If a CPU benchmark test is done on a game, isn't the FPS limited by the GPU as well?
- Thread starter kaio37k
- Start date
It depends on what card they are using ultimately. In an ideal situation, the card(s) would out class the CPUs by a long shot, so the limits of each CPU would be apparent. In those tests, they were using Crossfired 7970s, so they should have been fine.
Whether or not the GPU is going to be an issue depends mostly on the game. I had a rig with SLIed 560TIs and a FX-6200. At times, frame rates would plummet to 20 to 25 FPS simply because of the CPU, my favorite example being the scene in Africa in the beginning with all the NPCs running around. It was unplayable. One of those cards in with an i5-3470S ran the game like silk. In a case like that, the CPU bottleneck is readily apparent.
Whether or not the GPU is going to be an issue depends mostly on the game. I had a rig with SLIed 560TIs and a FX-6200. At times, frame rates would plummet to 20 to 25 FPS simply because of the CPU, my favorite example being the scene in Africa in the beginning with all the NPCs running around. It was unplayable. One of those cards in with an i5-3470S ran the game like silk. In a case like that, the CPU bottleneck is readily apparent.
There was this one from a couple of years ago, but that's outdated now. It's a shame THG doesn't do a new one for 2013:-
http://www.tomshardware.com/reviews/game-performance-bottleneck,2737.html
The problem is, different games have different CPU vs GPU ratio's. Eg, Battlefield 3 Single-Player was more GPU limited (and ran 60fps even on some i3's for the most part), but multi-player on the same game was more CPU limited and needed an i5, so there isn't a "one size fits all" for even the same game, let alone all games.
For a i7-3770K, that's as fast as CPU's get and you're not going to be bottlenecked with that. You could drop down to an i5-3570K, and when OC'd to +4GHz, you're still not going to be CPU bottlenecked for most games out there.
This comes down to so many factors that a single guide would be daunting if not impossible. Primarily, it comes down to what you are doing. For example, BF3 draws more heavily on the GPU than CPU and ran well on my machine that balked at CoD: BlOps II. Some tasks, like Bitcoin mining, are almost entirely GPU dependent, with the CPU there pretty much to keep the computer on while the graphics cards work.
While it's older now, Tom's has an excellent article on bottlenecks I suggest you read.
http://www.tomshardware.com/reviews/game-performance-bottleneck,2737.html
This is focused on gaming and not other more esoteric tasks, but the same still holds true.
No problem gbryan. It just goes to show how hard it is to find a relatively simple "this GPU for this CPU" chart with recent hardware!
kaio37k - A general simple guideline:-
- For high end i5/i7 chips, just get the best GPU you can afford.
- For mid-range (eg, i3's), go for a 7790/7850 mid-range card.
- For budget Pentium, etc, chips, just get a 7750/7770 budget card.
It can't really be broken down into individual cards for individual CPU's because each game loads at different ratio's. Some MMORPG's can be very CPU heavy even with very weak GFX. Some FPS's can run flawlessly on i3's but have a very heavy load on the GPU.
The general consensus is that there are very few games where an i7 runs significantly faster than an i5. The biggest difference is that i7's are better if you do a lot of video encoding / 3D rendering work, and i5's are better for gaming overall (especially if you put the money saved into upgrading your GFX card to the next model up).
Edit: real world example - take ARMA3 a game whose engine has been traditionally CPU heavy:-
http://gamegpu.ru/images/stories/Test_GPU/Action/ARMA%20III%20Alpha/test/arma%203%20proz%20intel.jpg
As you can see, Hyper-Threading (greay bars) makes little difference, and even on an old i7-2600K, the cores (blue bars) are nowhere near maxed out. And that's about 10% slower than the i5/i7 3xxx series you're looking at - at stock speeds.
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