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DIGIT-ARC / Hardware / Hardware Q&A

RAM

11 posts · originally from https://geek.digit.in/community/threads/ram.90931/

A
adithya217 Original post #1
Jun 20, 2008 at 10:41 AM
is the performance and fps better when having 2gb ram or 4gb ram.

i have 2x1gb transcend ddr2 800mhz ram and
2x1gb samsung ddr2 667mhz ram

should i use them combinedly or not.also is the performance difference negligble and not worth the trouble of dealing with 64-bit OS's issues.
channabasanna
channabasanna #2
Jun 20, 2008 at 11:41 AM
As far as i know we cannot use RAM with different frequencies together..
Beta Waves
Beta Waves #3
Jun 20, 2008 at 4:30 PM
I think you can use .. if you have four slots see that there will be two each which will be in the same colour .. so insert your two 800 Mhz RAM sticks in the same coloured slot and the other two in the second coloured slot
ECE0105
ECE0105 #4
Jun 23, 2008 at 12:42 PM
Yep, Read the slots as A,B,C,D from the CPU Side to the edge of the Mobo.

The 800MHz RAM Should be inserted in A and C and the 667 MHz should be in the B & D Slots. This will ensure that the RAM Runs in Dual Channel Mode.
RexRazr
RexRazr #5
Jun 23, 2008 at 2:30 PM
tho i think u better stay off from using RAM sticks together that have different frequencies...just to avoid certain issues
Beta Waves
Beta Waves #6
Jun 23, 2008 at 3:48 PM
ECE0105 said:
Yep, Read the slots as A,B,C,D from the CPU Side to the edge of the Mobo.

The 800MHz RAM Should be inserted in A and C and the 667 MHz should be in the B & D Slots. This will ensure that the RAM Runs in Dual Channel Mode.
Click to expand...

May be different motherboards have differnet order so just follow the colour code same type of RAM modules in same colour slots ....
Roadripper
Roadripper #7
Jun 23, 2008 at 3:53 PM
B it ll run at the lower frequency only .. ie 3.2gb in 32 bit @ 667 Mhz...
Beta Waves
Beta Waves #8
Jun 23, 2008 at 4:00 PM
Roadripper said:
B it ll run at the lower frequency only .. ie 3.2gb in 32 bit @ 667 Mhz...
Click to expand...

May be it runs at lower Frequency itself ... that i am not sure ... but it is 64bit wide buddy not 32 bit :D
Roadripper
Roadripper #9
Jun 23, 2008 at 4:03 PM
^^ i said for 32 bit OS systems u can utilise onyl 3.2gb of ram whre as in 64bit u can utilise full 4gb... its 2^32 and 2^64 transistors ..;):rolleyes:;-)
Beta Waves
Beta Waves #10
Jun 23, 2008 at 4:15 PM
Roadripper said:
^^ i said for 32 bit OS systems u can utilise onyl 3.2gb of ram whre as in 64bit u can utilise full 4gb... its 2^32 and 2^64 transistors ..;):rolleyes:;-)
Click to expand...

No no you got me wrong .. I think i got you wrong i was talking about the data bus width not about the address bus :D

And there is slight mistake in your calculations :D .. When you say 32 bit processor it means it has 32 bit address lines ..so 2^32 combination...so actually the processor can access 2^32 memory locations. i.e calculate 2^32 and divide it by 1024 thrice that is the amount of RAM in GB the processor can utilize ...that turns out to be 4 so a 32 bit proc can access 4GB of RAM

And if you do 2^64 and divide it by 1024 thrice you will get a very huge number in the order of power 10 !!! i don think anyone will be using 1X10^10 GB of RAM ...lol
Roadripper
Roadripper #11
Jun 23, 2008 at 11:37 PM
yeah u took me as data bus width and i took as address lines ..;):D:pNo man i hav personally checked on ma frns pc wit 4gb of ram on 32bit OS its 3.2gb nt complete 4gb ...logically ur correct....;):D