Help OCing DDR2 800 to 1066

Pedros2ngm · Nov 11, 2008

Wich should be the VDimm if the DDR2 800 goes to 1066 with this following latency 5-5-5-12 2T ? I'm actually using 2.1 for 920MHz, just for security, I don't know if it could be with a lower voltage Im lazy to test it right now :santa:

UglyChild · Nov 11, 2008

Try these timings; 6-6-6-16

18 is # 1 · Nov 11, 2008

You have 1.9 EVP http://www.ocztechnology.com/products/memory/ocz_ddr2_pc2_6400_gold_gx_xtc_dual_channel

I don't think they will go much higher than 920.

Pedros2ngm · Nov 11, 2008

Not this kit, the timings are 6-6-6-18 by default, the 5-5-5-12 are the timings that I set normally when overclocking. Says 2.1V @ box. What could happen if I exceed 920? I`d like to put at least 1000MHz.
Or... Is there a kit with 1200MHz? Cuz my board supports DDR2 1200MHz.

UglyChild · Nov 13, 2008

The worst will happen is your PC wont POST. You have to lose timings, add some voltage to NB and hope for the best.

And yes, you can get 1200Mhz RAM.

http://www.newegg.com/Product/Produ...147&Description=ddr2 1200&name=Desktop Memory

White_Pawn · Nov 13, 2008

UglyChild said:
The worst will happen is your PC wont POST. You have to lose timings, add some voltage to NB and hope for the best.

And yes, you can get 1200Mhz RAM.

http://www.newegg.com/Product/Produ...147&Description=ddr2 1200&name=Desktop Memory

its not really 1200mhz. =P its only 600mhz, 1200mhz effective.

18 is # 1 · Nov 13, 2008

The tRFC probably needs to be about 60.

Rich'[ard] · Nov 14, 2008

you'll need tRFC of 60 for sure, and atlesat 5-5-5-18 (or 5-5-5-15)
i've found that there's no real difference for higher ram speed compared to the FSB. i've tested 800mhz 4-4-3-10, 1000mhz 5-5-5-12 and 1066mhz 5-5-5-18, and they're all similar. (400FSB btw)

Pedros2ngm · Nov 14, 2008

the voltage increase on the NB should be about 0.5v?

jason4207 · Nov 14, 2008

Pedros2ngm said:
the voltage increase on the NB should be about 0.5v?

Step it up 1 notch at a time. Don't jump up through the voltage settings like that.

grungero · Nov 14, 2008

Try increasing your NB voltage and loosen the timings.

Rich'[ard] · Nov 14, 2008

NB voltage can effect the timings? =O
i never though of/ knew that.
anyway, if you want to reach 1066, try the settings i use :
NB 1.65v
RAM 2.2v
5-5-5-18 tRFC 60 (the rest is on auto)
2T timing
good luck :thup:

RSDXzec · Nov 15, 2008

I wouldnt overclock em any more than they already are

18 is # 1 · Nov 16, 2008

Rich'[ard] said:
NB voltage can effect the timings? =O
i never though of/ knew that.
anyway, if you want to reach 1066, try the settings i use :
NB 1.65v
RAM 2.2v
5-5-5-18 tRFC 60 (the rest is on auto)
2T timing
good luck

Richard, your NB and RAM voltage seem kind of high. Have you tried less?

Help OCing DDR2 800 to 1066

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