SRAM speed - what to expect if memory banks speeds do not match?
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Does anybody really knows what will happen if SRAM access speeds do not match? I have two sticks (PC133) - one marked 75 and the other 7.5 and experiencing some strange stuff - locking LCD and messed up display on LCD. I am trying to find out what is the problem. I suspected wireless mouse and USB problem but no luck. However - it runs better with just one memory bank. And it always fails in IE ! Cheers Vaclav
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Does anybody really knows what will happen if SRAM access speeds do not match? I have two sticks (PC133) - one marked 75 and the other 7.5 and experiencing some strange stuff - locking LCD and messed up display on LCD. I am trying to find out what is the problem. I suspected wireless mouse and USB problem but no luck. However - it runs better with just one memory bank. And it always fails in IE ! Cheers Vaclav
I'm not that familiar with static memory. Your best bet is to run a memory test to determine if the failure is located in the memory module. If you do register an error, swap the modules into different slots and test again. If you return another error, there is a good chance you do have bad stick of memory. If you do not return an error on the second attempt, it is probably a bad socket, not the memory module; in which case you would need to replace the motherboard. Another thing you want to avoid is "mix-n-match memory". Make sure that the memory installed in the system is nearly exactally the same. You said they are PC133, so make sure both are ECC or neither are ECC, make sure the brands match too - as some brands do not mix well with others. You will also want to check with your BIOS to make sure the voltage output to the modules are correct. Lastly, if I am not mistaken, SRAM is an old(er) technology. That being the case, you may want to think about upgrading the system entirely. -David PS- This is completely unrelated, but try out Opera instead of IE, you might like it...
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I'm not that familiar with static memory. Your best bet is to run a memory test to determine if the failure is located in the memory module. If you do register an error, swap the modules into different slots and test again. If you return another error, there is a good chance you do have bad stick of memory. If you do not return an error on the second attempt, it is probably a bad socket, not the memory module; in which case you would need to replace the motherboard. Another thing you want to avoid is "mix-n-match memory". Make sure that the memory installed in the system is nearly exactally the same. You said they are PC133, so make sure both are ECC or neither are ECC, make sure the brands match too - as some brands do not mix well with others. You will also want to check with your BIOS to make sure the voltage output to the modules are correct. Lastly, if I am not mistaken, SRAM is an old(er) technology. That being the case, you may want to think about upgrading the system entirely. -David PS- This is completely unrelated, but try out Opera instead of IE, you might like it...
I have been thru the swapping into different banks. So far it runs better with just single module in bank 0. Of course I do not notice any difference in speed. I have not tried bank 1 to find out if it is a socket itself. It would be very unlikely since I have similar failures in two PS's. I do not believe in upgrading just because it is "older" technology. When it runs it is OK for my C++ development. Actually I prefer slower machine - it lets me take a break during compile! Thanks for your input, Cheers Vaclav PS Technically it is really SDRAM. What puzzles me that the BIOS memory test always passes.
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I'm not that familiar with static memory. Your best bet is to run a memory test to determine if the failure is located in the memory module. If you do register an error, swap the modules into different slots and test again. If you return another error, there is a good chance you do have bad stick of memory. If you do not return an error on the second attempt, it is probably a bad socket, not the memory module; in which case you would need to replace the motherboard. Another thing you want to avoid is "mix-n-match memory". Make sure that the memory installed in the system is nearly exactally the same. You said they are PC133, so make sure both are ECC or neither are ECC, make sure the brands match too - as some brands do not mix well with others. You will also want to check with your BIOS to make sure the voltage output to the modules are correct. Lastly, if I am not mistaken, SRAM is an old(er) technology. That being the case, you may want to think about upgrading the system entirely. -David PS- This is completely unrelated, but try out Opera instead of IE, you might like it...
ruready511 wrote:
Lastly, if I am not mistaken, SRAM is an old(er) technology. That being the case, you may want to think about upgrading the system entirely.
Sram is the design used in CPU caches. It's much faster than dram but is more expensive to make and needs more space on the silicon. IIRC Sram uses several transistors to store a value, Dram charges a capacitor to do the same.
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