Shocking Video With nVidia Engineer

[mockingbird]

As some of you may or may not have heard, ther's a bit of a scandal with the Geforce 970, where the card really only has 3.5GB RAM, eventhough it's advertised as 4GB.

There's a nasty bug where if something tries to access the last non-existent 512mb, the card slows down to a crawl, or so I've read.

An nVidia engineer talk about this:

https://www.youtube.com/watch?v=spZJrsssPA0

[diif]

Re: Shocking Video With nVidia Engineer

No !! That guy is a comedian not an Nvidia engineer and secondly the cards have 4Gb not 3.5Gb.
You are correct that there is an issue when addressing over the 3.5Gb.

http://www.extremetech.com/extreme/1...-memory-issues

[japlytic]

Re: Shocking Video With nVidia Engineer

Could it be the 32-bit addressing limitation, like on non-64 bit PCs?

[ben7]

Re: Shocking Video With nVidia Engineer

Could it be the 32-bit addressing limitation, like on non-64 bit PCs?

That's what I'm leaning to, or at least possibly something close to that.
There may actually be 4GB of memory on the board, but either some of it is not accessible, or some of it is set aside for something else.

[lloydo]

Re: Shocking Video With nVidia Engineer

hello l am brand new to electronic repair,recently retired, and now pursuing as a hobby. some language of compnents parts and usage may be unfamiliar to me so bear with me if ask . my background was mostly industrial real time electrical with some electronics.

[diif]

Re: Shocking Video With nVidia Engineer

It's because they are using a slightly gimped gpu. This means they can't optimally control the last 512mb.

A fuller more technical explanation here.
http://wccftech.com/nvidia-geforce-g...lly-explained/

[RJARRRPCGP]

Re: Shocking Video With nVidia Engineer

Reminds me of the 32-bit Windows limitation, because commonly, roughly 512 MB is reserved for devices.