AGP 8X on AGP 4x

ZrByte · 13-07-2004, 11:58

Well I was under the impression that an agp 8x graphics card would work fine on an agp 4x mobo so I bought a Radeon 9200SE 64MB 8X AGP to go on my Slightly ageing Jetway 663AS Pro mobo, and wouldnt you know, it wont post properly. Since I will only be using it as a media PC / Server for my Wireless LAN, high powered graphics arnt important, only problem is that the only spare grapic card I have is A VooDoo 5 5500 PCI and it has no TV-Out socket so its no use in this machine.

The system is functioning, I know this because when I press the power button it switches off rather than having to hold the power button like you do when a system locks up. I simply get no picture on it.

I tried my old VooDoo 5 5500 PCI on the same mobo to make sure the mobo hadnt finally died and it POST perfectly.

Suffice it to say im a little disappointed since I was under the impression that an AGP 8x card would work fine on an agp 4x mobo

There is an alternative ofcourse.....
I could swap my GF4 Ti4200 AGP 4x out of my main computer and put it in my media machine temporarily (until I can acquire an AGP 4x alternative with a TV-Outor something better for my main PC like a R9600XT), the only problem is that will mean I will have to use the R9200SE in my machine.
How slow is the R9200? I dont play many 3D games so I could probably cope with the slower card though I like to play C&C generals quite a bit and I dont think it would be upto the job.

Any help, tips or advice welcome

BizBo · 13-07-2004, 12:07

9200 is about the same performance as a Gf4, maybe a tad slower maybe a tad faster. I'd prefer the 9200....

Richard M · 13-07-2004, 12:11

The 9200SE is a fairly slow card, about the same performace as a GF4 MX440 - not a Ti.
It would be fine with C&C though, or most games as long as you don't crank the graphics up too high.

SOSAGES · 13-07-2004, 12:12

an agp 8 card will happily work on an agp 4 mobo it can work at any agp speed slower that its max try changing the mobo to agp 2x

Richard M · 13-07-2004, 12:19

Quote:

Originally Posted by SOSAGES

an agp 8 card will happily work on an agp 4 mobo it can work at any agp speed slower that its max try changing the mobo to agp 2x

Not really.
I have a (AGP 4x) SiS-based computer with an AGP 4x MX440 running in it at full speed, I bought a 9600XT for it a while ago but it refused to work, even though it runs fine in my Asus NForce 2 board.

ZrByte · 13-07-2004, 12:28

Tried....
Auto
AGP 4X
AGP 2X
AGP 1X

All to no avail.
There arnt even any error beeps, the system seems to think its working fine

Though I have had a new idea....
Im gonna go upto my sisters house and swap the R9200SE for the GF3Ti I put in her machine, they bareley use the machine anyway and on the rare occasions they do they dont use it to its full potential.
My only worry now is that thiers might not take the R9200SE either, It is a compaq afterall

Richard M · 13-07-2004, 13:36

The GF3 Ti is actually a faster card...

Matth · 13-07-2004, 15:23

http://www.jetway.com.tw/evisn/downl...os/index-1.htm - are you up to the latest available motherboard BIOS (A15 - 12/20/01 for the 663 AS/Pro) ?

Is the PCI card still in place when you try the AGP?

It SHOULD be possible to use a an 8x capable card in a 4x slot - and ATI's chart has the 9200 as being compatible with 2x (3.3v), 4x (1.5v) and 8x (0.8v) signalling - one place older motherbords often fall down on, is AGP slot power requirements - as these tend to be uprated from standard to standard - I presume this card does not have a molex power feed?

ZrByte · 13-07-2004, 16:24

Quote:

Originally Posted by Richard M

The GF3 Ti is actually a faster card...

I know, thats the beauty of my new idea

Quote:

Originally Posted by Matth

http://www.jetway.com.tw/evisn/downl...os/index-1.htm - are you up to the latest available motherboard BIOS (A15 - 12/20/01 for the 663 AS/Pro) ?

Is the PCI card still in place when you try the AGP?

It SHOULD be possible to use a an 8x capable card in a 4x slot - and ATI's chart has the 9200 as being compatible with 2x (3.3v), 4x (1.5v) and 8x (0.8v) signalling - one place older motherbords often fall down on, is AGP slot power requirements - as these tend to be uprated from standard to standard - I presume this card does not have a molex power feed?

Yeah the BIOS is upto date, I flashed it myself before my mate gave me this mobo.
Ive tried the AGP card with the PCI in and with the PCI out. Ive also made sure the bios is set to init the AGP display first.
By Molex power feed do you mean the same power connector a hdd or similar device might use? if so then the agp card doesnt have one (The V5 does though).