readme cleanup
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README.md
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README.md
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# Switch OC Suite
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[](https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html) [](https://gitter.im/Switch-OC-Suite/community?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
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[](https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html)
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Overclocking suite for Horizon OS (HOS) running on Atmosphere CFW.
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- Higher RAM clocks without proper timings could be UNSTABLE and cause graphical glitches / instabilities / filesystem corruption. **Always make backup before usage.**
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- Why no CPU/GPU OC for Erista?
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<details>
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- Tegra X1 on Erista is on TSMC 20nm HPM node, consumes much more power (~2x) and generates much more heat, compared to Tegra X1+ on Mariko (TSMC 16nm FinFET).
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- Erista Switch uses lower speedo (=== lower quality === higher voltage required) SoC from NVIDIA. You will NOT get comparable performance to NVIDIA Shield TV no matter what.
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- Snapdragon 810 (4 x A57 @ 2.0GHz + 4 x A53) also uses 20nm HPM, see how it plagued Android phones in 2014.
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- The board power supply is quite limited, even if you've done cooling mod.
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- You could spot battery draining at higher clocks under stress test, even with official 39W PD charger.
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- CPU / GPU performance at max clocks will be worse if power supply is not enough.
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- CPU OC (up to ~ 2.1 GHz, depending on your CPU bin) is available mainly for emulation, but it does NOT work out of the box.
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</details>
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## Features
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- **DRAM Overclock**
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- **[System Settings (Optional)](https://github.com/KazushiMe/Switch-OC-Suite/blob/master/system_settings.md)**
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- **TinyMemBenchNX**: DRAM throughput and latency test based on [tinymembench](https://github.com/ssvb/tinymembench)
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- **MemTesterNX**: A userspace utility for testing DRAM faults and stability based on [memtester](https://pyropus.ca/software/memtester/)
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- Now with multi-thread support and "stress DRAM" option, it should be able to test DRAM stability with adjusted timings.
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### Mariko Only
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- **CPU/GPU Overclock**
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- Safe: CPU/GPU @ 1963/921 MHz
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- It has been proved safe without charger (not reaching battery power draw threshold)
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- Unsafe: CPU/GPU up to 2397/1305 MHz
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- Unsafe: **NOT RECOMMENDED**
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- **Disabled by default**, toggle "Allow Unsafe Frequencies" on in overlay or add `allow_unsafe_freq=1` to `config.ini`
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<details>
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- Without chargers, CPU/GPU would be capped @ 1963/921 MHz or -/460 MHz (Emulator mode).
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- Without official chargers, GPU would be capped @ 1267 MHz.
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- Why **NOT RECOMMENDED**?
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- See `Current Flow` in sys-clk-OC overlay `Miscellaneous` (on battery) or measure power draw from charger yourself.
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- Currently, there are no protective measures from heavy power draw.
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- CPU: 2397 MHz @ 1220 mV (overvolting from 1120 mV)
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- NVIDIA Official Maximum: 1963.5 MHz
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- Maximum performance depends on CPU speedo.
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- You'd get somewhere between 2360 to 2390 MHz performance for real.
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- This is where floating point performance maxed out.
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- ≥ 2193 MHz will _ENABLE OVERVOLTING_.
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- GPU: 1305 MHz (no overvolting, less than official threshold 1050 mV)
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- NVIDIA Official Maximum: 1267.2 MHz
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- ~~Tested with deko3d compute shaders converted from Maxwell SASS assembly. Single-precision floating point (FP32 FFMA) performance maxes out at 1305 MHz.~~
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</details>
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- Power draw will be significant higher than what the mainboard was designed to tolerate at anything higher than 1963/921 MHz.
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- See [README for sys-clk-OC](https://github.com/KazushiMe/Switch-OC-Suite/blob/master/Source/sys-clk-OC/README.md)
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- **Modded sys-clk and ReverseNX**(-RT)
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