Question DDR2 RAM Overclock Help Please

[Led zeppelin blues]

Hi,
I have been trying to overclock my 2GB x 2 667mhz RAMs using the motherboards bios but every time i do something ,the pc just reboots with no display.
Both RAM sticks are of different companies

I dont wish to be a hassle on you people but here are what it says and i have no clue what and how much to change
i would like to overclock them to either 800mhz to max 1333mhz or any in between in which it would give best performance

SPD are -

DRAM tCL 5
DRAM tRAS 15
DRAM tRP 5
DRAM tRCD 5
DRAM tWR 5
DRAM tRFC 44
DRAM tWTR 3
DRAM tRRD 3
DRAMtRTP 3

So please can you good kind people help me out with these setting and numbers and how much to change so i can finally overclock them

Thanks a ton in advance !

 

[thx1138v2]

"Both RAM sticks are of different companies."

That's your first problem. There is no sense in trying to overclock dissimilar DRAM modules. You might be able to overclock a single module.

Your system is so old it may not overclock at all. Time for a new system with modern components.

 

[Led zeppelin blues]

"Both RAM sticks are of different companies."

That's your first problem. There is no sense in trying to overclock dissimilar DRAM modules. You might be able to overclock a single module.

Your system is so old it may not overclock at all. Time for a new system with modern components.

hey ,its my old rig ,im experimenting how far can it go with overclocking and so far results are pretty good ,i do have a RAM stick of the same brand sitting idle.

And....and i am not kidding ,with overclocking ,games from this year are giving a solid 30 - 40 fps on this ancient relic albiet on low setting

My main goal is to overclock it on a safe level and test it for safe clocking and actually donate this pc to someone really really poor so they can play casual games (i dont wanna say it lol but PUBG)

But you get my drift right ,its like a little fun thing im having fun doing with the pc