Wednesday, May 9, 2012

Video Card Troubles go on forever?

Accidently shorted out my video card and ordered a replacement via the web. It was a Radeon ATI, two weeks later, they said it wasn't compatible with my system. I asked a question what was a good video card for the money and good some good answers, but they were for PCI cards and not AGP. Now on the third card and from the box, it states the requirements and I meet or exceed them.



This is an XFX Geforce 7600 GS AGP card. The second card was an EVGA Geforce 7600 gs which didn't even want to fit into the slot without force which I was reluctant to do for fear of cracking the motherboard.



Anyone have experiences, bad experiences with these cards? And, what's the likely hood that I've received three cards that are defective?



I'll also mention that in the bios I reduced the apperture from 8x to 4x, the memory to 128 then 64, and turned off all the read write features that might have prevented it from even booting and that didn't even help it form a post code.|||Depending on your motherboard, AGP has different voltages. Older boards support only 3.3v cards, while some newer boards support only 1.5v cards. There are some boards that support both. The newest specification is for just 0.8 v. Supposedly they will fall back and accept 1.5v I looked for info on the XFX but did not find a voltage reading. The EVGA also did not have a voltage reading but said that it was AGP 3.0 so I am going to assume 0.8v. Check your motherboard and see what it supports. If it says only AGP or AGP 2x then you may be limited to 3.3v cards. Support for AGP 4x will get you to the 1.5v range and AGP 8x should be 0.8v.



There is also an AGP Pro slot. This slot has some different requirements and will accept a standard AGP card but will only work if it has a special tab. Check out the links below for some details about the AGP edge connectors and their differences between voltages. Good Luck.|||theres lots of settings you can change to tweak graphic cards but the problem here is you shouldnt have to force a agp card in a agp slot

the agp interface is the most complicated of all 3 graphic interfaces(agp.pci-e,pci-bus),this is because over the ten years agp has been around there has been many types of agp versions and bandwidths,these include....

1.agp 3.3v

2.agp 1.5v

3.agp universal

4.agp pro 3.3v

5agp pro 1.5v

6.agp pro universal

bandwidths...x1 / x2 / x4 / x8

AGP cards are backward and forward compatible within limits. 1.5 V-only keyed cards will not go into 3.3 V slots and vice versa, though "Universal" slots exist which accept either type of card. AGP Pro cards (rarely used) will not fit into standard slots, but standard AGP cards will work in a Pro slot. Some newer cards like nVidia's GeForce 6-series or ATI's X800-series only have keys for 1.5 V to prevent them from installing in older mainboards without 1.5 V support. The graphic cores can only handle 0.8 V for AGP8x and 1.5 V for AGP4x and will be damaged by 3.3 V slots. Some of the last modern cards with 3.3 V support were the nVIDIA GeForce FX series and the ATI Radeon 9500/9700/9800(R350) (but not 9600/9800(R360)).

However it is important to check voltage compatibility as some cards incorrectly have dual notches and some motherboards incorrectly have fully open slots. Furthermore, some poorly designed older 3.3 V cards incorrectly have the 1.5 V key. Inserting a card into a slot that does not support the correct signaling voltage may cause damage.

i hope this has helped,any problems let me know

good luck mate!

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