As a considerable lot of you realize I have been investing bunches of energy modding GPU’s for OCN colleagues and myself. Subsequent to doing north of 100 voltmods I have taken in a couple of things and I need to share what I have realized here with you folks. Not quite a bit of this data is new, you can find quality data spread wherever around the web. My objective with this string is to examine all that I have learned into one strong source.

The objective of this string is to give general data widespread to all Gpu’s. I won’t give a lot of data relating to explicit Gpu’s.

This record will be a work underway.
Essential GPU Volt Mods

Segment 1: Presentation
On the off chance that you are perusing this then you probably needn’t bother with quite a bit of a presentation into overclocking, so I will skirt the newb stuff.

There are two principal ways that the PWM regulator can build the voltage deeply. There is the input circle strategy (FB) and the sense technique (+Vsen). In the two cases the most extreme PWM yield voltage is set by an outside resistor organization. Bringing down the obstruction of the FB or +Sense pins, will thus raise the greatest voltage of the of the PWM.

In current cards there will be different voltage and power states which can choke down both the quantity of dynamic stages and voltage. In any case, bringing down the obstruction of the outer FB of +Sense resistor network sets the most extreme result voltage during full burden conditions.

Area 2: Analyzing the GPU
Stage 1: Find the PWM regulator
The initial step is to recognize the voltage regulators of the card. This can be truly confounding from the outset yet when you do what’s necessary of them, they will turn out to be not difficult to recognize. As a rule the center and memory PWM regulators will be QFN bundle parts, however on more seasoned cards or low power cards they can be SOIC bundled parts (google those on the off chance that you don’t have the foggiest idea about the bundle names).

The stunt is that much of the time the PWM regulator will be exceptionally near the stifle/driver it controls. In this way, the initial step is to recognize the huge inductors and you can be genuinely sure that the PWM will be nearby. Here we have an essential reference GTX480 for instance

Stage 2: Find the comparing PWM datasheet
After you have recognized the objective PWM regulator, the subsequent stage is to find the datasheet that let you know the pin tasks. This is much of the time the most troublesome aspect to modding GPU’s on the grounds that large numbers of the datasheets were rarely delivered or are still NDA. The now renowned designer TiN over at EVGA presently has gathered an information base on his site xdevs, this is the best asset for seeing as unreleased or NDA datasheets. The datasheets he has made accessible to us are accessible through google.

Stage 3: Measure the obstruction
When you have the datasheet then you ought to have the option to effectively find the significant pin that was referenced before. You are searching for a pin checked “FB” or “+Sense” (once in a while called VSEN or VGPU). The following are a couple of instances of what you are searching for, they likewise end up being elusive

There will be a checking on the IC and a stamping on the datasheet IC so you can situate yourself. When you have accurately found which pin you will be working with, take your estimation from the absolute first discrete part you see associated with the pin. You ought to never need to work with the actual pin, consistently work on the parts associated with the pin. In uncommon cases the pin you really want will be under the PWM, yet that is an issue for an alternate part of this aide.

Once more, working with the GTX480 model, you can see it utilizes CHL8266 and the pin you need is VGPU (pin 4). In this specific case, I estimated an obstruction of 1.6 ohms. Record this number since it is the most basic angle to the voltmod.

LEAVE A REPLY

Please enter your comment!
Please enter your name here