I have a DELL where I cannot overclock and cannot even change the latency timings, I am pretty sure it uses whatever the memory says in SPD.
So its a XPS 410 and I have a Core 2 Duo 6700. All of the Core 2 Duo line currently are 1066 FSB which means that I believe DDR2-533 should be the ideal memory. I have read that faster memory (667 and 800) will just run in 533 mode since thats half the FSB and the DELL bios doesnt support the async modes with different ratios.
Secondly, I have heard the SPD in each memory is set by the JEDEC recommended for each DDR mode. So 533 is 4-4-4-10 and 800 is 5-5-5-12. If you buy a DDR800 and it sais 4-4-4-9, that means it supports it, but you MUST override it in BIOS because the SPD will always report 5-5-5-12 for 800mhz memory.
So I just placed an order for DDR800 memory with timing of 4-4-4-12 for my system, but my question is wether I wasted my money if the DELL is only going to run it at DDR533. Additionally, will this mean the dell will run it at 5-5-5-12 since thats the SPD on the chip, whereas if I bought simple DDR533 memory, the SPD would be set lower and would actually run faster on my system.
Any thoughts/expertise on this issue?
-David
So its a XPS 410 and I have a Core 2 Duo 6700. All of the Core 2 Duo line currently are 1066 FSB which means that I believe DDR2-533 should be the ideal memory. I have read that faster memory (667 and 800) will just run in 533 mode since thats half the FSB and the DELL bios doesnt support the async modes with different ratios.
Secondly, I have heard the SPD in each memory is set by the JEDEC recommended for each DDR mode. So 533 is 4-4-4-10 and 800 is 5-5-5-12. If you buy a DDR800 and it sais 4-4-4-9, that means it supports it, but you MUST override it in BIOS because the SPD will always report 5-5-5-12 for 800mhz memory.
So I just placed an order for DDR800 memory with timing of 4-4-4-12 for my system, but my question is wether I wasted my money if the DELL is only going to run it at DDR533. Additionally, will this mean the dell will run it at 5-5-5-12 since thats the SPD on the chip, whereas if I bought simple DDR533 memory, the SPD would be set lower and would actually run faster on my system.
Any thoughts/expertise on this issue?
-David