Ti-4600 vmods... how high?

[Tekime]

Sup all,

I finished my first vmod on my Ti-4600 a few days ago. I redid the mod last night with a 1Kohm trimmer and some much nicer micro-clips. (no soldering, not yet anyway..).

http://www.fury-tech.com/images/user/Tekime/vmem01.jpg

http://www.fury-tech.com/images/user/Tekime/vmem02.jpg

This was for vmem, voltage now reads ~1.95v @ 1Kohm using a multimeter. Now running mem at 748, at 752 I start getting artifacts still.

How high can I take the voltage before I start really hurting my card? I've got Tweakmonsters on the memory chips.

Also I'll be doing the core vmod so I'm wondering how high I should take that. Being cooled with a Cooljag JAC313C right now, might move up to a JAC304C I have waiting if I find the time. It's an A3 stepping core.


Thanks :toast:

[Tekime]

Anyone???

I've taken mem up to 3.1V and it's really not showing any benefit... still artifacting at 452 :(

This stinks because without the mod I could already hit 742 mem

[resonatorman]

There seems to be a thin red line in voltage increase, crossing it won't provide better oc'ing, at least not w/o improved cooling...
As to core voltage : anything below 2 V seems safe to me.

[Tekime]

Well I've got tweakmonsters on vram and during testing a 92mm high-cfm fan right next to the card. The sinks don't feel too hot, just warm to the touch. I guess it could just be the limit of the RAM, but I'd be surprised that the additional voltage would do so little. Do you think 3.25V on RAM would be too high?

[resonatorman]

I refered to the GPU in my answer, heat should not be that much of a problem with your BGA ram. I think you know the formula for the maximum theoretical ram frequency, anything above is sheer luck. Use artifact-tester w/ each voltage/Mhz enhancement, when it shows high numbers - stop!