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Bottleneck? Asus GTX 460 with a Athlon X2 2.7ghz

Last response: in Graphics & Displays
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January 19, 2011 1:25:10 AM

Factory Parts
Compaq Presario windows 7 32bit
with 3GB DDR2 and a Athlon X2 2.7ghz
LG monitor with 1440x900 resolution.

Upgrades
Diablotek PHD 550w PSU + Nvidia Geforce 9500 GT

Planned upgrade
Asus GTX 460 786mb left with factory clock.

With the resolution being only 1440x900, would this prevent a bottleneck?
Or would I need a triple/quad core to prevent a bottleneck?


January 19, 2011 2:38:07 AM

I believe this is how it works, but correct me if I'm wrong:

If the res is lower, you get a CPU bottleneck because the GPU renders the scene so fast that the CPU can't keep up calculating the info that the graphics card needs. At higher resolutions, the GPU takes so long to render that the CPU is long finished with the data for the next scene.

At that resolution, though, you shouldn't be worried because even if there is a CPU bottleneck it won't be much and you should be getting easily enough frames even with the bottleneck, unless you plan to play Metro DX11 with 8xAA, which even that card couldn't handle at that res probably. What games?
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January 19, 2011 2:56:46 AM

well, you probadly get CPU bottleneck depend on the game you play. Take this for example :

Intel E2180 @ OC to 2.8 ghz / ASUS ENGT430

Dirt 2 : 50fps ( 800x600, low preset ), 50 fps ( 1440x900, low preset )

Starcraft 2 : when your army is about 100-200, even on lowest gfx settings, average frame rate is 20 fps

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a b Î Nvidia
January 19, 2011 6:43:05 AM

You should be fine even if you do get a restriction i would think you will be too busy enjoying your nice new Graphics card to notice.
Basically the 460 would run faster with an i5 CPU but then if you had an i5 already then it would run faster with a faster i7 CPU.
The problem comes when you pair a really fast GPU with something like an old single core chip p4 etc. Bottlenecking as far as im concerned is where the PC is physically/noticably impared in its performance due to one componrent or more not being capable of keeping up with the rest of the system. Im talking games running like a slide show here.

You will get restricted in terms of Max FPS but i doubt very much that you will get any serious issues. The performance differance should be night and day compared to the 9500.

Mactronix :) 
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January 19, 2011 12:58:30 PM

It's definitely a big bottleneck.

Bigger than you think.

I remember tom's doing a article with a X2 7850 at 2.8ghz and a HD4770 and it was seriously bottlenecking even that old card.
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a b Î Nvidia
January 19, 2011 1:49:37 PM

Which model is your CPU to be exact ? There is more than 1 Athalon X2 @2.7

Mactronix :) 
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January 19, 2011 4:35:24 PM

mactronix said:
Which model is your CPU to be exact ? There is more than 1 Athalon X2 @2.7

Mactronix :) 

Im not sure on the model as its not my PC, but would a 2.7ghz duo core probably be a AMD2+ socket? I have no idea how Processor sockets work.
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January 19, 2011 4:37:34 PM

paki_cuseo said:
well, you probadly get CPU bottleneck depend on the game you play. Take this for example :

Intel E2180 @ OC to 2.8 ghz / ASUS ENGT430

Dirt 2 : 50fps ( 800x600, low preset ), 50 fps ( 1440x900, low preset )

Starcraft 2 : when your army is about 100-200, even on lowest gfx settings, average frame rate is 20 fps


so a GTX 460 would cap at 50fps on max settings?
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January 20, 2011 4:28:40 AM

Best answer selected by zankuto.
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January 21, 2011 9:56:24 AM

zankuto said:
so a GTX 460 would cap at 50fps on max settings?
Maybe, depend on your CPU and game.
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