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Performance issues


Best Answer terry1966 , 05 May 2015 - 01:44 PM

the big performance difference is the gpu's , the hd6670 is much better than the r5 230 :- http://gpuboss.com/g...-Radeon-HD-6670 the cpu's are similar but the intel is better (in my opinion.)... Go to the full post »


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#1
Trepid

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Having an issue with performance on similar builds, the first build has an AMD Phenom IIx4, Radeon HD 6670 with 8 gigs of ram and is running Windows 7 Ultimate and i'm able to play WoW on ultra settings with no issue. The second build has an Intel Pentium G3240 Processor, AMD Radeon R5 230 and also has 8 gigs of ram and is running Windows 8.1 and i'm only able to play WoW on the lowest settings and that's with a bit of lag. What could the issue be? I've compared both pc's components and they are close in performance, just one is out performing the other. When I did a compatibility check on the second build the results stated I needed a better processor for the game, any insight?


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#2
Fusionbomb

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Hello Trepid... and :welcome:


After comparing those processors using this website, it's saying that the Intel CPU has better performance than the AMD.  To me, that doesn't make sense.  As a rule of thumb, I calculate processing power by multiplying the GHz by the # of cores.  In this case...


AMD Phenom IIx4  =  2.6 GHz x 4 cores  =  10.4 GHz

Intel Pentium G3240  =  3.1 GHz x 2 cores  =  6.2 GHz


Obviously, there's a significant difference between 10.4 and 6.2 GHz, and your compatibility check would seem to agree with me.  However, if the game were only utilizing a single core, then the Intel CPU would be marginally higher/faster (3.1 GHz compared to 2.6 GHz).

Maybe someone else can clarify things a bit better or offer more/better insight.  :prop:

 


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#3
terry1966

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✓  Best Answer

the big performance difference is the gpu's , the hd6670 is much better than the r5 230 :- http://gpuboss.com/g...-Radeon-HD-6670

 

the cpu's are similar but the intel is better (in my opinion.) even tho it does lose out slightly in multithread programs because it only has 2 cores compared to 4, but not by anywhere close to using the formula of Ghz multiplied by cores. that's fine for same architectures amd vs amd, intel vs intel but doesn't mean much when comparing apples to oranges or amd to intel cpu's.

there are way to many variables of why intel cpu's have a performance edge over amd's but in this case not least would be the fact the amd is built on a 45nm scale and the intel is built using a much newer 22nm scale, which means any data sent on the amd has twice as far to travel compared to the intel, so means the intel can get replies and work on new data in 1/2 the time if they were both running at the same speed.(doesn't exactly work like that but does give you an idea of what difference scale makes.)

 

personally i'd check the intel pc's power supply is up to installing the hd6670 and swap the graphics cards in the pc's over, so you have the best of both in the one pc. intel cpu and hd6670 graphics card. (if you do this make sure you remove all power from both pc's and discharge any residual power by holding the power button in for 5 seconds.)

 

:popcorn:


Edited by terry1966, 05 May 2015 - 02:01 PM.

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#4
Fusionbomb

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Good explanation, Terry.  Thanks for elaborating!  :cheers:


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#5
terry1966

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no problems. :thumbsup:

 

also if you look at the passmark single core performance difference in your link you'll notice the intel is nearly twice as high, so that also means the amd needs nearly two cores to do the same amount of work as the single core of the intel cpu.

 

intel 2x1777=3554

amd 4x942=3768

 

and why in multithreaded programs which can utilise all the cores, the the amd is slightly better, but not by as much as the ghz x cores formula would suggest.

i'd doubt in the real world you'd notice the difference between the 2 but in single threaded programs the difference is great enough so the intel would probably be noticeable in real world use, not that the amd would be slow, or slow enough to cause concern or be annoying.

 

:popcorn:


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