Welcome to the forum, Banner.
I'm not sure how many other people use Lucid Virtu, so you may not get many (or any) specific responses.
The SB GPU cannot fold. One goal of the continuing development is an OpenCL core that can run on any OpenCL-capable hardware, but that hasn't happened yet. As of now only Nvidia and AMD GPUs can fold, and they have separate cores (cores are the software that runs the calculations).
Assuming you're running v6 of the client (if you got it from this page
, then that's what it is), the viewer in that never worked properly. v7
does have a working viewer if you care enough about that feature. It's still in beta but it's fairly stable. Both clients use the same core, so there's not real performance impetus to upgrade, just cosmetic and possibly ease-of-use considerations.
The xxxxx/50000 does indicate progress, but not in the terms you think. Nothing is really referred to as a Work Packet; the thing you download, crunch, and return is referred to as a Work Unit, and you can only download one at a time (not counting v7, where you can download a second one as the first one nears completion, but still nowhere near 50k at a time). The number does indicate completion, but I forget exactly what units it's in.
Most people use Points Per Day to measure their speed; the basic way to do that is to take the point value
for the current project, observe the time it takes to complete each percentage of the WU (you can find it in the log file, called FAHlog.txt), and extrapolate the results to figure out the total points you could expect to earn in a day. Points Per Day are normalized on the benchmark hardware; for example, Nvidia GPU projects all earn the same PPD on the benchmark GTX 460 no matter how long they take. The other numbers are not, so while it could help you determine speed over the course of the same WU, comparison between WUs from different projects doesn't say much unless you're talking about PPD. There are software programs that can do PPD calculations for you; see the Tools thread in the 3rd Party Software sub-forum for a list of them.
If you wanted to determine GPU utilization, there are several tools that could do it. I'm almost certain GPU-Z or MSI Afterburner would indicate utilization; I know EVGA Precision does.