Nvidia announce 5 new notebook GPUs

[SchneiderMan]

oh that will be sweet if apple puts one of those in the new mbp, then i wont have any regrets for waiting so long

 

[Firefly2002]

Probably an estimate or an average based on testing.

Right, but my point was, an average of what? It's sort of a silly claim unless they're very specific in what they mean.

Cache uses less power than cores, at least according to the attachment (Pentium M Banias chip). And I think cache has less defects than cores despite the high transistor count, and even if there were, bits of it can be disabled and not have a big performance loss unlike cores (at least until core count gets in the double digits).

True. Dothan doubled Banias in cache.... although it also increased the FSB to 533 MHz from 400... with an overall 10% increase in efficiency per cycle. But beyond 2-3 MB of cache to a single core, results are very unspectacular. At least they'd lower the heat by some, and definitely the cost.

And, at least for server chips, cache is actually needed. When Intel was designing the Xeon MP Dunnington processor, they evaluated a 4-core chip with tons of cache and an 8-core chip with minimal cache. Intel settled on a 6-core chip with a moderate amount of cache because it had the best balance between core count and cache size.

This is very true. But mobile processors aren't server chips, so it's not quite so relevant.

 

[Yixian]

Hey I just had a though, seeing as all 5 of these cards have a built in GeForce 9100 G, do you think maybe the TDP includes both the discrete card and those integrated graphics?

Because if they do, you can knock off what, 10 watts or more if Apple don't have them both running together?

I'm probably wrong but it's a though. Nvidia only provide one TDP value, so it's not like there is one for the GPU and one for the IGU so we'd know they were quoted separately.

 

[iMacmatician]

Hey I just had a though, seeing as all 5 of these cards have a built in GeForce 9100 G, do you think maybe the TDP includes both the discrete card and those integrated graphics?

Because if they do, you can knock off what, 10 watts or more if Apple don't have them both running together?

I'm probably wrong but it's a though. Nvidia only provide one TDP value, so it's not like there is one for the GPU and one for the IGU so we'd know they were quoted separately.

Probably not... and even with 10 W knocked off all of them would still be too hot.