Building Machine and PCIe Speeds

[ChrisVis]

Hi 3dreamstudios,

If you have the time, wait for the GTX 980 Ti.
It should be out in the next 3 weeks, has (rumored) 6GB VRam and will be faster than Titan X for around (rumored) 600-700 bucks.

Beside that, it is always better to watercool the cards, because you will not see any performance dropdowns.
There are two other active threads at the moment here, which cover all kind of watercooling stuff.

[glimpse]

indeed..if You go crazy it's time to think about NVMe based SSD hooked via M.2 (to save savo PCIe sockets..) an all the other components..

speed difference in theory sounds coold, but I curious how that works in practice..I mean..how Octane loads all the data..

The Question I had for a while & it's still spinning..what if we have same CPU..but let's comparing it with motherboard without PLX to having one or even pair of those.

In my understanding..if data is loaded in parallel then You will not gain too much benefit of having 16x instead of 8X lanes per GPU if You CPU will have just 20 anyway..but if You do loading to first, then 2nd, then third card..-lane cound makes a bit of a difference..

..but now on some topics I have more questions than answers..- would be nice to have some answer from devs to understand this a bit better..

in the very end..I guess if You have funds to build rock solit system, it's not that bad to take X99 board with at least a single PLX & have tons of flexibility..-like pluging those new NVMe drives (if You don't have enough lanes..even by adding M.2 You end up disabling one of PCIe slots..what is not the best deal if You trying to max out Your rig with 4-5 physical cards, some having maybe pair of GPUs inside..)

P.S. I don't think 980Ti (based on the same GM204 chip could be faster than GM200 based TitanX), unless it will be based on GM200 with 1/2 vram of current flagship- X..this might be an interesting card guess we have to wait & see..while companies start prepping some new cards for summer period =)

[ChrisVis]

Hi glimpse,

yeah this is very deep computing theory, hope somebody will join to clarify, how octane handles the data.

For the GTX 980 TI: It will be based on a full GM200 Chip, thats certain rumor .
NVIDIA did the same with the first Titan and the GTX 780 Ti... same chip, higher base clock, half of the VRAM.

Cya,
ChrisVis

[glimpse]

Hi glimpse,

yeah this is very deep computing theory, hope somebody will join to clarify, how octane handles the data.

For the GTX 980 TI: It will be based on a full GM200 Chip, thats certain rumor .
NVIDIA did the same with the first Titan and the GTX 780 Ti... same chip, higher base clock, half of the VRAM.

Cya,
ChrisVis

those rumors are jsut to keep the trafic for adds.. =) nVidia mix their tactics with each release..480, 580, 680, 780 - they do not follow regular Hi-end chip route..especially considering new (Titan) line between GTX & Pros - personally I doubt there will be faster card than TitanX based on single chip anytime soon..but it's just a guess & as mentioned..those rumors are jsut to keep the traffic, so I wouldn't hold a breath for that..

[3dreamstudios]

You all are making my head swim! lol. Appreciate all the info. I am a tech nut just have not been able to keep up with the most current stuff in recent years so much. Have built machines since I was a kid.

timing is not critical...so may wait on rumors of 6GB 980 TI. That sounds very nice! Looking at potential Riser cables/cards to stuff as many as possible onto one MOBO, so I'm not limited to the space limiting dual slot cards on single slot mobo.

Anyway, fun thread, will keep searching around. Thanks again!

[hdace]

This thread is very valuable, especially the motherboard list. Thanks so much!!