gigabyte gtx660 oc low Mhash

[elektrax]

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.

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[nairb131]

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.

[elektrax]

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.