RE: FYI - Dual CPU, Dual Core, Dual Graphics Card Info

Note: My original post should read that I have the CRT connected to both my
laptop and my desktop! Sorry for the confusion.

"998R" wrote:

> Not too long ago, I searched and searched for information about the above
> entitled subject. I now have some first hand experience with all of the
> above, and I thought I'd share the information with you:
>
> Software/Hardware:
> XP Pro w/SP2.
> MSI K8N Master2-FAR MOBO (the only dual processor SLI capable MOBO currently
> on the market...I think)
> 2 AMD Opteron 280 dual core processors
> 2 nVIDIA GeForce 7800 GTX 256MB SLI capable graphics cards
>
> Observations:
> 1. XP Pro will recognize each processor, and each core, as a "separate"
> processor. This is confirmed when you open Windows Task Manager and view the
> "Performance" Tab. Unfortunately, none of the CPU Usage History graphs are
> labeled, so you have no idea which graph represents which CPU or which core.
> The CPU Usage scale (the vertical scale to the left of the CPU Usage History
> graphs) appears to combine the usage of all 4 (in this case) "CPUs" into one
> percentage reading.
>
> 2. The "Applications" and "Processes" tabs display information as before
> (i.e. as if you had one CPU). No application or process is identified by the
> core upon which it is running.
>
> 3. There doesn't appear to be any way to "assign" specific functions to a
> specific core. My guess is that XP Pro does this internally so that end
> users (like myself!) can't screw something up. Each core appears to be doing
> something...just what, I couldn't tell you.
>
> 4. I assume that some programs (i.e. Adobe Premiere) will assign specific
> functions to each CPU, but this will be a specific and unique function of any
> program which can recognize multiple CPUs and dual core processors.
>
> 5. Scalable Link Interface (SLI) video cards may have been designed to
> support high resolution games, but they serve a useful purpose for
> home/business applications. Software (in this case supplied by nVIDIA,
> controls whether both cards work together to combine both GPUs for faster
> video rates (only 1 monitor can be supported in this mode, with extremely
> high FPS rates), or whether they function as two "separate" video cards, each
> with their own GPU. Since the 7800 GTX has 2 DVI-I video ports, each card
> can support two monitors, for a maximum of 4 running at once.
>
> 6. Now the neat part. Each DVI-I port supports a digital or an analog
> signal. Therefore, you can run any combination of digital or analog monitors
> on your card. In my case, I have one NEC LCD 2060NX connected to each 7800
> GTX, and one Sony (Dell) CRT connected to one of the 7800s. The CRT connects
> to the video card by using an adapter at the card end of the VGA cable to
> convert the standard analog cable end into a DVI-I compatible plug which is
> recognized by the video card.
>
> 7. Now the really neat part. My Sony monitor is a 5 year old 21" CRT. It
> has 2 VGA outputs at the rear of the monitor, and an A/B switch on the front
> panel. So...I have the CRT connected to both my laptop, and my laptop. I
> can switch between the two just by flipping the A/B front panel switch!
>
> 8. Each monitor can run at its own resolution, and its own individual
> profile (if you calibrate them). In my case, I do video editing and
> production for my company. My 2 NEC LCDs run at their native 1600x1200
> resolution. I change the CRT resolution from 1024x768 to 800x600 to test how
> displays will appear on other end user computers who run more "standard"
> resolutions. So, I can maximize my screen real estate by running my
> authoring programs on the LCDs, and view the preview video on the CRT.
> Extending my desktop across all three monitors allows me to move my mouse
> between all three with ease!
.

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