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8800GT voltage mods

Joined
May 6, 2005
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Location
Tre, Suomi Finland
System Name Ladpot ◦◦◦ Desktop
Processor R7 5800H ◦◦◦ i7 4770K, watercooled
Motherboard HP 88D2 ◦◦◦ Asus Z87-C2 Maximus VI Formula
Cooling Mixed gases ◦◦◦ Fuzion V1, MCW60/R2, DDC1/DDCT-01s top, PA120.3, EK200, D12SL-12, liq.metal TIM
Memory 2× 8GB DDR4-3200 ◦◦◦ 2× 8GB Crucial Ballistix Tactical LP DDR3-1600
Video Card(s) RTX 3070 ◦◦◦ heaps of dead GPUs in the garage
Storage Samsung 980 PRO 2TB ◦◦◦ Samsung 840Pro 256@178GB + 4× WD Red 2TB in RAID10 + LaCie Blade Runner 4TB
Display(s) HP ZR30w 30" 2560×1600 (WQXGA) H2-IPS
Case Lian Li PC-A16B
Audio Device(s) Onboard
Power Supply Corsair AX860i
Mouse Logitech MX Master 2S / Contour RollerMouse Red+
Keyboard Logitech Elite Keyboard from 2006 / Contour Balance Keyboard / Logitech diNovo Edge
Software W11 x64 ◦◦◦ W10 x64
Benchmark Scores It does boot up? I think.
This guide applies only to the G92 based nVIDIA 8800GT 512MB with the reference design circuit board.
If your card has different layout feel free to report here, and, if possible post clear pictures of the card.


http://img.techpowerup.org/071101/8800GT_G92_vGPU_vMEM_mods_small.jpg
http://img216.imageshack.us/img216/9756/8800gtg92vgpuvmemmodssmpt6.jpg

Addendum:
- stock vGPU voltages for this card are 1.05v (2D idle) and 1.10v (3D load)
- stock vMEM voltage for Qimonda GDDR3 (HYB18H512321BF-10) is 1.80v ±5%
- 1kΩ (or higher) variable resistor can be used for the vGPU mod in order to maintain the minimum voltage close to stock. A 500Ω VR will force the vGPU slightly higher than stock vGPU even when the VR is tuned for the lowest vGPU = maximum resistance.
- vGPU pencil mod turned out to be virtually impossible
- usage of a multimeter is strongly recommended
- ENJOY!


My original post @ XS
 
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