These capacitors are usually connected to a +5v rail and used for additional filtering of supply voltage. This can be checked by measuring the resistances - one pad should be connected to ground and other to +5v rail (just insert Voodoo in any motherboard with power supply and check the connection of these pads to corresponding pins of Molex connector). If so, you can use almost any ceramic SMD capacitor with voltage from 6.3v and above, and capacitance from 0.1uF and above. For exact value you should measure capacitance of capacitors near other memory chips. I don't think that would help, but it's worth trying.

Thank you for your help. I'll measure it as you told me so. Unfourtanely i can't measure the capacitance of the other nearby capacitors because i don't have a capacimeter, but i'll aim for a 1uf cap, and SMD if possible.

You'll have to desolder the cap to check its capacitance. The test works by applying voltage, so if it's in a circuit it could throw the reading off or potentially damage other components in the circuit.

I know, i know...

Even though this was a thread of my own, i'm only awnsering now 😜

Only now i got around a capacitor meter and removed a good bypass cap to measure what value should i get for the missing bypass cap, and the value was 1nF. After desoldering a LOT of smd capacitors from a box of dead hardware i finally found a 1nF smd cap and placed it on the voodoo2. Still beyond 512x384 all i get is artifacting and the computer crashes. My guess is that this was the original fault with the video card and the missing cap was only a later consequence of someone throwing it into the bin.

Should i quit this voodoo2? I've inspected all the chip soldering points of the card so i assume this card has a faulty ram chip. Is this a common thing on a voodoo2?
If so, any way to find which? My ideia would be a laser thermometer to compare the memory chips temperature but i don't have such tool still.