure your boards chipset will support the desired speeds.
J.
If you try and run 170fsb on a 266 platform u could have some real problems. U need to be sure your boards chipset will support the desired speeds.
J.
- Thread Starter
- #13
My mobo is a KT4 Ultra (FSB 333). And i get it now that i could get higher FSB's with less multipliers and that would be faster than using only say 142 FSB...like getting 170 FSB?
Oh and i can't get Spread Spectrum off, everytime i do that my computer freezes...any idea how i could do that without locking up?
Oh and i can't get Spread Spectrum off, everytime i do that my computer freezes...any idea how i could do that without locking up?
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