Would it be better to run at a high FSB speed with slacker memory timings or a lower FSB speed with tighter timings? For example, I could clock my CPU to, say, 470x7 but my memory timings would probably go down to 5-5-5-15 or even worse. As it is, I have to up the RAM voltage to 2.2v to get it stable at 450MHz with 4-4-5-15 timings. I am using 2x1GB Geil PC6400C4 which should supposedly be 4-4-4-12 at 400MHz.
High FSB vs tighter timings query
- Thread starter Faffer
- Start date
Can I ask a daft/slightly rude question?
You say "As it is, I have to up the RAM voltage to 2.2v to get it stable at 450MHz with 4-4-5-15 timings" as if you expected more. It's exceeding it's rated speed, so the timings are slackening off. To get it to exceed it's rated speed you are having to give it more voltage. But your statement seems to imply you were expecting it to be MUCH better?
You say "As it is, I have to up the RAM voltage to 2.2v to get it stable at 450MHz with 4-4-5-15 timings" as if you expected more. It's exceeding it's rated speed, so the timings are slackening off. To get it to exceed it's rated speed you are having to give it more voltage. But your statement seems to imply you were expecting it to be MUCH better?
I'm a relative newbie when it comes to memory overclocking so you'll have to excuse me if I sound like a noob 
All I know is that the memory FAQ says that decreasing CAS and tRCD gices "significant performance increase".
I was implying that I don't really want to be increasing voltage too much, so if I could knock the voltage back down to stock, slacken off the timings and increase FSB speed, would I get significant performance increase in games and general use and will high FSB more than compensate for slack timings? I have had my CPU up to 485x7 and the auto setting for memory timings gave it 5-8-8-23. Changing it to manual and fiddling caused the BIOS to reset the FSB speed back to stock or cause Windows to reboot.
I think I will try the high FSB and slack timings again and see if I get a better 3D Mark score.
All I know is that the memory FAQ says that decreasing CAS and tRCD gices "significant performance increase".I was implying that I don't really want to be increasing voltage too much, so if I could knock the voltage back down to stock, slacken off the timings and increase FSB speed, would I get significant performance increase in games and general use and will high FSB more than compensate for slack timings? I have had my CPU up to 485x7 and the auto setting for memory timings gave it 5-8-8-23. Changing it to manual and fiddling caused the BIOS to reset the FSB speed back to stock or cause Windows to reboot.
I think I will try the high FSB and slack timings again and see if I get a better 3D Mark score.
You'll see nothing in 3D Mark as that is a graphics card test. It has a very small CPU test where it does all the rendering in software, but it's a graphics test really.
The Memory FAQ was written for AMD systems that have the memory controller on the CPU. That statement used to be absolutely critical to getting good performance but now the Intel memory controller is on the motherboard and there is so much cache available that it's almost irrelevant.
The Memory FAQ was written for AMD systems that have the memory controller on the CPU. That statement used to be absolutely critical to getting good performance but now the Intel memory controller is on the motherboard and there is so much cache available that it's almost irrelevant.
Soldato
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- 10 Apr 2004
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FSB > Timings with conroe
Timings > FSB with AMD64.
500mhz 5-5-5-15 > 400mhz 4-4-4-12
Timings > FSB with AMD64.
500mhz 5-5-5-15 > 400mhz 4-4-4-12
Concorde Rules said:FSB > Timings with conroe
Timings > FSB with AMD64.
500mhz 5-5-5-15 > 400mhz 4-4-4-12
Sorted mate, cheers for this, this answers a LOT to me coming from AMD background!
instead of creating a new thread I found a usefull reply from search
thx all!
