Quote:
Originally Posted by
cre8ive65Â

Hi, Here is my current CPU/GPU combo of my rig:
Warning: Spoiler! (Click to show)CPU: AMD FX 8150 @ 4.5 GHz
GPU: ASUS Radeon 7970 @ 1.25GHz
Mobo: Asus Sabertooth 990FX
I have enough money to do ONE of the following:
1. Add a second 7970 for crossfire (I have a good enough PSU)
2. Replace the 8150/990FX with a 3570k and a Z77 motherboard I will choose (keeping my ONE 7970)
I know for a FACT that adding another 7970 to my bulldozer WILL see a performance increase (No Bottlenecks), I've seen people who have added another 7970 to their bulldozer and seen a SIGNIFICANT frame jump. Which leads me to my question:
Warning: Spoiler! (Click to show)Which of the following upgrade choices THAT I HAVE LISTED will see the most performance gain (Will a bulldozer with 2 7970's beat a 3570k with only one 7970?).
I know the bulldozer isn't the greatest, I made a mistake, that is no reason to hate. but if adding a second 7970 is truly the better option, just say it. I'm looking for an honest answer.
See, you are missing the point a little here on what a "true bottleneck" is. It is very
VERY game dependent. In games like SCII, CIV 5 and Skyrim you would even be CPU bottlenecked by your current setup. They are very CPU intensive (well in Skyrim's case it is poorly optimized).
Would you get higher frames from Intel? yes
Will it make a significant difference? Normally no
You will however see a major difference with multiple cards. Yes in either setup, you will see a jump in FPS. But even with a FX chip overclocked to 4.5GHz, you will notice that Intel will give you much higher frames due to having a better architecture.
You will see the biggest difference when you are at higher resolutions. To achieve 60FPS+ with 3x1080p Eyefinity you will probably have to go intel.
There is a common misconception that most people do not understand is the following:
For benchmarking CPUs for gaming, you normally lower the resolution. Giving them the assumption that at lower resolutions the CPU works harder. That is NOT the case. it takes a lot more out of your CPU to run 60FPS at 1600p than it would to be to run 60FPS at 1080p. The reasoning for lowering the resolution is to negate ANY GPU bottleneck. your GPU will work exponentially harder at higher resolutions. But the point is this. If you cannot achieve 60FPS with your current CPU, meaning, you are CPU bottlenecked at your current resolution. You will not get over 60FPS at a higher resolution.
But the issue for multi-gpu setups is that bulldozer's architecture just cannot keep up. It does not handle multiple GPUs well....
http://www.overclock.net/t/1187898/fx-8150-in-multi-gpu-config-a-test-against-6-core-sb-e-how-does-our-bulldozer-fare-benchs-included-have-fun
You will get a jump in FPS, no argument there, but you will get a larger jump if you were to be on a SB or IB Intel system. It can be anywhere from 20%-100% increase from just switching over to Intel when you already have
multiple GPUs.
The only problem right now, is that you can do one
OR the other. What games are you playing?
Edited by Ironman517 - 6/15/12 at 1:19pm