Would not recommended that to crunch with a top GPU, and I would not go with a laptop based system anyway. It would cost less to build a desktop box than go with that thing.

---

FAQ's

HOW TO:
- Opt out of Beta Tests
- Ask for Help

I'm having a little trouble with the math but assuming I'm reading the specs correctly that Turbo Box will be a bottleneck. It looks like the Turbo Box runs from a 4x link that must be shared between video cards. The stated top speed is 20 Gb/s (note the lower case "b" indicating bits).

According to this:


http://en.wikipedia.org/wiki/List_of_device_bit_rates#Computer_buses

a PCIe 2.0 4x bus is good for 16 Gb/s which is the closest thing on the list. This is equivalent to PCIe 1.0 8x speed.

From my crunch boxes with multiple cards I can tell you that 4x vs 16x does make a difference, but not a huge difference. Cards in the 16x slot run perhaps 10% faster than they do in the 4x slot.

Now sharing a 4x slot would be even worse and a high end GPU would make it worse as well.

The laptop link is only 5 Gb/s so the situation is worse still on a laptop.

I am using a SYS4027GR-TR server from Supermicro. It has an eight gpu capacity. Running right now with six GPU'S. Four GTX 780 ti, one GTX Titan and one GTX Titan X. Server has two six core E5-2600 v2 cpu's. Has two 1000W PSU and two PSU for redundancy. All works fine. 64DB is the noise level at two feet from server. I will need to get some 90 degree pcie 8 pin and 6 pin adapters because the lid will not close because the power connectors on the gpu's are on top. Small problem, but can be fixed.[/img]

---