Gaming CPU

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Don Karnage

Platinum Member
Oct 11, 2011
2,865
0
0
1080p DX-11 Gaming Evaluation. That is the topic of my review.

First line in the review.


Im not trying to bench the CPU or the GPU. Im trying to show you what performance to expect when gaming at 1080p with a high end GPU paired with those three processors.

The scenario is simple. You have $500-550 to spend for the GPU. You buy the HD7970 and you have a 1080p 60Hz monitor. Does any of the three CPUs of the review will bottleneck your new High-End GPU in today's DX-11 games at 1080p ??? There are some Games that Intel CPUs are faster by a few fps and FX is faster in others but most of the DX-11 games are GPU limited.

Will Overclocking your CPU give you any substantial performance gains in today's DX-11 Games at 1080p ??? In some Games it will, in most of the others it will not because your GPU will dictate the performance limit.

Benching at 1024x768 will not give you any valuable data when you actually gaming at 1080p. Core i5 2500K may be 2x faster than FX at 1024x768 but at the resolution and with the IQ settings you are actually playing at (1080p) it doesn't matter because the game is GPU limited.

In the link in your sig. Why do you test the 8150 at 4.6Ghz and the 2500K at 4.0? Test them all at the same speeds or the testing is flawed and irrelevant.
 

AtenRa

Lifer
Feb 2, 2009
14,003
3,361
136
In the link in your sig. Why do you test the 8150 at 4.6Ghz and the 2500K at 4.0? Test them all at the same speeds or the testing is flawed and irrelevant.

I have explained before that i didnt have more time. I had to give the HD7970 back. Originally i was planing on benching the Core i5 2500K at default, 4GHz and 4.5GHz. But as you see from the gaming graphs most of the Games are GPU limited and so, the Core i5 at 4.5GHz or higher would not perform any higher than at 4GHz in the majority of the games.
 

Don Karnage

Platinum Member
Oct 11, 2011
2,865
0
0
I have explained before that i didnt have more time. I had to give the HD7970 back. Originally i was planing on benching the Core i5 2500K at default, 4GHz and 4.5GHz. But as you see from the gaming graphs most of the Games are GPU limited and so, the Core i5 at 4.5GHz or higher would not perform any higher than at 4GHz in the majority of the games.

For single GPU's a FX or 1100T overclocked will be fine but what happens when we get to SLI? Thats the underlying problem that no one especially amd fans want to discuss. So you save 40 bucks going with a 8120 over a 3570K then shoot yourself in the foot when wanting to go to a 2 card setup.



 
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AtenRa

Lifer
Feb 2, 2009
14,003
3,361
136
I haven't used SLI with the FX yet so i cant comment on that for now. But let me say that SLI on AMD chipset's is new and perhaps we'll have to wait for more mature drivers.

For now, SLI is not performing well with AMD CPUs so you better stay with Intel for the moment.
 

boxleitnerb

Platinum Member
Nov 1, 2011
2,602
5
81
1080p DX-11 Gaming Evaluation. That is the topic of my review.

First line in the review.


Im not trying to bench the CPU or the GPU. Im trying to show you what performance to expect when gaming at 1080p with a high end GPU paired with those three processors.

The scenario is simple. You have $500-550 to spend for the GPU. You buy the HD7970 and you have a 1080p 60Hz monitor. Does any of the three CPUs of the review will bottleneck your new High-End GPU in today's DX-11 games at 1080p ??? There are some Games that Intel CPUs are faster by a few fps and FX is faster in others but most of the DX-11 games are GPU limited.

Will Overclocking your CPU give you any substantial performance gains in today's DX-11 Games at 1080p ??? In some Games it will, in most of the others it will not because your GPU will dictate the performance limit.

Benching at 1024x768 will not give you any valuable data when you actually gaming at 1080p. Core i5 2500K may be 2x faster than FX at 1024x768 but at the resolution and with the IQ settings you are actually playing at (1080p) it doesn't matter because the game is GPU limited.

The last paragraph first:

I do not agree, it will give you valuable data when gaming at 1080p. You understand that there are GPU and CPU limits in games, even DX11 games, right? Your poor choice of benchmarks/timedemos only highlights GPU limits when in reality the CPU influence can be much larger. Zoom out in Civ 5 and scroll about the map or play a medium to large battle in Shogun 2 and you will clearly see that. Btw especially in these games the Intel CPU will give you shorter loading times (terrible in Shogun 2) and shorter transition times between rounds (Civ 5).

Your benchmarks are preselective, they don't show the complete picture. They don't show what CPU would be able to maintain (or come close to maintaining) 60fps, they don't show scenarios where the CPU is really taxed.

The only scenario where the CPU is basically irrelevant is when even a slow CPU can push 60fps and you don't need more.

Btw, if the CPU is so irrelevant in your opinion, why not recommend a cheap Athlon X4 over the FX? Why does AMD use the fastest Intel CPUs to benchmark their own graphics cards? Why are the fastest Intel CPUs used in almost every GPU review on the web?
 

Durvelle27

Diamond Member
Jun 3, 2012
4,102
0
0
It's a topic for another thread but I'll answer anyway. It does in the fact that when you use vsync you're stuck at 60fps on a 60hz monitor. If you remove vsync you get screen tearing. With a 120hz monitor you can use vsync and go all the way to 120fps which is a lot better. 120hz monitors generally show motion at 60fps as a smoother video to your eye. Some people claim it's placebo but side by side I can tell. I'm going to upgrade to 120hz myself in the near future.

When testing CPUs and locking to 60hz you're limiting the CPU's ability to push framerate and lowering the load. Games like Battlefield 3 show extremely different characteristics when you remove the 60hz limit and turn vsync off. The CPU starts to have a hard time keeping up with the GPU as it's load goes up.

ok i have a 3D 1080p 60Hz tv should i get a 120Hz monitor
 

Ferzerp

Diamond Member
Oct 12, 1999
6,438
107
106
There are some people that I wonder just what evidence and data would be required in order for them to stop evangelizing poorly performing products.

I suspect that short of a product that totally does not function (that is, won't even let a PC post, because I'm sure there would be some argument about how glorious it worked when it worked if it managed to only crash, say, once every 15 minutes), that it really makes no difference how the product actually performs, their mind is made up (and was before it was even released, purely based on the color of the box).
 

Black96ws6

Member
Mar 16, 2011
140
0
0
AtenRa's results right here would be enough to sway me away from Bulldozer:

Compare the minimums and average results between the 2 chips for these 2 games:





Then take into account the 2500k is clocked 600Mhz LOWER than Bulldozer in those graphs. The results would be even worse if the clock speeds were the same.
 

SickBeast

Lifer
Jul 21, 2000
14,377
19
81
yea that's true but i couldn't find a decent nvidia card that will last at least 3 years
You want a GPU that you can get 3 years out of paired with the Bulldozer? That would be a GTX 680 but it will be heavily bottlenecked even if you overclock.

Look, over 3 years you're probably going to pay $50 extra in electricity with Bulldozer.

Not only that but it's obsolete right from the start.

I think you should cut your losses, sell your AM3+ motherboard and go with a 2500k or an Ivy CPU.
 

SickBeast

Lifer
Jul 21, 2000
14,377
19
81
Benching at 1024x768 will not give you any valuable data when you actually gaming at 1080p. Core i5 2500K may be 2x faster than FX at 1024x768 but at the resolution and with the IQ settings you are actually playing at (1080p) it doesn't matter because the game is GPU limited.
It still shows that the 2500k is twice as fast as the Bulldozer in terms of gaming performance and it will last twice as long as well.

It's a useful theoretical benchmark that gives good insight into the potential of the processor.
 

Puppies04

Diamond Member
Apr 25, 2011
5,909
17
76
Your overclock is weak. M0re volts

I had it at 4.8 for months, tuned it down to 4.5 and it made 0 difference to anything I do, turned it down to 4ghz to check voltages for someone who wanted help with their first overclock and it still made no difference.
 

borisvodofsky

Diamond Member
Feb 12, 2010
3,606
0
0
I had it at 4.8 for months, tuned it down to 4.5 and it made 0 difference to anything I do, turned it down to 4ghz to check voltages for someone who wanted help with their first overclock and it still made no difference.

What do you do then? just browse the internet? :\
 

Puppies04

Diamond Member
Apr 25, 2011
5,909
17
76
What do you do then? just browse the internet? :\

Proper smart ass aren't you.....

How about you stick to giving advice when people ask for it, my overclock is more than adequate for what I need, the day that it isn't will be the day I raise it. Until that day i would rather not risk the longevity of my CPU and have my electricity bill go up for 0 discernable benefit.
 

AtenRa

Lifer
Feb 2, 2009
14,003
3,361
136
It still shows that the 2500k is twice as fast as the Bulldozer in terms of gaming performance and it will last twice as long as well.

It's a useful theoretical benchmark that gives good insight into the potential of the processor.

When the Game is transitioning from being CPU limited at 1024x768 to GPU limited at 1920x1080 then you dont get any usable performance data from benching and testing the CPU at lower resolutions.

By only testing at lower resolutions with low IQ settings you will only come to a wrong conclusion that CPU A is faster in gaming than CPU B, that is not correct when you actually playing at 1080p and the Game is GPU bound at that resolution.

What you really want to found out is if CPU A or B are bottlenecking the GPU at 1080p with IQ settings you are going to play each game.
 

boxleitnerb

Platinum Member
Nov 1, 2011
2,602
5
81
^ wrong...again.
You happily ignore what other people are writing and spread your FUD. Please stop.
 
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