Memory chips My computer uses PC266 DDR memory chips,my problem is that there's no available in the market today.Can I replace it with PC333 or PC400?

You will get 512 Mb of memory but it will run at the slower bus speed. Think of it like this. Your memory is your car. Your car has the ability to go faster, depending on how fast the motor allows it to go. Unfortunately, everywhere you drive has a speed limit. Regardless of how fast your car CAN go, you are only able to drive the speed limit. That's kind of what is going on with the bus speed situation.

Bus speed determines how fast the memory and cpu can transfer data between one another. The higher the bus speed, the more information it can transfer at a quicker rate. If your memory is capable of transferring at a rate of 333 MHz but your motherboard can only support 266 MHz you will surely have the 512 Mb of ram but it will only transfer at the motherboard supported speed of 266 MHz as opposed to the full speed that the memory is capable of.

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No jumpers or switches need to set. If your going to upgrade/change your memory, just make sure that the memory your're going to insert are compatible with your motherboard. Check the system bus of your memory slots if what are the maximum system bus can support of that motherboard. Like example; DDR PC266 to PC400 or PC400 to PC800, make sure that you are not exced the maximum requirements of the memory for your motherboard it is because they cannot recognize your memory.

Dear Frind i think your second ram 512MB Have PC400 Buss Speed, I think also *********** board doesn't support PC400 buss Ram, Please try Ram with PC266 Or PC333 Buss speed. Best Regards sumon

no! PC266, you can change them to CP3200.
if the clock on the motherboard is adjustable, you may able to get away with PC400. in general, it is not a good idea to do that.

u8668.exe

dont mix your pc400 to the pc266.

PC2100 is DDR266 memory. PC2700 is DDR333 memory. PC3200 is DDR400 memory All are backward-compatible with PC2100. Memory is designed to be backwards compatible, so generally you can safely add faster memory to a computer designed to run slower memory, but... your system will operate at the speed of the slowest memory module or system component. Keep in mind that the memory does need to be the same type, for example, SDRAM cannot be mixed with DDR, and DDR cannot be mixed with DDR2. ZT3000 "Beta tester of "0"s and "1's"

if it works there is no problem, as the system would not boot up, but your memory will run at the slower of the two speeds, which will be PC266 and not PC333, as the faster speed ram is backward compatable because it always runs on the slowest speed.

PC2700 (DDR333) memory and PC3200 (DDR400) are backward-compatible with PC2100. Memory is designed to be backward-compatible, so generally speaking, you can safely add faster memory to a computer that was designed to run slower memory. However, your system will operate at the speed of the slowest module or system component (the "lowest common denominator" effect). One thing to keep in mind is that the memory does need to be the same type-for example, SDRAM cannot be mixed with DDR, and DDR cannot be mixed with DDR2. Let me know if you have any questions. Good Luck, Tim

Yes but they will both run at the slower pc333 speed.