- Jun 14, 2013
- 4
- 0
- 10,510
So I'm looking at doing a new build pretty quick. I'd like to point out that I am a programmer and *WILL* find usage for any extra power I put in my system but I don't want to pay an insane amount for diminishing returns. I know pretty well what I'm going to buy and what I am going to keep from my current build but I'm a little curious on my the limits of PCI express 2.0 and how it relates to SLI.
I was initially going to skimp on the mobo and just get what would support a 780 GTX, an 125w AM3+ CPU and a decent amount of DDR3 1600 ram (decent being like 8 Gb sense only sense only like 4Gb is even really used due to current 32-bit software), and that was really all I cared about. But being the power user that I am, and that I am interested in using CUDA for programing, I can and will use extra GPU power if I have it. With that in mind I looked for a mobo that did all this and allowed more GPUs in SLI. I found this sabertooth board which supports quad SLI. It was 3 PCIe 2.0x16 slots and 1 x4 slot. They can be configured, if I understand correctly, to x16, x8, x8, and x4.
My question: Will the bandwidth of the PCI slots limit the extra power of the extra GPUs? If so by how much(if numbers are possible it would be greatly appreciated)? Will 3 GPUs not be limited by this?
I was initially going to skimp on the mobo and just get what would support a 780 GTX, an 125w AM3+ CPU and a decent amount of DDR3 1600 ram (decent being like 8 Gb sense only sense only like 4Gb is even really used due to current 32-bit software), and that was really all I cared about. But being the power user that I am, and that I am interested in using CUDA for programing, I can and will use extra GPU power if I have it. With that in mind I looked for a mobo that did all this and allowed more GPUs in SLI. I found this sabertooth board which supports quad SLI. It was 3 PCIe 2.0x16 slots and 1 x4 slot. They can be configured, if I understand correctly, to x16, x8, x8, and x4.
My question: Will the bandwidth of the PCI slots limit the extra power of the extra GPUs? If so by how much(if numbers are possible it would be greatly appreciated)? Will 3 GPUs not be limited by this?
Facebook
Twitter
Instagram