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Why do reviewers seem to have difficulty identifying bottlenecks in CPU vs. GPU?

post #1 of 6
Thread Starter 
It's quite a baffling thing for me. I notice how many reviewers, even The Tech Report, seem to rely solely on FPS/frametime metrics to make comments about bottlenecking as well as performance. Some even get confused as to whether a fairly uniform set of scores across several test CPUs is GPUs indicate that the bottleneck is happening on the other card.

To me, the solution has always been common sense: monitor the CPU and GPU usage whenever doing an in-game run. If the CPU is at 100%, then the metrics being measured only apply to CPU performance. If GPU is at 100%, then the component under testing is the GPU. My personal benchmarking tests include an OSD with all this info (among other relevant factors like GPU Mem usage, temps & of course FPS + frametime).

Perhaps they do in fact do this as part of their test methodology. They simply don't put the CPU/GPU usage results in their articles, instead relating its results (that either the former or the latter is the bottleneck in the particular game) through comments. I haven't seen this as being explicitly included in their write-up for how they test, though.

What does everyone else think about how bottlenecks are treated in reviews?
     
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post #2 of 6
In the last 20 years the average IQ of people in developed countries dropped from 120 to about 100. You figure it out. rolleyes.gif
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post #3 of 6
Quote:
Originally Posted by ronnin426850 View Post

In the last 20 years the average IQ of people in developed countries dropped from 120 to about 100. You figure it out. rolleyes.gif

If we're all dumber how are we supposed to figure it out?! doh.gif
    
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post #4 of 6
Quote:
Originally Posted by Sumner Rol View Post

If we're all dumber how are we supposed to figure it out?! doh.gif

I mean "with this data in mind, You figure out "Why do reviewers seem to have difficulty identifying bottlenecks in CPU vs. GPU"", doh doh.gif

Also lower average doesn't mean we're *ALL* dumber now. Just some of you. tongue.gif
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post #5 of 6
However, your statement about 100% utilization on games for the CPU is highly unlikely. I've played Planetside 2, and the cpu is only about 70% utilized, however, when u press alt-f in game, the game will say that it is the CPU that is bottlenecking. This is due to optimization in games, if some games are very well optimized, then they will receive all 100% cpu usage, however, that tends to not be the case, especially when it comes to games in directx 9 or 10. Even in battlefield 3, I don't receive 100% usage in multiplayer, it usually ranges from 85-90%, never a full on 100. It may seem easy on the outside, but there's actually a lot more on the inside.
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post #6 of 6
Thread Starter 
Quote:
Originally Posted by ronnin426850 View Post

In the last 20 years the average IQ of people in developed countries dropped from 120 to about 100. You figure it out. rolleyes.gif

Well, I'm from the Philippines. Am I doing it right? tongue.gif
     
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