AMD bottleneck?

[Briggsy]

9590 @ 6Ghz, or thereabouts based on IPC.

[SkilledRebuilds]

What AMD CPU will provide MAXIMUM performance CONSISTANTLY from high end GPU's.

None. Report away...

 

You'll lose performance across the whole FPS range.

MIN/AVG/MAX will all be lower.

 

Some titles it will be minimal to no difference, some titles it will be drastic!

 

I'm not saying it's making games unplayable to a degree, but it sure as hell isn't a maximum performance product, and will limit your ability to get the most out of high end graphics cards.

 

It's not even about AMD or Intel really... comparisons are silly between different architectures,..... take each for what it is.

It's 100% an IPC problem.

Whether an AMD CPU is using 40% of one core, or 80% of all cores in whatever game,... IPC is what matters, and is lacking to provide some GPU's with the required throughput needed.

Underlined for Importance

 

Meanwhile these dumbasses on facebook are trying to tell me it won't bottleneck at all...

This is why you ask on a tech-forum instead of having a discussion with facebook users (not saying they don't know, but find a more focused group to ask)

[UnbendingNose]

Experienced this first hand. Used to have an fx8350 and a gtx760, everything was fine. I upgraded to an r9 290 and kept the same CPU and started to notice bottlenecks. BF4 is a perfect example because of supporting mantle and dx11. My r9 290 would never go over 70% GPU usage and I got constant stutters with CPU usage all over the place. If I turned on mantle things would get better. GPU usage would be in the 90's % but it would still drop all too often down into the 40's. I said to hell with it and bought an i5 4670k and z87 board on sale. All my problems went away. BF4 runs the same on dx11 and mantle now, with 95 to 99 percent GPU usage. All my other games run much much much better after switching to the i5. I can't recommend AMD CPU's anymore if your going with a high end GPU like a gtx970 or r9 290 and up. There will be bottlenecks.

[i_build_nanosuits]

Experienced this first hand. Used to have an fx8350 and a gtx760, everything was fine. I upgraded to an r9 290 and kept the same CPU and started to notice bottlenecks. BF4 is a perfect example because of supporting mantle and dx11. My r9 290 would never go over 70% GPU usage and I got constant stutters with CPU usage all over the place. If I turned on mantle things would get better. GPU usage would be in the 90's % but it would still drop all too often down into the 40's. I said to hell with it and bought an i5 4670k and z87 board on sale. All my problems went away. BF4 runs the same on dx11 and mantle now, with 95 to 99 percent GPU usage. All my other games run much much much better after switching to the i5. I can't recommend AMD CPU's anymore if your going with a high end GPU like a gtx970 or r9 290 and up. There will be bottlenecks.

 

Similar story here, wen't from a 4.65GHZ FX-8320 + HD7950 GPU which was a good match to a GPU upgrade toward a GTX 780 and all hell broke loose with GPU usage hovering around from 60% to 85% in MANY AAA TITLES...and this is a GTX 780, not a 980 which is quite a step above...those FX processing cores are just plain too weak to feed such high-end graphics cards nowadays unfortunately...as mentionned above you'd need around 6GHZ out of them in order to run all games properly, but this is not possible.

[Demonking]

Similar story here, wen't from a 4.65GHZ FX-8320 + HD7950 GPU which was a good match to a GPU upgrade toward a GTX 780 and all hell broke loose with GPU usage hovering around from 60% to 85% in MANY AAA TITLES...and this is a GTX 780, not a 980 which is quite a step above...those FX processing cores are just plain too weak to feed such high-end graphics cards nowadays unfortunately...as mentionned above you'd need around 6GHZ out of them in order to run all games properly, but this is not possible.

Are you serious 6ghz that's insane.

[i_build_nanosuits]

Are you serious 6ghz that's insane.

 

Yes, if you look at single-threaded cinebench results for example you can clearly see that haswell at 3.4ghz greatly outperform FX at 5GHZ...so in order to get something that would have similar performance to say a 3.8ghz core i7 you'd need clockspeed in excess of 6ghz indeed.

 

https://docs.google.com/spreadsheet/ccc?key=0AlC81MjwelBgdEZNV3l6aHl1eUNwSUR4Rml0MXMzN1E&usp=sharing#gid=1

 

EDIT: well...looking at this it's in fact even worse than that...just look...5.35GHZ FX-8350 won't come even close to match an i5-4690K at 3.5ghz in single-threaded...you'd in fact need nearly 8GHZ to match a 4GHZ intel i7...

Edited February 10, 2015 by i_build_nanosuits

[rtpb5642]

Depends on the game but an 8350 at 4.5-4.7Ghz (easy to achieve that) will not bottleneck it much at all. Really only in cpu bound games

[Demonking]

Yes, if you look at single-threaded cinebench results for example you can clearly see that haswell at 3.4ghz greatly outperform FX at 5GHZ...so in order to get something that would have similar performance to say a 3.8ghz core i7 you'd need clockspeed in excess of 6ghz indeed.

 

https://docs.google.com/spreadsheet/ccc?key=0AlC81MjwelBgdEZNV3l6aHl1eUNwSUR4Rml0MXMzN1E&usp=sharing#gid=1

 

EDIT: well...looking at this it's in fact even worse than that...just look...5.35GHZ FX-8350 won't come even close to match an i5-4690K at 3.5ghz in single-threaded...you'd in fact need nearly 8GHZ to match a 4GHZ intel i7...

O__O i tell people this on facebook & they say i'm a intel fanboy now i have proof thanks

[SkilledRebuilds]

O__O i tell people this on facebook & they say i'm a intel fanboy now i have proof thanks

The ones that call you a fanboy, are one of two things...

 

Ignorant to the possibility their wrong.

Ignorant to the point of not even bothering to do the research!

 

Tell them to go to ANY tech site and ask there themselves.

Proof is in the pudding.