Do GHZ really affect the performance?

tjokrohw

Honorable
Jul 5, 2013
171
0
10,690
FOR EXAMPLE:
IF I HAD i5-4440 3.1GHZ and R9 270X, the performance would be good.
And If I change the i5-4440 to i5-4570 or even i5-4670 (3.2 GHZ/3.4 GHZ) will it affect the performance especially gaming?
 
Solution
Frequency can affect performance, but it depends on the game. The more dependent the game is on the CPU, the higher the potential performance improvement. It is also not 100% efficient; meaning if you increase the frequency by 10% your performance will not increase by 10%.

Going from 3.2GHz to 3.4GHz is a 6.25% increase in performance. So in the perfect scenario gaming performance will increase by 6.25%. In the real world performance gains will be from 0% to probably 3%.


Bioshock Infinite is an example of a game that is known for not caring too much about the CPU performance. Below are two benchmarks for overclocked i7-3770k and FX-8350 CPU with a GTX 680. Note that you do not get much performance increase from overclocking the...

WhiteSnake91

Distinguished
I've often wondered this myself, would a person be better off even with a cheap locked lower clocked i5 or getting a 6300 fx or 8320fx and overclocking them?

myself, I think it might not matter as much as making sure you have a good enough GPU

or, comparing a stock 3470 to say a 3570k at 4.4ghz
 

tjokrohw

Honorable
Jul 5, 2013
171
0
10,690


Do you think 3.1GHZ is good enough for VGA Radeon R9 270X?
Or should I upgrade to 3.2 or 3.4 one?
 

whitecat

Honorable


More than enough , but get the fastest you can
 
Frequency can affect performance, but it depends on the game. The more dependent the game is on the CPU, the higher the potential performance improvement. It is also not 100% efficient; meaning if you increase the frequency by 10% your performance will not increase by 10%.

Going from 3.2GHz to 3.4GHz is a 6.25% increase in performance. So in the perfect scenario gaming performance will increase by 6.25%. In the real world performance gains will be from 0% to probably 3%.


Bioshock Infinite is an example of a game that is known for not caring too much about the CPU performance. Below are two benchmarks for overclocked i7-3770k and FX-8350 CPU with a GTX 680. Note that you do not get much performance increase from overclocking the i7-3770k. Going from 2.5GHz to 4.0GHz (60% increase) the frame rate increases from 65 FPS to 69 FPS (6.1%). Going from 4.0GHz to 4.5GHz does not increase game performance at all; so 500MHz = 0 FPS. The performance increase is even worse for the FX-8350. Starting at 2.5GHz you would need to increase the frequency to 4.5GHz to get 1 extra FPS.

http://www.techspot.com/review/655-bioshock-infinite-performance/page5.html

CPU_01.png


CPU_02.png



SimCity is known for being a CPU intensive game. It is also known for taking a dump of those people who loved that series in the past because EA forced SimCity (a traditionally single player game) to be an online game which I suppose ruined the entire experience for veteran "SimCity-ers".

Again, starting with a base frequency of 2.5GHz, the game does experience an increase in performance as the frequency goes up. When the i7-3770k is clocked to 3.5GHz (40% increase), the FPS actually increased by 13 FPS (43%) which is pretty much unprecedented. I think you will find it extremely difficult to find another game than can do that. However, going from 3.5GHz to 4.5GHz only yields another 2 FPS. As for the FX-8350, going from 2.5GHz to 3.5GHz provides a 8 FPS increase (33.33%). However, going from 3.5GHz to 4.5GHz (28.6%) yields another 8 FPS increase (25%). FPS increases scales better on the FX-8350 than the i7-3770k, but as can be seen by the charts an i7-3770k @ 3.5GHz still beats a FX-8350 at 4.5GHz.


http://www.techspot.com/review/648-simcity-performance/page4.html

CPU_01.png


CPU_02.png


 
Solution

maxalge

Champion
Ambassador


Actually, those locked i5's offer performance that easily matches/beats overclocked amd processors with the deck stacked in the amd's favor with a game that uses as many threads as ya have.

For example BF4.


A 4.5 ghz 8350 barely eeks out a 1 fps win over a locked 3470 in arguably the best possible scenario.

http://www.techspot.com/review/734-battlefield-4-benchmarks/page6.html

Now imagine in games that only use 1-4 cores? Yeah.

Simcity clearly shows what happens.


http://www.tomshardware.com/reviews/gaming-processor-frame-rate-performance,3427-6.html

http://www.tomshardware.com/reviews/gaming-processor-frame-rate-performance,3427-8.html