[ale] PCIe v2 vs v3

[lnxgnome]

Last time I read over them, the PCIe standards dictate that it must work 
both ways, following the limits of the LCD.

I've used numerous LSI PCIe-v3 SAS cards in v2 and v1 slots (system that 
don't support v3 at all).


On 11/17/16 4:53 PM, Jim Kinney wrote:
> I do believe you are correct. V2 card can work in a v3 slot and NOT 
> the other way around.
>
> On Thu, 2016-11-17 at 14:55 -0500, Phil Turmel wrote:
>> On 11/17/2016 08:56 AM, Jim Kinney wrote:
>>> If I use a v3 gpu in a v2 slot, all connections are backward 
>>> compatible just 1/2 clock speed, will that do anything more than run 
>>> the gpu at half speed and half memory bandwidth. It seems my older 
>>> tesla cards can't run the required tensorflow code. 
>>
>>
>> Hmmm. Are you sure the backward compatibility is in that direction?  I
>> was under the impression one could put a v2 card on a v3 mobo, but not
>> necessarily the reverse.
>>
>> Phil
>>
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> -- 
> James P. Kinney III
>
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