Friday, January 3rd 2025
NVIDIA GeForce RTX 5090 Features 575 W TDP, RTX 5080 Carries 360 W TDP
According to two of the most accurate leakers, kopite7kimi and hongxing2020, NVIDIA's GeForce RTX 5090 and RTX 5080 will feature 575 W and 360 W TDP, respectively. Previously, rumors have pointed out that these GPU SKUs carry 600 W and 400 W TGPs, which translates into total graphics power, meaning that an entire GPU with its RAM and everything else draws a certain amount of power. However, TDP (thermal design power) is a more specific value attributed to the GPU die or the specific SKU in question. According to the latest leaks, 575 Watts are dedicated to the GB202-300-A1 GPU die in the GeForce RTX 5090, while 25 Watts are for GDDR7 memory and other components on the PCB.
For the RTX 5080, the GB203-400-A1 chip is supposedly drawing 360 Watts of power alone, while 40 Watts are set aside for GDDR7 memory and other components in the PC. The lower-end RTX 5080 uses more power than the RTX 5090 because its GDDR7 memory modules reportedly run at 30 Gbps, while the RTX 5090 uses GDDR7 memory modules with 28 Gbps speeds. Indeed, the RTX 5090 uses more modules or higher capacity modules, but the first-generation GDDR7 memory could require more power to reach the 30 Gbps threshold. Hence, more power is set aside for that. In future GDDR7 iterations, more speed could be easily achieved without much more power.
Sources:
hongxing2020 and kopite7kimi, via VideoCardz
For the RTX 5080, the GB203-400-A1 chip is supposedly drawing 360 Watts of power alone, while 40 Watts are set aside for GDDR7 memory and other components in the PC. The lower-end RTX 5080 uses more power than the RTX 5090 because its GDDR7 memory modules reportedly run at 30 Gbps, while the RTX 5090 uses GDDR7 memory modules with 28 Gbps speeds. Indeed, the RTX 5090 uses more modules or higher capacity modules, but the first-generation GDDR7 memory could require more power to reach the 30 Gbps threshold. Hence, more power is set aside for that. In future GDDR7 iterations, more speed could be easily achieved without much more power.
207 Comments on NVIDIA GeForce RTX 5090 Features 575 W TDP, RTX 5080 Carries 360 W TDP
Also set both at 4090's max power/performance limit, and see how much further the advancement has gone. And whether there are any efficiency gains at same power usage.
Anyhow, these 360 and 575 feel predictable. What remains unclear is if there are some IPC improvements. NV got no reason to improve it but they also had no rush to discount Ada by making better price/performance Super SKUs. Ada sold fine regardless.
So the numbers you're seeing are correct.
I agree with you on the VRAM argument. I feel like 12 GB is decent for my 6750 XT, at least I don't need to be afraid of running out of it before I run out of GPU grunt.
we don't know what PNY is cooking
And that pcb shot looks like it's been taken from PC Partner card(Zotac et al, see Zotac rtx4090 AMP review), so probably not from nvidia reference design.
Well I might get one just for winter months as I'm heating my PC room with 600W IR panel + 4070TIS atm. Maybe I could replace IR heater with 5090:rolleyes:
Your AC is a good example. Didn't you change it's settings? Did you run your AC out of the box?