A new utility has emerged, entitled, “CUINFO” on Overclock.net which outlines how many compute units are enabled on Fiji, Hawaii and Tonga GPUs. The tool is designed to provide information on your card’s capabilities and offer the ability to unlock specific disabled compute units. However, many CUs are hardware locked and cannot be enabled using this software. According to VideoCardz, if the hardware message resembles the text below, you cannot perform a manual unlock or overriding might cause some kind of component failure:
Adapters detected: 1
Card #1 PCI ID: 1002:7300 – 174B:E329
DevID [7300] Rev [CB] (0), memory config: 0x00000000 (unused)
Fiji-class chip with 16 compute units per Shader Engine
SE1 hw/sw: 00030000 / 00000000 […………..xx]
SE2 hw/sw: 02400000 / 00000000 [……x..x……]
SE3 hw/sw: 90000000 / 00000000 [x..x…………]
SE4 hw/sw: 00090000 / 00000000 […………x..x]
56 of 64 CUs are active. HW locks: 8 (R/W) / SW locks: 0 (R/W).
8 CU’s are disabled by HW lock, override is possible at your own risk.
The developer of this tweak, who goes by the name of TX12, said:
“In general, you can try to unlock some cores ONLY if you have at least one of the two rightmost columns filled with ‘x’-es.”
“On this example map, rightmost column (#1) is filled with ‘x’-es only, but second (#2) is not.”
“If none of the two rightmost columns is filled with ‘x’, you’re most probably out of luck and shouldn’t try this unlock method.”
“Or just try all the roms to catch some luck (not recommended).”
TX12 explained the entire process in a lengthy forum post and is available here. Interestingly, he created a script which creates three unique ROMs, and one of these called ALL will instigate the entirety of Fuji’s cores. Although, this hasn’t been achieved as of yet.
Preliminary benchmarks indicate a clear increase in graphical horsepower after applying the tool.
Please note that this doesn’t mean your card will be compatible and you should proceed with caution.
Thank you Video Cardz for providing us with this information.
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