I agree with that first part, but not the second. Official DDR runs at 1.5. There are many other sticks however. If you have some of that early 1.8v DDR3 ram, it should run in any DDR3 board. The issue you'll face is that if you have an Intel board you can't use more then 1.65 without burning out the pins. You'll need to boot, and lower the settings to something Intel boards can handle.
So yes, what board and ram do you have?
Edit: Can't be done. You can't use DDR2 ram in a DDR3 board. On the bright side you have a S775 board which to my knowledge can use that early 1.8V DDR3 ram. You'll want to sell your DDR2 and buy some new 1.65v DDR3 however.
As I figured, the ASRock G41M-S3 uses DDR3 and the RAM you linked is DDR2 and will not work on that ASRock; it's 100% incompatible. However, the Dell BIOS is locked so you cannot set the DRAM Frequency >1066 MHz; enter the BIOS and look for yourself.
Memory Type: DDR3 PC3-8500, DDR3 PC3-10600, DDR3 (non-ECC)
Maximum Memory: 4GB 2x2GB max
However, the Dell BIOS is locked so you cannot set the DRAM Frequency >1066 MHz; enter the BIOS and look for yourself.
The RAM you have is DDR3 1333MHz but it's downclocked to 1066Mhz. I made my selections based upon your Dell and not the MOBO you listed.
The "problem" is Dell's BIOS locks out changes to the DRAM Frequency, so if you purchased DDR3 1600 MHz it still would only run at 1066 MHz, the BIOS would have to allow the change, and I have not seen a consumer Dell allowing Frequency changes. Reson most folks would make mistakes causing their phones to ring off the hook.
and also,if i understood correctly,it doesnt matter if i buy a ddr3 with more frequency than my motherboard support,it still would run and the maximum frequency the motherboard support,right?the reason i ask this is because i might upgrade my motherboard/cpu in a while,so that way i can put that ram that i bought earlier in that new motherboard.
also regarding the voltage,which is the maximum ram voltage i can put on my motherboard?(my motherboard is 1.5v)
Thanks for everything,hoping this to be one of my lasts posts on this thread so i cant bother anymore with this.
Yes I did answer your question (2) posts ago, the AD2U800B2G5-DRH DDR2 is incompatible - "and the RAM you linked is DDR2 and will not work". I answered the question for either case ASRock and/or Dell that you posted.
Yes, unless your BIOS allows DRAM/Memory Frequency adjustments the RAM is going to run at the BIOS Default which is DDR3 1066 MHz.
DDR3 1.50v, 1.60v, and 1.65v will all work, but even the 1.65v DDR3 at 'SPD' 1066 MHz should be 1.50v. For best results purchase the Crucial that I linked.