Hey bitL, thanks a lot for pointing this out. I think you hit the nail on the head in terms of the biggest weakness of our post: choosing the price. We've decided to make the spreadsheet that generated our graphs and (performance / $) tables public. You can view it here:

https://docs.google.com/spreadsheets/d/1La55B-AVHSv9LiQcs6GM...

You can copy that spreadsheet and insert whatever system price (in kilodollars) you want into B15:F15. Hope this makes everybody's decision making easier.

As a system builder and AI research company, we're trying to make benchmarks that are scientific, reproducible, correlate with real world training scenarios, and have accurate prices.

Are 2 1080TI better than a single 2080Ti?

Yes. 1080 Ti do not scale linearly, but in most of the benchmarks I’ve seen, two 1080 Ti are at least 1.75x faster than one when doing multi-GPU training.

1.75 / 1.36 (speed up of 2080 Ti over a single 1080 Ti) = 1.28. So expect 2x 1080 Ti to be about 30% faster.

You can see how multi-GPU training works with Titan V benchmarks in the link below. 1080 Ti have similar scaling profile.

https://deeptalk.lambdalabs.com/t/benchmarking-the-titan-v-v...

Thanks.. This is really helpful.

Sure thing :)

Not in theory, in practice, these are actual benchmarks. Your central argument is that prices within the first few weeks of a new product launch are higher than MSRP. That point will likely not hold true 30 days from now. It makes perfect sense to compare the products based on their MSRPs.

He's not talking about the benchmarks, he's talking about the prices - which as you pointed out are theoretical.

It's been a long time since GPU prices have been anywhere near MSRP, it seems dishonest to assume that they will be in the near future.

The 1080Ti is back at MSRP and the cryptocurrency demand has vanished, so what's left is the demand displaced by the high prices earlier.

In the past, it has been common that new hardware with low initial supply fetched premiums that lasted until supply met demand. It's not dishonest to assume that it's the same case here.

Exactly. We're sort of between a rock and a hard place in terms of choosing a price.

While we could decide to write some software that could pull today's market prices and update tables and graphs dynamically, we just decided to settle on a single number. If you are settling on a single number, the choice is either market price on date of publication or MSRP. Given that other GPUs tend towards their MSRP as time goes on, we decided to choose MSRP.

Your article still states that 2080ti is 25% more expensive, but lists 1080ti at $700 and 2080ti at $1,200 (which are correct prices from nvidia website) which is 70% more. Which one is right?

It states that the "typical GPU system" (estimated at ~1300$ without GPU) will be 25% more expensive.

By the way, the MSRP for a regular 2080Ti is 999$, the 1200$ is the Founder's Edition price.

MSRP may be $999, but you won’t find them for much below $1,200 for the time being.

GPU modules are manufactured in China. Their harmonized codes are covered in recently established tariffs. 10% tariffs are already hitting cards arriving at US ports. This tariff will increase to 25% on Jan 1.

Prices will stay well above MSRP.

You mean it MAY not hold true 30 days from now. Last year around this time the cryptocurrencies started spiking. Perhaps demand for graphics cards will go up again, and this time, maybe the demand for the 1080 Tis won't match the demand for the newer, shinier 2080 Tis.

Fair feedback, I've edited parent.

1080 Tis are back under MSRP right now and have been for some time. We decided to assume that 2080 Tis would exhibit similar behavior.

Unless crypto mining picks up again.