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NVIDIA 4000 Series



"The PCB has a single 12+4-pin 12VHPWR additional PCIe Gen5 power connector that can deliver up to 600W of power to the device, yet default BIOS settings do not allow Nvidia's GeForce RTX 4090 FE to draw more than 450W."

I don't see a dual BIOS switch in any of the 4090 pics. I'm not sure what overclocking method gets the FE to 600w. -Maybe a clandestine BIOS flash?
 
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This is hilarious, they are talking about the RTX 4080 naming and pricing thing.

On the one side you have Steve clearly not happy about it and telling it what for what it is and of the other side you have Tim slowly turning bright red trying to find ways to justify Nvidia utter BS.

 
It does not depend on the psu. If the card is correctly designed, it will not be pulling much more from a single port - even with an adapter.
Also, they couldnt just make card that only works with 16pin correctly - the only native psu ready for launch is garbage Thermaltake.
There were tests done with the 3090/ti measuring the power draw from each of the PSU-side ports for the 3-1 cable... they consistently showed significantly more power being drawn from only 1 of the 3 ports, way beyond the approved limits.

ATX3.0 removes this issue.
 
This is hilarious, they are talking about the RTX 4080 naming and pricing thing.

On the one side you have Steve clearly not happy about it and telling it what for what it is and of the other side you have Tim slowly turning bright red trying to find ways to justify Nvidia utter BS.


I find it annoying how they keep calling it a 4070, when in reality the 4080 12gb has a die size that's normally found on a 60 series GPU, it's a 4060 variant
 
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theres not much to read into the naming scheme... both nvidia, amd sold the same die in different tiers last gen - 3080 -> 3090 and 6800 -> 6800xt -> 6900xt
i looked at past specs as well, xx104 dies from maxwell, pascal, turing were sold as xx80 series
and theres been no regression in transistor count either for the ad104, 36b transistors a solid 8b bump to the last gen flagship, leather jacket decided to budget more transistors for non-raster performance but thats his strategy, and you got to be buying into his strategy if you are buying a nvidia product
i believe that the xx90 is actually a new tier rather than a regression of the xx80 - only way to validate this would be amd's response to nvidia's segmentation
 
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On PSUs, speaking as a PC builder, I wouldn't even bother trying a 750w PSU with a 4090. It's not enough. And we're talking about adding a 600w card to that, leaving you 150w for every other part of your system: mobo; mem; CPU, RGB, fans, AIO or air cooler. It doesn't computer (see what I did there?).

You may get away with an 850w, provided you're not running a high-end CPU, and provided you are going to limit your card to the 450w BIOS. But then, it would be kinda crazy to run such an absurdly powerful GPU with a low-end CPU. My 12900k can easily peak over 300w draw on its own.

1000w should be considered the minimum for a 4090 IMO.

The rumour that the 4090s will blow up your non gen3 PSU have been debunked, it's simply not true. PSUs have protection circuits so the worst that would happen if more power is pulled than it can deliver would be the classic 'loud BBBZZ' noise through your speakers and complete system shutoff. I've overloaded systems before, it's not the end of the world. The system just flicks off and you're left with 'Oh bum, I need a bigger PSU'.

Hope that helps.
 
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theres not much to read into the naming scheme... both nvidia, amd sold the same die in different tiers last gen - 3080 -> 3090 and 6800 -> 6800xt -> 6900xt
i looked at past specs as well, xx104 dies from maxwell, pascal, turing were sold as xx80 series
and theres been no regression in transistor count either for the ad104, 36b transistors a solid 8b bump to the last gen flagship, leather jacket decided to budget more transistors for non-raster performance but thats his strategy, and you got to be buying into his strategy if you are buying a nvidia product
i believe that the xx90 is actually a new tier rather than a regression of the xx80 - only way to validate this would be amd's response to nvidia's segmentation

This, the 40 series naming is much the same as all the previous series bar the 30. The actual transistor count is much more important than die area shows a significant generational increase and indeed in terms of relative differences is a large generation bump.

GPU naming is irrelevant, it changes every few generations. As a consumer you should just look at price, features and performance.
 

"The PCB has a single 12+4-pin 12VHPWR additional PCIe Gen5 power connector that can deliver up to 600W of power to the device, yet default BIOS settings do not allow Nvidia's GeForce RTX 4090 FE to draw more than 450W."

I don't see a dual BIOS switch in any of the 4090 pics. I'm not sure what overclocking method gets the FE to 600w. -Maybe a clandestine BIOS flash?
You can switch powerlimit in afterburner
 
On PSUs, speaking as a PC builder, I wouldn't even bother trying a 750w PSU with a 4090. It's not enough. Worth remembering that you don't actually get 750w on most 750w power supply since they are usually 90% efficient or less. So you get 675 usable ws in reality. And we're talking about adding a 600w card to that, leaving you 75w for every other part of your system: mobo; mem; CPU, RGB, fans, AIO or air cooler. It doesn't computer (see what I did there?).

You may get away with an 850w, provided you're not running a high-end CPU, and provided you are going to limit your card to the 450w BIOS. But then, it would be kinda crazy to run such an absurdly powerful GPU with a low-end CPU. My 12900k can easily peak over 300w draw on its own.

1000w should be considered the minimum for a 4090, with which you'll get 900w of usable output.
You dont know how efficency works. It means power draw OVER power supplied. So 750W psu will supply 750W but draw 750/0.9= 833W from the power line. Most psus can also sustain more than they are rated for.
 
As a consumer you should just look at price, features and performance.
Sure, but for those who find the price to performance ratio wanting and to rant?

Then tiers, die size and so on are a good places to start and give an indication of whether the names have changed compared to previous generations.
 
RTX4090 has shown up in Geekbench cuda benchmark. Scored 75% higher than RTX3090. For reference, the 3090 scores 45% higher than RTX2080ti in this test.

The 3090 is 40-50% faster than the 2080ti gaming, so perhaps the 75% is an indication of where average rasterisation performance will land
 
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On PSUs, speaking as a PC builder, I wouldn't even bother trying a 750w PSU with a 4090. It's not enough. Worth remembering that you don't actually get 750w on most 750w power supply since they are usually 90% efficient or less. So you get 675 usable ws in reality. And we're talking about adding a 600w card to that, leaving you 75w for every other part of your system: mobo; mem; CPU, RGB, fans, AIO or air cooler. It doesn't computer (see what I did there?).

You may get away with an 850w, provided you're not running a high-end CPU, and provided you are going to limit your card to the 450w BIOS. But then, it would be kinda crazy to run such an absurdly powerful GPU with a low-end CPU. My 12900k can easily peak over 300w draw on its own.

1000w should be considered the minimum for a 4090, with which you'll get 900w of usable output.

The rumour that the 4090s will blow up your non gen3 PSU have been debunked, it's simply not true. PSUs have protection circuits so the worst that would happen if more power is pulled than it can deliver would be the classic 'loud BBBZZ' noise through your speakers and complete system shutoff. I've overloaded systems before, it's not the end of the world. The system just flicks off and you're left with 'Oh bum, I need a bigger PSU'.

Hope that helps.

I hopefully your pc building knowledge is better than your PSU knowledge! :p The efficiency rating doesn't mean you only get that percentage of the PSU's rated power output. It's actually how many watts are drawn from the wall socket compared to what is actually being supplied to your PC. A more efficient PSU will have a smaller delta between wattage drawn from the wall and being supplied to your PC so it's cheaper to run and should run cooler.

Though I do agree I wouldn't use a 750w psu with a gpu that can pull 450w or more.

Edit: Doh! I go make a drink mid post and you make an edit! :p
 
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