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Poor performance from PCI graphics card

Last response: in Graphics & Displays
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July 7, 2010 1:43:22 AM

Hi,

I have a dell vostro 200 slim desktop, with a 8600GT card. That woks fine and runs my main display and my LCD TV. I wanted to run a 3rd display 1280x1024 monitor which I could use for watching videos on while working so I wouldn't have to turn on my 50inch LCD TV.

I tried using the on-board graphics together with the 8600GT but the o-nboard graphics get disabled with the PCI-E 8600GT plugged in. So I bought a PCI 8400GS 512MB graphics card. From what I have seen that is the most up to date PCI graphics card available however the performance is terrible, scrolling down a web page displays bad redraw and the same goes for video especially full screen.

The drivers that are installed are the same that are installed for the 8600GT.

I don't want to messa round with changing too much if it's going to be in vein and that I must just accept that PCIx1 is just really slow. I'm just not too sure though why the performance could be so bad.

Help and suggestions needed.
Many thanks,
H.

More about : poor performance pci graphics card

a c 189 U Graphics card
July 7, 2010 6:26:03 AM

PCI is a really slow card, plus you're running it with 3 monitors, that's a hard job...
a b U Graphics card
July 7, 2010 3:13:51 PM

+1

Consider also that it's a Dell computer with vista.

How old is the computer ?
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a b U Graphics card
July 7, 2010 3:50:04 PM

PCI GPU's are ancient; frankly, your performance for that GPU sounds about right.
a b U Graphics card
July 7, 2010 4:31:27 PM

pci is really slow with a capacity of 533MB/s
but pcie 1.x has a bandwith capacity of 4GB/s
you can just imagin how slow it is...
July 7, 2010 4:50:28 PM

wa1 said:
PCI is a really slow card, plus you're running it with 3 monitors, that's a hard job...


My PCI-E 8600GT powers 2 monitors and the PCI 8400GS powers one monitor.
July 7, 2010 5:09:15 PM

dextermat said:
+1

Consider also that it's a Dell computer with vista.

How old is the computer ?



It's a dell vostro 200 (about 3 years old)
Intel E4400 running at 2.66GHz per core
5GB RAM 667MHz FSB

As I mentioned in my first post even just scrolling down a web page, the redraw is quite apparent.
July 7, 2010 5:11:01 PM

Oh, and I'm running Windows 7.
July 7, 2010 5:12:47 PM

Yay, I remembered my old account details.

hatski = hatimh.
July 7, 2010 5:39:03 PM

try running just the PCI card and see what performance you get out of it by itself with 1 monitor. I suspect you have way to much going on for the processor and its choking on it. The cards are comparable in performance the 8400gs actually has a higher fill rate, but the bus handicaps it. You are shooting for the moon with a submarine.....
July 8, 2010 12:42:30 PM

I just tried your suggestion and it still runs badly. It must be down to the drivers being good for the PCI-E 8600GT but bad for the PCI 8400GS.

Can I run my onboard graphics card and my PCI-E 8600GT together> The on-board seems to get disabled when I plug in a graphics card.
!