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Title: gigabyte gtx660 oc low Mhash Post by: elektrax on May 08, 2013, 06:12:50 PM Hello, I am your newest newbie :)
I have most of my stuff going good, except for on my new GigaByte GTX660 OC card. I only produces about 60 M/Hash with builtin OpenCL in GUIminer and about 70 using cgminer. But, my old 8800GT does 28 M/Hash, so something must be wrong ? The GTX660 is pretty recent but the 8800GT must be 10 years old soon? I have two Sapphire 6790 cards crunching at about 400 MHash though ;) TL;DR: New and shiny GTX660 gives 70 MHash, but ancient 8800GT gives 28MHash, wat do ? Edit: Also tried the separate CUDA miner (rpcminer-cuda.exe), it was not any better. Title: Re: gigabyte gtx660 oc low Mhash Post by: nairb131 on May 08, 2013, 06:22:12 PM Nvidia cards are not good for mining. CUDA mining should make it a little better but not by much.
https://en.bitcoin.it/wiki/Mining_hardware_comparison#Nvidia If you look there you can see that none of the Nvidia cards really hold their own. This is due to the way the architecture of the cards works. Title: Re: gigabyte gtx660 oc low Mhash Post by: elektrax on May 08, 2013, 07:13:34 PM Wow, I had no idea it was _that_ different. I did honestly expect the 660 to deliver relatively much more compared to the 8800.
Thanks! Edit: Oh, btw CUDA helped a tiny bit, but apparently it doesnot support Stratum. Using CGMiner now. |