If you're comparing launch MSRPs I suppose. 3080 Ti's are just sitting around in stock for less than the MSRP of the 4080 12GB though, with sales dropping them way lower (IE MSI Ventus 3080 Ti for US$740 at Best Buy).
Ada Whitepaper containing specs. Note they compare the 4080 16 GB to the 3080 Ti and the 4080 12 GB to the 3080 12 GB. Which... given the prices actually makes sense.
Seeing the specs like this really makes it look like memory bandwidth is an issue.
There is a good reason for that.
Generating 2000w from 240v is much easier then generating 1600w from 120v.
Not just a little easier, but massively easier. In math, the 120v unit would need to pull down 59.96% more amps down the line. But once we factor in voltage drop across your household wiring, that number is going to probably climb closer to 65% more amps down the line. That is 65% more heat to dump out of the unit, 65% more heat to dump out of your household* wiring, 65% more waste, 65% better components, etc.
*if you do go with the 120v option, you should pay a certified electrician to install an outlet just for your computer with a dedicated 20 amp circuit.
edited multiple times:
I did my percentage math wrong originally, it is as follows:
1600 watts / 120v = 13.33 amps
2000 watts / 240v = 8.33 amps
13.333 / 8.333 = 1.5996, or 59.96% more amps
That is why I suggested you get an electrician to run a 240v circuit for the EVGA one.Wait, so there is a difference between that Evga and Seasonic, not just in wattage (2K vs 1,6K), but in voltage as well (240v vs 120v)? If thats what you mean, i did not know that, i am clueless in these things.
That is going to blow right past the standard 15 amp circuit found in most houses.
Input Current 20 – 16A
You don't see very high wattage PSUs that run full power at 120V. They tend to be a little more efficient at 230V, but the primary reason is just practicality. Even an excellent supply like the EVGA 16000 T2 is only around 92% efficient at full load on 230V, probably close to 90% on 120/115V. That means at full load it's pulling 1778W on a 120V line. Even if your outlet actually maintains 120V at that draw, it's 14.8A and you're maxing out a typical branch circuit. If you had a 2000W unit running at max power most people would be tripping breakers at 120V even if their PC was the only thing on the circuit.Wait, so there is a difference between that Evga and Seasonic, not just in wattage (2K vs 1,6K), but in voltage as well (240v vs 120v)? If thats what you mean, i did not know that, i am clueless in these things.
That is why I suggested you get an electrician to run a 240v circuit for the EVGA one.
But in truth, you likely should get a electrician to run a circuit either way.
The 120v unit your looking states it consumes 120v 16 to 20 amps:
https://www.thermaltake.com/toughpower-gf3-1650w-gold-tt-premium-edition.html
That is going to blow right past the standard 15 amp circuit found in most houses.
It is going to be to much for a 20 amp circuit if it is shared between multiple outlets.
It is going to be to much for a standard wire 20 amp circuit if your greater then 25' wire feet from the breaker box.
Keep in mind you need to power your monitor and stuff also.
You'll be fine then. Pretty much every modern PSU will run from 115V-240V, just some really large ones at 240V only. If all your wiring is 240V you shouldn't have too much trouble.So if i go with that Evga 2K one or alternatively:
Corsair AX1600i
SuperFlower Leadex Platinum 8Pack Edition 2KW
would any of these be OK? Why calling electrician ro run a circuit? Are the circuits not standard 240v? I live in central Europe.
Do you guys think its possible to mount 2x watercooled 4090s into full tower case? Like the MSI one for example? I can see the upper card would have the radiator mounted up top, but where would you mount the rad for the bottom one? Anyway, would it be stupid to have 3 aios inside single case (420 for cpu and 2x 240 for gpus?)
i dont have experience with custom loop, how much it costs, is it expensive? Not taking waterblocks for cards into account, just pump, radiator, reservoir, tubing and all the jazz needed to make it work?
I am not sure there is a consumer PSU (eg: standard form factor) out that will handle two 4090's and a high end CPU. Sure, its 450W advertised for an FE version of the card, but you still have to account for transient spikes in excess of 600W.
What is your intended use case for them? You can't SLI them, its literally impossible.
If you are just doing AI/Math stuffs, then the transients may not matter, as those really show up the most in gaming.
um, so I assumed you were USA.I live in central Europe.
um, so I assumed you were USA.
I know very little about EU electric systems and circuits used in homes. I think your 230v already, but not really sure.
My apologies.
PRIME TX (seasonic.com)
When it says its 115 v - 240v, what decides which voltage will it use?
Yeah, I think my initial assessment of DLSS3 was correct. I see absolutely no reason to use it over DLSS2.x or native. Also, with the launch of Ada/DLSS3, Digital Foundry has confirmed beyond all doubt that they're, uhm, rather partial to Nvidia. Can't take them seriously at all.
PRIME TX (seasonic.com)
It has two of the cables:
View attachment 68684
PCIe Gen5 "12VHPWR" power connector to feature 150W, 300W, 450W and 600W settings - VideoCardz.com
It seems there are different quality of cables for the various wattages. I would hope that the two cables provided with the Seasonic PSU are both rated for 600W for a total of 1200W handling capacity by the PSU. Unfortunately, they are not clearly mentioning that. Maybe get in touch with their support for clarification?
The type of socket where you connect it to decides that. If it's a 220-240V socket, it will get minimum 220V up to 240V instead of 120V.
The connector plugging into the PSU is the manufacturer's choice. Only the GPU connector on the other end of the cable has to follow the standard. Besides, these PSU manufacturers don't expect people to plug modular cables from one brand into another brand's PSU. That's why doing that is a really bad idea.Cause i expected that new connector to be on the psu side as well, the one with smaller pins, like on the Thermaltake PSU.
That PSU is a good unit and will operate at your line voltage.https://seasonic.com/prime-px
the 1600W one, is not good, not because of not enough wattage, but because voltage thing? When it says its 115 v - 240v, what decides which voltage will it use? The type of my home circuits? How much is it loaded?
A lot of questions, bulleted answers:Regarding the cable, so do you plug one ending into 2 8pins on the psu and the other into the new connector on the GPU? Cause i expected that new connector to be on the psu side as well, the one with smaller pins, like on the Thermaltake PSU. If there is no need fo that connector and its all about cable, how come with that adapter there are 3x 8pins on psu side, or even 4 of them, and here you can get away with just 2 8pins?
It was more important to show 3060 owners how their new 4080 or 4090 will perform. /sinterestingly they left the 3090/Ti off probably not a good sign
Would be a crappy move by GPU makers esp after Nvidia found that problems may occur with sub-par quality cables/adapters.The cables you get from from Seasonic will be better than the combo of classic PCIe cables + adaptors from the GPUs. They will obviously look much better but will also be safer and easier to manage.
Sorry but I don't follow. Are you talking about the adapters? I think everyone will be just fine, except for the fact that the information vacuum left too much to be interpreted the wrong way.Would be a crappy move by GPU makers esp after Nvidia found that problems may occur with sub-par quality cables/adapters.
This does pretty much shows why 4080 12GB should be 4070 at best. 3090 probably performs like that too.1440p benches
Overwatch 2: GeForce RTX 40 Series GPUs with NVIDIA Reflex reach 360+ FPS, 1440p
New 600 FPS frame rate cap and system latency as low as 8 milliseconds thanks to the unbelievable performance of GeForce RTX graphics cards, and the magic of NVIDIA Reflex.www.nvidia.com
interestingly they left the 3090/Ti off the comparison
the numbers:
3070: 195 fps
3080: 249 fps
4080 12gb: 296 fps
4080 16gb: 368 fps
4090: 507 fps
4080 16 GB 1.88x faster than a 3070
4080 16 GB 1.48x faster than a 3080
4090 1.38x faster than 4080 16 GB
Still curious how these numbers may change at 4K/VR
Sorry, I may have misunderstood. You seemed to imply that the adapter cables included by GPU makers may be of a lesser quality (compared to the Seasonic ones) and therefore not as durable.Sorry but I don't follow. Are you talking about the adapters? I think everyone will be just fine, except for the fact that the information vacuum left too much to be interpreted the wrong way.
It's a transition period and adapters are the only viable solution from the PoV of the GPU maker, along with judicious use of the 12HPWR connector (for now, some GPUs may be better off using the old connectors). From the PoV of the PSU maker and even the consumer, offering a 12HPWR cable compatible with existing PSU models is a better solution. On some models that are still in production the PSU makers will start adding the cable themselves, for the ones already in use the customer may decide whether to buy the cable or not.
AFAIK the problems experienced with the 12HPWR connector were very specific, requiring prolonged heavy use (something like 55A for 10+ hours) and a strong bend of the wires close to the connectors, putting additional mechanical strain on top of the thermal stress. Were there other findings from Nvidia?
They are not even including the best cooling solution, which should be AIO only for $1600 GPUs.When ppl buy $1600 GPUs, they better include the best quality adapter cables.
In current games. They will brainwash developers to do some of their proprietary trickery so upcoming and future "The way it's meant to be played" AAA games make the 4080 12GB perform like it should.This does pretty much shows why 4080 12GB should be 4070 at best.