2600K to 4790K or 5820K

[Richard Sennett 2,499]

For me at the price of the 5980 - no brainer I would go for the 4790K and wait for probably two years for newer technology - to invest 1000 dollars just for the cpu not counting all the other hardware you will need to buy - the performance difference doesnt warrant that much investment at this point in time

[rototom 198]

My 5820k went to 4.7 with ease. I only changed 2 values in BIOS. I could push it more if I wanted but the frame rates have never left 30 regardless of what I'm running. I use ORBX, REX textures with ASN, NGX and a whole lot more. However I went with the 5820k mainly because I run X-plane as well and DCS so I wanted to find a balance for all my sims.

[Christopher Low 5,352]

I am not convinced that a 4790k CPU (or any other new CPU for that matter) will provide dramatically enhanced performance in FSX/P3D over a 2600K @ 4.5Ghz, considering that you already have a decent GPU. IMO, the last few iterations of CPU have been more akin to "mild evolution", rather than "significant revolution".

[zemez 184]

My 5820k went to 4.7 with ease. I only changed 2 values in BIOS. I could push it more if I wanted but the frame rates have never left 30 regardless of what I'm running. I use ORBX, REX textures with ASN, NGX and a whole lot more. However I went with the 5820k mainly because I run X-plane as well and DCS so I wanted to find a balance for all my sims.

 

How is your ground texture loading with your 5820k? Im considering that CPU too..

[rototom 198]

How is your ground texture loading with your 5820k? Im considering that CPU too..

 

For the most part, I haven't noticed any texture loading on the fly. There is the odd time when I'm flying around a major addon airport and I can see some textures popping up a bit late. One thing that has improved enormously is when you go from external views back to the VC and you can see VC textures being reloaded. This is almost instant now. I'm not sure if the memory helps this but I also run DDR4 at 2666. That might help since limited memory space is probably the biggest bottleneck for texture loading.

[whitav8 98]

My 5820k went to 4.7 with ease. I only changed 2 values in BIOS. I could push it more if I wanted but the frame rates have never left 30 regardless of what I'm running. I use ORBX, REX textures with ASN, NGX and a whole lot more. However I went with the 5820k mainly because I run X-plane as well and DCS so I wanted to find a balance for all my sims.

I assume that the two values changed were the multiplier (47) and core voltage? (1.2?)   In the other thread with Rob A.'s new machine, we see that he has changed his BCLK to 125 from 100 and is running his 5860 at 4.5Ghz

 

Thanks

Dave

[JDWalley 354]

My 5820k went to 4.7 with ease. I only changed 2 values in BIOS. I could push it more if I wanted but the frame rates have never left 30 regardless of what I'm running. I use ORBX, REX textures with ASN, NGX and a whole lot more. However I went with the 5820k mainly because I run X-plane as well and DCS so I wanted to find a balance for all my sims.

I assume you're water-cooling? It isn't mentioned in your profile.

[westman 257]

Have a lot of systems Intel and Amd , my sim pc is a 4670k @5.1ghz custom water and 980Strix.

Have tested my Haswell-E CPUs on fsx , custom water @4.9ghz (5820k,5930k and 5960x)

The texture load was faster ( placebo ?) fps not as high as the 4670k.

Run the ram at 3200mhz cl13.

 

The Old SB is not close to the Haswell, had a fast 2700k @5.4ghz that one is not close to the 4670k.

 

Skylake? NDA

[leghorn 76]

Thank you, westman for those comparisons..I have a stable 2600k @ 4.9 so i definitely needed a purpose for buying the 4670k 

[ckyliu 1,749]

The idea is to get as much as possible from the single core. So a single threaded performance is what really counts to get as much FPS as possible.The question is if 5820K has a better single threaded performance than 4790K, them being basically the same CPU, the 5xxx series being a refresh, as I understand it?

On that basis I'd stick with your 2600k! At the same clock speed, I don't think a 4790K will be noticeably quicker than the 2600K for a single threaded application. The 2600k can be overclocked higher than later processors because the larger die size dissipates heat more effectively (Sandybridge were 32 nm processors, Ivybridge onwards are 22 nm and have more stuff within the chip too).

 

I wouldn't even consider the 5820K, it's a lot more than the 4790K and you're not likely not notice the difference!

 

Save your money for Skylake or even Icelake.

[westman 257]

On that basis I'd stick with your 2600k! At the same clock speed, I don't think a 4790K will be noticeably quicker than the 2600K for a single threaded application.

Have you test it? My observations is that a Haswell @4.7 is faster than the 2700k @5.4,

Better IPC and you can run fast mems in my case 2800mhz cl10 the 2700k 2133mhz cl7-8.

 

Fsxmark 11 is a good test to see how efficent your system is , almost 100% CPU bound.

 

In single tread apps or CPU bound apps like fsx p3d the memspeed is important.

[ckyliu 1,749]

To be honest I'm only postulating on that specific point, not basing on personal experience. Although my non-FSX friends have confirmed the 2600k it a lot easier to cooler than later Intel architectures. I still run a 2500k myself and I've no plans to replace it any time soon, as the performance is still good.

 

I hadn't considered the impact of higher memory speeds, but that being the case surely it would be pertinent to wait for Skylake and get DDR4? (I'm working off the assumption the OP would otherwise use their existing DDR3)

 

It's expected Skylake will be on sale by September, and the K series ones shouldn't be far behind. Or perhaps consider the Broadwell DT series as that will fit Haswell motherboards? Even if these new processor don't improve much over the 4760K, I'd imagine the 4760K prices will then drop.

[ckyliu 1,749]

Just FYI, Skylake is being discussed at

http://forum.avsim.net/topic/471297-more-skylake-details/?p=3268852

and the first chips will hit the market in August

[rototom 198]

I assume you're water-cooling? It isn't mentioned in your profile.

 

Yes, for sure. I'm using an H100i.

[Jimm 437]

Oooh, Oooh, let me chime in here with a great baseline comparison.

 

I have an Origin Eon-15X Laptop, yes laptop, but it has a desktop processor in it, the i7-4790k, which has been overclocked to 4.5ghz, coupled with an nVidia GTX-980M (8gb).  I can fly the PMDG 737-NGX with full ORBX scenery active and REX4 weather...no issues whatsoever.  I couldn't be happier.  Of course, I am running FSX:SE with DX10.

 

-Jim

On that basis I'd stick with your 2600k! At the same clock speed, I don't think a 4790K will be noticeably quicker than the 2600K for a single threaded application. The 2600k can be overclocked higher than later processors because the larger die size dissipates heat more effectively (Sandybridge were 32 nm processors, Ivybridge onwards are 22 nm and have more stuff within the chip too).

 

I wouldn't even consider the 5820K, it's a lot more than the 4790K and you're not likely not notice the difference!

 

Save your money for Skylake or even Icelake.

After Skylake, intel will announce a new line of processors, building off of Skylakes success:

 

2016Q1: Rikki Lake

2016 Late Q4: Veronica Lake

 

 

-Jim