Printable View
I think it means any form of clock boosting, i.e. Turbo mode, will be disabled or locked at some much reduced clock speed. So nVidia is still hamstringing the Titan but doing it in a different way. Sorta making the Titan a teaser to the high-end Tesla/Quatro lines.
No, FP32 will still run at 4.5 TFLOPS (~3.9 TFLOPS @ 725 MHz). The SP and DP cores are separate (though both groups are within the same SMX, which is basically Nvidia's term for a cluster of cores. Each of the 14 SMXs consist of 192 FP32 cores and 64 FP64 cores) and both can run at the same time, which is why clocks are reduced because of the increased TDP and heat output.Quote:
Originally Posted by zombie67
It's very similar to the K20X, but the K20X supports ECC while the Titan doesn't. Also the Titan won't support direct memory access to other 3rd party PCIe devices often found in servers/supercomputers among other things not relevant to desktops or most workstations, like HyperQ which allows multi-core CPUs to simultaneously utilize the CUDA cores on a single K20X. Also there's no programming tech support.Quote:
AnandTech says: The key enabler for this is that Titan, unlike any consumer GeForce card before it, will feature full FP64 performance, allowing GK110’s FP64 potency to shine through.
What is full performance? Does that mean it will match the Tesla K20 or K20X at DP? So then, what is the point of Tesla, if this performance can just be turned on at will?
Quote:
Okay, but when you enable it, what is the result? 8/24 FP32?
Er, that's not what I was asking. Or at least what I thought I was asking. Let me try again. When you enable it, what happens? If not-enabled, DP is 1/24 of FP32. If enabled DP is 1/3, so that is 8/24 of FP32, right? Now I've confused myself.Quote:
No, FP32 will still run at 4.5 TFLOPS (~3.9 TFLOPS @ 725 MHz).
Okay, let's try this a different way. With the Titan DP enabled, how will it compare to the 7970 at a DP project like milkyway (assuming they had a similar app for both)?
Assuming the MW app is coded equally efficiently for both Nvidia and AMD and that both apps require the completion of the exact same amount of work, the Titan would be ~30% faster than the 7970.Quote:
Originally Posted by zombie67
Attachment 1268
Not bad at all. It's about time Nvidia allowed DP.
Edit: Larger image: http://hothardware.com/articleimages/Item1992/comp1.png
Maybe I will buy one after all...if the cost comes down.
Wish they had included the 580 in that chart.
The 580 would've been within 1% above the DP-disabled Titan. Unless you want the Titan for bragging rights (which i do, personally :D ) you're better off getting another 7990 for the price/performance/slots used.Quote:
Originally Posted by zombie67
Looks like for the moment the only way to get a Titan is to buy a complete pre-built system ---> http://www.forbes.com/sites/jasoneva...-where-to-buy/
Edit: Your gonna Love this.....
The Newegg overview video (Here) puts a true spin-doctor lie into the reason for the automatic downclocking when DP is enabled. Somewhere in the first 4~6 minutes of the video it is stated that downclocking helps to maintain compute accuracy in DP mode. (B.F.S.)
Received an E-mail this morning from EVGA regarding the new Titan. $999.00. Not available yet though.
http://www.evga.com/Products/Product...06G-P4-2790-KR
Hey F$ - that is some real funny stuff - I dare you to call them on it! :D :-bdQuote:
Originally Posted by Fire$torm