Originally Posted by PPBottle
Has anyone tested changing the VDCCI value with Hex and how it behaves with memory overclocks?
For my 470 XFX single fan, the On Semi controller measures it (while IR's dont show it, at least on HWinfo) and it was 0.9v, which isnt any of the values the other bioses in this thread have. From what I gather on earlier Radeon IMCs, more doesnt always mean better and too much can also be hurtful to memory stability.
Also, is this value the actual VDCCI or the pointer thingy that was discussed in the other thread? Thanks in advance!
too tired to answer that in detail, i think mynm solved that and i allowed myself do add vddci. and i think i was right; but it is the pointer, the value for vddci is also found in the bios, it is right next to the pointer:
Originally Posted by post#1
00 0C B6 03
means 950mV.. ok let's have a closer look:
typedef struct _PolarisMemClkDepRecord
0C B6 03 00 00 E8 03 40 0D 03 00 00 00
0C - > "The Pointer" is VDDC, cause it actually points to a VDDC voltage, but it's IMC/VDDCI cap something..
B6 03 -> VDDCI (950mV)
00 00 -> VDDCGFXOffset
E8 03 -> MVDD (1000mV) this is the value PBE reads as mem voltage..
40 0D 03 00-> MemClk (2000MHz x100)
00 00 -> Reserved
this is the same for all 580 and 480 BIOS, only VDDC voltage table has changed, so 0C means 1000mV for the 580 BIOS and 1050mV in a 480 version. ok, that was some detail
no one ever experimented with that. would be happy for some data.
Originally Posted by davidm71
Will this work on a RX460 as well? Got a XFX Double Disappation RX460. Be fun to turn it into a 560 if possible?
someone tried in another thread. didn't went that well..