Comments on: [review]3-way SLI, a new gaming experience

By: LaGUNaMAN

LaGUNaMAN — Sat, 29 Dec 2007 06:20:39 +0000

You’re welcome jeff, rock on!

By: jeff

jeff — Sat, 29 Dec 2007 06:09:34 +0000

Thank you LaGUNaMAN, i already fix the bugs..

By: LaGUNaMAN

LaGUNaMAN — Fri, 28 Dec 2007 17:06:50 +0000

Nice review. A few edits needed though.

1. Title :

“[review]3-way SLI, a new gaming expreience”

Should be – “experience”

2. Page 3 :

“Important: switch between 2-way SLI and 3-way SLI is sample,”

Should be – “Important: To switch from 3-way SLI to 2-way SLI is simple,”

By: philip

philip — Fri, 28 Dec 2007 04:42:45 +0000

yes 16+8+16 PCIe

By: Croaker

Croaker — Fri, 28 Dec 2007 03:06:24 +0000

Maybe I missed something, but I thought that 680i tri-sli is not as effective due to the middle slot being 8x not 16x and thus bringing the other 2 slots down as well.

By: jeff

jeff — Fri, 28 Dec 2007 03:00:52 +0000

@Doug Friedman,
ya, 3 hops is not good, but you forgot the PCIe-2.0. ATI’s Quad CFX is based on PCIe-2.0. while 3-way SLI isn’t.the CFX connector itself is not as important as SLI connector.
but i really concern about the Catalyst..you know that is not a good driver

By: philip

philip — Fri, 28 Dec 2007 02:17:57 +0000

FEAR is DX9 game

By: aledb12

aledb12 — Thu, 27 Dec 2007 21:45:10 +0000

FEAR is DX10?

By: Doug Friedman

Doug Friedman — Thu, 27 Dec 2007 13:59:00 +0000

“Don’t forget the Quad CrossfireX coming this January. Will AMD do better this time?”

Hehe, from a technical perspective, the reason why Nvidia chose to do a 3way SLI(not 4way or more) is that they wanted to have direct SLI connection between every video card. Using 2 SLI connectors, Nvidia’s solution utilizes the low latency of one hop connection. Compared to ATI’s quad crossfire, the data has to jump 3 hops from the top ATI video card all the way to the bottom card, which makes the latency 3 times as high, which will cause image synchronization issues, degrading performance.

Plus, Vista without SP1 currently only support 3 frames of forward rendering in AFR mode, thus putting the limit of SLI to 3 way. Now, SP1 will allow more GPUs, but ATI’s solution is limited to the release schedule of Vista SP1. We will see, it is getting interesting.