I installed the new 460W power-supply and was pleased to see that it had a 6-pin power connector that would plug directly into the 9800GT without an adapter.I was initially confused by the air-flow in the Nvidia card, but discovered that the fan pulls air into the card housing and it vents near the blanking plates on the back of the case. As a result, I pulled the two neighboring blanking plates out (not shown in picture) and it seems as if a fair amount of heat is now expelled out of the case despite the power supply fan trying to pull it in. There is no case fan in this PC and I will monitor temperatures carefully for a couple of days. At the moment, the GPU's core temperature seems to sit around 62'C with an ambient temperature of 50'C.
Once again I have run into the anomaly where the Boinc client wont recognize the CUDA card when it starts. I have to close the client and restart it with a "sudo /etc/init.d/boinc-client start" command (the same as the 8600GT installation). This is a minor irritation as the 9800GT machine will run for the entire work week before being turned off. I have a suspicion that this may have something to do with the user "boinc" being
added to the "video" group but not having sufficient rights.Anyway, put the case back together after checking to see if it all started and booted OK, and am happy to see SETI work-units being dispatched in 19 minutes on average. This is under half the time taken by my 8600GT with the same OS.
On a different topic, Ubuntu officially release their 9.04 version in 13 days. I am running the beta 32-bit version on the IBM server and it appears to have some nice features and refinements over the current 8.10 version. I will re-do the OS on my home computer (the AMD X2 with the 8600GT) but will leave the 9800GT's OS on 8.04 as it is a "Long term support (LTS)" version and it is very rare that I even log into this machine. The proxy and backup functions can all be controlled via an Apache webserver interface.
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