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They said during the presentation they had a 100W limit. The previous Nvidia hardware is ~50W and this new hardware is ~72W (36W per chip). So, 500W is going t

They said during the presentation they had a 100W limit. The previous Nvidia hardware is ~50W and this new hardware is ~72W (36W per chip). So, 500W is going to be well beyond that and wouldn't fit their requirements.

7e 7y ago
Practically speaking there is no power limit. The traction motors on Tesla's cars themselves will pull two orders of magnitude more power than these chips will.
FireBeyond 7y ago
Granted, there are other factors (obviously), but it seems odd to be quibbling about even 400W on a car with a 100KWh battery pack. 0.4% difference in consumption accounts for less than 2mi of range.
- perilunar 7y ago
  400W x 3 hrs = 1.2 kWh = 1.2% of a 100kWh battery. But that was only one of the issues. They also mentioned waste heat and being able to retrofit the computer to older cars as reasons to keep the power down.
  - 7e 7y ago
    If you're driving a Tesla for three hours, you have likely drained a huge chunk of the battery already, either via the traction motors alone, or in combination with climate control and waste from braking. Tesla air conditioning alone can draw 600-2000 watts. Inference power draw is really nothing.
sundvor 7y ago
I'm watching the video. Highly interesting. That level of power use would take *noticeable" dents into the range of the car, especially in inner city driving. Furthermore that's a lot of thermals to get rid of. 500w, crikey, speaking as someone who water cools his PCs, forget about retrofitting older cars! (That was one of the criteria!) The existing units sit behind the glove box in front of the firewall, and are rather compact. The thermal budget was a hard one. Nvidia are full of crap on this one.
- 7e 7y ago
  Practically speaking there is no power limit. The traction motors on Tesla's cars themselves will pull two orders of magnitude more power than these chips will. Thermals are nothing compared to the heat generated by the battery, especially when supercharging.
  - sundvor 7y ago
    All power usage adds up. More important, the unit sits behind the glove box in front of the firewall. You'd need to redesign the car to fit a cooler worthy of 500w in there, thus making retrofitting a much harder task. My 280mm Corsair AIO water cooler struggles with a 140W TDP Intel CPU at full load. All typical car manufacturers' message when rolling out something new: Buy the new car. Here, existing owners get access to a paradigm shifting feature, by just swapping out what will be an inexpensive module. Tesla has nailed this upgrade, in my eyes. I don't own any of their cars (although I wish I did), nor do I have any shares.

7e 7y ago

Practically speaking there is no power limit. The traction motors on Tesla's cars themselves will pull two orders of magnitude more power than these chips will.

FireBeyond 7y ago

Granted, there are other factors (obviously), but it seems odd to be quibbling about even 400W on a car with a 100KWh battery pack. 0.4% difference in consumption accounts for less than 2mi of range.

perilunar 7y ago
400W x 3 hrs = 1.2 kWh = 1.2% of a 100kWh battery. But that was only one of the issues. They also mentioned waste heat and being able to retrofit the computer to older cars as reasons to keep the power down.
- 7e 7y ago
  If you're driving a Tesla for three hours, you have likely drained a huge chunk of the battery already, either via the traction motors alone, or in combination with climate control and waste from braking. Tesla air conditioning alone can draw 600-2000 watts. Inference power draw is really nothing.

sundvor 7y ago

I'm watching the video. Highly interesting. That level of power use would take *noticeable" dents into the range of the car, especially in inner city driving. Furthermore that's a lot of thermals to get rid of. 500w, crikey, speaking as someone who water cools his PCs, forget about retrofitting older cars! (That was one of the criteria!) The existing units sit behind the glove box in front of the firewall, and are rather compact. The thermal budget was a hard one. Nvidia are full of crap on this one.

7e 7y ago
Practically speaking there is no power limit. The traction motors on Tesla's cars themselves will pull two orders of magnitude more power than these chips will. Thermals are nothing compared to the heat generated by the battery, especially when supercharging.
- sundvor 7y ago
  All power usage adds up. More important, the unit sits behind the glove box in front of the firewall. You'd need to redesign the car to fit a cooler worthy of 500w in there, thus making retrofitting a much harder task. My 280mm Corsair AIO water cooler struggles with a 140W TDP Intel CPU at full load. All typical car manufacturers' message when rolling out something new: Buy the new car. Here, existing owners get access to a paradigm shifting feature, by just swapping out what will be an inexpensive module. Tesla has nailed this upgrade, in my eyes. I don't own any of their cars (although I wish I did), nor do I have any shares.