Hello, for almost a year i been trying to make something that seems impossible, or my testing software is lying to me and it works only i can't see that.
I been trying to mod a memory on radeon hd7790 or 260x from 2 to 4 gb, but it doesn't seems to be as simple as i first thought.
In theory 2 workstation graphic cards using the same graphical processor have 4gb of memory firepro w4300 has 4 256x32b layout and W5100 has 8x 128x16b layout all use gddr5 memory and internals of the bioses seems to be very similar so i was trying to wing it , but so far it seems either tserver can't show up 4gb memory for this model or something else is going wrong
I was able to track down pretty much all informations about decoding memory controller configuration from russian youtuber modbios website and my own reaserch.
I have traced boardview connections on pcb and compared them to rx550, all seems the same and there is no missing connections.
i even got exact the same model of the gpu i had boardview for to make sure .
At this point i probably should give up, but i kind of don't want to so i have some questions.
1. does anyone know what should happen if you install 8gbit memory modules and configure vbios to expect 4gbit ones, or solder 4gbit ones and configure bios to expect 2gbit
should the gpu start and work normaly only with half of memory, or should it stuck with black screen on startup? How should tserver react to it?
2. does anyone know how to disable memory channels on this gpu core? it would really help with testing. modbios youtube channel and his website show it in detail for most gcn graphic cards using 512 and 256 bit memory controllers, but not for 128bit cards
3. does anyone know how tserver should test firepro cards? most of the time i mod any bios i get unknown gpu errors or information that tserver failed to read bios and not even trying to test memory so i have no idea how to test if memory is working. many of my bios mods show in tserver tests that half of memory controllers work fine and half at all, so i am not even sure if it is my soldering or bios moding problem.
for disabling memory channels i would at least have to have a way to calculate checksums in red box, but since there was never any cutdown version of bonaire gpu core with 64 bit memory bus i don't even have any clue other than modbios videos about his testing suite of tserver ment for higher tier gpu's
i would really apriciate if someone smarter than me who actually work with amd gpu's for a while look at it or give me some pointers, otherwise it may take another year or two before i give up :P
I been trying to mod a memory on radeon hd7790 or 260x from 2 to 4 gb, but it doesn't seems to be as simple as i first thought.
In theory 2 workstation graphic cards using the same graphical processor have 4gb of memory firepro w4300 has 4 256x32b layout and W5100 has 8x 128x16b layout all use gddr5 memory and internals of the bioses seems to be very similar so i was trying to wing it , but so far it seems either tserver can't show up 4gb memory for this model or something else is going wrong
I was able to track down pretty much all informations about decoding memory controller configuration from russian youtuber modbios website and my own reaserch.
I have traced boardview connections on pcb and compared them to rx550, all seems the same and there is no missing connections.
i even got exact the same model of the gpu i had boardview for to make sure .
At this point i probably should give up, but i kind of don't want to so i have some questions.
1. does anyone know what should happen if you install 8gbit memory modules and configure vbios to expect 4gbit ones, or solder 4gbit ones and configure bios to expect 2gbit
should the gpu start and work normaly only with half of memory, or should it stuck with black screen on startup? How should tserver react to it?
2. does anyone know how to disable memory channels on this gpu core? it would really help with testing. modbios youtube channel and his website show it in detail for most gcn graphic cards using 512 and 256 bit memory controllers, but not for 128bit cards
3. does anyone know how tserver should test firepro cards? most of the time i mod any bios i get unknown gpu errors or information that tserver failed to read bios and not even trying to test memory so i have no idea how to test if memory is working. many of my bios mods show in tserver tests that half of memory controllers work fine and half at all, so i am not even sure if it is my soldering or bios moding problem.
for disabling memory channels i would at least have to have a way to calculate checksums in red box, but since there was never any cutdown version of bonaire gpu core with 64 bit memory bus i don't even have any clue other than modbios videos about his testing suite of tserver ment for higher tier gpu's
i would really apriciate if someone smarter than me who actually work with amd gpu's for a while look at it or give me some pointers, otherwise it may take another year or two before i give up :P
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