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  PCI-Express 16x versus AGP 8X 
 
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John Nljil Oct 17, 2004, 07:46pm EDT Reply - Quote - Report Abuse
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Hello,

I have an ATI Radeon 256Mb 9600XT and a Gigabyte 8i915P pro duo sk775 motherboard. My question is that my graphic card is AGP and the motherboard has 2 PCI-Ex, 1 PCI-Ex 16x and 3 PCI. In my shop said that the graphic card has to put in PCI-Express 16x, but it doesn't work.

Anybody knows if PCI-Express 16x is compatible with AGP?

Thank you very much
KTKGS


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DarK_SlayeR Oct 17, 2004, 08:14pm EDT Reply - Quote - Report Abuse
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>> Re: PCI-Express 16x versus AGP 8X
I heard that it is compatible, but only if you have an adapter to convert it over to the PCI-Express standard.
I can't really be sure, though. Can anybody offer anything?

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Kash Oct 17, 2004, 08:38pm EDT Reply - Quote - Report Abuse
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Edited: Oct 17, 2004, 08:39pm EDT

 
>> Re: PCI-Express 16x versus AGP 8X
There is ONE motherboard that supports AGP and PCIe x16 (pronounced "bi-16" ). It does it by way of adapter, but do NOT do it. At ALL! It is known by many reviewers, and even the manufacturer has a warning about it, that doing this dramatically decreases the life of your AGP card. It is meant only as a filler slot if you don't have a PCI-e x16 graphics card available. I would recommend that, if you don't have the PCIe supported board yet, do not buy it, or the parts for it. Stick with the system you have now and wait about 6 months or so down the road. If you HAVE already bought the parts and have the 9600XT still in the box, unopened, then return it to the store for a refund, and go buy a PCIe x16 supported video card from someplace like newegg.com.

The price of a 9600XT on newegg.com is about $150-$170.... For between $50-$70 more, you can get a 6600GT PCIe x16 card. It's a VERY fast card, with 8 pipelines, 128-bit memory, and GDDR3 (very sweet memory, especially for oc'ing). It has been known to perform on par, if not better, than a 6800nu, and still perform better than an x800 Pro on benchmarks, so you know the video card processing is there, as long as you have a CPU and memory bandwidth to support the speed.

Sincerely,
Lord Coldfire

EDIT: I see already that you have bought the motherboard. If at all possible, return the video card and get a 6600GT from newegg.com or zipzoomfly.com (also known to most as ZZF). You WON'T be disappointed.

Sincerely,
Kash

AMD AM2 3600+ Brisbane (65nm), DFI Infinity UltraII-M2, 1GB Wintec AMPO DDR2-800 @ 667, Sapphire X1950 Pro, 250GB WD SATA II, 500W Coolmax PSU, Logitech MX500, Gateway PS/2 keyboard (circa 1999)
Michael C Oct 17, 2004, 11:01pm EDT Reply - Quote - Report Abuse
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>> Re: PCI-Express 16x versus AGP 8X
It has been known to perform on par, if not better, than a 6800nu, and still perform better than an x800 Pro on benchmarks, so you know the video card processing is there, as long as you have a CPU and memory bandwidth to support the speed.

I truly cant agree with that. The 6600GT's performance just plumits when the higher resolutions hit, the 6800nu can keep its ground. otherwise the 6600GT is a good card, but not as good as the 6800nu or X800Pro.

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Kash Oct 18, 2004, 12:47am EDT Reply - Quote - Report Abuse
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>> Re: PCI-Express 16x versus AGP 8X
It has been. Maybe not at higher resolutions, such as 1280x1024 or 1600x1200, but it's for obvious reasons: pipelines.

6600GT's 8pl versus 6800nu's 12pl: There's no comparison at higher resolutions. But I usually play at 1024x768 or 1152x960 (I believe that's the res, and only if it's available). I would still rather go with the 6600GT for AGP rather than the 6800nu, unless I have the money...

In which case, I would research which 6800nu's have had the best luck unlocking pipelines, and go from there... The memory bandwidth wouldn't be the same as a 6800GT or 6800 Ultra, obviously, but at least the pipelines are there (possibly).

Sincerely,
Lord Coldfire

Sincerely,
Kash

AMD AM2 3600+ Brisbane (65nm), DFI Infinity UltraII-M2, 1GB Wintec AMPO DDR2-800 @ 667, Sapphire X1950 Pro, 250GB WD SATA II, 500W Coolmax PSU, Logitech MX500, Gateway PS/2 keyboard (circa 1999)
thomas bosley May 09, 2005, 02:51am EDT Reply - Quote - Report Abuse
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>> Re: PCI-Express 16x versus AGP 8X
i have a new pc and iwant to upgrade my graphics. at the moment my intel 82915g is struggling to run quality games. It is pci express but intel cards arent compatible with most games. My intel 915g motherboard has a pci ex 16x slot so to upgrade do i simply just buy a better pci ex 16x card?


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