Understanding of bottleneck in gaming

[veltix]

Bottleneck can be found when eg. I5 650 runs gtx r9 280x or r9290x at ultra. On demanding game it might bottleneck slightly or 50%? But if reduce to high or normal it won't bottleneck greatly , right?
2)playing latest games eg from 2017 using 2014 i5 650 might bottleneck. Require more cpu and high end tier,right?
Pls correct me if im wrong. Tks.

 

[Prey2big]

Lowering graphical fidelity will actually worsen the bottleneck, as the game become more CPU reliant.
Usually very few graphical options/game settings reduce the CPU work-load.

Im assuming you talk about the 'Intel Core i5-650'? I would say it is a fairly weak processor for todays games.

 

[cyclohexane]

I have no idea what the op is asking. Can you form complete sentences? Is this how people speak/write nowadays? Goddamn.

 

[bystander36]

CPU bottlenecking is usually tied closely to the FPS you get. The higher the FPS, the more it bottlenecks. It usually does not change based on graphical settings. That means that if you are bottlenecked by the CPU, lowering the graphical settings does not improve FPS. Generally speaking, if you are CPU bound, you can increase your graphical settings with no cost to your FPS.

 

[JeffMD]

A bottleneck is ANY one point in your computer that lowers the performance of everything else.

A CPU that bottlenecks is when the cpu is to slow to calculate environment data (collision detection, placing the pieces on the board), AI, networking, data, and sound (networking and sound usually will not stop the game from rendering though) and the GPU is left doing nothing for a period of time waiting.

A GPU bottleneck is where the cpu is done and the GPU is maxed out, and so the cpu ends up not doing anything.

Other bottlenecks are Memory speed (actually in most cases, faster memory always yields more FPS, but the increases is not big enough to warrant upgrading memory alone), hard drive speeds (mechanical hard drives ALWAYS reduce performance), and in non gaming situations where there is heavy data flow your motherboard and its PCI pipelines can be a source of bottle neck.

 

[veltix]

So in a case wherby i5 650 runs gtx 980 , cpu not fast enugh to supply info to 980 will cause jerking,lagging and stuttering in games. Games like codbo3 and doom4. But if putting gpu on par with i5 650 (lower clock speed),it will be alright?
@[member=jeffmd]

 

[JeffMD]

uhmmm...no.

Are you still running on a mechanical drive? upgrade to ssd if you havn't.

 

[veltix]

uhmmm...no.

Are you still running on a mechanical drive? upgrade to ssd if you havn't.

Running on hdd . So u wanna me switch to ssd from hdd?

 

[bystander36]

SSD will not improve gaming performance for the most part. It mostly only helps with load times. If you are ok with your load times, and not with your performance, then you don't have to upgrade it. That said, an SSD sure is nice on load times.

 

[veltix]

I plan to change my psu 300w to 550w or 500w. Recommend me a good gpu for smooth med-high gameplay (Single player,no aa,no overclocking, casual ). Games are from tdy: bo3,bf3-hardline, farcry3, fallout 4, metro last light, upcoming 2016oom4
@[member=bystander36]

 

[Denithor]

So in a case wherby i5 650 runs gtx 980 , cpu not fast enugh to supply info to 980 will cause jerking,lagging and stuttering in games. Games like codbo3 and doom4. But if putting gpu on par with i5 650 (lower clock speed),it will be alright?
@[member=jeffmd]

Not necessarily jerking or stuttering, more likely just lower FPS than expected with a GPU at a given resolution.

That said, the i5-650 is really weak chip by today's standards. Only a dual core chip, equivalent of an i3 by today's naming method. I'd suggest upgrading to an i7-860 (http://www.ebay.com/itm/Intel-Core-...761672?hash=item35f62317c8:g:OdQAAOSwp5JWU1sy for $67 on eBay) if you aren't scared of working inside your case. You'll likely have to remove motherboard, pull off heatsink, swap chips, apply new thermal paste (buy before), reseat heatsink then reinstall in case. You can find videos on Youtube if you haven't ever done this before.

EDIT: What resolution is your monitor? That really determines how much GPU you need.

 

[bystander36]

Just so you don't get confused, the higher your resolution, the lower your FPS will likely be, so you can get away with a slower CPU. The higher your FPS, the faster your CPU needs to be. For the most part, graphics settings have no effect on your CPU usage. Same goes for the resolution.

 

[PrincessFrosty]

Bottle necking occurs when the overall speed of the game (the frame rate) is dependent on the individual performance of several different components. Each frame requires a certain amount of work from each component, if component "A" finishes that work first and the whole system has to wait for component "B" to finish its job, before the entire frame can be drawn, then you would say that component "B" is a bottleneck to component "A".

If you're struggling to imagine this, think of it a bit like a factory assembly line where each stage of the assembly line has its own speed. For example a toy is produced by a machine at 10 toys a minute, and then a packer machine packs them at 8 toys a minute, and finally they're loaded onto trucks to ship out at 12 toys a minute.

The entire assembly line from start to finish can only run at the speed of the slowest stage, which in this case is the packing stage at 8 toys a minute, the other stages can go faster but it's just a waste to do so. In this scenario you'd say that the packing stage is a bottleneck for the rest of the assembly line.

In the real world with video games it's more complicated, different games make different demands from different components and so what component is the bottleneck in a system changes depending on the game and the settings you pick and also what components you use.

Normally when you want to increase your frame rate in games, you need to identify where the bottleneck is and then improve that component, typically this is either the CPU or the GPU, but can also be other things.