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Bottlenecks Explained (Revised 10/26/2012) - Page 2

post #11 of 23
I think if I had to tolerate any bottleneck it would be the CPU on a high-end graphics card if the framerates are high enough. Then if need be an overclock can be done biggrin.gif
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post #12 of 23
Thanks a lot for this. I agree with all of it. Some people here seem to miss that the CPU and GPU aren't the only components. There will always be a bottleneck. Even if both CPU and GPU are perfectly matched, they won't max out the RAM. An HDD will always be the bottleneck when loading maps or handling files. And a bottleneck isn't necessarily bad. Let's say that you have quad-SLI GTX 590's and an i7 2600K or 990X. If the CPU isn't enough then it will simply be impossible to remove the bottleneck. There's nothing faster. Maybe an SR-2 with 2 CPU's would have more processing power, but they wouldn't remove the bottleneck in a regular game that doesn't support more than 4 or 6 cores. Is that bottleneck bad? You'd rather dump one GTX 590 to remove the bottleneck?
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post #13 of 23
Quote:
Originally Posted by leafan101;14637343 
Maybe when booting up and opening/loading programs. Correct me if I am wrong but a decent HDD won't affect FPS in games.

He's talking about computer performance in general, not specifically games.

Unfortunately it seems the masses don't consider all the variables in computing to determine bottlenecks. In games, your resolution is often not considered. If you are running a GTX 580 at 1024 x 768 rez then you will have bottleneck issues. Get a better monitor (or 3 biggrin.gif) and all your worries might disappear! Or they may not... there are other variables.

I have seen people cry about an AMD 1090T CPU bottlenecking their Radeon 6970 GPU but not once considered the fact they had a paltry 1440 x 900 resolution creating it. So you could spend $300 on a slightly better CPU or $200 (or less) on a nice, big, beautiful monitor to render your games at 1920 x 1080...
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post #14 of 23
Also:

1: Every PC has bottlenecks. Yes, plural, bottenecks.
2: Which piece of hardware is the bottleneck depends on what app you're running.
3: You cannot have a PC without bottlenecks.
4: The ONLY time a bottleneck is BAD is if it's seriously hampering the performance of an otherwise capable system, or you yourself NEED or EXPECT more performance in certain apps/games.

Example 1: 8800GT used for Crysis 2 on a 2600K at 1080p. The 8800GT is a GAMING bottleneck and is indeed a problem for adequate framerates.

Example 2: E8400 at 4.3 with a 560 Ti used to play Left 4 Dead 2 and video encoding. The E8400 is not a bottleneck in L4D2, but IS a bottleneck in vid encoding compared with a quad.

Example 3: 2600K at 5.0 with two GTX 580s and a 1TB platter drive. To me, that rig is bottlenecked in game loads, because I know how fast an SSD or RAID SSDs load games. To the user, it's not since he/she doesn't know any better and doesn't perceive a need for faster loads.

It can go on and on depending on the apps the PC owner uses most and what they expect for performance.

The bottom line is, you CANNOT have a PC without bottlenecks. Whether or not there is a PROBLEM depends what the user expects from performance in specific apps.
Edited by 2thAche - 9/7/11 at 8:07am
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post #15 of 23
Thread Starter 
Updated with some new content
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post #16 of 23
i was getting 32 frames per second in guildwars 2 at 3.4ghz and i get 75 to 103 frames per second after i overclocked to 4.2ghz


the cpu had to do a lot of non graphical calculation calculated at a set rate, and that used most of it, starving the gpu of data to crunch
post #17 of 23
Thread Starter 
Quote:
Originally Posted by Angelus359 View Post

i was getting 32 frames per second in guildwars 2 at 3.4ghz and i get 75 to 103 frames per second after i overclocked to 4.2ghz
the cpu had to do a lot of non graphical calculation calculated at a set rate, and that used most of it, starving the gpu of data to crunch

yessir.gif Then we can definitively say that the CPU was your bottleneck. thumb.gif
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post #18 of 23
Great post, man, even by today's standards. I wish everyone that wanted to alter any part of a PC (aftermarket changes, as in OC, etc) should be required to know this. Young kids will throw out "bottleneck" at the drop of a dime, I swear, lol. Great job!
   
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post #19 of 23
Quote:
Originally Posted by Angelus359 View Post

i was getting 32 frames per second in guildwars 2 at 3.4ghz and i get 75 to 103 frames per second after i overclocked to 4.2ghz
the cpu had to do a lot of non graphical calculation calculated at a set rate, and that used most of it, starving the gpu of data to crunch

As you can also see, as stated by arenanet, GW2 is currently CPU bound.

EDIT: sorry for being off topic here.
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post #20 of 23
I have a bottleneck question, or rather I am looking for a recommendation. I pretty much only play CS:S and L4D2 on my Signature rig. Right now I can only play both on low-med settings at 25-30fos 1920x1080. I am wondering if it is my gpu that is causing this performance. or if it is my computer as a whole. was considering getting a gtx 460, which I know will be bottlenecked by my cpu but will it allow me to play older games such as L4D2 and CS:S on high at that resolution? or can you suggest a better card to upgrade to.

thanks for any input
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