[mythtv-users] Combined Atom FE/BE /w GT220 ?
Kevin Ross
kevin at familyross.net
Wed Aug 18 16:37:41 UTC 2010
On 8/18/2010 9:34 AM, Joseph Fry wrote:
> On Wed, Aug 18, 2010 at 12:26 PM, Kevin Ross <kevin at familyross.net
> <mailto:kevin at familyross.net>> wrote:
>
> On 8/18/2010 9:17 AM, Raymond Wagner wrote:
>
> On 8/18/2010 12:06, Kevin Ross wrote:
>
> On 8/18/2010 9:03 AM, Raymond Wagner wrote:
>
> On 8/18/2010 11:53, Kevin Ross wrote:
>
> On 8/17/2010 7:43 PM, James Harris wrote:
>
> The Zotax NM10-B-E
>
> http://www.newegg.com/Product/Product.aspx?Item=N82E16813500048
>
> Is a DTX board [slightly wider, thats OK I can
> manage a case for it] and lists a x16 slot BUT
> with a x1 lane.
>
>
> I couldn't believe this when I read this. What on
> Earth could the reason be for having a PCIe x16
> slot but with only 1 lane? How could that be any
> better than just putting 2 x1 slots on the board?
> I can't imagine anything designed for an x16 slot
> would work very well in such a slot.
>
>
> They make PCIe x1 video cards, so obviously someone
> thinks they will work fine for some purposes.
>
>
> Right, but do those video cards fit in a PCIe x1 slot? Or
> do they require an x16 slot?
>
>
> They're exactly the same as the x16 card, they just have an x1
> connector to fit on boards with x1 slots. You're not going to
> be doing a whole lot of 3D gaming, but for an extra monitor or
> video display (using hardware decoding), they're great.
>
>
> Right, that was my point, they have an x1 connector, not an x16
> connector. Why have an x16 connector on a motherboard if 15 of
> the 16 lanes aren't hooked up? Just put another x1 connector on
> there. Imagine the confusion that would come when someone sees
> the x16 connector, then goes and buys a nice video card, puts it
> in and it doesn't work, because it isn't really an x16 slot.
>
> Ahh.. but it is an x16 slot.
> The spec allows a slot to use fewer lanes that it is capable of.
> Often in boards with multiple x1 slots, plugging devices into those
> slots actually 'steals' lanes from a nearby x4, x8, or x16 slot. On
> many SLI capable mobo's, connecting two x16 cards actually causes each
> one to only get 8 lanes.
> An x16 card will work fine in an x16 slot with only a single lane...
> it just won't have the bandwidth available to it that it would
> otherwise have. For accelerating HD playback or general 2D use, it's
> not an issue, x1 is more than enough to dump 1080p source to the
> card. Now if you wanted to use your GPU to augment your CPU for
> computationally intense work... then a wider bus would make a huge
> difference.
>
Thanks, I learned something today! :)
-- Kevin
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