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(Dr.) Bottlenecks: Or, How I Learned To Stop Worrying And Just Buy the GPU - Page 10

post #91 of 135
Why is the CPU a constant in the graph, isnt that a massive flaw? I.e, When it is loading new areas etc you are getting CPU lag. if you have a faster machine with better ram, you arent. Thats not a tiny niche, that is gaming.

i.e when playing BF2 on high, you need 2GB of ram, else you get a little stutter every 5 or so seconds. Its the CPU and RAM backing the graphics up that keeps it consistant, especially with newer games that are more ram intensive. Its no good if you are getting loading lag and stuff in a fast paced fps. That is what bottlenecking is, not an overall FPS drain. And it does exist, it really does. If people are writing down numbers for FPS's in benchmarks it could still be reading high in fraps, but still be choppy, and potentially less playable.
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post #92 of 135
Thread Starter 
Quote:
Originally Posted by Double Helix View Post
Why is the CPU a constant in the graph, isnt that a massive flaw? I.e, When it is loading new areas etc you are getting CPU lag. if you have a faster machine with better ram, you arent. Thats not a tiny niche, that is gaming.

i.e when playing BF2 on high, you need 2GB of ram, else you get a little stutter every 5 or so seconds. Its the CPU and RAM backing the graphics up that keeps it consistant, especially with newer games that are more ram intensive. Its no good if you are getting loading lag and stuff in a fast paced fps. That is what bottlenecking is, not an overall FPS drain. And it does exist, it really does. If people are writing down numbers for FPS's in benchmarks it could still be reading high in fraps, but still be choppy, and potentially less playable.
False...

However you do have a point about loading of memory and 2 gigs. However that's FAR beyond the scope of this thread. We're talking solely CPU speed/load/FPS which is a, more or less constant thing. Though you're prompting me to run more tests addressing that fact.
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post #93 of 135
Well it is a point, its not so much as a bottleneck, but if the CPU cant run the game rightm then its no good. I.e if you take a corner, then you computer decides it wants to load the skin of the bad guy round that corner then itll lag, and you will die. that is what i would define as a bottle neck, because there is no point in having 1000 fps if it lags like that. the point at which the CPU isnt bottlenecking is the point at which that doesnt happen. Just my own opinion, the article is very well written though!
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post #94 of 135
You remind me of Dr. Phil...just adding on that Ph.D without any actual doctorate work.

Just joking around, don't get angry hehe

Nice thread btw, I think it is helping to clear up a lot of myth and hype surrounding the dreaded "bottleneck".
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post #95 of 135
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post #96 of 135
Awesome info. Great research and good article. Sending to some of my friends.
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post #97 of 135
Thread Starter 
Bump because I see the bottleneck babble creeping back into the forum again.
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post #98 of 135
Free bump, but kind of a question...

If a monitor's refresh rate (60hz) is the bottleneck, why do we see more then 60fps when using fraps? Shouldn't it be capped at 60?

Wow, I kind of thought about this more while posting. Is that what the computer is producing lots of fps but the monitor can't show all of it and fraps is not an accurate measure on what we actually see? If you set up an external fps monitor, I'm guessing you would only see 60fps (unless you drop below that).
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post #99 of 135
Thread Starter 
FRAPS counts the output from your GFX not the frames displayed by the monitor. (Unless you enable vsync which limits your GFX to what your monitor can put out)

With vsync OFF you see 60 frames per second COMPRISED of horizontal slices of however many frames your GFX output. For example. If your GFX outputs a constant 120FPS but your monitor only supports 60Hz you'll only see 60 frames flashed at you, but half of each frame comes from each of the 120.

If 240FPS then it's ~1/4 of each of the 60FPS coming from each frame.
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post #100 of 135
So when i play WoW and my FPS sit around 40 outside then jump to about 60 indoors.. My monitor is slowin my computer up? Would it be my older processor? Would 2 GB total of RAM help in anyway.. Because soon enough i'll be upgradin to 2GB
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