@ -5,8 +5,7 @@ What is ethminer-0.9.41-genoil-1.x.x?
Formerly known as Genoil's CUDA miner, ethminer-0.9.41-genoil-1.x.x is a fork of the stock ethminer version 0.9.41. While native CUDA support is its most significant difference, it has the following additional features:
- realistic benchmarking against arbitrary epoch/DAG/blocknumber
- custom DAG storage directory
- auto DAG directory cleanup
- on-GPU DAG generation (no more DAG files on disk)
- stratum mining without proxy
- OpenCL devices picking
- farm failover (getwork + stratum)
@ -23,18 +22,32 @@ ethminer --help
### F.A.Q
1. Why is my hashrate with Nvidia cards on Windows 10 so low?
The new WDDM 2.0 driver on Windows 10 uses a different way of addressing the GPU. This is good for a lot of things, but not for ETH mining. There is a way of mining ETH at Win7/8/Linux speeds on Win10, by downgrading the GPU driver to a Win7 one (350.12 recommended) and using a [build that was created using CUDA 6.5](releases/cuda-6.5).
The new WDDM 2.x driver on Windows 10 uses a different way of addressing the GPU. This is good for a lot of things, but not for ETH mining.
For Kepler GPUs: I actually don't know. Please let me know what works best for good old Kepler.
For Maxwell 1 GPUs: Unfortunately the issue is a bit more serious on the GTX750Ti, already causing suboptimal performance on Win7 and Linux. Apparently about 4MH/s can still be reached on Linux, which, depending on ETH price, could still be profitable, considering the relatively low power draw.
For Maxwell 2 GPUs: There is a way of mining ETH at Win7/8/Linux speeds on Win10, by downgrading the GPU driver to a Win7 one (350.12 recommended) and using a [build that was created using CUDA 6.5](releases/cuda-6.5).
For Pascal GPUs: You have to use the latest WDDM 2.1 compatible drivers in combination with Windows 10 Anniversary edition in order to get the full potential of your Pascval GPU.
2. And what about the GTX750Ti?
Unfortunately the issue is a bit more serious on the GTX750Ti, already causing suboptimal performance on Win7 and Linux. Apparently about 5MH/s can still be reached on Linux, which, depending on ETH price, could still be profitable, considering the relatively low power draw.
2. Why is a GTX1080 slower than a GTX1070?
Because of the GDDR5X memory, which can't be fully utilized for ETH mining (yet).
3. Are AMD cards also affected by this issue?
Yes, but in a different way. While Nvidia cards have thresholds (i.e 2GB for 9x0 / Win7) of the DAG file size after which performance will drop steeply, on AMD cards the hashrate also drops with increasing DAG size, but more in a linear pattern.
3. Are AMD cards also affected by slowdowns with increasing DAG size?
Only GCN 1.0 GPUs (78x0, 79x0, 270, 280), but in a different way. You'll see that on each new epoch (30K blocks), the hashrate will go down a little bit.
4. Can I still mine ETH with my 2GB GPU?
2GB should be sufficient for a while, altough it's become a bit uncertain if we'll stay below 2GB until the switch to PoS. I don't keep an exact list of all supported GPU's, but generally speaking the following cards should be ok:
2GB should be sufficient for a little while, altough you will have to set the following environment variables (Windows example, use export on Linux):
```
setx GPU_FORCE_64BIT_PTR 0
setx GPU_MAX_HEAP_SIZE 100
setx GPU_USE_SYNC_OBJECTS 1
setx GPU_SINGLE_ALLOC_PERCENT 100
setx GPU_MAX_ALLOC_PERCENT = 100
```
I don't keep an exact list of all supported GPU's, but generally speaking the following cards should be ok:
AMD HD78xx, HD79xx, R9 2xx, R9 3xx, Fury.
Nvidia Geforce 6x0, 7x0, 8x0, 9x0, TITAN
Nvidia Geforce 6x0, 7x0, 8x0, 9x0, 10x0, TITAN series
Quadro, Tesla & FirePro's with similar silicon should be fine too.
5. Can I buy a private kernel from you that hashes faster?
@ -46,6 +59,15 @@ The default parameters are fine in most scenario's (CUDA). For OpenCL it varies
7. Is your miner faster than the stock miner?
In CUDA yes, in OpenCL only on Nvidia .
### Branches and versions
The master branch always contains the stable release. Currently that's 1.1.7. Then you may find branches like 110, 108, 120, whuich are either archives of previous major versions or beta releases of upcoming work.
# Releases
Windows x64 binaries can be found in the /releases folder.
Genoil
9 years ago