Hello all, just wanted to understand the difference between

Ram at 5-5-5-18 at 1.8V

and

Ram at 5-5-5-15 at 2.2V

currently in bios, the voltage settings is 1.8V, what is the impact of setting the DRAM voltage to 2.2V? will it be faster ? lol


btw i am using kingston hyperx cl5 ram

This post has been edited by Hou_JaI: Jan 16 2009, 02:18 PM

increasing voltage will lead to higher temps for the ram... but to go from 5-5-5-18 to 5-5-5-15 doesnt require u to change voltage la, so little tightening nonit increase voltage >"<

but understand from the kingston document

Timing Reference: 5-5-5-18 at +1.8V / 5-5-5-15 at +2.2V

it seems like i need to set the voltage to 2.2V before it really can operate on 5-5-5-15 ? right?!?!?


Source

http://www.valueram.com/datasheets/KHX8500D2K2_2G.pdf

This post has been edited by Hou_JaI: Jan 16 2009, 02:19 PM

JEDEC specs are as follow for ur ram

800mhz 5-5-5-18 1.8v
1066mhz 5-5-5-15 at 2.2v


u should state wat ram u were using at 1st... well im to be blamed too for not asking u >"<

well jedec says u need 2.2v to operate 5-5-5-15 1066mhz, so follow it ... but u can always try to tighten the timing u know

icic thx bro ! I really noob at over clocking hahaha

2.2v means ur ram ocing edi

not consider oced la if didn't adjust the timing but increasing the volt may lead heat / overheating. gd luck.

maybe not bro, if default setting like that, is that considered oc?

no need to set to 2.2 if u using it at stock speed...
at bios set as default can de

well the jedec specs says 2.2v on 1066mhz... so if u put 2.2v, thats not considered overclocking, i wouldn't even call it overvolting...

overclocking simply means, ure going OVER the factory specification, and same goes to overvolting

This post has been edited by iBenQ: Jan 16 2009, 05:45 PM

So that is why all the high performance RAM with high clock speed have the heat spreader + fan because they generate more heat? am i correct?

So they are just overclocked RAM with high price?

no.. higher speed higher v's it consume.... heat sink prevents da ram from getting hotter n u can play longer

forget about tightening ram timing.
its really 2 much time spend, too little gain.

ram timing has very very small effect on gaming performance. u'll only c a little gain in benchmarking..........

most important is capacity, den speed & timing.

remem dis oso... the tighter it is the nicer it gets

thx all pro for the reply!

anyway i have set it to 2.2V , ehm but in the cpu-z it shows like memory.jpg

and in spd shows like spd.jpg

Just curious in SPD, why there isn't any timing at 5-5-5-15 2.2 V? did i got con ?!?!?!....

more over it show max bandwidth is 6400 but what i got is a pc2 8500 ... please advise

In memory its 534.4 X 2 = 1068.8 hmmm so which is correct ?!?!? ...

btw, the ratio is 5:8, understand from google that ratio 1:1 is the best, any idea how to set it to that ratio?

This post has been edited by Hou_JaI: Jan 17 2009, 11:24 AM


Attached thumbnail(s)

spd will refer to jedec standard la @@...
ur actual frequency and timing will be under memory section...

if u wan put 1:1, make sure the multiplier for ram is 2... lets say ur bus speed 400, then ur ram must be ddr2-800

Dude,those ram are costly for a reason
They have better SPD programming,more layers pcb,best chip and bin nicely.

5-5-5-15 less than 2v also can, tested stable...

i only need 1.95 fir 4-4-4-8-t2