Will i7 4790 bottleneck RTX 2080Ti??

[Pigypop]

Hi, i'm about to upgrade my GPU to RTX 2080 Ti. I have an i& 4790 non K. My monitor is an ASUS 1440p 144Hz ROG. Does the upgrade worth?

 

[boju]

4790 will be fine, you'll see cpu usages in high 80s at those frame rates with the help of Hyperthreading which will actually do better than a single threaded 6 core 8600k that is running even higher cpu usages into high 90s with no Hyperthreading and with that brings potential to stutter.

Youll also need 16GB ram minimum with a card like this to help buffer vram otherwise the pagefile will be used more often and that too drags performance.

 

[Pigypop]

And one more question! I have seen some videos showing a 1080ti paired with i7 4790 and with i7 8700k. And the banchmark shows 20fps more in the 8700k. So if i pair my 4790 with rtx 2080ti will i see anything over my current 1080??

 

[boju]

My 2600k 4.5 with 1080Ti gets slightly less fps than an 8700k 4.9. 8700k is a good processor and so is yours. You'll see an improvement over 1080.

Look at benchmarks by Tom's, Anandtech and Techspot not youtube videos.

 

[sizzling]

The 4790 is not better than a 8600k in any way. The 4790 is still very good but the 8600k beats the 7700 for gaming.

 

[Pigypop]

Well im going to upgrade sometime my mb cpu and ram. But iam worried for now i will spend much money and it would be a shame to see lags cause of the cpu.

 

[sizzling]

You might not get 100% from a 2080Ti in all games but if you plan on a cpu upgrade anyway then I vote go for it.

 

[Pigypop]

It wont cause stutters and lag in anyway right? It just wont use it fully? Rtx 2080 non ti doesnt worth over my 1080 i think.

 

[boju]

8600k is faster single core but thats where it ends. It doesn't have Hyperthreading nor do games spread the load across 6 cores effectively enough to prevent the primary core reaching 100% usage. 8600k is overrated and 4c 8t (Primary core with an additional thread) is doing better in games today.

Interesting video.
[video="https://www.youtube.com/watch?v=Qo3EJzHuXok"][/video]

 

[Pigypop]

4790 has hyperthreading and 2 threads per core right? That means it can still do well?

 

[boju]

https://www.tomshardware.com/news/intel-9th-generation-9600k-overclock-benchmarks,37928.html

Recent news thread talking about 9600k which now 9700k will be in the same boat and no Hyperthreading. Maybe 5 or so years ago when Hyperthreading wasn't a great deal those were the days where i5's were the go to CPUs and people saying i7s are a waste. But! Now those same older gen i7's are coming back in a big way thanks to Hyperthreading. It would be silly to get any CPU at this present day without it.

He talks about the effectiveness of Hyperthreading and i agree with him.

Sure the physical cores beat them, but being able to service more threads is very beneficial.
Even in terms of pure performance, surprisingly the 6C/6T 8600k (at 50% more cores) performs pretty much in a similar way to the 4C/8T 7700k, while the 9700k at 8C/8T has only a 33% core advantage compared to the 8700k's 6C/12T, making it a much more questionable choice.

While there has been a long-lasting discussion on hyperthreading in games, the quad core i7s are proving right now that it's exactly where the largest advantage lies, as the last few threads are rarely as demanding (due to games being the furthest from offering a symmetrical load across all threads) and just being able to service those threads without needing the full attention of a single-threaded core is perfectly good enough. Basically while having less cores might lower your fps a bit, those extra threads essentially prevent stuttering caused by having threads on hold. In that regard, I believe a 6C/12T CPU would be a better choice than a 8C/8T CPU, as the latter is likely to choke faster, given enough threads that need to be run asap thrown at it (such as in gaming).

Sure, the problem starts when we run software that's able to divide the workload into >4 (for HT quad-cores) super heavy threads capable of loading CPU cores to the max, but with gaming, that's not yet the case - you usually need to service a few main fast threads and a few less demanding ones popping up, including system interrupts, at the same time. In this regard, the hyperthreaded 6C and 8C will add a similar longevity advantage, especially where games are concerned. Even more so in case of the 6C/12T vs 8C/8T, where the hypethreaded hexa-cores are able to service 50% more threads at a time, which might actually turn out better in the end than having a 8C/8T processor. I suspect the 8c/8t will perform similarly at best when fully loaded by heavy threads (with extremely rare non-HT workloads doing better), and be a worse choice in a lot of workloads that rely on a few main threads and are heavy on high-prority light threads at the same time, which is more typical of where everyday usage has been going.

Tl;dr There are going to be workloads that not only are faster on the hyperthreaded units, but workloads that are able to service unevenly demanding threads at the same time (with a few demanding and a few less demanding threads) will benefit from being able to run those extra processes at the same time, even if each of them will be a bit slower. That is very beneficial in perhaps more scenarios than just having 33% extra physical cores.

 

[boju]

4790 has hyperthreading and 2 threads per core right? That means it can still do well?

Of course. look at all the posts regarding high CPU usages with 8600k, you'll be amazed.

 

[Pigypop]

So in your opinion will it be ok to go for rtx 2080ti? Will it be ok? Is it worth at last upgrading my 1080 to 2080ti?

 

[boju]

So in your opinion will it be ok to go for rtx 2080ti? Will it be ok? Is it worth at last upgrading my 1080 to 2080ti?

https://www.tomshardware.com/reviews/nvidia-geforce-rtx-2080-ti-founders-edition,5805.html

Test system: MSI Z170 Gaming M7 motherboard with an Intel Core i7-7700K CPU at 4.2 GHz

4790 3.6GHz is not far off from a 7700k

https://www.gamersnexus.net/hwreviews/2744-intel-i7-7700k-review-and-benchmark/page-6
GPU: GTX1080 BF1 Dx11

Can see in less demanding resolution, more a CPU bottleneck (1080p) even 2600k stock (3.4GHz) is still pushing an GTX1080 over 100fps, an 4970 would be just below 4790k. Can compare this with Tom's review of BF1 in 1440p despite being Dx12 the 7700k is still able to push 2080Ti to 164fps in BF1. Worse case your 4790 would be no more than 10fps less compared 8700k.