Will a pcie 2.0 card work with the pcie 1.0 slot

w_angad

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I have a old computer with a intel 2.6 HT processor and 1.5gb ddr1 ram and a pcie 1.0 slot. so i wanted to buy a graphics card that will play high definition vids very smoothly and it should also remove the load from the cpu. i was thinking of ati radeon 4350 pcie2.0 but i dont know if it work with my pcie1. slot as it is smaller in size...im sorry im a amatuer in this stuff...also can anyone name a few graphics card for me o play HD stuff very smoothly and will the above config suffice to play HD movies...thanks in advance
 

w_angad

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thanks maziar...but i hope i wont compromise much right with the 1.0 slot...i mean i will be able to play 1080p vids smooth right with the radeon 4350 and a 2.6 intel p4...
 

w_angad

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no it has one pciex1 and 2 pci its a intel d915glvg chipset...but there is a card that is perfect for pcie 1.0 and its ati 4350 but i hope it will still manage to play HD vids very smoothly like it would play on the pciex16 slot...
 

sl83r

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Do you mean your board has a PCIe x16 v1.0 slot, and are asking if a v2.0 card will work in it? If so yes, v2.0 is backward compatible with v1.0, the card will simply be limited to what the v1.0 spec is capable of.
 

benski

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Wow that's suprising. I was just reading that Nvidia drivers now disable physx support if you have an ATI card installed so I guess that would kind of defeat the purpose.

Wonder if anyone has tried x-fire or sli using an x16 and x1 slot....
 

w_angad

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ok i can get the 4350 at te same price as the pcie x16 version for my mobo having pcie x1...the vendor says he will fix and give it infact he said he could do it with nvidia 8400 also so i guess that part should be taken care of...what intersts me is that if there is a 25%reduction in performance will it affect my watching 1080p vids coz thts my whole and sole purpose of buying the card....
 

w_angad

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and intel says the pcie x1 is capable of 250mb/s speed of transfer both ways individually...so i guess tht sould be sufficient right for HD vidoe playback and smooth decding
 

The 25% performance loss is on a card more than 10x more powerful than the HD4350. The HD4350 will not be affected at all.
 

benski

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YOU WILL NOT BE ABLE TO PLAY 1080P VIDEO (at least I don't think so)!

I had a single core p4 3.0, agp 4670 and 2 gb ddr1 400 and I still couldn't run full screen video at 1080 p without getting a horrible frame rate, and don't even think about watching hulu videos, no matter how good your video card the processor won't be able to handle it.

My recommendation would be not to throw any more money into that PC if watching 1080p video is your goal. I was trying to use that old p4 as an HTPC but ended up selling it dirt cheap after I had spent quite a bit of money on a new video card and new PSU to support it because the video was just too choppy in HD. I ended up building a dual core with descent nvidia 7050 built in graphics for an HTPC in the bedroom for under 200 bucks not including O/S, and you can buy modern desktops for less than 300 bucks with O/S installed these days.

Just my $0.02.
 

w_angad

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would have done that...but i want to invest in a laptop in the next coming months which is why i wanted to divert my upgradation funds to the lappy....but as far as i have read reviews about hd4350 being tests on low end p4 comps it plays HD vids smothly coz of its unified video decoding (it has a special h264 deconding hardware to offload the processor of much burden)...but even your 4670 has tht...are you sure it will not work properly..
 

benski

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Maybe it was just the card I had but I tried everything I could think of and never got an acceptable framerate in 1080p, and the 4670 at 8x agp should be alot better than the 4350 on 1x pci-e. Maybe it was a software or driver issue and you'll have better luck, but I was convinced the proccesor just couldn't handle it.
 

w_angad

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it could also be coz of using wrong codecs like klite and ffmpeg...they are pathetic at playing h264 and must never be used...i tested those codecs on a dual core with nvidia 8400 gs which has pure video hd technology and were giving lag even in that and at the precise points which my present comp gives...so codecs do play a big role too....