Upgrading from an Intel Core i7-2600K: Testing Sandy Bridge in 2019
by Ian Cutress on May 10, 2019 10:30 AM EST- Posted in
- CPUs
- Intel
- Sandy Bridge
- Overclocking
- 7700K
- Coffee Lake
- i7-2600K
- 9700K
CPU Performance: Rendering Tests
Rendering is often a key target for processor workloads, lending itself to a professional environment. It comes in different formats as well, from 3D rendering through rasterization, such as games, or by ray tracing, and invokes the ability of the software to manage meshes, textures, collisions, aliasing, physics (in animations), and discarding unnecessary work. Most renderers offer CPU code paths, while a few use GPUs and select environments use FPGAs or dedicated ASICs. For big studios however, CPUs are still the hardware of choice.
All of our benchmark results can also be found in our benchmark engine, Bench.
Corona 1.3: Performance Render
An advanced performance based renderer for software such as 3ds Max and Cinema 4D, the Corona benchmark renders a generated scene as a standard under its 1.3 software version. Normally the GUI implementation of the benchmark shows the scene being built, and allows the user to upload the result as a ‘time to complete’.
We got in contact with the developer who gave us a command line version of the benchmark that does a direct output of results. Rather than reporting time, we report the average number of rays per second across six runs, as the performance scaling of a result per unit time is typically visually easier to understand.
The Corona benchmark website can be found at https://corona-renderer.com/benchmark
We can see the sizeable difference in performance between the 7700K and the 2600K, coming from microarchitecture updates and frequency, however even overclocking the 2600K only halves that gap.
Blender 2.79b: 3D Creation Suite
A high profile rendering tool, Blender is open-source allowing for massive amounts of configurability, and is used by a number of high-profile animation studios worldwide. The organization recently released a Blender benchmark package, a couple of weeks after we had narrowed our Blender test for our new suite, however their test can take over an hour. For our results, we run one of the sub-tests in that suite through the command line - a standard ‘bmw27’ scene in CPU only mode, and measure the time to complete the render.
Blender can be downloaded at https://www.blender.org/download/
Similarly with Blender, the overclock only cuts the defecit in half between the 2600K and 7700K at stock performance. Add in an overclock to the 7700K, and that gap gets wider.
LuxMark v3.1: LuxRender via Different Code Paths
As stated at the top, there are many different ways to process rendering data: CPU, GPU, Accelerator, and others. On top of that, there are many frameworks and APIs in which to program, depending on how the software will be used. LuxMark, a benchmark developed using the LuxRender engine, offers several different scenes and APIs.
In our test, we run the simple ‘Ball’ scene on both the C++ and OpenCL code paths, but in CPU mode. This scene starts with a rough render and slowly improves the quality over two minutes, giving a final result in what is essentially an average ‘kilorays per second’.
POV-Ray 3.7.1: Ray Tracing
The Persistence of Vision ray tracing engine is another well-known benchmarking tool, which was in a state of relative hibernation until AMD released its Zen processors, to which suddenly both Intel and AMD were submitting code to the main branch of the open source project. For our test, we use the built-in benchmark for all-cores, called from the command line.
POV-Ray can be downloaded from http://www.povray.org/
POV-Ray is a little different, just because AVX2 is playing a part here in how well the newer processors perform. POV-Ray also prefers cores over threads, so having eight real cores means the 9700K gets a nice big lead.
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mr_tawan - Sunday, May 12, 2019 - link
Just upgraded to Core i7 4790 (from i5 4460) late last year. At first I was thinking about upgrading to the shiny Ryzen 7, but overall cost is pretty high considering I have my H97 mainboard with 16GB of memory. I don't want to shell out that much money and getting stuck at older platform, again.It does work ok, with the performance around the current gen Core i5 I guess (with less power efficiency). Consider what I paid, I think it's not too bad.
just4U - Sunday, May 12, 2019 - link
A interesting read there Ian. I started to notice a slow down on 2600K class systems a few years ago when I worked on them.. (I hadn't used one since 2014) For me.. If I can notice those slowdowns in real time then it's time to move away from that CPU. The 4790K appears to still be holding up ok but older 3000/2000 chips not so well.crotach - Sunday, May 12, 2019 - link
Still running 3930k Sandy Bridge.Maybe Ryzen 3000 will give me a reason to upgrade.
AndrewJacksonZA - Sunday, May 12, 2019 - link
Best quote out of the entire article:"In 2019, the landscape has changed: gamers gonna stream, designers gonna design, scientists gonna simulate, and emulators gonna emulate" :-)
But seriously though, for me, when I upgraded from a Core2Duo E6750 with 4GB of RAM to an i7-6700 (non-K) with 16GB of RAM, it was simply amazing. I was fully expecting that going from an i7-2600K to an i7-9700K would be similar - and it is for things like compiling but not for things like gaming.
Thanks for the aricle, Ian! Dig the LAN setup. :-)
Targon - Sunday, May 12, 2019 - link
Why would you test a CPU and use a framerate test from Civilization 6, rather than the turn length benchmark which is a true test of the CPU rather than the GPU? Turn based games SHOULD be there as CPU tests, and only caring about the framerates seems to be wrong.Oxford Guy - Sunday, May 12, 2019 - link
When your overclock fails in one test you're unstable.When it fails in four, as in this article, you're both unstable and laughable.
"Had issues". "For whatever reason". I will assume this is all intended to be humor.
DeltaIO - Monday, May 13, 2019 - link
Interesting article to read. I've only recently upgraded from my 2600k to the 9700k, even that was begrudgingly as the 2600k itself still works fine, however the motherboard simply decided to give up on me.I've got to say though, the difference in the subsystems (NVMe vs SSD makes for some great load times for pretty much everything) as well as other tangible benefits (gaming at higher frame rates) is quite apparent now I have upgraded.
I would have upgraded far sooner had Intel not chosen to keep changing the sockets, swapping out just a CPU is far simpler than rebuilding the entire system.
Tedaz - Monday, May 13, 2019 - link
Expecting i9-9900K joins the article.Badelhas - Monday, May 13, 2019 - link
I an still with a 2500K overclocked to 4.8Ghz, 8Gb of DDR3 1600Mhz RAM and, a 850 Evo SSD and a Nvidia 1070. I honestly see no reason to upgrade.IAN: All your testing basically demonstrated that there is no real reason that justifies spending 400 bucks for a new CPU, 200 bucks for a new Motherboard and 100 bucks for new DDR4 Ram - This totals 700 dollars. But your conclusion is that we should upgrade?! I dont get it.
tmanini - Monday, May 13, 2019 - link
Go ahead and re-read his "Bottom Line" concluding articles: gives a few specific recommendations where is may and may not be to your advantage. And if you aren't desiring/needing all of the other new bells/whistles that go along with newer boards and architecture, then you are set (he says).Seems pretty clear.