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Another Bottleneck Question - i5 2500k, GTX 780

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  • GPUs
  • Bottleneck
  • CPUs
Last response: in CPUs
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February 6, 2014 8:42:32 AM

So I have had this computer for a few years now, I upgrade components as I see fit. Currently I have a GTX 780 and an it 2500k overclocked to 4.5Ghz stable.

Most games I can get my 60 FPS non stop with max settings..but there are a few here and there that take some dips. I am trying to figure out if it is game related, or hardware related issues that could be solved, etc.

I run some monitors in games and benchmarks and watch my values. Here is what I have observed that is throwing me

In the Resident Evil 6 Benchmark, I pull 60 FPS with the GPU and CPU usage not going over 50% if I recall, but at one point when there are tons of enemies on screen my FPS drops to 25-30. At this time GPU usage is still around 50-60% and CPU usage is different across the 4 cores. This is what confuses me...four cores I don't know if I need to watch all four or just one or what. Three of the cores were only at 25-40% while one was in the 90's.

So I am confused, CPU wasn't at full 100% and neither was GPU so I can't determine what the bottleneck is.

Similar thing happens in Borderlands 2. With all max settings and some tweaks I have a near constant 60 FPS...but in intense areas of enemies the FPS can drop to 30-45...and the GPU is never at 100%..but the cores are only as above. One may show 90's the rest are 40-50%.

I would assume these particular cases the game might be CPU bound when there are tons of enemies and things going on..but I was under the assumption that all four cores should hit 90-100% while the GPU would be below 100.

Any help would be appreciated.

More about : bottleneck question 2500k gtx 780

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February 6, 2014 9:53:34 AM

if you're not happy with an overclocked i5 2500k you're going to need to go to the 6 core socket 2011 and overclock that, still I don't think the hyperthreading on an i7 would help keep the frames up that much. Not sure, Borderlands 2 I'd get horrible fps dips unless I put it to medium, never tried re6 on pc...I like the old ones better. But a gtx 780 wouldn't be a bottleneck
February 6, 2014 10:28:47 AM

Yeah I know that a 3770k would be a small upgrade over the i5 2500k. I am really just trying to determine if there is a specific hardware component that MIGHT be bottlenecking my GPU only in certain situations.

I was thinking of upgrading to 2133 RAM and a 3770k, as my last and final upgrade til my next build (New mobo)..and yes aware that the boosts would be minimal...but really I was just trying to find out IF there was a bottleneck happening.
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a b à CPUs
February 6, 2014 12:03:14 PM

high speed ram doesn't matter much at all from what I've read, check out this Linustechtips vid on it

http://www.youtube.com/watch?v=dWgzA2C61z4

you could try the 3770k though, the 8 threads may help, but I don't think it's going to improve as much as you want it to. How many monitors do you game on and what resolution? If it's too many and/or a very high resolution you actually may need to SLI that gtx 780, because my 7950 is a bit below that and I play everything basically fine on Ultra 1080p at ~60fps even before I slightly overclocked my i5 3570k to 4.2ghz, it was fine at stock for me.

with how much quality "fast" ram costs, you'd probably be better off with another gtx 780
a b à CPUs
February 6, 2014 12:11:43 PM

I run my 2500k at 4.2 stable with a 780ti classified and I hqve same problems time to time. Its the games not being programmed well for multicore utilization. Bf4 I get over 100fps online with ultra settings and get 18,000 score on heaven. All ultra at 1080p.
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