Full SM unlock
More actions
| Proven 10 GB | |
| Driver | cmpunlocker-patched driver (610+) |
|---|---|
| Unlock build | 170hx-rir-tool + software IFF |
| Steps | Full SM unlock |
| Source | Discord message |
| Confirmations | Reproduced by @ghostinthedatacenter_87281 (10 GB), 2026-10-19 · details |
The stock card exposes 70 of 128 SMs. There are three tiers:
- 74 SM on both cards: cmpunlocker's +4 SM step (70 + 4). This is the ceiling for the 8 GB card.
Source: @lia_oc, 2026-10-22
- 74 to 80 SM on the 10 GB card: software only, no fuse override needed.
Source: @djpandaman, 2026-10-10
- 80 to 128 SM on the 10 GB card: needs
EN_SW_OVERRIDE, which needs the RIR fuse burn.
Why the 8 GB card cannot go past 74
The extra TPCs beyond 74 are controlled by OPT_TPC_DISABLE, which is burned to 1 on the 8 GB card, and
there is no free RIR to override it. Source: @djpandaman, 2026-10-10
As of 2026-10-26 there is no public SM unlock beyond 70 + 4 for any 170HX except the 10 GB RIR path.
Source: @riko6253, 2026-10-26
10 GB: how far it goes
mrpandagod took a single 10 GB card from 74 to 80 to 94 to 108 to 122 SM, FP16 roughly 12-14 to 22 TFLOPS.
Source: @djpandaman, 2026-10-09
lxwx got the last cores by overriding OPT_TPC_DISABLE ("just override OPT_TPC_DISABLE"), then reached
128 SM at full clock. Source: @lxtend, 2026-10-12
Source: @lxtend, 2026-10-17
Several owners (GhostInTheDatacenter, orrorin, Waypoint, Feralzi) reached 122-128 SM after the RIR burn, starting from
170hx-rir-tool and feeding the notes to an agent. Source: @ghostinthedatacenter_87281, 2026-10-26
The silicon lottery
GPCs/FBPAs marked defective are genuinely defective; enable only the disabled ones, and mask off the defective TPCs within a defective GPC. Source: @zorg33, 2026-10-22 Colo A/B-tested SM pairs and got 126 working SMs on a card where only one SM pair in a "defective" GPC actually failed. Source: @colo2442, 2026-10-22
Known issues
- Warning Power cap above 80 SM. The moment an SM on a previously disabled GPC is enabled, the
self-reported power becomes unreliable (readings above 400 W on a 250 W VBIOS) and the memory clock is forced down to about 1100 MHz with a large FP32 drop. Source: @djpandaman, 2026-10-13 mrpandagod says he later resolved the wattage issue (fix not posted); the threshold starts at 80, not 90, which matters so people's agents are not misled. Source: @djpandaman, 2026-10-22 See Cooling and power for undervolt / shunt options and Troubleshooting.
- Early SM-unlock attempts crashed the card until the method was refined (lxwx, with help from mrpandagod by DM).
- The method is derived from a leaked internal driver archive (
integdev_gpu_drv.rar, 18.87 GiB, findable
by file name on torrent sites) plus an agent, and from Humvee55's method notes (message.txt): his RIR plus software-IFF route, meant to be fed to an LLM to fill the gaps (see RIR fuse burn). lxwx's own contribution was finding how to run all 128 SM at full clock. Source: @lxtend, 2026-10-17
Source: @scallion_9883, 2026-10-16
Status
128 SM reached and reproduced by several 10 GB owners, so Proven on the 10 GB card. The 8 GB card past 74 is Contested / no public path. See the confirmation below.