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Will a pcie 2.0 card work with the pcie 1.0 slot

Last response: in Graphics & Displays
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August 17, 2010 4:12:53 PM

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
a c 169 U Graphics card
August 17, 2010 4:32:03 PM

PCI-E 2.0 is backward compatible with PCI-E 1.0,so it should work fine
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August 17, 2010 4:36:45 PM

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...
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August 17, 2010 7:17:04 PM

ok wait can u clear this thing for me... the pcie slot is a pcie x1 which is like the size of ones thumb so can a pcie 2.0 card go in it...
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a b U Graphics card
August 17, 2010 7:19:23 PM

a gpu will not fit in a pcie x1 slot
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a c 376 U Graphics card
August 17, 2010 7:32:44 PM

You actually can use a x16 card in a x1 slot but you would need to cut the end of the slot so the card fits...
So your motherboard has no PCIEx16 or AGP slot? Does it have a regular PCI slot available or just PCIE x1?
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a b U Graphics card
August 17, 2010 7:34:54 PM

but it's not practicle
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August 17, 2010 7:44:33 PM

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...
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a c 376 U Graphics card
August 17, 2010 8:03:33 PM

It should be fine. I don't think a x1 port is going to limit something as low powered as an HD4350.
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August 19, 2010 4:31:52 PM

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.
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August 19, 2010 6:25:33 PM

nope its a PCIe x1 slot...even worse!!!
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a c 376 U Graphics card
August 19, 2010 7:09:40 PM

I would just cut the slot rather than spending twice as much for an open box HD4350
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a b U Graphics card
August 19, 2010 7:39:23 PM

^ Have you ever tried that?

Theoretically could yout put a cheap nvidia card in a 1x PCI-E slot for physx support or would it be worthless being in a 1x slot?


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a b U Graphics card
August 19, 2010 8:22:47 PM

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....
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August 19, 2010 9:43:24 PM

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....
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August 19, 2010 9:48:58 PM

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
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a c 376 U Graphics card
August 19, 2010 9:55:04 PM

w_angad said:
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....

The 25% performance loss is on a card more than 10x more powerful than the HD4350. The HD4350 will not be affected at all.
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August 19, 2010 10:00:49 PM

thanks jyjjy...i will then most likely make my purchase by day after or so...
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a b U Graphics card
August 19, 2010 11:21:38 PM

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.
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August 20, 2010 9:09:29 AM

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..
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August 20, 2010 9:11:53 AM

wats worse is that im getting only 30$ for selling my ole comp... :(  ...i rather keep it forever...
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a b U Graphics card
August 20, 2010 2:03:27 PM

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.
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August 20, 2010 5:06:23 PM

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....
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a b U Graphics card
August 20, 2010 5:35:09 PM

Could be, I'm not an HD video expert, but I tried any and everything I could before giving up on that old P4. I use klite in my 2 other machines and never had any problems playing the same HD movies I was trying to play on the p4.
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August 20, 2010 6:31:20 PM

you should try the divx codec (new version) or even cyberlink 10...in fact cyberlink 10 is the best coz it upscales vids very nicely and even uses HD lighting effect on SD vids also...and if u have a dual core you can try that...ill buy the HD 4350 ...i know im may risk spending more for the comp and not get much out of it..but i really want to spend on the lappy instead of upgrading my desktop...but thanks a ton for the advice though..will let you know how it turns out...
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a c 376 U Graphics card
August 20, 2010 7:17:33 PM

benski said:
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.

I think the problem was both. The P4 couldn't handle it but your card could. What you wanted to use was software that supports GPU accelerated decoding.
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a b U Graphics card
August 20, 2010 7:41:39 PM

^Even after I installed codecs and was running in WMP11 the video still looked like it was less than 10 fps, but maybe that was a software thing and not the cpu because it was only showing like 17%. But running on VLC or anything flash was totally out of the question. 360p hulu videos in a quarter of the screen would peg the cpu at 99%. VLC could play 480p and below well but pegged the cpu on anything above that.
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August 20, 2010 9:29:30 PM

you should never ever ever use vlc for even 720p it uses libacodec...absolutely abysmal...even playing on my brothers dual core its sad...
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August 20, 2010 9:31:02 PM

if u want a software that can accelerate video decoding by the GRAPHICS card....u can use core avc it has cuda acceleration for nvidia cards...its the thing that games use...
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August 21, 2010 4:48:52 AM

At first, u will need to know the diff between, PCIx16 1.0, PCIx1...
Why so many people confuse u...
This is my spec.
P4 3.0Ghz Prescott HT
D915gev MB
4G DDR2-800
9800GTX+ 512mb
Seagate barracude 1TB 7200.12 (win 7 64 bit)
MAxtor 80G (win xp pro 32bit)
CM GX-550
I can play 1080i on plasma 42" smoothly
Just a reminder, remember to get just a PCIx16 2.0 or 1.0 cards,
I tried to install 2.1 card but failed. hear about the 5000 series cards with never work in 1.0 slot also...
I got a MSI 4870 412mb OC version running in my system too.
maybe u want to post ur MB model so we can check for u the slot problems...
At first ur tread state clearly to check PCIx16 1.0 and 2.0 problems, but ended up with PICx16 or x1....
DUn know what happen...
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