is my GPU being Bottlenecked by CPU ?

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Liquidfil

Honorable
Sep 24, 2013
21
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10,510
Hi !
just wondering, is my GPU being bottle-necked by my CPU. i have a

GPU: EVGA GTX 770 w/ACX cooling 2GB
CPU: AMD FX 8120 3.1 GHZ (not overclocked)
MOBO: asus m5a78l-m/usb3
PSU : 850w thermaltake bronze cert
RAM: 16GB kingston

if it is being bottle-necked any recommendations ? preferably AMD since the mobo has AM3+ socket.

Thanks in advanced !
Filipe
 
Solution
sincreator
Well here is the top CPU that AMD offers, The FX-9590 4.7ghz(5.0ghz turbo). Even at WAY higher clock speed it still gets held back slightly. You may benifit by getting an aftermarket cooler and OCing your current CPU to match one of these chips if possible(should be). : http://www.xbitlabs.com/articles/cpu/display/amd-fx-9590-9370_5.html#sect0

These chips are clocked in at 4.4ghz for the FX9370(turbo to 4.7ghz), and the FX9590 clocks in at 4.7ghz(5.0ghz turbo). So if you were to overclock your current CPU to match one of these chips, the performance expected will be what you see in the link I provided.

PS: AMDs chips use A LOT of power when pushed this high. Felt I should warn you. ;)

EDIT: With the board you currently have...
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sincreator

sincreator

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May 27, 2009
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In some games that are more cpu bound yes: http://www.xbitlabs.com/articles/cpu/display/amd-fx-8350_6.html#sect0

These tests were ran on a GTX 680 which is pretty much the same as your card. All the games tested were known to be more cpu dependant games. If a game relies more on the GPU, you will not be bottlenecked. Also as the resolution and graphics settings increase, the bottleneck reduces as well. At higher settings and resolution you will also get lower performance overall of course. :p

 
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shotgunz

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Dec 17, 2011
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It depends on which games you are playing. The worst case I've seen is on world of tanks, this guy is using a FX 8350 and world of tanks uses only one and a half cores, only letting his GTX 660ti run at 19% load. Notice the 97% cpu load on the first core and very little on the rest.

eAcClA6.jpg
 
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L

Liquidfil

Honorable
Sep 24, 2013
21
1
10,510


yeah ive noticed that some games only use a small amount of CPU power reducing GPU power, in this case i haven't come across with games that ive played.

thanks for the reply.
 
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cin19

cin19

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Mar 14, 2011
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The cpu does not bottleneck the gtx770, but the MB is not good for the amd fx 8 series, in the link you can see the MB has only 4+1 power phase ( VRMs) that is same the M5A88-M (EVO), which can't handle the fx 8150. https://spreadsheets.google.com/spreadsheet/pub?key=0AgN1D79Joo7tdE9xMUFlMEVWeFhuckJEVF9aMmtpUFE&gid=4
If you want to keep the FX8120 then get the M5A97 (R2.0) or GA-970A-UD3P, or get the fx6300 with asus m5a78l-m/usb3.
 
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sincreator

sincreator

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May 27, 2009
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Well here is the top CPU that AMD offers, The FX-9590 4.7ghz(5.0ghz turbo). Even at WAY higher clock speed it still gets held back slightly. You may benifit by getting an aftermarket cooler and OCing your current CPU to match one of these chips if possible(should be). : http://www.xbitlabs.com/articles/cpu/display/amd-fx-9590-9370_5.html#sect0

These chips are clocked in at 4.4ghz for the FX9370(turbo to 4.7ghz), and the FX9590 clocks in at 4.7ghz(5.0ghz turbo). So if you were to overclock your current CPU to match one of these chips, the performance expected will be what you see in the link I provided.

PS: AMDs chips use A LOT of power when pushed this high. Felt I should warn you. ;)

EDIT: With the board you currently have, overclocking won't be much of an option either, So you would need a new motherboard at the very least to OC your current chip, and a good aftermarket cooler. I don't really think it's worth spending too much money on right now. Just find out what the limitations on your current board are and just overclock your current cpu as high as you can while still staying safe.
 
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Solution
L

Liquidfil

Honorable
Sep 24, 2013
21
1
10,510


ok thanks for the heads up, i will consider this as a possible solution :D
 
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L

Liquidfil

Honorable
Sep 24, 2013
21
1
10,510


since the machine was built by a company, i installed my own stuff in over time and the mobo is the last thing that i havent changed yet, so by getting one of those suggested boards will i see an increase in performance ?
 
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L

Liquidfil

Honorable
Sep 24, 2013
21
1
10,510


thanks for your help dude ! i will get a new mobo and then overclock this chip :)
 
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