VOGONS


Reply 20 of 21, by makechu

User metadata
Rank Newbie
Rank
Newbie
dm- wrote on 2025-06-25, 03:51:

best fx5200 5500 pci card is a card you create yourself.

i made my own from PNY pcb, used fx5200 ultra gpu and 3.6ns memory chips, i got a 340Mhz core and 600mhz ram and 1st place on hwbot in 3dmark 99,00,01,03 scores -)

Although I have done a lot of modifications and repairs in the past, I am not that impressed of the PCB and components on this card that I would want to go that deep in to this one. Otherwise, sure.

Reply 21 of 21, by makechu

User metadata
Rank Newbie
Rank
Newbie

I had to make some corrections to the original post as I incorrectly assumed the first listed set of capacitors were RAM related, but I found out that actually they are connected to the 5V voltage rail of the PCI slot, after I started reverse engineering the power supply side of the card.

I have to figure out first what the regulators feedback compensation circuits are, and adjust the feedback compensations to accommodate very low ESR polymer capacitors. Original capacitors in a switching regulator circuit should never be replaced with anything else than with ones that correspond the originals in their capacitance and ESR at the switching frequency, unless the compensation is changed also. Maybe I'll do a post about how I implemented the compensation adjustments if I add polymer capacitors to this card.