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Well to start off I’m not advising buying two 3080s. I haven’t seen the benchmarks, and on top of that the 3080 doesn’t support SLI so if you do buy two of them
by valine 6y ago
Well to start off I’m not advising buying two 3080s. I haven’t seen the benchmarks, and on top of that the 3080 doesn’t support SLI so if you do buy two of them you will need to be using software which can utilize two independent GPUs.
If you’re just wanting to learn machine learning you don’t need anything particularly special. I think you would be happy with GTX 1070. There is also the cloud computing route where you basically rent the gpu from AWS. That will be initially more cost effective than buying your own hardware.
One thing to keep in mind if you do go with the 3080 is the power consumption. Ampere cards are going to be much more power hungry than previous generations, and you will need to budget about 320W just to the graphics card. The recommended power supply for the 3080 is 850W.
- posix_compliant 6y agoNvidia recommends 750W for the power supply.
- secabeen 6y agoThat is true, but it all depends on how much the rest of your system uses. If you just have a mid-tier CPU and SSD, you may find that the rest of your system only uses 200W, and you can fit a 3080 on a 600W power supply. There are multiple reports of high-quality 600W PSUs working, so YMMV.
- leeter 6y agoIt's worth noting that this recommendation has nothing to do with delivered power.... a 500W can handle most systems on delivered power. This has to do with transients, the 3000 series cards have some massive transients that can easily trip OCP protection on powersupplies not designed for that kind of transient. A 700W powersupply is able to handle those transients much better than a 500W PSU is.