Originally posted by: johnnqq
zoz do you know what you're talking about? the 7800gtx is slow for many games at 1600x1200 with full blown aa/ af hdr blah blah.
and for MOST of us, a 6600gt will do. a 7800gtx is just a lot nicer...
I mean when 7800 GTX in SLI are on a system, the processor holds them and provide a bottleneck. If ATI produced faster single card then its woth it, but current sli solution requires faster cpu.
What I wanted to say is that even with the fastest gaming processor on the market today, the Video cards in sli will not give their full output.
Please read this:
"however, running two of these cards (2x7800 gtx) in SLI moves the performance bottleneck from the GPU to the CPU. When we throttled our test platform?s CPU back from 2.6GHZ to 1.8GHz, Doom 3 performance on a single 7800 GTX decreased only one frame per second. When we performed this same test in SLI, frame rates dropped from 86.3fps to 71.4fps, indicating that the dual GPUs were left tapping their feet as they waited for the CPU to catch up"
http://www.maximumpc.com/2005/08/xfx_geforce_780.html
Also:
Based on our testing, the sweet spot kicks in somewhere around the A64 3500+ range. Our numbers with Half-Life 2 show this most dramatically. In addition, the HL2 1024x768 results also show that the 7800 GTX benefits from the 1MB L2 cache of the 4000+ and FX processors. The scaling results on page three corroborate these findings as well, as the 7800 GTX?s performance jumps profoundly at 2.2GHz. This is probably the clock speed you should shoot for if you?re in the market for a new processor but don?t want to drain your bank account in the process; or if you can?t afford a new chip, it?s definitely the speed you should go for when overclocking.
If you?re lucky enough to afford a GeForce 7800 GTX SLI setup, you should definitely set your goals higher. In our GeForce 7800 GTX Performance Preview article, we were CPU-bound in many cases with the 7800 GTX SLI configuration even when running with an FX-55 CPU, which was the fastest processor we had at the time. We wouldn?t be surprised if 3.0GHz or more was required to truly keep a 7800 GTX SLI config running optimally.
So, if even MUCH faster video cards are released, the CPU will remain as bottleneck including the FX series which is the fastest on the market