Bought this card about a week ago, firsts oc's only 650Mhz gpu stable.
Got some artifacts with only 10Mhz more.
Tried to look for some vmods for this card and nothing, only found a guide for bios mod on gf cards.
Tried out and put 1.5v on core ( default is 1.32). Tested and yet the same artifacts at the same speed.
Incresead to 1.8v (saw the max volts in shaminos guide) and yet nothing...
What did i do?
Start searching for the PWM controller in the card.
and get the datasheet to NexSem :
Measure resistance between FB and GND :
wich is 50K. Got some pot's in home but i can't find vgpu and vmem measure points. So i calculated it
Vgpu(new) = Vgpu(old)*(Rgpu/Rgpu(new))
Set the pot to 40K and that gives 1.6vgpu since this core has 1.32v default (saw it in NiBiTor)
Don't wanna end the warranty for now, so i grab a grabber...
A little bit more mem refrigeration ( got wc on gpu )
Results :
Pushed a little for the mems
And the final benching results :
Tell you guys one thing,. Only with 1.6Vgpu hit 800Mhz in core, 783Mhz benching in most of 3D01 tests...
Missing VMem but tomorrow going to google for the chips and see the max V they can handle...
We got card i think....
And this 148 still amazes me, only 1.6vcore and benching at 3.1Ghz... Still got buy a C2D....
Some updates on mems for the next week maybe (got a lot exams this week... )
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